FINAL REPORT - environmentclearance.nic.inenvironmentclearance.nic.in/writereaddata/EIA/16042018Y0Q3HGQY... · FINAL REPORT . EIA study for ... Girish Shukla March 2015 –Till Date

Environmental Impact Assessment &

Environmental Management Plan

For

IA Studies for the Development of CBM Activities

in Raniganj Block, West Bengal

Prepared For Prepared By

ONGC Limited

Arcadis India Private Limited

October 2017

FINAL REPORT

EIA study for development of CBM Activities in Raniganj CBM Block

Arcadis/10002910/October’17 a ONGC

INFORMATION ABOUT EIA CONSULTANTS

Brief Company Profile

This Environmental Impact Assessment (EIA) report has been prepared by Arcadis

India

Arcadis India, has been operating in the county for several years and holds expertise in

conducting Environmental Impact Assessments, Social Impact Assessments, Environment

Health and Safety Compliance Audits, Designing and Planning of Solid Waste Management

Facilities and Carbon Advisory Services.

Addresses of Arcadis offices across India are as below:

Noida (Head Office):

3rd Floor, Tower B, Logix Techno Park,

Plot No. 5, Sector – 127, Noida

Uttar Pradesh -201301

Tel: +91-020-4368400

Fax: +91-020-4368401

Mumbai:

#1001, 10th Floor, Vishwaroop Infotech Park,

Plot No. 34, 35, 38, Sector 30 A, Vashi, Navi Mumbai – 400 705.

Phone: 022- 4125 6060

Email: [email protected]

Kolkata :

Matrix Tower, DN 24, Room

No:102, 1st Floor, Saltlake,

Sector 5 , Kolkata 700091

Tel +91 (033) 2367 8070

Fax +91 (033) 2367 8071, 033-23678070

Hyderabad:

Arcadis Consulting India Private Limited Gumidelli Towers, 2A, 2nd Floor,

Begumpet Airport Road, Begumpet, 500 016 Hyderabad

Phone: 080-4123 9141 / 080-4039 0777 Email: [email protected]

mailto:[email protected]



Arcadis/10002910/October’17 b ONGC

Bangalore:

#135, RMZ Titanium,

4th Floor, Old Airport Road, Kodihalli, Bangalore - 560 017

Phone:

080-4123 9141 / 080-4039 0777 +91 80 3059 1400/ +91 80 3059 1409

Email: [email protected]

[email protected]

QCI/NABET Accreditation Status

As on date, Arcadis India Pvt. Ltd. has been granted accreditation by the Quality Council of

India / National Accreditation Board for Education & Training (QCI / NABET) in 13 sectors

vide Certificate No. NABET/EIA/1417/SA028 valid up to July 10, 2017 which has been

further extended upto February 7, 2018 vide letter no. QCI/NABET/EIA/ACO/17/0373 dated

August 8, 2017. The certificate of accreditation is enclosed in the following page.





Arcadis/10002910/October’17 c ONGC


Arcadis/10002910/October’17 d ONGC


Arcadis/10002910/October’17 e ONGC

Declaration by Experts contributing to “EIA Study for Development of CBM Activities in

Raniganj CBM block”.

I, hereby, certify that I was a part of the EIA team in following capacity that developed

this EIA.

EIA Coordinator:

Name: MANGESH DAKHORE

Name: SUNIL GUPTA

Signature: Period of involvement: June’13 – Dec 2015

Signature: Period of involvement: Jan 2016 – Till date

Contact information:

ARCADIS INDIA PRIVATE LIMITED IIIrd FLOOR, TOWER B, LOGIX TECHNO PARK

PLOT NO. 5 SECTOR 127, NOIDA, UP

Functional Area Experts: Functional Area Experts (FAEs) involved in carrying out EIA study

for development of CBM Activities in Raniganj CBM are enlisted below.

S. N

Functional Areas

Name of Expert/s

Involvement (Period &

Task**)

Signature& Date

1

RH*, SHW*, AP*and WP *

Mangesh Dakhore March 2015 – Dec 2015

2 RH*, WP * Sunil Gupta Jan 2016- Till Date

3

AP*, NV and SHW Dibyendu Banerjee Jan 2016-Till Date

4 EB* Prakash Dash March 2015 – Till Date

5 SE* Rajani Iyer March 2015 – Till Date

6

AQ* and LU *

Girish Shukla

March 2015 – Till Date

7 WP*and RH* Menka Thakur March 2015 – Till Date *See overleaf for the details


Arcadis/10002910/October’17 f ONGC

Declaration by the Head of Accredited Consultant Organization

I, MAINAK HAZRA, hereby, confirm that the above- mentio ned experts prepared the

EIA study for development of CBM Activities in Raniganj CBM. I also confirm that I shall be fully accountable for any mis-leading information mentioned in this statement. Signature:

Name: MAINAK HAZRA

Designation: Head of Environment

Name of the EIA Consultant Organization: ARCADIS INDIA PRIVATE LIMITED

NABET Certificate No. & Issue Date: NABET/EIA/1417/SA028 June 8, 2017

The EIA report preparation have been undertaken in compliance with the approved ToR issued

by MoEF vide letter no. ToR vide letter F. No. J-11011/374/2013- IA II(I) dated 5th March,

2014 and its subsequent extension letter by MoEF vide letter F. No. J-11011/374/2013- IA II(I)

dated 20th July, 2017. Information and content provided in the report is factually correct for the

purpose and objective for such study undertaken.

S. N Functional Area

Code Complete name of the Functional Areas

1

AP

Air Pollution Prevention, Monitoring & Control

2

WP

Water Pollution Prevention, Control & Prediction of Impacts

3

SHW

Solid Waste and Hazardous Waste Management

4

SE

Socio-Economics

5

EB

Ecology and Biodiversity

6

AQ

Meteorology, Air Quality Modelling & Prediction

7

NV

Noise/ Vibration

8

LU

Land Use

9

RH

Risk Assessment & Hazard Management


Arcadis/10002910/October’17 g ONGC

Table of Contents

EXECUTIVE SUMMARY ...................................................................................................... i

1 INTRODUCTION........................................................................................................ 1

1.1 Brief Outline of Project and Project Proponent ............................................................. 1

1.2 Location and Area of Exploratory Block ....................................................................... 2

1.3 Requirement of EIA ....................................................................................................... 4

1.4 Objective of EIA study .................................................................................................. 4

1.5 Scope of EIA study ........................................................................................................ 4

1.6 Structure of the EIA report........................................................................................... 10

2 REGULATORY AND LEGAL FRAMEWORK ................................................... 10

2.1 National Environmental Policies ................................................................................. 10

2.2 National Legal Provisions for oil and Gas Projects ..................................................... 11

2.3 Environmental Clearance and Permitting .................................................................... 14

2.3.1 Submission and Approval of EIA as per Production Sharing Contract ..................... 14

2.3.2 Administrative Permissions as per the Petroleum Exploration License (PEL) ......... 14

2.3.3 Environmental Clearance as per EIA Notification .................................................... 14

2.3.4 Consent to Establish and Operate – No Objection Certificate (NOC) ...................... 15

2.3.5 Water Uptake ............................................................................................................ 15

2.3.6 License for Storage of Petroleum Products & Explosives......................................... 15

2.4 Siting of Project and Physical Occupation................................................................... 16

2.4.1 Project Siting ............................................................................................................. 16

2.4.2 Prevention of Damage to Adjacent Properties and the Environment ........................ 16

2.5 Design Process & Equipment/Material Selection ........................................................ 17

2.5.1 Noise Standards and Controls for Equipment ........................................................... 17

2.5.2 Flaring Specifications ................................................................................................ 17

2.5.3 Design of Water Pollution Control System ............................................................... 18

2.5.4 Drilling Wastes & Chemicals .................................................................................... 18

2.5.5 Hazardous Wastes Management ................................................................................ 19

2.5.6 Contractor Requirements ........................................................................................... 20

2.6 Project on Environmental Considerations ................................................................... 20

2.6.1 Wild Life Protection under Wildlife Act ................................................................... 20

2.6.2 Ancient Monuments and Archaeological Sites and Remains Act, 1958 ................... 21

2.6.3 Operation of Motor Vehicles ..................................................................................... 21

3 PROJECT DESCRIPTION ...................................................................................... 22

3.1 Overview ...................................................................................................................... 22

3.1.1 Raniganj Coalfield – Mining History and Coal Reserves.......................................... 31

3.2 Accessibility to the block ............................................................................................. 31

3.3 Block setting and physical features.............................................................................. 34

3.4 DEVELOPMENT AND PRODUCTION PROGRAM (PHASE III) ......................... 37


Arcadis/10002910/October’17 h ONGC

3.4.1 Production Well, GCS and Pipeline - Land Acquisition ........................................... 37

3.4.2 Production Well Site Preparation and Well Pad Construction .................................. 38

3.4.3 Pipeline Laying & Construction ................................................................................ 40

3.4.4 Surface Facilities (Production and transportation of CBM Gas) ............................... 42

3.4.5 Drilling methodology................................................................................................. 44

3.4.6 Development Well Testing Program ......................................................................... 49

3.4.7 Provisions for Handling Coal Fines and Sands: ........................................................ 51

3.4.8 CBM Produced Water................................................................................................ 51

3.4.9 Site Closure and Decommissioning ........................................................................... 58

3.5 UTILITIES AND RESOURCE REQUIREMENTS ................................................... 63

3.5.1 Manpower Requirement and Accommodation .......................................................... 63

3.5.2 Water Requirement .................................................................................................... 63

3.5.3 Fuel (MT) and energy (MW) consumption ............................................................... 64

3.5.4 Resource and Chemical Usage .................................................................................. 65

3.5.5 Cement type, additives and quantity.......................................................................... 65

3.6 POLLUTION SOURCES AND CHARACTERIZATION ......................................... 59

3.6.1 Noise Generation ....................................................................................................... 59

3.6.2 Air Emissions............................................................................................................. 59

3.6.3 Produced Water.......................................................................................................... 60

3.6.4 Hydrotest Water ......................................................................................................... 60

3.6.5 Domestic Waste ......................................................................................................... 60

3.6.6 Solid and Hazardous Waste Streams ......................................................................... 60

3.6.7 Drill Cuttings ............................................................................................................. 61

3.6.8 Drilling & Other Hazards .......................................................................................... 61

3.7 INSTRUMENTATION CONTROL SYSTEM ........................................................... 62

3.8 PROJECT SCHEDULE AND COST........................................................................... 44

3.9 HSE POLICY ............................................................................................................... 62

3.10 PROJECT BENEFITS ................................................................................................. 65

3.10.1 Improvement in Physical Infrastructure .................................................................... 65

3.10.2 Employment Potential ............................................................................................... 66

4 DESCRIPTION OF THE PRESENT ENVIRONMENT ...................................... 67

4.1 AIR QUALITY ............................................................................................................ 68

4.1.1 Climate and Meteorology .......................................................................................... 68

4.1.2 Primary Meteorological Monitoring and Interpretation ............................................ 69

4.1.3 Ambient Air Quality .................................................................................................. 70

4.1.4 Ambient Air Quality within Exploratory Block ........ Error! Bookmark not defined.

4.2 NOISE .......................................................................................................................... 79

4.3 LAND USE .................................................................................................................. 81


Arcadis/10002910/October’17 i ONGC

4.3.1 Area Details of 10 km from Block Boundary ............................................................ 81

4.3.2 Land Use Pattern within Block Area ......................................................................... 81

4.3.3 Topography and Drainage ......................................................................................... 84

4.3.4 Physiography and Geology ........................................................................................ 86

4.3.5 Proximity of Sea/Water Bodies ................................................................................. 88

4.3.6 Soil Condition ............................................................................................................ 90

4.3.7 Disasters/Man Made Hazards .................................................................................... 94

4.3.8 Seismicity of the Area ............................................................................................... 94

4.3.9 Flood Risk.................................................................................................................. 95

4.4 WATER AVAILABILITY .......................................................................................... 99

4.4.1 Damodar River Water Quality ................................................................................. 102

4.4.2 Primary Surface Water Quality Monitoring: ........................................................... 104

4.4.3 Groundwater availability: ........................................................................................ 112

4.4.4 Hydrogeology .......................................................................................................... 112

4.4.5 Groundwater Quality Monitoring ............................................................................ 113

4.5 TRAFFIC VOLUMES ............................................................................................... 118

4.6 BIOLOGICAL ENVIRONMENT ............................................................................. 121

4.6.1 Methodology ............................................................................................................ 121

4.6.2 Terrestrial Ecosystem .............................................................................................. 124

4.7 SOCIO-ECONOMIC ENVIRONMENT................................................................... 134

4.7.1 Methodology ............................................................................................................ 139

4.7.2 General Socio-economic Profile of the Study Area ................................................ 140

4.7.3 Education and Literacy ............................................................................................ 143

4.7.4 Economic Activities and Livelihood Pattern ........................................................... 144

4.7.5 Socio economic Infrastructure ................................................................................. 146

4.7.6 Cultural and Historical Sites .................................................................................... 149

5 ENVIRONMENTAL IMPACTS............................................................................ 150

5.1 IMPACT ASSESSMENT METHODOLOGY .......................................................... 150

5.1.1 Impact Criteria and Ranking.................................................................................... 150

5.1.2 Impact Significance ................................................................................................. 152

5.2 IMPACT ASSESSMENT .......................................................................................... 153

5.2.1 Visual Impacts and Aesthetics ................................................................................. 153

5.2.2 Impacts on Air Quality ............................................................................................ 154

5.2.3 Impact on Noise Quality .......................................................................................... 167

5.2.4 Potential Impact on Land use .................................................................................. 171

5.2.5 Impact on Soil Quality ............................................................................................. 172

5.2.6 Impact on Local Drainage & Physiography ............................................................ 174

5.2.7 Impact on Ground Water Resource and Quality...................................................... 176


Arcadis/10002910/October’17 j ONGC

5.2.8 Impact on Biological Environment.......................................................................... 178

5.2.9 Potential Impact on Socio -Economic Environment ............................................... 180

5.2.10 Impact on Historical and Cultural Environment...................................................... 182

6 QUANTITATIVE RISK ASSESSMENT .............................................................. 190

6.1 Objective of the QRA Study ...................................................................................... 190

6.2 RISK ASSESSMENT METHODOLOGY ................................................................ 191

6.2.1 Hazard Identification ............................................................................................... 192

6.2.2 Frequency Analysis ................................................................................................. 192

6.2.3 Consequence Analysis ............................................................................................. 193

6.2.4 Risk Evaluation........................................................................................................ 194

6.3 RISK ASSESSMENT OF IDENTIFIED PROJECT HAZARDS ............................. 195

6.3.1 Pipeline Failure Incidents & Causes ........................................................................ 195

6.3.2 Pipeline Failure – Potential Hazards........................................................................ 197

6.3.3 Ignition of a Leak (Immediate or Delayed) to give a Jet Fire.................................. 197

6.3.4 Immediate Ignition of a Rupture to give a Fireball & Crater Fire ........................... 197

6.3.5 Pipeline Failure – Frequency Analysis .................................................................... 198

6.4 DISASTER MANAGEMENT PLAN ....................................................................... 211

6.4.1 Objective .................................................................................................................. 211

6.4.2 Purpose .................................................................................................................... 211

6.4.3 Level 1 - Emergency................................................................................................ 212

6.4.4 Level 2 - Emergency................................................................................................ 212

6.4.5 Level 3 - Emergency................................................................................................ 213

6.4.6 ONGC Disaster Management Plan .......................................................................... 214

7 ENVIRONMENTAL MANAGEMENT PLAN AND MONITORING

FRAMEWORK ........................................................................................................ 223

7.1 ENVIRONMENT MANAGEMENT PLANS........................................................... 223

7.1.1 Pollution Prevention and Abatement Plan (PPAP).................................................. 225

7.1.2 Waste Management Plan ......................................................................................... 229

7.1.3 Produced Water Management Plan ......................................................................... 230

7.1.4 Road Safety & Traffic Management Plan ............................................................... 234

7.1.5 Occupational Health & Safety Management Plan ................................................... 235

7.1.6 Management of Social Issues and Concerns ........................................................... 236

7.1.7 Site Closure Plan...................................................................................................... 237

7.1.8 Wildlife Management Plan ...................................................................................... 239

7.1.9 Cultural Heritage Management................................................................................ 240

7.1.10 Social Action Plan ................................................................................................... 240

7.2 ENVIRONMENTAL MONITORING PROGRAM ................................................. 241

7.3 EMP BUDGET .......................................................................................................... 242


Arcadis/10002910/October’17 k ONGC

8 PUBLIC CONSULTATION ................................................................................... 250

9 DISCLOSURE OF CONSULTANTS .................................................................... 251

List of Tables

Table 1-1: Compliance of TOR Points .................................................................................... 6

Table 2-1: Regulatory Requirements Associated with Oil and Gas Drilling at CB-ONN-2010/11 ...................................................................................................................... 12

Table 2-2: Regularity Requirements Associated with Hazardous Waste Rules 2008 ........... 19

Table 3-1: Raniganj CBM block – Exploration, Pilot Assessment and Development Work Program...................................................................................................................... 23

Table 3-2: Kabitirtha Coal Block Overlap, Sector-A ............................................................ 26

Table 3-3: Relinquishment Area in Northeastern Part of Sector-A ..................................... 26

Table 3-4: Andal-Babuisol Coal Block Overlap, Sector – B ................................................ 26

Table 3-5: Coordinates for Sector B...................................................................................... 27

Table 3-6: Coordinates for Sector A ..................................................................................... 28

Table 3-7: Geological Resource Inventory – Raniganj Coalfield1 ....................................... 31

Table 3-8: Details of Land Procured for Exploratory Well and Pilot Wells ......................... 37

Table 3-9: List of Chemicals and Quantities to be Used During Drilling ............................. 45

Table 3-10: Comparative Analysis-Common CBM Produced Water Treatment Methods .. 56

Table 3-11: List of Chemicals and Quantities to be Used During Drilling ........................... 65

Table 4-1: Annual Average Burdawan District Rainfall (2009-2013) .................................. 68

Table 4-2: Climatological Data: IMD Station -Bankura (1999-2012) .................................. 68

Table 4-3: Ambient Air Quality Monitoring by WBPCB during 2011-12 ........................... 70

Table 4-4: Ambient Air Sampling Locations in Both Sectors of Block................................ 74

Table 4-5: Ambient Air Quality Monitoring Results for HC, NMHC And VOC................. 77

Table 4-6: Ambient Air Sampling Locations in Both Sectors of Block ..... Error! Bookmark

not defined.

Table 4-7 Noise Monitoring Location Details....................................................................... 79

Table 4-8: Land Use Distribution of Sector A of the Block.................................................. 82

Table 4-9: Land Use Distribution Of Sector B Of The Block............................................... 82

Table 4-10: Proximity of Water Bodies to the Block ............................................................ 88

Table 4-11: Soil Sampling Locations .................................................................................... 91

Table 4-12: Nutrient Analysis of the Soil Samples Analyzed............................................... 92

Table 4-13: Block Wise Details of Disaster in Burdwan District ......................................... 94

Table 4-14: Details of Gauge Station Over Damodar River during Rainy Season ............... 95

Table 4-15: Details of Gauge Station Over Ajoy River During Rainy Season ..................... 96

Table 4-16: List Of Schemes Being Undertaken For Flood Control And Drainage ............. 99


Arcadis/10002910/October’17 l ONGC

Table 4-17: Sampling Location Details............................................................................... 102

Table 4-18: Monitoring Location Details of Surface Water Sampling Stations of WBPCB

................................................................................................................................. 103

Table 4-19: Surface Water Sample Location Details .......................................................... 108

Table 4-20: Location of Ground Water Monitoring Stations .............................................. 115

Table 4-21: Forest In Burdwan and Bankura District ......................................................... 121

Table 4-22: Locations of Ecological Sampling ................................................................... 128

Table 4-23: Phyto- Sociological Analysis of Tree Species in Tilabani Protected Forest .... 129

Table 4-24: Phyto- Sociological Analysis of Tree Species of Gangajalghati Protected Forest ................................................................................................................................. 130

Table 4-25: List of Common Avifauna Recorded in the Block Area .................................. 132

Table 4-26: List of Fishes in the Water Bodies of the Block Area....... Error! Bookmark not

defined.

Table 4-27: List of Villages Falling in Sector A.................................................................. 135

Table 4-28: List of Villages Falling in Sector B of the Block ............................................. 136

Table 4-29: List of Study Area Villages .............................................................................. 139

Table 4-30: Demographical Profile of the Study Villages................................................... 140

Table 4-31: Workforce Participation for Study Area Villages ............................................ 144

Table 4-32: Medical Facilities in the Blocks Surveyed18 ................................................... 146

Table 4-33: Educational Facilities in Burdwan19 And Bankura20 District ........................ 147

Table 5-1: Environmental Assessment Methodology .......................................................... 151

Table 5-2: Criteria Based Significance of Impacts .............................................................. 152

Table 5-3: ISC-ST3 Model Run Input Data Set................................................................... 156

Table 5-4: Worst case Predictive GLC’s at AAQMS for PM, NO2 and SO2 -Scenario 1 in Block A .................................................................................................................... 157

Table 5-5: Worst case Predictive GLC’s at AAQMS for PM, NO2 and SO2 - Scenario 1 in Block B .................................................................................................................... 157

Table 5-6: Over All worst case Predictive GLC’s For PM, NO2 and SO2 and Distance from Source (Scenario 1) In Block –A & B ...................................................................... 158

Table 5-7: Worst case Predictive GLC’S At AAQMS For NO2 – Flaring In Block A ..... 163

Table 5-8: Worst case predictive GLC’S at AAQMS for NO2 – flaring in block b ........... 163

Table 5-9: Environmental Impact Identification Matrix (Without Mitigation Measures)... 184

Table 5-10: Environmental Impact Identification Matrix (With Mitigation Measures) ...... 187

Table 6-1: Frequency Categories and Criteria ..................................................................... 193

Table 6-2: Severity Categories and Criteria ........................................................................ 193

Table 6-3: Risk Matrix ........................................................................................................ 194

Table 6-4: Risk Criteria And Action Requirements ............................................................ 195

Table 6-5: Primary Gas Pipeline Failure Frequency ........................................................... 198


Arcadis/10002910/October’17 m ONGC

Table 6-6: CBM Transportation Pipeline Failure Frequency & Class ................................ 201

Table 6-7: Ignition Probability – Cbm Transportation Pipeline Failure ............................. 203

Table 6-8: Leak Frequencies From Process Equipment ...................................................... 204

Table 6-9: Scenaios for QRA Studies ................................................................................. 204

Table 6-10: Leak Frequencies from Pipeline and GCS ....................................................... 204

Table 6-11: Threshold Values For Each Effect Level ......................................................... 205

Table 6-12: Threat Zone Distance For Hypothetical Risk Scenarios .................................. 208

Table 6-13: Individual Risk – Pipeline Rupture .................................................................. 210

Table 6-14: ONGC On - Site Disaster Management Team Profile ..................................... 215

Table 7-1: Mitigation Measures For Environmental and Social Impacts............................ 225

Table 7-2: Mitigation Measure for Waste Stream ............................................................... 229

Table 7-3: Produced Water Quality Parameter And Discharge Standard ........................... 231

Table 7-4: Social Action Plan .............................................................................................. 241

Table 7-5: Tentative Budget for EMP Implementation ....................................................... 242

Table 7-6: Environmental Monitoring Program .................................................................. 244

List of Figures

Figure 1-1: Site Location of Raniganj CBM block ................................................................. 3

Figure 3-1: ONGC Block Area Showing Both Sectors A and B .......................................... 24

Figure 3-2: Location of Development Wells in Sector B of the Block ................................. 30

Figure 3-3: Block Accessibility Map for CBM Raniganj Block ........................................... 33

Figure 3-4: Satellite Imagery for 10km Area around the Block............................................ 36

Figure 3-5: Typical Layout of Development Well Drill Site ................................................ 39

Figure 3-6: Schematic Layout of Typical GCS-CBM Gas ................................................... 43

Figure 3-7: Schematic Layout of Typical GCS- CBM Effluent............................................ 44

Figure 3-8: Schematic Diagram of CBM Production Well ................................................... 46

Figure 3-9: Typical Schematic Diagram of CBM Well Site Facility .................................... 48

Figure 3-10: Generalized CBM Production Profile............................................................... 49

Figure 3-11: Generalized CBM Production Well4 ................................................................ 50

Figure 3-12: Water Balance Diagram.................................................................................... 64

Figure 3-13: ONGC HSE Policy ........................................... Error! Bookmark not defined.

Figure 4-1: Annual Wind Rose for Surface Wind Data (1971-1996) of Bankura ................ 69

Figure 4-2: Wind Rose Diagram for Pre Monsoon Season ................................................... 70

Figure 4-3: Ambient Air Quality Monitoring Locations in Both Sectors (A+B).................. 73

Figure 4-4: Graphical Representation of PM10 and PM2.5 in the Ambient Air Samples .... 75

Figure 4-5: Graphical Representation of SO2 and NOx ........................................................ 75


Arcadis/10002910/October’17 n ONGC

Figure 4-6: Graphical Representation of PM10, PM2.5, SO2 and NOX (Nov – Dec 2012) ................................................................................... Error! Bookmark not defined.

Figure 4-7: Graphical Representation of CO (Nov – Dec 2012)......... Error! Bookmark not

defined.

Figure 4-8: Noise Monitoring Location Map of Sector A and B .......................................... 80

Figure 4-9: Land Use Pattern of the Block (Sector A and B) ................................................ 83

Figure 4-10: Digital Elevation Map Showing Topography and Drainage of the Block ........ 85

Figure 4-12: Geological Map of Raniganj Coal Basin .......................................................... 87

Figure 4-13: Regional Stratigraphic Sequence Of Raniganj Basin ....................................... 88

Figure 4-14: Soil Quality Monitoring Locations in the Block (Sector A and B)................... 93

Figure 4-15: Seismic Zone Map of West Bengal................................................................... 95

Figure 4-16: Floods Inundated Areas in Parts of West Bengal During Floods of Sept 2009 97

Figure 4-17: Flood Inundated Area in West Bengal During Aug 2011 Floods ..................... 98

Figure 4-18: Flood Inundated Area in West Bengal During July 2013 Floods ..................... 98

Figure 4-19: Damodar River Basin...................................................................................... 101

Figure 4-20: Physio-Chemical Properties of Damodar River Water Quality...................... 103

Figure 4-21: Bacteriological Examination Analysis of Surface Water Samples Conducted By WBPCB.............................................................................................................. 104

Figure 4-22: Dissolved Oxygen, Bod and Cod In Analyzed in Five Surface Water Samples

................................................................................................................................. 109

Figure 4-23: Physio-Chemical Characteristics of the Surface Water Samples Monitored 110

Figure 4-24: Surface Water Monitoring G Location in the Block (Sector B) ..................... 111

Figure 4-25: Ground Water Monitoring Locations ............................................................. 116

Figure 4-26: Physio Chemical Properties of the Groundwater Samples Analyzed. ............ 117

Figure 4-27: Calcium and Magnesium Level in the Ground Water Samples Monitored ... 118

118

Figure 4-28: Traffic Monitoring Locations in the Block (Sector A And B) ........................ 120

Figure 4-297: Biogeographic Provinces of India .................. Error! Bookmark not defined.

Figure 4-30: Ecological Sensitivity Map Showing Location of Development Wells, GCS And Pilot Wells........................................................................................................ 125

Figure 4-31: Percent Population of SC and ST in Study Villages ...................................... 141

Figure 4-32: Sex Ratio in the Study Area ........................................................................... 142

Figure 4-33: Male And Female Population (%) in Study Villages ...................................... 142

Figure 4-34: Male and Female Literacy Rate in the Study Area ......................................... 143

Figure 4-35: Employment Details of the Study Area .......................................................... 145

Figure 4-36: Percentage Composition of Various Workers in the Study Area ................... 145

Figure 5-1: Isopleths for PM Emission From DG Sets ........................................................ 159

Figure 5-2: Isopleth for NO2 Emission from DG Set .......................................................... 160


Arcadis/10002910/October’17 o ONGC

Figure 5-3: Isopleth from SO2 Emission from DG Set ....................................................... 161

Figure 5-4: Predicted NOX Concentration Plot (µg/M3) – Flaring (Sector A)................... 164

Figure 5-5: Predicted NOx Concentration Plot (µg/m3) – Flaring (SECTOR B) ............... 165

Figure 5-6: Noise Attenuation Plot for Drilling Phase ........................................................ 170

Figure 6-1: Risk Assessment Methodology ........................................................................ 191

Figure 6-2: CBM Gas Pipeline Failure Incidents (1970-2010) ........................................... 196

Figure 6-3: Evolution Of Primary Failure Frequencies ....................................................... 199

Figure 6-4: CBM Gas Pipeline Failure – Distribution Of Incident & Causes ..................... 199

Figure 6-5: CBM Gas Pipeline Primary Failure Frequencies Per Cause ............................. 200

Figure 6-6: External Failure Frequency – Relation With Damage Type & Diameter Class ................................................................................................................................. 201

Figure 6-7: Threat Zone Plot For Jet Fire - 1'' Dia Leak...................................................... 206

Figure 6-8: Threat Zone Plot For Jet Fire - 4” Pipeline Rupture ......................................... 207

Figure 6-9: Threat Zone Plot For Jet Fire - 18” Pipeline Rupture ....................................... 208

Figure 6-10: VCE Modeling Results for Overpressure ....................................................... 209

Figure 6-11: Tolerance Criteria for Individual Risks .......................................................... 210

Figure 6-12: Emergency Classification Of “decision Tree”.................................................. 212

FIGURE 6-13 Emergency Response Levels ....................................................................... 213

Figure 7-1: Schematic Diagram – Produced Water Treatment Using Reverse Osmosis (Ro) ................................................................................................................................. 233

List of Photos

Photo 4-1: Ambient Air Quality Monitoring ......................................................................... 74

Photo 4-2: Block village small to medium sized ponds ........................................................ 89

Photo 4-3: Damodar river flowing in south western direction across Sector B of the block (April’15) ................................................................................................................... 89

Photo 4-4: Ajay river (dried) flowing NE of Sector A of the block (April’15)..................... 89

Photo 4-5: Red and Yellow Ultisols soils of the region ........................................................ 90

Photo 4-6: Soil sampling ....................................................................................................... 92

Photo 4-7: Surface water sampling of Damodar river ......................................................... 108

Photo 4-8: Ground water monitoring in the block............................................................... 115

Photo 4-9: Ground water monitoring in the block............................................................... 115

Photo 4-10: Photographs showing the land use pattern of the block.... Error! Bookmark not

defined.

Photo 4-11: Gangajalghati Protected Forest ........................................................................ 129

Photo 4-12: Arti village, public consultation (Burdwan district) ........................................ 138


Arcadis/10002910/October’17 p ONGC

Photo 4-13: Ichhapur village, public consultation (Burdwan district) ................................ 138

Photo 4-14: Mejia village, public consultation (Bankura district) ...................................... 138

Photo 4-15: Gopalmath village, public consultation (Burdwan district) ............................. 138

Photo 4-16: Domahani village, public consultation (Burdwan district) .............................. 138

Photo 4-17: Sidhpur village, public consultation (Burdwan district) .................................. 138

Photo 4-18: Bansia village, public consultation (Burdwan district) .................................... 138

Photo 4-19: Ardhagram village, public consultation (Bankura district) ............................. 138

Photo 4-20: Higher Secondary School in Domahani village............................................... 148

Photo 4-21: Primary school in Jamuria village ................................................................... 148

Photo 4-22: Market area in Mejhia village .......................................................................... 148

Photo 4-23: Market area in Jamuria village ........................................................................ 148

Photo 4-24: Electricity connection i the study area ............................................................. 148

Photo 4-25: Coal used as cooking fuel in most of the villages ........................................... 148

Photo 4-26: Village houses in the study area villages ......................................................... 148

Photo 4-27: Common Drinking facility in the study area villages ...................................... 148


Arcadis/10002910/October’17 i ONGC

EXECUTIVE SUMMARY

INTRODUCTION

Raniganj CBM Block, spread over an area of 350 sq.km. includes 240 sq. km. area in the

northern part (termed as Sector-A) and the jointly identified 110 sq. km. area in the south/south

central part (termed as Sector-B) of Raniganj Coalfield was awarded to the ONGC-CIL

Consortium (ONGC- 74%, CIL-26%) on nomination basis by Government of India in January

2002 with ONGC as the operator.

PROJECT LOCATION & ACCESSIBILITY

The proposed Raniganj CBM block, is majorly located in Burdwan district, with smaller portion

in Bankura district. The total area of the block is spread across 350sq.km. The block can be

approached by the Kolkata-Delhi National Highway (NH2) as well as the Kolkata-Delhi.

Raniganj and Andal are railway stations located within Sector B of the bock on the Bardhaman-

Asansol section.

PROJECT DESCRIPTION AND ACTIVITIES

The present development plan (Phase III program) envisages drilling of 80 vertical,

hydraulically fractured Development wells and installing four nos GCS within the Sector B.

All the planned wells are of vertical profile. The present Development Plan also covers all

the prospective parts of Sector-B of the Raniganj Block. The activities will include drilling of

development & production wells, installation of surface facilities and laying of inter-

connecting and transportation pipeline network for commercial production, collection,

transportation and sale of CBM gas. The activity would involves

Construction of access roads and drill/GCS sites

Development well drilling and testing

Production of CBM

Site closure and decommissioning

LAND PROCUREMENT

After finalization of drill site, ONGC will procure the land from the land owners approximately

2acres of land will be required for each production well facility which may vary depending on

the land availability at each location and on nature of drilling rig deployed excluding approach

road. The wells will be connected to the GCS by pipe lines. Approximately 20-25 acres of land

would be required for each GCS. Thus approximately 160 acre of land would be required for

80 development well and 100acre for GCS facilities in the Sector B of block. This land will be

either obtained on lease or permanently acquired. Presently

10.65 acres of land has been purchased in Sector B for one exploratory well and two pilot

wells. For remaining land required for the project purpose, identification is in the process.


Arcadis/10002910/October’17 ii ONGC

PROJECT UTILITIES AND RESOURCE REQUIREMENTS

Water: Approximately 800 m3 of water per well (approximately 1200m depth) will be used for

drilling of a well. The source of water is to be brought by tanker from nearby testing well/ or

bore well at site. Average 3-5 m3 of water will be consumed per day for operational purpose.

Power: DG Sets of 350 KVA capacity will be used for drilling purposes. During Work Over 33

KV Gen set would be used while during testing power requirement will be met out from 100

KVA DG set. It is estimated that per month 36 KL of diesel will be required during drilling

phase and 5 KL of diesel would be used during testing. Further average 7.2 KL of diesel would

be used per day during stimulation.

Manpower: During construction phase it is anticipated that approx.150 nos. contractual

workers both unskilled and semiskilled will be deployed for site preparation and laying of gas

pipelines. During development well drilling and coal seam perforation & hydro-fracturing it

is estimated that 45 nos. and 20 nos. workers will be deployed onsite respectively on 12 hour

shift basis with each drilling rig. Further approx. 175 nos. security personnel will be deployed

along with supported by 240 nos. office and logistic personnel.

WASTE GENERATION

It is anticipated that about 10-12 m3/day/well of CBM produced water will be generated during

dewatering operation. Domestic waste water (approx. 5.2 KLD) generated from onsite

sanitation facilities the same will be treated using a combination of septic tanks and soak

pits to be provided at each development well site. Drill cuttings of sand, shale, siltstone and

coal will be generated, the quantity will be about 50-55 m3 by volume per well.

BASELINE ENVIRONMENTAL STATUS

To understand the existing physical, biological and socioeconomic environmental situation,

both primary and secondary data was collected. Stakeholder consultations were also carried

out during site visits for secondary data collection. The study period for primary data collection

was during pre-monsoon season in 2017.

Climate and Meteorology: Meteorological data for the study area is collected from IMD station

at Bankura which is 45-60kms away from both sector’s A and B of the Raniganj block. Through

the primary meteorology monitoring, the predominant wind direction during study period is

observed to be from NW – SE direction and the maximum wind speed was observed to

be>=11m/s

Ambient Air Quality: The ambient air quality is monitored at 10 representative locations of the

block. The average 24 hourly PM10 in these locations is found s l igh t ly h igher t han the

NAAQS limits except one location. Particulate matter PM10 was found above the CPCB

permissible limit of 100µg/m3 in these locations monitored ex cep t one loca t ion viz.

Patswara village (max 96.2 μg/m3). The mean average value for SO2 monitored at all ten

locations ranged between 5.4-12.8 µg/m3. The concentration range monitored for NOx is

between 20.0-36.8 µg/m3. Concentration for methane hydrocarbons and volatile organic


Arcadis/10002910/October’17 iii ONGC

compounds (VOC) at all ten monitoring locations showed concentration Below Detectable

limit.

Ambient Noise Quality: Ambient noise monitoring is conducted at ten monitoring locations

within the block. Ambient noise quality results, revealed that all noise levels recorded at

respective locations were below the stipulated CPCB noise limits for day and night time both

for Residential and Commercial area category.

Physiography and Geology: Geologically, Burdwan district is composed of Gondwana rocks.

The soil is partly clay more or less altered and partly a red coloured coarse grain sand, large

surfaces composed of which are found in the beds of the Damodar and Ajay river. In Raniganj

and few other coal fields of the Damodar valley, good thickness of black and grey shales with

bands and nodules of clay ironstone. The Raniganj beds comprise a great thickness of coarse

and fine sandstone mostly false bedded and felspathic, with shales and coal seams, which are

frequently continuous over considerable area.

Groundwater Quality: Ground water samples are collected from dug well of five villages. Only

in village Patswara, Total Dissolved Solids (TDS) and Total Hardness was within the desirable

limits (412 mg/l), in village Hetadoba (585 mg/l) it was slightly more than the desirable limits

and in villages Andal (620mg/l), Laudoha(702 mg/l) and Benachity (627 mg/l) it was more

than the desirable limits as per the IS 10500: 2012 acceptable limit. Alkalinity was found

slightly high in three villages other than Hetadoba and Patswara i.e. above the IS 10500: 2012

acceptable limit of 200mg/l.

Samples from all the five villages showed chloride concentration quite within permissible

limits. Total Coliform results for all ground water samples analyzed showed Total coliform

<2.0MPN/100ml. Low bacteriological contamination is due to the fact that the groundwater

table is found very low as 150-200ft bgl, hence the source of bacteriological contamination is

negligible. Iron concentration was found high in three groundwater samples of Shakradanga

village (0.35mg/l), Icchapur village (1.33mg/l), and Amrai village (1.07mg/l) i.e. well above

the acceptable limit of 0.3mg/l as per BIS 10500-2012. Heavy metal concentration viz. Cyanide,

Hexavalent Chromium, Zinc, Cadmium, Lead, Mercury, Boron and Arsenic were found well

within the permissible limits of IS 10500- 2012 in all samples monitored. The remaining

samples were found well within the limits prescribed by BIS 10500-2012.

Surface Water Quality: Ajoy and Damodar river are the main sources of water in the block.

Damodar River is the existing river flowing through Sector B of the block area, from north

western direction to south eastern direction of the block. The stretch of the river in the block is

approx. 10kms and is only used for bathing and washing purpose by the villagers. Surface

water quality was analyzed from five locations i.e. u/s of Damodar, m/s Damodar, d/s

Damodar, river stretch leaving Sector B of block near Shrirampur village and village pond

near Jhatidanga village. Samples from Damodar river and village ponds conforms to Class C

i.e. Drinking water source after conventional treatment and disinfection.

Land use: The land-use and land-cover of the study area is interpreted from satellite data

(LANDSAT Imagery), topo sheet of the area and subsequently by ground truthing during


Arcadis/10002910/October’17 iv ONGC

reconnaissance surveys. The land use of Sector A shows that majority of the land (80.87%) in

the area is used for agriculture purpose. In Sector B, the maximum percentage of land use is

covered under agriculture (60.53%). Paddy and sugarcane are the main produce. Paddy is

grown for one season as per availability of water. The remaining part of the year, the locals

grow commonly grown vegetables like pumpkin, spinach, potatoes, brinjal etc.

Soil Quality: Soil samples from six locations were taken to analyse the soil condition of the

block. Soil samples are analysed for texture, porosity, bulk density, SAR, CEC, pH,

conductivity, nitrogen, phosphorous, potassium, water holding capacity, etc. The textural class

predominately as per the soil samples analysed for their silt, sand and clay ratio was found to

be Clay Loamy soil in the study area.

Traffic Survey: The traffic monitoring is carried out at major junctions near and around the

block. Traffic count survey is conducted in four locations viz. Durgapur to Kolkata Road,

National Highway (NH2), main road near Janardan Shayer village and the Jamuria to

Raniganj Connecting Road.

Natural Hazards: The proposed block forms a part of seismic zone III as per Seismic Zoning

Map of India and is located in an area of moderate seismic hazard. During the recent floods

in 2009, 2011 and 2013 the project site was not inundated.

Ecology: There is no Wildlife Sanctuary or National Park located within 10km radius of the

block. However, a small part of Ukhra Protected Forest under Durgapur Forest Division and

Gangajalghati Protected Forest under Bankura Forest Division are located in Sector B of the

block. The proposed CBM block lies within the biogeographic province-7B, Lower Gangetic

Plain. The vegetation of the forest areas falling in the block is categorized as Northern Tropical

Dry Deciduous Forest type (subgroup 5-B of Champion and Seth, 1968). Village woodlots have

mixed plantations of Mango, Pipal, Arjuna, Mahua, Subabul, Acacia and Neem whereas the

urban/peri-urban set up woodlots have mostly Acacia auriculiformis (Sunajhuri) and

Eucalyptus sps. Trees are noticed along the village road and along the National highway

(NH2) connecting to the site include higher frequency of Aam (Mangifera indica), Shisham

(Dalbergia sissoo), Neem (Azadirachta indica), Kala sirish (Albizzia lebback), Bakain (Melia

azaderachta), etc. are recorded. No rare and endangered species were found during the survey.

Bird species commonly found include Common Myna, Rock Pigeon, Magpie Robin,Cuckoo,

Drongo,Koel, Green Bee Eater, Pariah Kite, Red vented Bulbul, Spotted Dove, Pied Myna,

Indian roller, Cattle Egret, Pond Heron etc. Garden lizards and gecko were found within the

extensive growth of bushes. Snakes like cobra, common Krait, Russell’s viper are also reported

in the area. Galda chingdi (Giant River Prawn) is the most important fish specie of Damodar

River which has a good commercial significance. The other fish species which are largely

caught by the local fishermen are tengra, boal, aar and galda. Other than Wallago attu (boal)

which is considered as Near Threatened (and its trend is decreasing) by IUCN, there is no

rare, endangered fish species recorded from Damodar.

Socio economic: The study area villages comprise of twenty seven villages in both the districts

viz. Burdwan and Bankura. The study area villages falling under Burdwan and Bankura district


Arcadis/10002910/October’17 v ONGC

is spread across eight sub-district – Ondol, Raniganj, Jamuria, Faridpur-Durgapur, Kalna-II,

Ketugram II, Barabani and Mejhia. Asansol- Durgapur region and Raniganj –Kulti - Jamuria

area being an industrial base to a number of large and medium industries including thermal,

cement, steel plants etc. The sex ratio is 923 females per 1000 males in the study area. Villages

under Burdwan district have a sex ratio of 923 and villages under study falling under Bankura

district has a sex ratio of 926 per 1000 males.

ENVIRONMENTAL IMPACT ASSESSMENT

The potential impacts of the project on different components of the environment is

systematically identified and evaluated for significance. The main concerns that emerged are:

Impact on air Quality: The operation of DG sets during drilling on site will result in the

generation of air pollutants viz. PM, NOx,, CO and SOx , which may affect the ambient air

quality temporarily. In order to predict the incremental values of air pollutants and resultant

Ground Level Concentrations (GLCs) at various distances intervals from the source of the

above mentioned pollutants, an air modeling is carried out by using ISC3ST model. Predicted

incremental values for PM, NOx and SOx due to DG set operations are 0.12 µg/m3, 1.78 µg/m3

and 0.17µg/m3respectively at a distance of 1.58km in the downwind direction SE from the

location of DG sets at well site. The resultant Ground Level Concentrations (GLCs) for all

pollutants in worst-case scenario is well below the CPCB standards limits except AQ3, AQ9

and AQ10 where the particulate matter concentration is in the range of 130.6 -135.3 µg/m3.

As all the DG sets would not be operated at the same time, hence the generation of gaseous

pollutants in the ambient environment is not going to cause long term impact. Additionally,

maintenance of proper stack height of 30m would help in controlling the ground level

concentrations. Therefore, impact on air quality will be of low significance.

Impact on Noise Quality: Proposed drilling operations and related activities will lead to

considerable level of noise generation that may have significant impact on the surrounding

ecology and local communities in terms of increase in noise levels and associated disturbances.

Studies indicated that noise generated from operation of drilling rig generally varies in the

range of 88-100 dB (A) with high noise levels being recorded close to the rig. Further

considering drilling to be a continuous operation the noise generated from drilling equipment’s

has the potential to cause discomfort to the local communities residing in close proximity

(within 500m) of the rig facility. Occupational health and safety impacts viz. Noise Induced

Hearing Loss (NIHL) is also anticipated on personnel working close to such noise generating

equipment. However considering the short duration of the drilling period (approx. 60 days)

and necessary noise prevention and control measures viz. use of acoustic barriers, provisions

proper PPEs, regular preventive maintenance of equipment’s, maintaining safe distance from

habitation etc. to be implemented by the proponent Low impact to this regard is envisaged.

Impact on Soil Quality: The soil of the block is dominated by clay loamy soils. The only crop

grown in this type of soil is rice, which is well-suited to the region. Stripping of top soil will be

affecting the soil fertility of the well sites. Further, sourcing of borrow material from

agricultural fields, improper storage and handling of drill cuttings, waste, fuel and chemicals


Arcadis/10002910/October’17 vi ONGC

may contaminate the soil. Site preparation activities may also result in increased soil erosion

and degrade soil properties. Specific mitigation measures will be implemented by the

proponent to stabilize the top soil, to preserve their fertility characteristics during site

restoration. Further, adequate measures will be taken for storage and handling of waste, fuel

and chemicals to avoid any soil contamination. Further considering the impact of the stripping

of the top soil is localised in nature (within the work site). The impact is, therefore, considered

to be of low significance.

Impact on Topography and drainage: CBM block area primarily characterized by

agricultural land, potential impacts envisaged in the form of change in land use pattern

resulting from well site and GCS siting and construction. Temporary land use changes are also

likely to occur during pipeline laying for evacuation of CBM gas from well site to GCS for

processing and supply. The potential impacts on physiography and drainage can take place

due to strengthening of the access road, laying of pipeline (for evacuation of CBM gas from

wells to GCS) and development of well site and other surface facilities. However this impact

on local drainage system will not be localized, though will happen during some phases of the

project life cycle.

Impact on Water Quality and Hydrology: The surface run off from drilling waste (cuttings

and drilling mud) is likely to be polluting source leading to the pollution of receiving water

bodies viz. natural drainage channels, ponds etc. However, taking into account the provision

of onsite drainage system and sediment control measures to be implemented by the proponent

and discharge in compliance with the CPCB Inland Water Discharge Standards, the impact is

considered to be of medium significance.

Impact on Biological Environment: Impact on local ecology due to proposed drilling

activities is assessed in terms of loss of flora and fauna, impacts on avifauna, impact on aquatic

habitats and loss of ecological roductivity in agricultural fields. The impacts on local ecology

will be like clearing of ground vegetation, disturbance due to noise and light, wastewater

discharge, loss of fertility due to top soil tripping etc. Part of two Protected Forests viz. Ukhra

and Gangajalghati Protected Forest which are predominantly natural Sal forests fall in Sector

B of the block . None of the proposed gas prospect wells are identified within any of the forest

area. During the core hole and test well, the ground vegetation shall be removed as required.

The impact on flora and its habitat is minimal as the majority of the wells are proposed in

agricultural land/culturable waste land.

Impact on Socio economic Environment: The proposed well sites are mainly located on

agricultural land. The proposed project would not require any displacement of villagers.

Impact on socio economic environment is attributed to loss of livelihood, conflicts on job

opportunity, disruption of infrastructure, discomfort due to dust and noise, ecological

productivity of agricultural land, influx of population etc. The project will benefit the people

living in the neighboring villages by giving preference to them in relation to direct & indirect

employment associated with the various project activities and boosts the local economy. The

proposed project will also involve the improvement of existing road and/or bridge condition


Arcadis/10002910/October’17 vii ONGC

thereby enabling the transportation of drilling rig and ancillary equipment.

QUANTITATIVE RISK ASSESSMENT

The quantitative risk assessment has been done to provide a systematic analysis of the major

risks associated with CBM development program which involves drilling of 80 nos.

development wells, installation of 4 Gas Collecting Stations (GCS) and laying of inter-

connecting and transportation pipeline network (4”) for CBM transportation. Oil spills, loss

of well control/blow-out and process leaks constitute the major potential hazards of onshore

drilling. For the proposed project the individual risk has been considered only for pipeline

rupture as no predicted fatality has been established for the consequence modelling undertaken

for CBM gas release ignition from valves/flanges of the GCS facility. Pipeline failure could

lead to potential hazard due to ignition of leaks that might result into a jet fire or immediate

ignition of rupture that might lead to Fireball and Crater fire. The project pipeline failure

frequency (per year) estimated at 6.188 x 10-4 for gas pipeline rupture and 4.140 x 10-3 for

Gas Pipeline Leak.

ENVIRONMENTAL MONITORING PROGRAM

Continuous monitoring needs to be carried out for regulatory permit requirements related to

environmental effects and to assess performance of EMP implementation. Monitoring

indicators have been developed for each of the activity considering mitigation measures

proposed. Indicators have been developed for ascertaining performance of the EMP

implementation which focuses not only on quantifying or indexing activity-environment

interactions that may potentially impact the environment but also will help in comparing

different components of environmental quality against previously established baseline values.

Monitoring results will be documented, analyzed and reported internally to Drilling Supervisor

and HSE Coordinator. Monitoring requirements along with frequency of monitoring and

responsibility of carrying out the monitoring have been described in the EIA report.

ENVIRONMENTAL MANAGEMENT PLAN

Site-specific Environment Management Plans (EMP) has been developed to prevent and

mitigate significant adverse impacts and accentuate beneficial impacts will be implemented by

ONGC for the proposed project. The key mitigation measures specific for each management

plan have been discussed in the Table below:

Pollution Prevention and Abatement Plan:

The top soil generated from site clearance activities will be stored in designated area

and stabilized to prevent fugitive dust emissions.

Preventive maintenance of DG sets to be undertaken as per manufacturers schedule to

ensure compliance with CPCB specified generator exhaust.

All vehicles, equipment and machinery used for construction will be subjected to

preventive maintenance as per manufacturer norms.

Flaring will be undertaken in accordance with the CPCB Guidelines for Discharge of


Arcadis/10002910/October’17 viii ONGC

Gaseous Emissions for Oil & Gas Extraction Industry.

High combustion efficiency, smokeless flare/burner will be used.

Installation of acoustic enclosures and mufflers on engine exhaust of DG sets to ensure

compliance with generator noise limits specified by CPCB.

Setup effective noise barrier at the fence-line of the site.

Fuel and chemical storage areas will be paved and properly bunded.

Run-off discharges to natural drainage channels/water bodies to conform to CPCB

Inland Water Discharge Standards.

Proper casing and cementing of drilling well will be done to prevent contamination of

subsurface aquifers.

Water based mud to be used as a drilling fluid

Waste Management Plan:

Use of low toxicity chemicals for the preparation of drilling fluid.

Storage of drill cuttings in impervious HDPE lined pits

Disposal of wash water will be achieved after necessary treatment to comply with the

CPCB onshore effluent discharge standard for oil and gas industry.

Necessary spill prevention measures viz. spill kit will be made available at the

hazardous material storage area

The hazardous waste (waste and used oil) will be managed in accordance with

Hazardous Waste (Management, Handling & Transboundary Movement) Rules, 2008

The kitchen waste will be disposed in nearest municipal dumping site on a daily

basis through approved waste handling contractors

The sewage generated will be treated in a combination of septic tank and soak pit.

Used batteries will be recycled through the vendors supplying lead acid batteries as

required under the Batteries (Management & Handling) Rules, 2001.

Recyclables will be periodically sold to local waste recyclers.

Road Safety & Traffic Management Plan:

Project vehicular movement involved in sourcing and transportation of borrow material

will be restricted to defined access routes.

Precautions will be taken to avoid damage to the public access routes including highways

during vehicular movement.

Clear signs, flagmen & signal will be set up at major traffic junctions and near sensitive

receptors viz. primary schools in discussion with Gram Panchayat and local villagers.


Arcadis/10002910/October’17 ix ONGC

Movement of vehicles during night time will be restricted. Speed limits will be maintained

by vehicles involved in transportation of raw material and drilling rig.

A Journey Management Plan will be formulated and implemented by the contractor to

control construction and operational phase traffic.

Routine maintenance of project vehicles will be ensured to prevent any abnormal

emissions and high noise generation.

Adequate training on traffic and road safety operations will be imparted to the drivers of

project vehicles. Road safety awareness programs will be organized in coordination with

concerned authorities to sensitize target groups viz. school children, commuters on traffic

safety rules and signage.

Occupational Health & Safety Management Plan:

All machines to be used in the construction will conform to the relevant Indian Standards

(IS) codes, will be kept in good working order, will be regularly inspected and properly

maintained as per IS provisions and to the satisfaction of the site Engineer.

Contractor workers involved in the handling of construction materials viz. borrow

material, cement etc. will be provided with proper PPEs viz. safety boots, nose masks etc.

No employee will be exposed to a noise level greater than 85 dB(A) for a duration of

more than 8 hours per day. Provision of ear plugs, ear muffs etc. and rotation of workers

operating near high noise generating areas.

All chemicals and hazardous materials storage container will be properly labeled and

marked according to national and internationally recognized requirements and

standards. Materials Safety Data Sheets (MSDS) or equivalent data/information in an

easily understood language must be readily available to exposed workers and first-aid

personnel.

The workplace must be equipped with fire detectors, alarm systems and fire-fighting

equipments. Equipments shall be periodically inspected and maintained to keep good

working condition.

Adequate sanitation facilities will be provided onsite for the operational workforce both

during construction and operational phase of the project.

Training programs will be organized for the operational workforce regarding proper

usage of PPEs, handling and storage of fuels and chemicals etc.

Management of Social issues and concerns

People from adjoining areas especially given job preference through local contractors

according to the skill sets possessed.

Prior to the commencement of the proposed activity, a consultation program will be

conducted by ONGC with the target groups and local authorities. The primary objective


Arcadis/10002910/October’17 x ONGC

of such consultation will be to share with the concerned villagers/stakeholders the

objective of the proposed project associated impacts and their mitigation.

ONGC will give more emphasis and priority on periphery development, development of

health facilities and provision for drinking water facility as per Corporate Social

Responsibility (CSR) Plan.

During the drilling phase and for the rest of the project activities proper safety measures

will be undertaken both for transportation as well as the other operations.

The drill site would be fenced and gates would be constructed so that the children are

refrained from straying into the site.

Emergency Response Plan

Drilling rig and related equipments to be used for development drilling will be conformed

to international standards specified for such equipment.

Blow-out preventers and related well control equipment shall be installed, operated,

maintained and tested generally in accordance with internationally recognized

standards.

Appropriate gas & leak detection system will be available at each of the drilling location.

Adequate fire-fighting equipment shall be provided at each drilling site

PROJECT COST

The total Development cost has been estimated to be INR 957 Crore with supply of gas at

ONGC fence, the CAPEX component being INR 600 Crore and OPEX of INR 357 crore. The

development activities include drilling of wells and commissioning surface facilities staggered

over 4 years. Net cash flow after tax, Royalty and PLP is estimated to be INR 531Crore, at a

gas price of US $ 6.0/MMBTU, escalated @ 5% alternate year over a 20-year span.

Conclusion

Proposed Coal Bed Methane (CBM) development well drilling project will provide benefits to

the society, environment and economy of the surrounding area. The benefits would include

Improvement in Physical Infrastructure (improvement in road connectivity in the area, if

required) and amenities; Generation of employment: Most of workforce employed during the

drilling stage will be semi-skilled. People from adjoining areas will be given preference

according to the skill sets possessed and Improvement in Future Economy. The flow of economy

in the surrounding area will improve the existing amenities, infrastructure and socio-economic

environment of the surrounding areas.


Arcadis/10002910/October’17 1 ONGC

1 INTRODUCTION

1.1 Identification of Project and Project Proponent

Arcadis India Pvt. Ltd. (Formerly known as Senes Consultants Private Limited) has been

appointed by ONGC to undertake an Environmental Impact Assessment (EIA) study for its

proposed Coal Bed Methane (CBM) development well drilling project in Raniganj CBM Block

located in Raniganj coalfield located about 190 km northwest of Kolkata. Raniganj CBM Block,

spread over an area of 350 sq. km. includes 240 sq. km. area in the northern part (termed as

Sector-A) and the jointly identified 110 sq. km. area in the south/south central part (termed as

Sector-B) of Raniganj Coalfield was awarded to the ONGC-CIL Consortium (ONGC-

74%, CIL-26%) on nomination basis by Government of India in January 2002 with ONGC as

the operator.

The contract between Govt. of India (GoI) and ONGC-CIL consortium was signed on 06.02.03

for the Raniganj CBM Block and the PEL for this area was subsequently granted by Govt. of

West Bengal on 09.06.04 (effective date), please refer Annexure I. Subsequent extension of

PEL has been provided in Annexure II of the report. Prior to the award of Raniganj block

(jointly with CIL measuring 350 sq. km.), ONGC held PEL for the northern sector (240 sq.km.)

w.e.f. 23.11.1999. During this pre-policy regime, ONGC drilled 7 core holes to assess the CBM

potential of Barakar coal seams of this area. Marginal to poor CBM prospect of the northern

sector (Sector-A) and addition of new area led to focus the exploration and pilot phase MWP

in Sector-B.

Exploration phase of Sector B was completed with two extensions of six months each, while

three extensions were sought and granted by GoI during pilot phase on account of LAQ issues

in the area. One exploratory and two pilot wells drilled during Phase-I and Phase-II

respectively, are presently under dewatering and gas break has been recorded in all wells,

although sustained flow of gas has not been achieved yet. Pilot phase of the block gave

encouraging results for all the wells, a Development Plan for the block was submitted, two

months prior to expiry of pilot phase, as per the CBM contract.

The present development plan envisages drilling of 80 vertical, hydraulically fractured

Development wells. The present Development Plan also covers all the prospective parts of

Sector-B of the Raniganj Block. Some of the areas with marginal potential (largely on account

of depth >1350m) have been planned for future assessment. Western part of Sector B and

almost entire Sector A has been considered for assessment on account of uncertain CBM

potential. An area of 34km2 of north eastern part of Sector A around Ajay river has been

relinquished on account of very low CBM potential and difficult logistics. Thereafter another

2.68km2 pertaining to proposed Kabitirtha Coal block in Sector A and 1.53km2 pertaining to

Andal Babuisole Coal block in Sector B was also relinquished under MoP&NG & MOC

directive. Please refer Figure 3.1 for the same. Therefore, present area of CBM block is

311.79km2 after relinquishment of 38.21km2



1.2 Brief description of nature, size, location of the project

The proposed Raniganj CBM block, is majorly located in Burdwan district, with smaller

portion in Bankura district. The total PEL area of the block is 311.79km2. The Kolkata-Delhi

National Highway (NH2) as well as the Kolkata-Delhi. Main/Grand Chord lines of Eastern

Railway traverses through the middle of the coalfield. The surrounding areas are also well

linked by a good network of roads and branch lines of Eastern Railways. Near Andal the

railway network is so intricate it has forced the operator to increase the number of production

hubs in order to avoid crossing of pipe lines across the railway tracks. Both the sectors are in

close proximity to the industrial belt of Durgapur-Raniganj-Asansol. This area is very densely

populated due to the rapid urbanization in the recent years. The location map with

administrative boundary is shown in Figure 1-1.



Figure 1-1: Site Location of Raniganj CBM block



1.3 Purpose of EIA

As per the EIA Notification 2006, proposed CBM exploratory drilling operation project comes

under Schedule 1(b) of Category ‘A’ projects and required environmental clearance from

Ministry of Environment and Forests (MoEF&CC). None of the General Conditions (GC) as per

this notification is applicable for exploratory drilling project of onshore oil and gas

exploration. According to this notification, Form I along with proposed Terms of Reference

(ToR) and Pre- feasibility Report is submitted to MoEF&CC, vide letter no.

ONGC/CHSE/TOR/2013-/14 dated 12.12.2013. MoEF&CC has issued Terms of Reference

(ToR) vide F. No. J-11011/374/2013-IA II (I) dated 5th March, 2014, which is enclosed as

Annexure III valid for a period of two years from the date of issue.

The purpose of this report is to document outcomes of the Environmental Impact Assessment

(EIA) study carried out for proposed exploratory drilling operation in the CBM block owned

by ONGC Limited in consortium with Coal India Limited (CIL) has retained Arcadis India

Private Limited (Formerly known as M/s SENES Consultants India (P) Limited) to conduct

the Environmental Impact Assessment study for proposed exploratory drilling operation in line

with the ToR issued by MoEF&CC.

1.4 Objective of EIA study

Objectives of the proposed study are as follows:

Establish the prevailing baseline environmental and socioeconomic condition of the

project sites and their surroundings along with the compliance needs for

environmental approvals to be able to carry out site selection and well planning;

Assess environmental, socioeconomic and health impacts arising out of the

proposed project and its associated activities;

Recommend appropriate preventive and mitigation measures to eliminate or minimize

pollution, environmental and social disturbances during the life-cycle of the project

ensuring compliance with the environmental laws and regulation applicable;

Integrate mitigation measures to the existing ONGC’s HSE requirements so that they

can be implemented, monitored and suitable corrective action can be taken in case of

deviations;

Identify and propose alternative actions in terms of technology and practices that may

help in abating impacts due to the project;

1.5 Scope of EIA study as per Terms of Reference

The basic scope for this study involves conducting an EIA study to understand the environmenta l

and social impacts of the project in line with the existing test and pilot well drilling activit ies

currently being undertaken at the block and recommend suitable preventive/ mitigation measures

through the Environment Management Plan (EMP). The scope for the study finalized in close

consultation with ONGC has been summarized below:



Conducting a reconnaissance visit to assess the environmental and socio-economic

setting of the block;

Understanding the existing activities conducted by ONGC in the block posing

adverse impacts on environment and socioeconomic integrity of the area;

Undertaking site visits for collection of primary and secondary information on

environmental and social setting in the Raniganj CBM Block;

Formulating primary environmental monitoring plan and conducting monitoring of the

environmental components as per the plan;

Carrying out Public Consultation & Public Hearing;

Assessing environmental and social impacts, risk assessment; and

Formulating Environmental Management Plan & Risk management plan

The EIA study is carried out based on the ToR issued by MoEF&CC and above-mentioned

scope of work. The EIA report covers point wise compliance of the ToR (Refer Table 1.1)

and is systematically documented and being formally presented in this report.



Table 1-1: Compliance of TOR Points

S.N TOR Point Compliance Reference in EIA Report

1. Executive summary of a project Executive summary of the project is prepared and enclosed at the beginning of the EIA

report

Please refer Executive Summary from Pg. xvi - xxiv

2 Details of existing land use pattern within the proposed CBM block (cropping

pattern, forest, agricultural land, wasteland etc. flora and fauna etc.)

Rice is the most important crop grown in the study area. The major cropping patterns

include paddy-wheat-vegetables, paddy – potato – sesame, paddy – vegetable – mustard

and jute – paddy – vegetables. The block is divided into two sectors A and B. Both

sectors (A and B) have maximum percentage of land use covered under agriculture

80.87% and 60.53% respectively. Sector A has Kulti and Jamuria Industrial area.

Durgapur and Raniganj Industrial area is covered under Sector B. A small percentage

3.43% of forest covers Sector B. There are two Protected Forest namely Ukhra

Protected Forest in Burdwan district and Gangajalghati Protected Forest in Bankura

district which fall in Sector B.

Please refer Section 4.3 (Pg. 81-83)

3 Details of land acquisition w.r.t private land, Govt. land, agricultural land,

mode of compensation for land losers due to land acquisition and R&R etc.

ONGC is presently acquired 10.65 acre of land. Also ONGC is in the process of

identification of remaining portion land for the project. However based on

interpretation CBM block land use it is anticipated that majority of these wells are likely

to be located on private agricultural land.

Further no well will be located in the settlement area. Thus no physical displacement

and resettlement and rehabilitation is anticipated.

Refer Section 3.4.1 (Pg. 38)

4 Information regarding eco-sensitive area such as national park/wildlife

sanctuary /biosphere reserves within 10kms radius of the project area.

No national park / wildlife sanctuary / biosphere reserves are located within 10 km radius of the block.

Refer Biological Environment Section Section 4.6 (Pg.

116-124)

5 Details of forest land involved in the proposed project. A copy of forest

clearance letter, if applicable

There are two Protected Forest namely Ukhra Protected Forest in Burdwan district and Gangajalghati Protected Forest in Bankura district, which fall in Sector B. All the proposed activities will be undertaken outside the forest area. No forest clearance required.

Refer Biological Environment Section 4.6.2 (Pg. 117-121)

6 Permission from the State Forest Department regarding the impact of the

proposed drilling on the surrounding reserve forests, if applicable.

A small percentage 3.43% of forest area occupies Sector B. Further no well will be

located in the forest or in the vicinity of the forest. All the proposed activities will be

undertaken outside the forest area. Thus no impact of the project on forest land is

envisaged. Hence, permission from the State Forest Department will not be required.

7 Environment clearance for the existing unit issued by the Ministry (reasons, if not obtained), Consent to Operate and Authorization accorded by the WBPCB.

Phase II program has been accorded EC by MoEF

Refer Annexure VI for Consent to operate

Refer Annexure VI

8 Confirmation with documentary support indicating allocation of the block solely to M/s ONGC.

Block allotment letter reference No. 146 (2) CI/O/CBMONGC/001/02/MI dated

9.06.2004

Please refer Annexure I

9 Is the block allocated for mining also? If yes, name the company During the site survey, it was observed that a part of the block is allocated to Eastern Coalfields Limited, a Subsidiary of Coal India Limited (C.I.L.) for mining

10 Comprehensive proposal covering surface facilities, pipeline/gas collection system, utilities etc.

Pipeline network of suitable sizes ranging from 4” to 18” based on the estimated gas

flow rates after drilling, will be laid to interconnect the production wells with GCS.

Four mini gas collection station (GCS – R1, R2A, R2B and R3) have been proposed.

Refer Section - 3.4 under Project Description chapter (Pg.

38-45)

11 Design details of all the plants including CGS, GGS and technology to be used for CBM project.

Development and Production Program mentioned in (Phase III) of Chaptor -3 Refer Section 3.4.5 (Pg. 45-59)

12 Location of core holes outside the forest area. The well sites shall be selected at more than 1.5 km away from the habitation. Forest and revenue land shall be avoided as far as possible.

The production well sites will be located outside the forest area.

13 Baseline data collection for air, water and soil for one season leaving the monsoon season in an area of 10 km radius with centre of CBM Field as its centre covering the area of all proposed drilling wells. It includes;

The Baseline environmental data have been provided in Chapter 4 and details data Tables are provided at Annexure document

Please refer Chap 4 (Pg. 69-139) Annexure XI to XVIII




(i) Topography of the project site Gently, undulating terrain with highest elevation in the central part of Raniganj

Coalfields area and sloping towards north and north-east i.e. towards Ajoy River and

towards south i.e. towards Damodar River is observed.

Please refer 4.3.3 (Pg. 84-85)

(ii) Ambient Air Quality monitoring at 10 locations for PM10, SO2, NOx, VOCs,

Methane and non-methane HC.

The ambient air quality is monitored at 10 representative locations of the block.

The average 24 hourly PM10 in these locations is found within NAAQS limits

except three locations. The mean average value for SO2 monitored at all eight

locations ranged between 12.9-21.6 µg/m3 i.e. well below the permissible limit

set by CPCB i.e. 80 µg/m3

Please refer 4.1.4 (Pg. 76-78) and detailed results in

Annexure XII

(iii) Soil sample analysis (physical and chemical properties) at the areas located at

5 locations.

The textural class predominately as per the soil samples analyzed for their silt, sand and

clay ratio is Clay Loamy soil in the study area.

Refer Section 4.3.6 (Pg. 90-93) and detailed results in

Annexure XIII

(iv) Ground and surface water quality in the vicinity of the proposed wells site. Total Coliform results for all five ground water samples analyzed shows Total coliform

<2.0MPN/100ml.

The five surface water samples monitored in Sector B conform to Class C i.e. Drinking

water source after conventional treatment and disinfection.

Please refer section 4.4.5 for Ground water quality

monitoring details (Pg. 110-113) and Section 4.4.2 for

surface water quality monitoring details (Pg. 104-108)

(v) Climatology and Meteorology including wind speed, wind direction,

temperature, rainfall relative humidity etc. The predominant wind direction during study period is observed to be from NW

– SE direction. Average wind speed was observed to be 0.80m/s. The maximum

temperature of Burdwan district is recorded as 39°C and the minimum temperature as

7°C.

Please refer section 4.1.1 (Pg. 70-72)

(vi) Measurement of Noise levels (day and night both) within 1 km radius of the

proposed wells. Noise Level was monitored at 10 locations within the block. Noise levels during

day time ranged between 45.6 to 54.4dB (A) and during night time between 36.1

to 42.7dB (A).

Please refer section 4.1 (Pg. 78-80)

(vii) Vegetation and land use; Animal resources The vegetation of the forest areas falling in the block is categorized as Northern

Tropical Dry Deciduous Forest type

Please refer section 4.6 (Pg. 116)

14 Action plan to control ambient air quality as per NAAQS Standards for PM10, PM2.5, SO2 , CO and NOX as per GSR 826(E) dated 16th November, 2009.

Impact on Air Quality included in Chaptor – 5 and Pollution Prevention and

abatement in Chaptor - 7

Refer Section 5.2.2 (Pg. 144-157) and 7.1.1 (Pg. 214-

215)

15 Actual source and ‘Permission’ for the drawl of water from the concerned authority.

Drinking water requirements will be met through provision of packaged water.

In case of non-availability water it will be sourced from existing ground water

wells after approved local suppliers and from nearby municipal corporation.

Groundwater of all blocks of Burdwan district fall under Safe category as per

CGWB categorization for groundwater development.


16. Action plan for management of produced water. Produced water management plan emphasized on the use of produced water for

irrigation purpose after RO treatment. The RO reject water can be used for dust

sprinkling in the nearby opencast coal mines.

(Refer Section 7.1.3- Produced Water Management

Plan) (Pg. 219) Please refer the produced water

analysis report in Annexure IV

17 Details of wastewater treatment method should be included. It is proposed that the produced water will be utilized for simulation job/ drilling

operation or allowed to evaporate naturally from the evaporation pit.

Refer Section 3.4.8 – CBM Produced Water and

Section 3.6.5- Domestic Waste (Pg. 52) as well as sec.

7.1.3 (Pg. 219). Please refer the produced water

analysis report in Annexure IV

18 Reuse of produced water for drinking after treatment / pisicuture / ground

water recharge / irrigation / coal washing/power generation etc.

Produced water management plan emphasized on the use of produced water for

irrigation purpose after RO treatment. The RO reject water can be used for dust

sprinkling in the nearby opencast coal mines.

Refer Section 7.1.3 – CBM Produced Water (Pg. 219).

Please refer the produced water analysis report in

Annexure IV

19 Extent and duration of flaring of methane gas during exploration. This has been provided in Annexure XXII This has been provided in Annexure XXII




20 Analysis of gas w.r.t. H2S. Analysis of gas generated from Phase II wells revealed absence of hydrogen sulphide gas (Refer Annexure VII- CBM Gas Analysis Report)

Refer Annexure VII

21 Noise monitoring should be carried out at the nearest villages. Noise monitoring was carried out at 10 locations close to the villages Refer Section 4.2 (Pg. 78) and Table No. 4.6

22 Measures to control noise pollution. Impact on noise quality is detailed out in Section 4.1- Impact on Noise Quality.

Measures to control Noise and Vibration during construction of well site, surface

facilities and pipeline laying; drilling of production well, CBM production, GCS

operations; and decommissioning/site closure is detailed in Section 7.1.1- Pollution

Prevention and Abatement Plan

Refer section 5.2.3 : Impact on noise quality (Pg. 157) and

Sec. 7.1.1 (Pg. 219)

23 Assessment of generation of solid and hazardous waste and its characteristics from the operator

Drill cuttings of sand, shale, siltstone and coal will be generated, the quantity

will be about 50-55 m3 by volume per well. The earth cuttings generated at drill site will be mostly inorganic in nature and can be used either for land filling or road making.

Refer Section 3.6.7- Drill Cutting (Pg. 65) and Drill

Cutting Analysis Results (Annexure VIII)

24 Proposed measures for treatment and disposal of solid and hazardous waste. Drill cuttings separated from drilling fluid will be adequately washed and temporarily stored and disposed in an impervious pit lined by HDPE. The

hazardous waste (waste and used oil) will be managed in accordance with Hazardous Waste (Management, Handling & Trans boundary Movement)

Rules, 2008.

Treatment and disposal of solid and hazardous waste is

provided in Section 3.6.6 and Section 3.6.7- Drill Cutting

(Pg. 64-66) as well as Sec 7.1.2 (Pg. 214-218)

25 Storage of chemicals at the site, proposed preventive measures for spillage and accidents

Spill kits will be made available at all fuel and chemical storage areas. All

spills/leaks contained will be reported and cleaned up immediately. Drip

pans/trays will be used in areas identified having spillage potential but not

limited to drill rig engine; electric generator engine; pumps or other motors;

maintenance areas; fuel transfer areas.

Refer Section 3.5.4– Chemical Usage (Pg. 61) & Section

7.1.1 – Pollution Prevention and Abatement Plan (Pg. 214-

218)

26

Developing emergency response plan and disaster management plan

Refer Section 6.4– Disaster Management

(Pg. 200)

27 Capping of core holes in case of emergency. Fire/ explosion risks due to leakage of high pressure gas from flange joints or

due to pin hole rupture in vessel and pipeline. However taking into account the low density of CBM gas any formation of flammable vapour cloud leading to explosion is unlikely.

Refer Section 3.6..8 – Drilling & Other Hazards (Pg. 65- 66)

28. Statistical data of accident occurred so far during CBM exploration. Pipeline Failure Frequency from European Gas Pipeline Incident Data Group (EGIG) database is given in Section 6.2.2 – Frequency Analysis


29 Identification of hazard prone operations and asses the damage. The QRA is carried out as per standard to identify the hazard prone operation and to assess the damages.

Refer Section 6.2.1 –Hazard Identification and 6.2.3 – Consequence Analysis (Pg. 182-183)

30 The post project closures plan, if the project is not economically viable. Site closure would involve the following steps : Plug & Abandon the well; Isolation of the Pipeline ;Decommissioning Phase; Reinstatement Phase: regeneration of the land Handover Phase

The pose project closure plan is developed for this project and provided in Section 7.1.7 – Site Closure Plan (Pg. 226- 228)

31 Detailed Environment management Plan (EMP) with specific reference to details of air pollution control system, water & wastewater management, monitoring frequency, responsibility and time bound implementation plan for mitigation measure should be provided.

Proper management plans has been discussed to manage impact on air quality, ground water quality, surface water quality, traffic load, soil quality, noise level

and socio-economy of the block area.

Refer Section 7 – Environmental Management Plan (Pg. 212-230)

32 Details of occupational health surveillance programme. Regular health check up of personnel conducted as per ONGC Periodic Medical

Examination Policy (Refer Annexure IX)

Refer Section 7.1.5 – Occupational Health and Safety Management Plan (Pg. 224-225)




33 Social impact assessment should be carried out. Social Impact Assessment is carried out and provided in Chapter -5 Refer Section 5.2.10 (Pg. 170-173)

34 Action plan for post-project environmental monitoring. Environmental Monitoring program is included in Chaptor -7 Refer Section 7.2 (Pg. 233-238)and Table 7.6

35 Corporate Environmental Responsibility

a. Does the company have a well laid down Environment Policy approved by its Board of Directors? If so, it may be detailed in the EIA report.

b. Does the Environmental Policy prescribe for standard operating process/procedures to bring into focus any infringement / deviation / violation of the environmental or forest norms / conditions? If so, it may be detailed in the EIA report.

c. What is the hierarchical system or Administrative order of the company to deal with the environmental issues and for ensuring compliance with the EC conditions. Details of this system may be given.

d. Does the company have a system of reporting of non compliance / violations of environmental norms to the Board of Directors of the company and / or shareholders or stakeholders at large?

e. This reporting mechanism should be detailed in the EIA report.

ONGC Limited has a well laid down Environment Policy approved by its Board of Directors (Refer Section BOX: 7.1–ONGC Corporate Environment Policy)

Environmental policy of ONGC prescribes to comply with the Environmental Protection Laws of the land.

ONGC has a well formed hierarchical system for CBM development at Raniganj

Please refer Section 3.9 (Pg. 67)

Please refer Annexure X

Please refer Annexure X

36 Public hearing issues raised and commitments made by the project proponent on the same should be included separately in EIA/EMP. Report in the form of tabular chart with financial budget for complying with the commitments made.

To be provided after Public Hearing

37 Any litigation pending against the project and /or any direction /order passed by any Court of Law against the project, if so, details thereof.

No litigation is pending against the project.



In addition to the above- mentioned points, due care was taken to address general points

of approved ToR issued by MoEF dated 05.03.2015, while preparing this EIA report. As a part

of this, against the general point no. 40. (vii), the appointed consultant, SENES Consultants

India Pvt. Ltd. is registered under QCI/NABET scheme and has got accreditation for a total of

11 sectors including “Offshore and Onshore Oil and Gas Exploration, Development and

Production”. Details about QCI accreditation and list of QCI accredited sectors and personnel

are provided at the beginning of the EIA report.

1.6 Structure of the EIA report

This EIA report documents the results and findings of the study undertaken by SENES. The

subsequent section of the report presents the description of the project activities, environmenta l

and social baseline scenario and the outcome of assessment of the impacts that may arise during

the lifecycle of the proposed CBM project. Following impact assessment, the mitiga t ion

measures that will help in preventing and mitigating negative and unacceptable environmenta l

impacts are also presented. The report is structured as follows:

Chapter 2 : Regulatory and Legal Framework

Chapter 3 : Project Description

Chapter 4 : Description of Present Environment

Chapter 5 : Environmental Impacts

Chapter 6 : Quantitative Risk Assessment

Chapter 7 : Environmental Management Plan and Monitoring Framework

Chapter 8 : Public Consultation

Chapter 9 : Summary and Conclusion

Chapter 10 : Disclosure of Consultants

1.7 Regulatory Scoping of the Project

The first UN Conference on Human Development & Environment was held at Stockholm,

Sweden, in June 1972, which emphasized on the need for formulating appropriate legal

mechanism and framework to conserve resources, protect the environment and ensure health

and well-being of people of India. Over the years, the Government of India has framed several

policies and promulgated a number of Acts, Rules, Notifications and Standards aimed at

conservation and management of environment. As a result of this, India, now, has a fairly

comprehensive set of environmental legislation and standards aimed at ensuring that the

development process meets the overall objectives of promoting sustainability in the long run.

Moreover, the Indian Constitution has also incorporated specific articles to address

environmental concerns through the 42nd Constitutional Amendment of 1976.

1.7.1 National Environmental Policies

A series of environment policy statements have been announced in the last few decades as a



part of the Governments’ approach to integrate environmental and developmental aspects

together. The policies reflect a gradual shift in emphasis from pollution abatement and control

to proactive and voluntary approaches for pollution prevention, besides keeping pace with

global paradigm shifts and trends in environment management. Following are some of the key

policies that have been laid down by the Central Government:

National Forest Policy, 1988

National Conservation Strategy and Policy Statement on Environment and

Development, 1992

Policy Statement on Abatement of Pollution,1992

National Water Policy, 2002

Despite these policy documents, a need for comprehensive policy statement had been

evidenced over time to introduce a common linkage between various sectoral and cross-

sectoral approaches of environmental management. As a result, a National Environment Policy

(NEP, 2006) has been drawn up as a response to India’s national commitment to a clean

environment, which was mandated in the Constitution in Articles 48 A and 51 A (G) thereby

strengthened by judicial interpretation of Article 21. The National Environment Policy deals

with the key environmental challenges, regulatory reforms, environmental standards, re-

emphasizing conservation of environment resources and stakeholder involvement.

1.7.2 National Legal Provisions for oil and Gas Projects

The proposed project will be governed by various acts, rules and regulations set by Ministry of

Environment and Forests (MoEF) at the national level and other regulatory agencies at the state

and local level. Various environmental standards, specifications and guidelines of Central

Pollution Control Board (CPCB), West Bengal Pollution Control Board (WBPCB) and other

district level agencies will also be applicable. The proposed project of exploratory drilling is

governed by the Oilfields (Regulation and Development) Act, 1948 and Petroleum & Natural

Gas Rules, 1959, which make provision for the regulation of petroleum operation and grants

licenses and leases for exploration, development and production of petroleum in India. It is

important to note here that the Central government has framed “umbrella legis lation”, called

the Environment (Protection) Act, 1986 to broadly encompass and regulate an array of

environmental issues. However, the following Table 2.1 gives an idea of the specific regulatory

requirements associated with this particular project during various phases of its lifecycle, to

assist in complying with the legislation applicable.



Table 1-2: Regulatory Requirements Associated with Oil and Gas Drilling at CB-ONN-2010/11

Activity Applicable Legislation Requirement Citation

Drilling of Wells Air (Prevention & Control of

Pollution) Act, 1981 and

Water (Prevention & Control

of Pollution) Act.

Before the commencement of any project activity, ONGC has to obtain a CTE/NOC. This NOC has to be

subsequently followed by Consent to Operate (CTO) before drilling operations can be commenced at site. No person

will establish or operate any activity, which can cause air or water pollution without obtaining Consent to Establish

(CTE) as per the Air and Water Acts.

Protection of Air Quality

Protection of Water Quality

According to Section 21 of the Air (Prevention & Control of Pollution)

Act, 1981 and Section 25 of the Water (Prevention & Control of Pollution)

Act, 1974.

In compliance to Industry specific standards for oil drilling and gas

extraction industry –Point B “Guidelines for Discharge of Gaseous

Emission by DG sets” and in compliance with National Ambient Air

Quality Standards, posted by CPCB, 2009.

In compliance to Industry specific standards for oil drilling and gas

extraction industry –Point A-Standards for Liquid Effluents

Under Water Pollution Act, 1974 obtaining consent to establish as per

form XIII

Drilling of Wells The Explosives Rules, 1983 License for Storage of Petroleum Products & Explosives According to this Rule, license is required for manufacture, storage

(possession), sale and/or use, transport, import, export of explosives, etc.

Drilling of Wells The Petroleum & Natural

Gas Rules, 1959

ONGC is required to obtain a Petroleum Exploration License (PEL) from the West Bengal Government prior to the

exploration of block for any hydrocarbon reserves.

Section 4: No person shall prospect for petroleum except in pursuance of a

petroleum exploration license granted under these rules, M/s ONGC-– CIL

(Coal India Limited) consortium has obtained PELon 09.06.2004.

During the license period, if any discovery (minerals) is made, license has to immediately report to the State

Government and Director of Petroleum with full particulars. According to PEL order terms and conditions, point 5

Licensee shall issue identity card to each of the employees. According to PEL order terms and conditions, point (19)

Drilling of Wells Oilfields (Regula tion and

Development) Act, 1948 Section 6 (d): Power to make rules as respects development of mineral oil.

The regulation of the drilling, redrilling, deepening, shutting down, plugging

and abandoning of oil-wells in an oilfield and for the limitation or

prohibition of such operations and for the taking of remedial measures to

prevent waste of or damage to oil;

Drilling of Wells Production Sharing Contract It demands impact assessment study for drilling operations to prepare EIA along with EMP and approval of the same

from the Central Government (Ministry of Environment and Forests). According to Section Protection of Environment, Point 14.4

Drilling of Wells Oil Mines Regulations 1984

(OMR) under the Mines Act,

1952

Covers safety aspects, storage of material and protection against pollution of environment at the drill site. According to point 38 (Storage of Materials) under Oil Mines regulations,

1984.

Drilling of Wells Noise Pollution (Regulation

and Control) Rules, 2000

Ensure compliance with Ambient Noise Standards in accordance with land use of the area In compliance to Rule 3 and 4 under Noise Pollution (Regulation and

Control) Rules, 2000

Drilling of Wells EIA Notification, 2006 under

the EPA, 1986

It demands all offshore and onshore oil and gas exploration, development and production projects to get

Environmental Clearance from MoEF; however the seismic activity is exempted from Environmental Clearance

According to EIA notification, 2006: Schedule 1 (b)–List of projects

requiring Environment Clearance

Drilling of Wells Haza rd ous Waste

(Management, Handling &

Trans boundary Movement)

Rules, 2008 (as amended)

Obtaining authorization from SPCB for generation, handling and storing of hazardous waste like drill cuttings, waste

oil, ETP sludge etc. Following guidance for handling, storing and disposal of such hazardous waste

As per chapter 2,3 and 5 under Hazardous Waste (Management, Handling &

Trans boundary Movement) Rules, 2008 (as amended)

Drilling of Wells Manufacture, Storage &

Import of Hazardous

Chemicals Rules, 2000 (as

amended)

Notifying regulatory authority (in this case, the State Factories Inspectorate) of storage of hazardous substances like

Petroleum products.

Follow guidance on such storage, maintain updated MSDS, submit annual Safety Report to authority.

Prepare Onsite Emergency Plan.

As per Rule 2 under Manufacture, storage and Import of Hazardous

Chemical Rules, 2000 (amended).

Drilling of Wells Motor Vehicles Act (MVA)

and Rules, 1989 (MVR)

Pollution Under Control Certificate (PUCC) will be required for all the vehicles operating within the site.

Proper labeling of the vehicles carrying hazardous substances.

As per Central Motor Vehicles Rules 1989

Drilling of Wells Petroleum Act and Rules,

2000

Obtain License for Storage of Petroleum Substances

Comply with guidance and safety measures for storage and transportation of petroleum substances for the project

As per chapter V under Petroleum Act and Rules, 2000



Activity Applicable Legislation Requirement Citation

Drilling of Wells The Explosives Acts, 1984

with Rules, 1983

Obtaining license for storage of explosives

Complying with guidance and safety measures for storage and transportation of petroleum substances for the project

As per Clause 6(B) under Explosives Act 1884.

Drilling of Wells The Wildlife (Protection)

Act, 1972

Refers protection to the species of flora and fauna and wildlife habitat to establish a network of ecologically important

protected areas

As per chapter III A and chapter IV.

Drilling of Wells The Ancient Monuments and

Archaeological Sites and

Remains Act, 1958 and

Rules, 1959

Refers protection of archaeological sites, ancient monuments and demands fencing or covering and/or otherwise

preserving such monuments and sites

As per section Archaeological Monuments (pt. 21-24); Protected Area (19-

20) and Protected Monuments (5-18)

Drilling of Wells Environment (Protection)

Act, 1986 with Rules

Overall environmental protection

Compliance to general environmental (Air, Water and Noise) standards issued under Environment (Protection) Rules

Disposal of solid waste, drill cutting and drilling fluid for drilling operations notified vide notification G.S.R.546 (E)

dated 30th August, 2005

Compliance to MINAS of Oil Drilling and Gas Extraction industry as notified vide notification dated GSR 176 (E)

April 1996

According to EPR rules 1986, guidelines given under Oil Drilling and Gas

Extraction Industry A, B and C.



1.8 Environmental Clearance and Permitting

This section discusses some of the specific regulatory requirements associated with this

particular project along with some common legislation applicable to the proposed exploratory

drilling operation in Raniganj CBM block.

1.8.1 Submission and Approval of EIA as per Production Sharing Contract

A Production Sharing Contract (PSC) was signed between the Government of India and Oil

and Natural Gas Corporation Limited (ONGC, Ltd.), according to which an Environmenta l

Impact Assessment (EIA) study has to be carried out for drilling. Study will assess prevailing

situation with respect to the environment, human beings and local communities- the wildlife

and forest resources, presence of any ancient or historical sites of cultural importance in the

proposed contract area and in the adjoining or neighboring areas and concentrate on

establishing the likely impacts, that may arises from the proposed drilling operations. The

impact assessment study has to be accompanied by appropriate mitigation measures and an

Environment Management Plan (EMP) to minimize negative impacts of the project on

environment. As per the provision of PSC, the documented EIA report has to be submitted to

the Ministry of Environment and Forest (MoEF) for approval before the commencement of

drilling operations.

1.8.2 Administrative Permissions as per the Petroleum Exploration License (PEL)

In exercising of powers given in Petroleum and Natural Gas Rules, 1959, the Government of

West Bengal has granted Petroleum Exploration License to ONGC on certain terms and

condition. As per the provision of PEL, ONGC has to bring details of minerals found in the

area during exploration work unto the notice of the Central Government. ONGC will keep with

them equipment’s, supplies and means to extinguish fire and in case of any damage caused by

fire, ONGC has to compensate to third party and/or Government, as the case may be. ONGC

has to submit detailed results of all operations associated with activity to Central Government

every six months. ONGC has to issue identity card to each employee working in this project

and has to carry out regular checking of their identity, besides ensuring security of their

personnel. The proposed drilling of wells will be carried out on the strict condition that, no

drilling work will be carried out in and around the lake or residential area and/or any sensitive

area. Roads and natural drainage of the area has to be kept clear, open and intact. ONGC will

not damage any object of public interest in any form during carrying out drilling, neither will

it cause harm to existing infrastructure, underground utility or human beings. The same has

been summarized in Table 2.1 above.

1.8.3 Environmental Clearance as per EIA Notification

The new EIA Notification, dated 14th September, 2006 is administered by the Ministry of

Environment and Forests at the Central Government level. According to the new notificat ion,

new or expansion or modernization of any activity falling within the Schedule, (which specifies

eight categories of developmental and industrial activities) can be undertaken in any part of



India only after obtaining environmental clearance from the MoEF/ State Environment Impact

Assessment Authority (SEIAA) in accordance with procedures specified in the notificat ion.

This involves use of “Environmental Impact Assessment” study as a decision-making tool.

The proposed exploratory drilling operation for gas comes under Schedule 1 (b) of EIA

Notification; hence it requires Environmental Clearance from MoEF. As per the provision of

EIA Notification, ONGC has already submitted an application to MoEF in prescribed Form-I

along with proposed Terms of Reference (TOR) and has received approved TOR from MoEF

vide F. No. J-11011/374/2013-IA II (I) dated 5th March, 2014.

1.8.4 Consent to Establish and Operate – No Objection Certificate (NOC)

According to Section 21 of the Air (Prevention & Control of Pollution) Act, 1981 and Section

25 of the Water (Prevention & Control of Pollution) Act, 1974, no person will establish or

operate any activity, which can cause air or water pollution without obtaining Consent to

Establish (CTE) as per the Air and Water Acts.

The NOC would contain a set of site specific environmental safeguards and standards for air,

water and noise pollution as also for handling and disposal of hazardous waste which have to

be complied by ONGC at the drill sites. This NOC has to be subsequently followed by Consent

to Operate (CTO) before drilling operations can be commenced at site.

1.8.5 Water Uptake

The water required for the proposed drilling operation and domestic activities will be obtained

mainly from local surface water bodies, namely Damodar River (depending upon the

availability of water in them) or any other authorized source.

1.8.6 License for Storage of Petroleum Products & Explosives

The Explosives Rules, 1983, was framed to regulate the manufacture, possession, sale, use,

transportation and import of condensed explosives. The Explosive Rules, 1983, deals with

condensed explosives like high explosives (dynamite, detonators etc.) fireworks and low

explosives (safety fuse etc.). According to this Rule, license is required for manufacture,

storage (possession), sale and/or use, transport, import, export of explosives, etc. According to

The Explosive Rules, 1983, explosives are divided into 8 classes; Class 1 to 8 and any person(s)

wishing to possess any of the explosives have to take a license in the prescribed Form 22 or

Form 23, depending upon nature and quantity of explosives.

ONGC has to apply to the Chief Controller or Controller of Explosives authorized by Chief

Controller or District Authority as the case may be (depending on the Class of explosives and

its quantity), for possessing explosives. For secure and safe storage of explosives, a portable

magazine can be set up with necessary approval from Chief Controller of Explosives. Since

drilling activity will last for no more than 15 days, ONGC can also prefer use of road van or

trucks for carrying out explosives. In case of use of road van, ONGC will need to take the

license from authorized controller in the prescribed Form 25. Storage and transport

specifications obeying rules and license conditions will need to be adhered.



1.8.7 Siting of Project and Physical Occupation

Project Siting

The major consideration of the site selection is geological formation. Due consideration would

be given on the same by ONGC, all locations selected by ONGC would be based on geologica l

data available. Suitable drilling locations would be selected based on the physical (terrain and

access) and technical suitability. Detailed drill site and access road survey will be carried prior

to land procurement and construction of drill site. Selecting drill site’s environmenta l

considerations is as below:

Non-forest area and area with low vegetation.

Away from organized human habitats.

Easy access to area of interest

Away from sensitive ecological habitat and migratory route

Detailed drill site and access road survey will be carried prior to taking the land on a lease

basis and construction of drill site. During the site selection process, all legal requirements will

be considered and surface location finalized. Once surface drilling location is finalized, land

acquisition will be done. On one hand, if well location falls in agricultural lands, compensation

for the standing crops will be provided to the land owner.

Prevention of Damage to Adjacent Properties and the Environment

According to PEL’s terms and conditions, ONGC will take permission under relevant rules,

regulations, orders etc. of concerned Government Authorities or any other agency as the case

may be for carrying out PEL activities. No drilling work or installations of pipeline shall be

carried out in and around villages, lake or residential area. If the work has to be carried out in

the land owned by Gram Panchayat permission of appropriate authority shall be taken before

beginning the work. All approach roads and natural drainages should be kept clear, open and

intact. No work shall be carried out as to damage public interest in any form. No existing

infrastructure public or private underground utility and human beings to be harmed.

Well locations will be strictly confined within the Raniganj CBM block. According to PSC, if

operation of ONGC endanger people or any adjacent property, or cause pollution resulting in

harm to wildlife or the environment around the drill site- to a degree that the Government (here

meaning the District Administrator or Collector) deems unacceptable, it may direct ONGC to

take remedial measures. This should be within a reasonable period of time (as may be

determined) and be made to repair any damage caused to environment.

The PSC requires ONGC to prepare an emergency plan to deal with spills, fires and other

accidents like a possible blowout of the well. The plan will be designed to achieve rapid and

effective emergency response. In case of emergency situations, ONGC will promptly report

such accidents to government authorities and take necessary control and remedial action based

on international best practices.



In addition, the Oil Mines Regulations Act, 1984 (OMR) deals with issues related to safety,

storage of materials and protection against pollution of environment from drilling operations.

As per provisions of this Act, ONGC needs to notify accident like blowout; prepare area plans

where drilling operations are carried out, surface plan showing railways, power transmiss ion

lines, public roads, existing buildings or other permanent structures - not belonging to the

owner, rivers and water courses within the drill site and its surrounding areas; ensure protection

against pollution of environment arising out of discharge of formation water, oil, drilling fluid,

waste, chemical substances or refuse from a well, tank or other production installation which

may create hazard to public health and safety, contaminate any fresh water source and run over

or damage any land, highway or public road.

1.8.8 Design Process & Equipment/Material Selection

Noise Standards and Controls for Equipment

The EPR lays down equipment specific noise emission standards for DG Sets, air conditioners

and construction equipment’s, which will be used for the proposed drilling activity. Specific

standards for control of noise from DG sets and various measurements need to be taken for

reduction of noise. This has also been specified in the Environment (Protection) Second

Amendment Rules, 2002, specified through notification GSR 371 (E) on 17th May, 2002.

According to provisions of this Rule, maximum permissible sound pressure level for new diesel

generator (DG) sets with rated capacity of upto 1000 KVA, manufactured on or after the 1st

July, 2003 will be 75 dB(A) at 1 meter from the enclosed surface.

DG sets to be selected and installed for the proposed project is required to be fitted with

acoustic enclosure. Noise from DG set will be controlled by providing an acoustic enclosure.

ONGC is likely to install DG sets, designed with acoustic enclosure or acoustic treatment of

room (housing the generator) with a minimum of 25 dB(A) insertion loss or for meeting

ambient noise standards. In addition, DG, having a proper exhaust muffler with a minimum

insertion loss of 25 dB (A) may be installed for fulfilling the requirement. All possible efforts

will be made by ONGC to bring down noise levels outside premises to ambient levels by

installing proper siting and control measures, as required.

Given the fact that, high noise emissions will be generated from the drilling rig, ONGC may

need to design additional engineering controls like noise barriers to attenuate such noise and

reduce it to the extent practicable so that it does not violate standards for ambient noise quality.

Flaring Specifications

Following guidelines are to be followed for planning and design of the Flaring System

according to the MINAS specified for Oil Drilling and Gas Extraction industry (as notified

vide notification dated GSR 176 (E) April 1996):

Cold venting of gases never be resorted to and all gaseous emissions must be flared;

All flaring will be done by elevated flares except where there is no effect on crop

production in adjoining areas due to glaring. In such cases, ground flaring can be adopted;



In case of ground flare, to minimize effects of flaring, the flare pit should be made of RCC,

surrounded by a permanent wall (made of refractory bricks) of minimum 5 m height, to

reduce radiation and glaring effects in adjoining areas;

In case of ground flaring, provisions of green belt being not feasible, enclosed ground

flaring system is likely to be adopted and should be designed with proper enclosure height

to meet the Ground Level Concentrations (GLC) requirement;

In case of elevated flaring, the minimum stack height will be 30m. Height of the stack will

be such that the maximum GLC never exceeds the prescribed standard for ambient air

quality. However, for temporary test flaring during drilling operations, a vertical rise of

at- least 9 m or so as may be required by the Regional Inspector by an order in writing is

to be kept as per provision under Oil Mines Regulations Act, 1984;

Burning of effluents in pits should not be carried out at any stage;

ONGC will use elevated flaring with a stack height of 9m during drilling operations.

Design of Water Pollution Control System

ONGC will take appropriate measures to treat and dispose waste water that is likely to be

generated from the drilling process or sanitary and domestic sources from within the site before

draining it into surface water body. The treating system will be tested for efficiency after

installation and commissioning to ensure that treated water conforms to discharge standards

specified by MINAS for processing waste water and general standards specified by CPCB for

effluent standards for discharge into inland surface water, public sewer etc.

Drilling Wastes & Chemicals

The Central Government has made third amendment to Environment (Protection) Rules, 1986,

vide Notification G.S.R. 546 (E), dated 30th August, 2005, which is known as Environment

(Protection) Third Amendment Rules, 2005. “As drilling wastes in the form of drill cutting and

drilling mud is to be generated from the proposed exploratory operations the following

requirements need to be met for the disposal of these waster as per the provision of EPR 1986.

According to the provisions of this Rule, ONGC has to follow the onshore disposal guidelines

for drill cuttings and drilling mud:

Drill Cuttings (DC) originating from on-shore and separated from Water Base Mud

(WBM) should be properly washed;

Unusable drilling fluids (DF) such as WBM, should be disposed off in a well-designed pit

lined with impervious liner located off-site or on-site. The disposal pit should be provided

additionally with leachate collection system;

Design aspects of the impervious waste disposal pit; capping of disposal pit should be

informed by the oil industry to State Pollution Control Board (SPCB) at the time of

obtaining consent;

If any problem occurs with Water Based Mud (WBM) for drilling, due to geologica l



formation, low toxicity Oil Based Mud (OBM) having aromatic content <1% can be used

only after intimating the Ministry of Environment and Forests and/or State Pollution

Control Board;

The waste pit after being filled completely will be covered with impervious liner, over

which, a thick layer of native soil- with proper top slope is to be provided;

Drilling wastewater including drill cuttings wash water should be collected in the disposal

pit evaporated or treated and should comply with notified standards for on-shore disposal;

The disposal of mud will conform to guidelines specified by the Ministry of Environment

& Forests under Hazardous Wastes (Management, Handling & Transboundary

Movement) Rules, 2008.

The chemicals used (mainly organic constituents) should be biodegradable;

Hazardous Wastes Management

The Hazardous Waste (Management, Handling & Trans boundary Movement) Rules, 2008

requires facilities to classify wastes into categories, manage them as per prescribed guidelines

and obtain prior authorization from the SPCB for handling, treatment, storage and disposal of

Hazardous Wastes. According to the provisions of these Rules, ONGC needs to have prior

authorization i.e. permission for collection, transport, treatment, reception, storage and disposal

of hazardous wastes, to be granted by the competent authority (West Bengal Pollution Control

Board) as per Form 1 of the Rules.

The following kinds of hazardous waste may be generated during site preparation, exploratory

drilling phase and restoration of the project:

Spent oil and lubricants from construction equipment’s and DG sets.

Paint residues during the painting of structures, camps, etc.

Drilling mud and chemicals

The requirement’s under Hazardous Waste (Management, Handling & Trans boundary

Movement) Rules, 2008 has been listed below.

Table 1-3: Regularity Requirements Associated with Hazardous Waste Rules 2008

S.N Requirements Applicability 1 Prior authorization to be obtained for collection,

transport, treatment, reception, storage and

disposal of hazardous wastes by the competent

authority West Bengal Pollution Control Board

(WBPCB) as per Form 1 of the Rules.

ONGC would be using water based drilling mud

which is not hazardous, however drill cuttings (as

specified under Schedule I is hazardous) separated

from drilling fluid will be adequately washed and

temporarily stored and disposed in an impervious pit

lined by HDPE as per WBPCB norms and for final

disposal of the same to the nearest TSDF facility ,

a prior authorization would be taken from

WBPCB.

2 Proper management of wastes (waste and used

oil) by sending them to authorized recyclers or

ONGC will ensure to store hazardous waste in

properly labelled and covered bins located in paved



storing them in secure containers for disposal at

a later stage after treatment to the neighboring

drainage/water bodies

and bunded areas. Hazardous waste, stored, will be

periodically sent to WBPCB registered and/or waste

oil recyclers/ facilities.

3 ONGC will be responsible for proper

management of the hazardous waste by

disposing it to the nearest Treatment, Storage

and Disposal Facility as per the technical

guidelines issued under Chap. V (Treatment ,

Storage and Disposal Facility for Hazardous

Waste) of Hazardous Waste Management Rules,

2008.

At this stage of the project, membership of any

TSDF is

…………. Same will be obtained before

commencement of actual drilling onsite

4 The transport of the hazardous wastes shall be in

accordance with the provisions of these rules and

the rules made by the Central Government under

the Motor Vehicles Act. 1988 and other

guidelines issued from time to time in this

regard.

ONGC will comply to the guidelines mentioned

under Chapter VI -Packaging, Labelling and

Transport of Hazardous Waste of the Hazardous

Waste (Management and Handling) Rules, 2008

during transport of hazardous waste.

Contractor Requirements

The PSC clearly mentions that the drilling operation will be conducted in an environmenta l ly

acceptable and a safe manner consistent with good international industry practice. It requires

that contracts between ONGC and any subcontractor must have provisions, which make it

obligatory for the subcontractor to conform to established measures and methods in relation to

protection of the environment. ONGC will conform to all rules and guidelines as per the

Contract Labour (Regulation and Abolition) Act, 1970. ONGC will incorporate such

specifications and environmental practices/procedures in the tender and contract documents as

and where applicable. Further information in this regard is detailed out in the proposed

Environmental Management Plan.

1.9 Project on Environmental Considerations

1.9.1 Wild Life Protection under Wildlife Act

The Wildlife (Protection) Act, 1972, provides for protection to listed species of flora and fauna

and establishes a network of ecologically important protected areas. As per Article 17A WPA,

Prohibition of picking, uprooting etc., of specified plants. – Save, as otherwise provided in this

Chapter, no person shall –

Willfully pick, uproot, damage, destroy, acquire or collect any specified plant from any

forest land and area specified, by notification, by the Central Government.

Possess, sell, or transfer by way of gift or otherwise, or transport any specified

plant, whether alive or dead, or part or derivative thereof.

As proposed block where drilling operations will be carried out does not involve any Wildlife

Sanctuary or National Park under the Wildlife (Protection) Act, 1972, project does not come

under the purview of this Act. However, as per provisions of this Act, if the fauna categorized

under different schedule (Schedule I to IV) on the basis of their priority, proportion and



population are found in the block, necessary precautions as per Wildlife Protection Act and

Rules, 1972 will be taken.

1.9.2 Ancient Monuments and Archaeological Sites and Remains Act, 1958

According to “The Ancient Monuments and Archaeological Sites and Remains Rules, 1959”

an area of upto 300m near or adjoining protected monuments is prohibited or regulated for the

purpose of mining operation or construction activities. Since, no monuments and

archeological site is present within or near the proposed block, ONGC need not take any

permission from any regulatory body for carrying out drilling operations in this block.

However, necessary precautions will be taken during the movement of trucks and other

vehicles carrying equipment’s and machineries and personnel to the site.

1.9.3 Operation of Motor Vehicles

The Central Motor Vehicles Act (MVA) and Rules, 1989 (MVR) prescribes that vehicles

falling in the category of transport vehicles (buses, trucks, taxis and auto rickshaws) undergo

an annual fitness certification. Vehicle owners also have to obtain Pollution Under Control

Certification (PUCC) from a recognized testing center and has to display it on their vehicles.

Additionally, to address the problem of risks associated with transportation of hazardous

substances by road and consequences of transportation emergencies arising out of these

substances, provisions have been laid down in the MVR.

ONGC during their proposed drilling operations may restrict usage of vehicles that do not have

PUCC or do not comply with emission rating of engines specified under the MVR (for vehicles

carrying hazardous substances like petroleum products) within their premises.



2 PROJECT DESCRIPTION

2.1 OVERVIEW OF THE PROJECT

Raniganj CBM Block was awarded to ONGC-CIL on nomination basis in January 2002 and

the PEL was granted by Govt. of West Bengal w.e.f 09.06.04 (effective date). CIL has a

Participating Interest of 26% and ONGC is the Operator of the Block. The total acreage of 350

sq. km. comprises a northern sector of 240 sq. km. (Sector-A) and a southern sector of 110 sq.

km. (Sector-B). The minimum committed exploration work program as per the Production

Sharing Contract (PSC) has been completed by ONGC as discussed below:

Phase I (Exploration Phase) consisting of seismic surveys, ONGC drilled 7 Core holes to

assess the CBM potential of Barakar coal seams, during pre-CBM Policy era (October 2000-

March 2002). Five to six major, regionally correlatable coal seams were encountered in most

of these Core holes. Marginal to poor CBM prospect of the northern sector (Sector-A) and

addition of new area led to focus the Exploration and Pilot Phase MWP in Sector-B.

Exploration Phase was completed with two extensions of six months each, while three

extensions were sought and granted by GoI during Pilot Phase because LAQ issues in the area.

During Phase I, one exploratory well was drilled. The CTE was obtained for the exploration

phase vide letter no 31-2N-45/2007 (E) dated 13.01.2009 and CTO application was submitted

vide letter no. ONGC/CBM/HSE/BK/8 (7)/ 2007 dated 26.07.2011

Phase II (Pilot Assessment, Market Survey & Commitment Phase) involved drilling of two

nos. pilot. The Phase-I and Phase-I MWP was confined to Sector A.

This was followed by technical assessment of the contract area, market surveys, potential

markets investigation, obtaining market commitments, preparation and approval of

Development Plan.

Presently ONGC intends to undertake development operations under Phase III in accordance

with the approved Development Plan based on exploration, pilot assessment and market

surveys. The Development Plan shall include but not limited to the purchase, storage of

equipment and materials used in developing CBM accumulations, the drilling, completion and

testing of Development Wells, the drilling and completion of Wells for dewatering, the laying

of gathering lines, the installation of separators, tankage, pumps, other producing and injection

facilities required to produce, process and transport CBM into main Gas storage or Gas

processing facilities, including the laying of pipelines within or outside the CBM Block Area,

storage and Delivery Point or Points, the installation of the said storage or Gas processing

facilities required for the development and production of the said CBM accumulations and for

the delivery of the CBM at the Delivery Point and also including incidental operations as

required for the most efficient and economic development and production of the said CBM

accumulations in accordance with modern CBM fields and petroleum industry practices. The

detailed exploration, pilot assessment and development work program for the Raniganj CBM

Block is provided in the below Table 3-1



Table 2-1: Raniganj CBM block – Exploration, Pilot Assessment and Development Work

Program

EXPLORATION PHASE (PHASE I)

Drilling of sufficient core holes and carry out related studies viz. geophysical logging, interpretation

of coal thickness and associated strata; analysis of coal grade, rank, cleat spacing of coal core samples

obtained during core hole drilling; adsorption isotherm of core samples; gas content of coal core

samples by desorption studies in canisters; and injection/ fall off test in the core holes for carrying

out permeability study and reservoir simulation leading to forecasting of CBM and water productions

Drilling, completion, stimulation (hydro fracturing or cavitation etc.), well testing, dewatering (production testing) of the test Wells.

Forecasting of CBM gas production and water based on the results of reservoir simulation, hydrogeological studies and preliminary economic assessment

PILOT ASSESSMENT, MARKET SURVEY & COMMITMENT (PHASE IIA & PHASE IIB)

Drilling of wells, stimulation, dewatering, gas flow rate measurement and ascertaining other production parameters

Performing stimulations, injection and related tests, computer modeling of production profiles

Prepare technical assessment of the contract area.

Carry out market surveys, investigate potential markets and obtain market commitments

Prepare a development plan for approval of the Government through the Steering Committee

DEVELOPMENT & PRODUCTION (PHASE III)

Drilling of development & production wells, installation of surface facilities and laying of interconnecting and transportation pipeline network for commercial production, collection, transportation and sale of CBM gas

The block area has been presented in Figure 3.1 and the coordinates has been provided in

Annexure V.



Figure 2-1: ONGC Block Area Showing Both Sectors A and B



Under Phase III operation ONGC now plans to undertake drilling of development wells,

construction of Gas Collection Stations (GCS) and laying of inter-connecting and

transportation pipeline network for the purpose of CBM gas production, collection and

transportation and sale.

The detailed work program for Phase III has been provided below:

Total no. of wells – 80 nos. vertical, hydraulically fractured development wells. The coal

seams occur at depths shallower than 600m along the northern margin of the block and

below 1350m along the southern periphery. Hence, CIIP has not been estimated for seams

above 600m and below 1350m for this block.

For assessing the area below 1350m and also for CBM specific data generation, five

assessment locations are proposed of which three are in the eastern and two in the south-

western part of the Development area. These locations are expected to further add to

the producing area. The assessment wells in Sector B are planned to be drilled in the 2nd/

3rd year of the Development Phase and if encouraging results are obtained, the production

from these identified assessment areas may be added to the present Development area.

The drilling of wells in these areas and the adjoining areas may be considered in next

Development Phase at a later stage. Neither the cost of these 5 assessment wells, nor the

production, if any, has been included in the present Development Plan.

As the wells are spread over a long tract of inhabited/ industrialized area, four delivery

points are provided for ease of marketing.

A handling capacity of 0.05 to 0.2MMSCMD of gas at the respective mini GCS, and a total

effluent handling of 1200 m3/d have been provisioned to meet the peak production

Interconnecting and transportation pipeline network with a diameter range of 4”-18”

An aggregate peak gas production of ~0.45 MMSCMD and a sustained average

production of >0.4 MMSCMD may be attained over a plateau of six years on raw field

basis. Volume that may be available for marketing after discounting these factors is 0.37

MMSCMD at peak and ~0.33 MMSCMD over a plateau of six years.

CBM sale would be at the fence of ONGC installation(s) either to an end user or to a Gas

Marketer to supply to the end user as per CBM / Natural Gas utilization policy of the GoI.

The coordinates of the CBM Block are given in Table 3.2 and is covered by Survey of India

toposheets no. 73I13, 73I14, 73M1, 73M2 for Sector A and Toposheet no. 73M2, 73M6 for

Sector B. The proposed relinquished areas of Raniganj CBM block has been shown below in

the Table 3.2 – 3.4 below.



Table 2-2: Kabitirtha Coal Block Overlap, Sector-A

PTS LONGITUDE LATITUDE

Deg. Min. Sec. Deg. Min. Sec.

I 87° 04 08" 23° 45 ́ 51"

d 87 6 54.84 23 44 28.97

e 87 6 13.03 23 44 30.74

f 87 5 44.75 23 44 37.09

g 87 5 32.36 23 44 43.02

h 87 5 21.08 23 44 53.69

i 87 5 18.69 23 45 5.65

j 87 4 52.52 23 45 12.62

k 87 3 57.58 23 45 36.7

l 87 3 34.78 23 45 49.45

I 87° 04 ́ 08" 23° 45 ́ 51"

Table 2-3: Relinquishment Area in Northeastern Part

of Sector-A


Deg. Min. Sec. Deg. Min. Sec. J 87° 07 ́ 01" 23° 44 ́ 26"

K 87° 07 ́ 16" 23° 44 ́ 45" L 87° 06 ́ 50" 23° 45 ́ 47"

M 87° 07 ́ 51" 23° 45 ́ 57"

N 87° 14 ́ 13" 23° 44 ́ 18"

O 87° 14 ́ 13" 23° 43 ́ 37" P 87° 13 ́ 03" 23° 43 ́ 47"

Q 87° 13 ́ 11" 23° 43 ́ 15" R 87° 11 ́ 48" 23° 43 ́ 34"

S 87° 11 ́ 32" 23° 43 ́ 12"

J 87° 07 ́ 01" 23° 44 ́ 26"

Table 2-4: Andal-Babuisol Coal Block Overlap, Sector – B

Pts LONGITUDE LATITUDE


G 87 10 00 23 36 06

25a 87 9 38.45 23 36 16.1

25 87 9 38 23 36 12.3

24 87 9 38 23 36 7.5

23 87 9 38.3 23 36 3.5

22 87 9 38.6 23 35 59.3

21 87 9 39 23 35 56.8

20 87 9 39.3 23 35 55

19 87 9 39.3 23 35 53.3

18 87 9 38.5 23 35 50

7 87 9 37.8 23 35 47.1





16 87 9 37.1 23 35 44.6

15 87 9 35.4 23 35 38.9

14 87 9 34.2 23 35 34.8

13 87 9 33.8 23 35 31.7

12 87 9 33.9 23 35 28.4

11 87 9 34.7 23 35 23.2

10 87 9 35.1 23 35 22

09 87 9 35.1 23 35 21.9

08 87 9 35.2 23 35 21.7

07 87 9 36.4 23 35 21.2

06 87 10 1.6 23 35 11

5a 87 10 17.39 23 35 5.81

G 87 10 00 23 36 06

All above areas are agreed by ONGC and approved by OC, to be taken up in next SC for

acceptance and approval of GoI.

Total Area proposed for Relinquishment (km2)

SECTOR-A (Kabitirtha + NE part)

SECTOR-B (Andal-Babuisole)

Total Relinquishment

Area

36.68 (2.68+34) 1.53 38.21

The coordinates of the remaining contract area of Raniganj CBM block has been shown in

Table 3.5 and 3.6 below

Table 2-5: Coordinates for Sector B

Pts LONGITUDE LATITUDE Deg. Min. Sec. Deg Min. Sec

A 87 20 24 23 38 25 B 87 18 15 23 39 04

C 87 16 50 23 38 09

D 87 15 00 23 37 47 E 87 13 34 23 36 18

F 87 10 24 23 34 43 5a 87 10 17.39 23 35 5.81

6 87 10 1.6 23 35 11 7 87 9 36.4 23 35 21.2

8 87 9 35.2 23 35 21.7 9 87 9 35.1 23 35 21.9

10 87 9 35.1 23 35 22 11 87 9 34.7 23 35 23.2

12 87 9 33.9 23 35 28.4

13 87 9 33.8 23 35 31.7 14 87 9 34.2 23 35 34.8

15 87 9 35.4 23 35 38.9 16 87 9 37.1 23 35 44.6



Pts LONGITUDE LATITUDE Deg. Min. Sec. Deg Min. Sec

17 87 9 37.8 23 35 47.1 18 87 9 38.5 23 35 50

19 87 9 39.3 23 35 53.3

20 87 9 39.3 23 35 55 21 87 9 39 23 35 56.8

22 57 9 38.6 23 35 59.3 23 87 9 38.3 23 36 3.5

24 87 9 38 23 36 7.5 25 87 9 38 23 36 12.3

25a 87 9 38.45 23 36 16.1 H 87 09 11 23 36 29

I 87 08 46 23 37 08 J 87 06 44 23 37 58

K 87 07 02 23 36 18 L 87 05 50 23 35 50

M 87 05 12 23 35 17

N 87 04 50 23 35 30 O 87 03 45 23 34 00

P 87 03 20 23 33 20 Q 87 05 00 23 33 53

R 87 07 51 23 33 29 S 87 08 46 23 34 10

T 87 10 00 23 33 03 U 87 11 13 23 33 53

V 87 12 51 23 33 20 W 87 14 17 23 32 13

X 87 16 44 23 35 44 Y 87 18 10 23 36 51

A 87 20 24 23 38 25

Table 2-6: Coordinates for Sector A


Deg. Min. Sec. Deg. Min. Sec. A 86° 49 ́ 34" 23° 42 ́ 42"

B 86° 49 ́ 35" 23° 43 ́ 45" C 86° 55 ́ 11" 23° 45 ́ 48"

D 86° 57 ́ 54" 23° 46 ́ 05" E 86° 59 ́ 12" 23° 46 ́ 00"

F 86° 59 ́ 04" 23° 46 ́ 30" G 87° 00 ́ 34" 23° 46 ́ 33"

H 87° 02 ́ 16" 23° 45 ́ 46"

l 87 3 34.78 23 45 49.45 k 87 3 57.58 23 45 36.7

j 87 4 52.52 23 45 12.62 i 87 5 18.89 23 45 5.65

h 87 5 21.08 23 44 53.69 g 87 5 42.36 23 44 43.02

f 87 5 44.75 23 44 37.09 e 87

6 13.03 23 44 30.74



PTS LONGITUDE LATITUDE Deg. Min. Sec. Deg. Min. Sec.

d 87 6 54.84 23 44 28.97 J 87° 07 ́ 01" 23° 44 ́ 26"

S 87° 11 ́ 32" 23° 43 ́ 12" T 87° 12 ́ 34" 23° 42 ́ 12"

U 87° 14 ́ 33" 23° 40 ́ 59"

V 87° 11 ́ 20" 23° 40 ́ 55" W 87° 08 ́ 15" 23° 40 ́ 13"

X 87° 06 ́ 56" 23° 42 ́ 05" Y 87° 05 ́ 49" 23° 41 ́ 40"

Z 87° 05 ́ 28" 23° 42 ́ 36" A’ 87° 04 ́ 33" 23° 42 ́ 21"

B’ 87° 04 ́ 40" 23° 41 ́ 46" C’ 87° 02 ́ 59" 23° 42 ́ 03"

D’ 87° 02 ́ 39" 23° 43 ́ 04" E’ 86° 58 ́ 52" 23° 43 ́ 39"

F’ 86° 48 ́ 57" 23° 41 ́ 52"

G’ 86° 49 ́ 00" 23° 42 ́ 31" A 86° 49 ́ 34" 23° 42 ́ 42"

Total Remaining Contract Area

SECTOR-A SECTOR-B TOTAL (Km2)

203.32 108.47 311.8

Note: Total Contract area excludes proposed relinquishment area.

The development wells identified within the Phase III proposed area will be drilled in clusters.

Four mini gas collection station (GCS – R1, R2A, R2B and R3) have been proposed. The extent

of the CBM block Phase III area including the location of development wells and surface

facilities has been presented in Figure 3.2



Figure 2-2: Location of Development Wells in Sector B of the Block



2.1.1 Raniganj Coalfield – Mining History and Coal Reserves

The Raniganj CBM block being explored by ONGC falls within the Raniganj coal field in West

Bengal. The total reserve of different qualities and categories of coal in Raniganj coal field

down to a depth of 1200 m from surface is estimated to about 22713.54 million tonnes. The

coal reserves of Raniganj coalfield as obtained from the Geological Survey of India (GSI)

inventory (as on 01.04.2010) have been presented in Table 3.7 below.

Table 2-7: Geological Resource Inventory – Raniganj Coalfield1

Coal Type Depth Reserves (in million tonnes)

Proved Indicated Inferred Total

Medium

Coking

0-300 194.70

1.60

0.00

196.30

300-600 15.30 16.90 0.00 32.20

Total 210 18.50 0 228.50

Semi coking 0-300 45.75 14.19 0.00 59.94

300-600 109.51 113.23 23.48 246.22

600-1200 32.79 305.07 144.75 482.61

Total 188.05 432.49 168.23 788.77

Non-Coking

coal

0-300

9544.54

1865.79

260.99

11671.32

300-600 1682.46 3444.57 2345.87 7472.90

600-1200 13.22 1887.28 1668.82 3569.32

Total 11240.22 7197.64 4275.68 22713.54

TOTAL

RESERVES

23730.81

2.2 ACESSIBILITY TO THE BLOCK

The acquired seismic block is easily accessible through the rail and road network.

Roads: The nearest city is Raniganj, Durgapur and Asansol. Raniganj is located within the

Sector B, however, Durgapur and Asansol city are located at a distance of 7.5km and14km

respectively and are well connected to the national highway NH-2. The Kolkata-Delhi National

Highway (NH2) as well as the Kolkata-Delhi Main/Grand Chord lines of Eastern Railway

traverses through the middle of the coalfield.The surrounding areas are also well linked by a

good network of roads and branch lines of Eastern Railways. The approach roads to the block

are also well developed, which ONGC can use for transportation of machineries, equipment

and manpower.

Railways: Raniganj and Andal are railway stations located within Sector B of the bock on

the Bardhaman-Asansol section. These serve Raniganj and Andal and the surrounding mining-

1 Geological Survey of India - Inventory of Geological Resource of Indian Coal (as on 01.04.2010)



industrial areas. The other nearest railway station is Asansol Railway Junction which is at a

distance of 16km (aerially approx.) north to Sector B and just 5km south of Sector A. Durgapur

railway station is located 10km south of Sector B.

Airport: The nearest airport is Andal airport located which Sector B of the block.

The map showing the accessibility to the block is depicted in Figure 3-3.



Figure 2-3: Block Accessibility Map for CBM Raniganj Block



2.3 LOCATION OF THE BLOCK AND PHYSICAL FEATURES

Raniganj CBM block is situated in Burdwan and Bankura district of West Bengal. The block

is very well connected through rail and road networks with other parts of West Bengal.

The block measures 350 sq. km. of PEL area and is spread in two sectors viz. Sector-A

(240 sq. km.) along the northern margin of the Raniganj Coalfield and Sector-B (110 sq. km.)

in the south central part of the coalfield.

The topography of Raniganj Coalfield is represented by a gently undulating area with a few

linear hills marked by the intrusives. Two prominent elevations namely Panchet (643m) and

Biharinath (451m) are visible in the southern part of the coalfield otherwise covered by the

Younger Gondwana sediments. Three perennial rivers Ajay, Barakar and Damodar along with

their tributaries drain the northern, eastern and southern parts of the block. River Barakar marks

the boundary between Burdwan district in West Bengal and Dhanbad district in Jharkhand.

The general slope of the terrain is towards southeast. The key physical features of Raniganj

block have been described below:

The Kolkata-Delhi National Highway (NH2) as well as the Kolkata-Delhi Main/Grand

Chord lines of Eastern Railway traverses through the middle of the coalfield.

The block comprises of two Sectors: A and B. Sector A and B have road side plantations and

plantations along canal and river are also observed. Sector B have part of two protected

forests within its boundary viz. Ukhra Protected Forest falling in the north eastern part

falling in Burdwan district and Ganjalghati Protected Forest falling in the southern part and

is covered under Bankura district. However, there are no ecologically sensitive areas

located within the block.

Both the sectors are in close proximity to the industrial belt of Durgapur Raniganj

Asansol. This area is very densely populated due to the rapid urbanization in the recent

years. Both the sectors have major portion consisting of the agricultural land.

The most important town located in the central part of the coalfield is Asansol from

which both sectors of the block can be accessed easily. However within Sector A,

Jhamuria industrial area is the major and highly populated town and within Sector B,

Raniganj is the major industrial town.

Apart from ONGC facilities that will be coming up during development phase, various

other industries like cement, thermal power plants, steel etc. are already operating within the

region.

The river Damodar is the major river, passing through the NW-SE part of Sector B of the

block. Apart from this, few other small streams/nallahs also passing through the block

viz. Singaran nala, Tamla nala, Punta khal and Nonia jhor, most of which are non-

perennial and rain fed and remains dry during most part of the year.

The village settlements are scattered within the whole block area. Major land use within

block area is agricultural land



Further with reference to the post and pre-monsoon report on water depth level for 2012,

CGWB, it was assessed that the water depth level ranges between 5-20m, this was also

supported from the primary survey and discussions conducted with village communities of

the block. Hence the main source of drinking water for both sectors is majorly

groundwater. However the urban areas like Raniganj, Jhamuria, Asansol located in the

block have piped water supply from Damodar Valley Corporation (DVC).

Maithon reservoir is located in Dhanbad of Jharkhand state and is located over 6km and

34km north of Sector A and B respectively.

Raniganj and Andal are railway stations located within Sector B of the bock on the

Bardhaman-Asansol section. These serve Raniganj and Andal and the surrounding mining-

industrial areas. The other nearest railway station is Asansol Railway Junction which is at

a distance of 16km (aerially approx.) north to Sector B and just 5km south of Sector A.

Durgapur railway station is located 10km south of Sector B.

Satellite imagery, showing details of site surroundings of up to 10 km distance in all

directions from respective block boundary is shown in Figure 3.4



Figure 2-4: Satellite Imagery for 10km Area around the Block



2.4 SIZE OR MAGNITUDE OF PROPOSED OPERATION INCLUDING

ASSOCIATED FACILITIES

2.4.1 Production Well, GCS and Pipeline - Land Acquisition

Under Phase III program, ONGC is proposing to drill 80 development wells and install four

nos GCS within the Sector B. All the planned wells are of vertical profile. Each well site is

discrete in nature and will be connected by an approach road. Approximately 2acres of land

will be required for each production well facility which may vary depending on the land

availability at each location and on nature of drilling rig deployed excluding approach road.

The wells will be connected to the GCS by pipe lines. Each GCS will house Separator unit,

Effluent treatment unit, Flare ground, Compressor unit, Gas metering station apart from office

for the staff. Approximately 20-25 acres of land would be required for each GCS. Thus

approximately 160 acre of land would be required for 80 development well and 100acre for

GCS facilities in the Sector B of block. This land will be either obtained on lease or

permanently acquired. Presently 10.65 acres of land has been purchased in Sector B for one

exploratory well and two pilot wells. For remaining land required for the project purpose,

identification is in the process. The details of the land procured is given below in Table 3.8

Table 2-8: Details of Land Procured for Exploratory Well and Pilot Wells

S.N Well Name Latitude/Longitude Details of the Land acquired

1

RN#1 (RNAA)

Exploratory

23°37’8.05”N /

87°16’20.58” E

Area acquired: 5.32 acre

Type of acquisition: Permanent

Mouza: Chapabandi & Icchapur

2

RN#2 (RNAC)

Pilot

23° 34’ 26.5” N /

87° 14’ 26.2” E



Mouza: Aarati

3

RN#3 (RNAB)

Pilot

23° 36’ 8.46” N /

87°15’ 11.43” E



Mouza: Gopalmath

On identification, land will be acquired and the compensations will paid at prevailing market

rates. The following procedure is followed for land acquisition in West Bengal by ONGC

through District Administration:

a) Submission of application to the District Administration (DA).

b) Notification by DA and fixing of rates.

c) Indent raised by DA to ONGC.

d) ONGC deposits requisite sum to the DA.

e) DA disburse the money to individual land owners.

f) DA inform ONGC for taking physical possession of land.

g) Physical possession of land handed over by DA to ONGC.



The laying, operation and maintenance of interconnecting pipeline network for transportation

of CBM gas will require the acquisition of Right of User (RoU) of land through gazette

notification as per the provisions of Petroleum & Mineral Pipelines (PMP) Act 1962. Also as

per the provisions of the aforesaid act ONGC will also be paying compensation to the

affected land owner against any damage caused due to removal of trees and standing crops

and temporary severance of land during pipeline laying. ONGC as a general practice after

acquisition of land, immediately will go for plantation in and around the acquired area leaving

the operational area. ONGC s installations and well sites will be surrounded by greenery.

2.4.2 Production Well Site Preparation and Well Pad Construction

Production well site preparation will primarily entail removal and storage of top soil

followed by cutting, grading and leveling works. Further the approach roads to the

new/existing well sites need to be strengthened and permanent roads need to be constructed to

enable access to the proposed production well sites and facilitate transportation of drilling

rigs and heavy vehicular movement. The proposed roads will primarily be built using locally

available material and slag.

Other production well site preparatory activities include the construction of cellar pit of

dimensions 1.5m X 1.5m X 1.5m for installation of well head and construction of 2 nos. HDPE

lined pit of dimensions 10m X 15m X 1.25m at each well site for temporary storage and disposal

of drill cuttings and formation water. The proposed lay out of the production well drill site is

provided in Figure 3.5 below



Figure 2-5: Typical Layout of Development Well Drill Site



2.4.3 Pipeline Laying & Construction

Pipeline network of suitable sizes ranging from 4” to 18” based on the estimated gas flow rates

after drilling, will be laid to interconnect the production wells with GCS. Four mini gas

collection station (GCS – R1, R2A, R2B and R3) have been proposed. The number of wells to

be connected to each GCS is R1-26 wells, R2A-17wells, R2B- 7wells and R3-33wells. From

well site CBM gas will be transported by underground pipeline to the GCS at normal

temperature. The flow rate of gas from production well may vary based on the gas flowing

from the formation. The interconnecting underground piping would be of (Medium Density

Poly Ethylene) MDPE or Carbon steel of suitable size and the pressure in the lines will be

around 1-2.5 bar. From GCS gas will be sold on ‘as is where is basis’, at the custody transfer

point at the GCS fence. Pipeline will be underground and are planned with in RoU of access

roads/high ways with the permission of land owners, local authorities and related government

departments. The laying of CBM gas transportation pipeline will be carried out in accordance

with relevant provisions of OISD Standard 226: Natural Gas Transmission Pipelines & City

Gas Distribution Networks2 and will involve following sequential activities:

Clearing and Grading

A maximum of 2 m wide Right of Use (RoU) area will be cleared off vegetation and other

obstacles such as boulders. Critical areas will be marked on map before commencing the field

activities. The Right of Use area will then be levelled to the required gradient.

Stringing

Pipe transported to the site on trucks will be offloaded using side booms. The pipe then will be

strung adjacent to the trench. Trailers and cranes will be used for the manoeuvring of pipes. No

pipe or other material shall be strung along the RoU before all clearing and grading operations

have been carried out. The pipes shall be strung in such a way that normal use of the

surrounding area is disturbed as little as possible.

Trenching

Manual methods will be used to dig the trench for laying the pipeline. The topsoil will be

removed segregating the remaining backfill material. The topsoil will be replaced in its position

during the backfilling operation. All the pipelines will be installed in a trench of 1.5 m depth

which will be done manually and no any machine will be used for digging the trench

Blasting

Blasting of rock if required will be carried out to a sufficient depth to accommodate the pipe

will constitute trenching in rock. The storage, handling and use of explosives will be complied

with necessary statutory requirements. Blasts will be blanketed as required to prevent damage

to nearby structures, telephone lines, power lines or buried cables. Warning on the blast will

be given to local inhabitants well in advance. Every possible precaution shall be taken to

prevent injuries and damage to persons, property and wildlife. No blasting will be allowed

2 This standard outlines the minimum requirement for safety in design, construction, inspection, testing,

commissioning, operation, maintenance, modifications, abandonment, corrosion protection, safety of

onshore natural gas cross country pipelines including associated facilities and installations.



without prior written approval from regulating authorities and as well, written notice given to

affected land owners, adjacent land owners, property occupants and any other affected parties.

Bending

The pipe will be bent using a bending machine to the appropriate angle to match the vertical

and horizontal alignment of the trench.

Welding

Welding will be done using conventional manual/ Semi-automatic welding involving a crew

of welders and fitters. Once the pipe is strung a line-up crew will position the pipe using side

booms in preparation for welding. Pipe strings to be welded shall be effectively earthed.

Construction crews will always have the approved welding procedure at the site location where

the procedure is being used.

Following the completion of each working day or pipeline section, open pipe ends shall be

effectively closed and shall not be opened until work restarts. The length of the pipe string has

to be limited to ensure integrity and safety due to thermal expansion effects.

Coating

After welding at each weld joint, coating of field joints of bare pipes and the repair of FBE

coating shall be done by site application of High built liquid epoxy coating.

Hydro-testing

All pipelines shall be tested in-place after construction. Cased crossings (rail/road) and river

crossing sections shall be hydrotested before and after installation at least for 4 hours at 1.25

times (for Class 1 & Class 2) or 1.4 times (for Class 3 & Class 4), the design pressure. Water

used for the test medium shall be inhibited water i.e. water to which suitable doses of corrosion

inhibitors and oxygen scavenger are added depending upon quality of the water.

Backfilling

The excavated soil will be returned to the trench. The topsoil, which has been preserved on the

side of the Right of Use, will be spread over the filled up trench. Excavated and blast rock may

be used as backfill above the layer of padding in agriculture, marshy and close to residentia l

areas, up to the level of bedrock. A crown of soil will be kept on top of the trenched portion to

allow for future settlement. Excess or unsuitable material will be cleared from the site and

disposed of at a suitable site.

Restoration

Restoration of the ROU will be conducted progressively following the completion of

construction work. This will involve removal of foreign materials such as construction debris.

The construction crew shall remove wastes, wrappers, packages daily. The terrain will be

returned to its original condition by spreading the topsoil over the ROU and agriculture

activities will be restored to original.



Pipeline Warning Markers

As the construction proceeds in an area, good warning marker posts will be erected indicat ing

the location of the pipeline and the crossing of other pipelines, cables and features. A marker

tape will be placed in the trench above the pipeline to indicate to future excavators that a

pipeline is below and that they are nearing it. Further adequate precautions will be taken as per

the provisions of the OISD-STD-226 during pipeline excavation, water/rail/road/utility

crossings, lowering, hydrostatic testing, commissioning, operation and maintenance.

Constructional details of interconnected pipelines are as per given below:

i. The pipeline are designed and constructed in accordance with (IS:4437 & BIS 14885);

ii. The pipeline are fusion welded as per Indian Standard (IS:4437 & BIS 14885);

iii. The pipelines are buried about 1 meter depth. There is no need for cathodic protection

against corrosion because pipeline material is medium density polyethylene free from

corrosion; and

iv. Pneumatic and hydrostatic tests are carried out at minimum 1.25 times (for Class 1 &

Class 2) or 1.4 times (for Class 3 & Class 4), the design pressure.

2.4.4 Surface Facilities (Production and transportation of CBM Gas)

Well Head

Separation of water and gas

Skid

Flow meters

Gathering System

The gathering system of the Development area has been worked out on a unique local

evacuation system, in view of the disposition and scattered nature of the production areas. As

the wells are spread over a long tract of inhabited/ industrialized area, area, four delivery points

are provided for ease of marketing. An aggregate peak gas production of ~0.45 MMSCMD and

a sustained average production of >0.4 MMSCMD may be attained over a plateau of six years

on raw field basis. At an operating efficiency of 90% and further discounting the production

profile for workover days and internal consumption. Volume that may be available for

marketing after discounting these factors is 0.37 MMSCMD at peak and ~0.33 MMSCMD

over a plateau of six years. Evacuation of gas has been planned from four production hubs viz.

Gas Collection Station (GCS). Therefore, a handling capacity of 0.05 to 0.2 MMSCMD of gas

at the respective mini GCS, and a total effluent handling of 1200 m3/d have been provisioned

to meet the peak production. Four mini gas collection station (GCS – R1, R2A, R2B and R3)

have been proposed. The number of wells to be connected to each GCS is R1-26 wells , R2A-

17wells, R2B- 7wells and R3-33wells.Centralized Effluent Treatment Plant (ETP) has been

planned at R-3 GCS.



The design layout and construction of GCS will be carried out as per the relevant provisions of

OISD-STD-118: Layout for Oil & Gas Installations in a manner similar to the production well

site facility. The gathering system will be comprised of two separate but parallel systems (serie

of pipelines) (Refer Figure 2-7 and Figure 2-8). Gas and water produced from each production

well, as usually, will be separated within the well (gas through annulus and water through

tubing). Water will be collected into the ‘Water Gathering System’ and gas into the ‘Gas

Gathering System’. The two systems will, in the most part, run parallel to each other. The small

quantity of gas coming along with water produced from the wells will be separated in collecting

tanks at the mini GCS and will be flared. If the volume of gas found to be significant the same

will be compressed by LP compressor and will be sent to the main gas line. Gas will be

transported from the wellhead to the GCS by the wellhead pressure to be maintained at 3-4

kg/cm2. In the long run if the pressure drops, wellhead compressors may be used for

transporting gas from wellheads to the GCS. At GCS, the design pressure of the separator will

be 6 kg/cm2 and the separator will normally be operated at 1.5 to 2.0 kg/cm2. The gas will be

sold on ‘as is where is basis’, at the custody transfer point at the GCS fence. Gas will enter the

processing facility via two separators, in which gas will be scrubbed of fluids held in

suspension. The separator will normally be operated at 1.5 to 2.0 kg/cm2. The separator has

been designed to run at 6 kg/cm2. Liquids separated from the gas will flow to effluent storage

tanks. The gas will be sold on as is where basis, at the custody transfer point at the GCS.

Figure 2-6: Schematic Layout of Typical GCS-CBM Gas



Figure 2-7: Schematic Layout of Typical GCS- CBM Effluent

2.5 PROJECT SCHEDULE AND COST

Development of the Block during years 1 & 2 will mainly concentrate on the completion of

assessment of the existing wells and for obtaining ML, statutory clearances and acquisition of

requisite land. Development well drilling is scheduled to start from year 2 along with work for

creation of GCS and associated surface facilities, which will be completed by year 3 to start

regular production. However, small scale gas sale may start from year 2 through EPS mainly

targeting small and marginal customers, in the line of incidental gas sale from the Jharia CBM

Block. The total Development cost has been estimated to be INR 957 Crore with supply of gas

at ONGC fence, the CAPEX component being INR 600 Crore and OPEX of INR 357 crore.

The development activities include drilling of wells and commissioning surface facilit ies

staggered over 4 years. Net cash flow after tax, Royalty and PLP is estimated to be INR

531Crore, at a gas price of US $ 6.0/MMBTU, escalated @ 5% alternate year over a 20-year

span.

2.6 TEHNOLOGY AND PROCESS DESIGN

2.6.1 Drilling methodology

Development of the Raniganj Block has been envisaged presently through vertical hydro-

fractured well in view of their proven track record. Reservoir modeling of the block has been



performed using vertical hydro-fractured wells on 80-acre spacing in view of good

permeability of the seams. However, the possibility of drilling inclined wells after examining

their techno-commercial feasibility is not ruled out to further improve the economics and

mitigate LAQ issues. The main component of Drilling Rigs are: 1) Draw works, 2) Rotary

Table, 3) Tackle system, 4) Mud pumps 5) Engines for draw works 6) Engines for mud pump

7) Shale shaker 8) De-sander 9) De-silter 10) Mud tanks etc.

Rig Type: IR-600 HP mobile type

Capacity: 100 Tons

The design of vertical hydro-fractured wells planned for development of Raniganj Block is

described below.

Drilling

Drilling will be carried out by deploying mobile rig using rotary drilling / Air drilling method.

The overall drilling plan and well architecture are systematically described below:

i. Drilling of 12¼” section above the top most coal seam (~300m)

ii. Setting of surface casing (9 5/8”) accordingly targeted seams. (A weighted average of

1200m TD per well has been considered in the economics).

iii. Setting of 5 ½” production casing up to desired depth, depending upon the target seams

and considering a sump of 100m below the bottom most object seam.

iv. Water based mud to be used. Bentonite suspension will be used while drilling the 12¼”

section. Low solid polymer mud (PHPA) with 2-3% bentonite suspension will be used

as drilling fluid during drilling of the 8½” section.

v. The 5½” production casing is to be cemented in single stage with the use of low weight

cement slurry with sufficient compressive strength.

vi. The average depth of wells will be 1200m.

vii. Diameter of wells : 12¼’’ and 8½’’

viii. Drill cuttings etc.: Sandstone, Silt, Shale (chemically inert, stable), Coal

ix. Drilling Fluids & their Composition

During the course of drilling a vertical well an approximate volume of 127 m3 of water based

low solid polymer mud will be used (for well of 1200m depth).

Table 2-9: List of Chemicals and Quantities to be Used During Drilling

S.N Name of Chemical Consumption(MT) / well

1 Bentonite 12.0

2 Caustic Soda 2.0

3 Soda Ash 0.4

4 PHPA 1.2

Total Tonnage 15.6



The proposed well profile and casing plan for production well drilling during the Phase

III development phase is discussed below and represented in Figure 3.7.

Figure 2-8: Schematic Diagram of CBM Production Well

Drill Cutting

Drilling fluid will be pumped through the drill string down to the drilling bit and returns

between the drill pipe - casing annulus up to surface back into the circulation system after

separation of drill cuttings /solids through solids control equipment. Drilling fluid is essential

to the operation. It performs the following functions:

Control the down-hole pressure;

Lift soil/rock cuttings from the bottom of the well and carry them to a settling pit;

Allow cuttings to drop out in the waste pit so that they are not re-circulated (influenced by

mud thickness, flow rate in the settling pits and shape/size of the pits;



Prevent cuttings from rapidly settling while another length of drill pipe is being added (if

cuttings drop too fast, they can build up on top of the bit and seize it in the hole);

Create a film of small particles on the development well wall to prevent caving and to

ensure that the upward flowing stream of drilling fluid does not erode the adjacent

formation; and

Cool and clean the drill bit;

Drill cuttings of sand, shale, siltstone and coal will be generated, the quantity will be about 50-

55 m3 by volume per well. The earth cuttings generated at drill site will be mostly inorganic in

nature and can be used either for land filling or road making. These solids could be collected

and transported to the identified sites. Drill cuttings generated from drilling will be collected

and separated using a solid control system and temporarily stored on-site in HDPE lined pit of

dimension 10m X 10m X 1.25m. As water based drilling will be employed, the cuttings

generated are likely to be non-hazardous in nature. Depending on usage and site conditions the

drill cuttings pit when filled up shall be covered with an impervious liner, over which, a thick

layer of native soil with proper top slope shall be provided to serve as a secured landfill. All

such disposal practices will be made in conformance with the CPCB and MoEF1 guidelines

with respect to drill cuttings disposal for onshore installations.

Development Well Completion Program

To prepare each well for gas production following drilkling, a well completion program will be

initiated to stimulate the production and transportation of gas to GCS. However, it will be based

on the response obtained from open hole wire line logging operations viz. Natural Gamma

Ray, Bulk Density, Pe Index, Single Arm Caliper, Neutron Porosity, SP, Micro resistivity,

Medium induction resistivity, Deep induction resistivity, and Temperature logs will be

recorded, following which the production casing will be lowered and cemented with 100 m

cement rise inside the intermediate casing. After this, Weight on Cement (WOC), Natural

Gamma ray, CBL-VDL and CCL logs will be recorded. Well completion program which

usually lasts 10-15 days includes perforation of well’s steel casing, fracturing the producing

formation hydraulically and installation of a series of valves and fittings at the well head

(“Christmas Tree”) which are in turn connected to the production tubing and down hole pumps.

Casing Policy of Drill Wells

i. Surface to ~300 m: Hole size 12¼“& 9 _ “Casing

ii. Beyond ~300 m: Hole size 8½ “& 5½“Casing

Perforating well steel casing

After casing and cementation the well bore to formation communication is made by perforating

the casing with help of explosives. The casing and the cement will be perforated at the target

formation to create holes into the production zone. The production testing will be done by

1 Source: MoEF Notification 30th August 2005 – GSR 546 (E)



perforating the target coal seams based on response from logs open hole. The pipe must be

perforated for gas to flow into the well bore. Generally, a cylindrical perforating tool containing

explosive charges will be lowered into the well bore to depths indicated by electronic logging

data. A specialized service company will be deployed for perforating the coal seams in a safe

manner. The well will be then tested by dewatering the coal seams through submersible /PC

pumps, production of CBM gas will be taken through a test separator and reservoir studies will

be performed depending on the response from the well. The well, if qualified, will be converted

in to a production well or else will be abandoned using standard plug & abandon procedure.

2.6.2 Production Tubing & Down hole Pumps Installation

Installation of production tubing and downhole pumps is the final step of the well completion

work. Both the equipment’s will be connected to a series of valves and fittings installed on the

well head. Even though the produced water and gas can flow into the casing after it is

perforated, a small diameter pipe called “tubing” will be placed into the well to serve as a way

for produced water to enter the surface. The tubing is run from the collection of valves and

fittings into the well to a point below the perforated interval. Fluids that enter the well will then

be pumped up the tubing to the surface. As a result production from the wells would be

controlled by opening and closing the valves.

Figure 2-9: Typical Schematic Diagram of CBM Well Site Facility

2.6.3 Hydraulic Fracturing

Hydraulic fracturing is supposed to stimulate production by increasing the permeability of the

formation. In hydraulic fracturing, “frac fluid” (water and non-toxic additives) will be pumped



under extremely high pressure downward through the casing or tubing and bring out through

the perforations in the casing. As a result, the pressurized fluid will enter the productive

formation and fractures it. Hydraulic fracturing will be achieved by injecting sand proppant

with water and gel to “prop open” the fractures in the coal seams. When the pressure will be

released at the surface, the fracturing fluid will return into the well and the fractures partially

close on the proppants, leaving channels for gas and water to flow through into the well. The

“frac fluid” pumped into the casing will be recovered, recycled or disposed off with the

produced water. Hydraulic fracturing will be limited to daylight hours to facilitate the activity

and to ensure the safety of employees.

2.6.4 Development Well Testing Program

Hydraulic fracturing of coal seams will be followed by well testing program that involves

dewatering of the coal seams saturated with water to achieve optimal gas production and is

considered to be an important operation essential to the success of the wells. Dewatering the

coal seam reduces the formation pressure and allows gas to be desorbed from the coal matrix

causing it to flow to the well bore. Effective dewatering may take anywhere from 6-12 months

and is achieved by using a Progressive Cavity (PC) Pump/electrical submersible pumps. During

the initial de-watering phase gas production increases steadily while the amount of water

decreases. Eventually, production levels begin to resemble a conventional gas well and the gas

reserve gradually declines until it is no longer economically viable. The generalized CBM

production profile and well is provided in Figure 3.9 and Figure 3.10

Figure 2-10: Generalized CBM Production Profile



Figure 2-11: Generalized CBM Production Well4

Surface production facilities installed at the well site will include a collection of valves, gas

and water separation system, gas metering facilities etc. The gas produced along with the

formation water will be channelized through a pipeline to a strainer for removal of coal fines.

The CBM gas is then separated from the produced water by a two phase separator located at

the surface of each well site to yield gas and produced water. Following separation the gas is

metered and routed through gas gathering pipelines for transport to GCS. Separated produced

water will be channelized to onsite pits for temporary storage. The produced water so stored

will be adequately treated prior to its disposal to any natural drainage channels or usage for

agriculture purpose. Gas flaring facility of height 9m is provided at each well location and is

restricted primarily to short-term testing, well work overs or exceedingly rare emergency

situations viz. system failures till the wells are not connected with the GCS network. All flaring

activities will be carried out in accordance with the CPCB specified flaring guidelines5 for

onshore oil and gas extraction industry. In case of process upsets, Emergency Shut down (ESD)

valves at the inlet & outlet battery limits will be closed remotely from the control room. These

valves shall also have provision for manual closing, as standby system. The dewatering pumps

installed at well site have the provision to switch off by SCADA telemetry system from control

room.

4 Geological Overview of Coal Bed Methane – U.S. Geological Survey (USGS) 5 EPA Notification [GSR 176(E), April, 1996]



2.6.5 Provisions for Handling Coal Fines and Sands:

Coal fines and sands collected at surface will be insignificant in volume. Sands may be reused

for seam isolation / sand dumping and coal fines may be dumped in small pitches at well site.

The following provisions have been made for handling coal fines and sand ingress:

A sump of 100m below the deepest perforation provides accommodation for coals and

sands that ingress during production.

Work-over jobs will be conducted at regular intervals to clear the sump of debris.

Use of PC Pumps will provide steady flow.

2.6.6 CBM Produced Water

Water production and disposal will be an important issue in CBM development. CBM

produced water will be generated when the water that permeates the coal bed is removed by

dewatering, in order to reduce the hydrostatic head or reservoir pressure in the coal seams. De-

pressuring the coal seam can generate large volumes of water of varying quality; as the amount

of water in the coal decreases, the amount of CBM production increases. Each production well

is expected to produce about 10-12 m3/day of produced water throughout the life of the well.

Production of water during the life of the well varies considerably, the rate reduces with time.

Hence, taking into account the huge volume of water generated and its potential impacts it is

necessary to characterize the water itself to determine its suitability for usage or disposal. The

quality of CBM produced water will vary with the original depositional environment, depth of

burial, coal type (Jackson & Myers 2002) and it also varies significantly across the production

areas. Generally, dissolved ions in water co-produced with CBM contain mainly sodium,

bicarbonate and chloride. The composition of the water will be controlled in great part by the

association of formation waters with a gas phase containing varying amounts of carbon dioxide

and methane. The bicarbonate component in the produced water may potentially limit the

amount of calcium and magnesium through the precipitation of carbonate minerals. CBM

waters are relatively low in sulfate because the chemical condition in the coal bed favors the

conversion of sulfate to sulfide. Trace element concentration in CBM water is commonly low

and in general most CBM water is of better quality than water produced from conventional oil

and gas wells6

Disposal of CBM Produced Water

CBM related studies7 in the United States reveal that less than 5 percent of all CBM produced

water is directly or intentionally used for beneficial use viz. irrigation of agricultural lands.

It is proposed that the produced water will be utilized for simulation job/ drilling operation or

allowed to evaporate naturally from the evaporation pit. The available water analysis data show

6 Source: “US Geological Survey – Water Produced with Coal Bed Methane” - http://pubs.usgs.gov/fs/fs-

0156- 00/ 7 Management and Effects of Coalbed Methane Produced Water in the United States 2010 - Committee

on Management and Effects of Coalbed Methane Development and Produced Water in the Western United

States; Committee on Earth Resources; National Research Council

http://pubs.usgs.gov/fs/fs-0156-

http://pubs.usgs.gov/fs/fs-0156-



the water to be fit for agriculture/ livestock with limited treatment. It is expected that over a

period of time, and from different locations within the block, chemical composition of the water

is likely to alter. Some values may increase whilst others may decrease.

With the exception of livestock watering, essentially all other beneficial uses of this water are

ancillary or consequential to disposal through discharge—e.g., wildlife and aquatic habitat

enhancement, aquifer recharge, pisciculture and wildlife watering. Nearly 85 percent of all

CBM produced water in the US CBM blocks is disposed of either by storage in constructed

impoundments or direct, permitted discharge to ephemeral drainages and perennial streams.

This approach to produced water management is therefore driven by large volumes and

relatively low salinities of produced water and the regulatory requirement and environmenta l

suitability of discharge or storage. The water management alternatives to be adopted by ONGC

following the generation of produced water during the development and production assessment

phase of CBM exploration are discussed below:

Discharge to Surface Water

The produced water separated from the CBM gas and stored in pits will undergo further

treatment prior to its discharge into nearby surface water body or natural drainage channels

thereby conforming to the CPCB surface water discharge standards. This is because discharge

of untreated produced water in large volumes has the potential to cause downstream surface

water pollution and minor alteration of surface water flow rates which will be governed by the

existing character of the stream and quality of the CBM water. However there exist certain

important factors connected to discharge volume and erosion should be considered when

planning discharges as outlined below.

Stream Bank Erosion - Increased flow volumes could lead to erosion and deposition along

the stream valley. Discharge of CBM water can be coordinated with seasonal flow rates

to minimize or eliminate increases in stream bank erosion.

Water Crossings: During episodes of increased flow culverts could be destroyed or

weakened enough to make them unusable. The resulting disruption could be significant to

local agriculture. Discharge of CBM water can be engineered and timed to significantly

reduce threats to water crossings.

Riparian Plants and Wildlife: Riparian erosion could destroy streamside vegetation

including important pasture land and animal food sources. Managing CBM water

discharges will avoid significant amounts of erosion and damage to riparian vegetation.

Beneficial uses for Agriculture

ONGC may also plan to put the CBM produced water into beneficial use viz. irrigat ion

purposes depending upon the water quality, soil type, crop type and the irrigation method

practiced. Generally irrigation using CBM discharge waters has been implemented with

various types of sprinkle irrigation techniques viz. center pivots, lateral roll systems, high

pressure, large flow rain bird-style sprinklers (big guns.) employed worldwide. However the

appropriateness of irrigation with the CBM produced water will depend on the site specific



conditions (water quality, soils, vegetation, etc.) and the proposed management practices

(application rates, soil amendments, treatment etc.). The CBM produced water is characterized

by high TDS (in the order of 2000 mg/l) and sodium levels; presence of trace metals elements

like boron, manganese and iron also determines the suitability of the water for irrigation. Such

high TDS and sodium values of these waters have a potential deleterious effect on permeability

of certain soil types rendering it more prone to erosion thereby decreasing crop yield. Hence

based on the quality of water it is required that it is subjected to adequate treatment prior to

irrigational use. However potential constraints identified in putting the CBM produced water

for irrigational use based on relevant studies8 have been discussed in the Box 3.1 below.

Box 3-1: Potential Constraints of Agricultural Use of CBM Produced Water

The benefit of utilizing CBM water for irrigation has been particularly realized in arid regions. However, various constraints exist within many CBM projects that may affect the potential for agricultural use of CBM produced water. These issues require careful scrutiny during the early stages of a CBM project timeline and include the following:

Permitting – Necessary permission is required to be obtained in discussion with irrigation department and relevant govt. agencies prior to use of produced water for irrigation.

Landowner - Most CBM governing bodies stress the importance of cooperation between the CBM operator and surface rights landowner. The two parties must be able to explore suitable ways to handle CBM produced water in a mutually beneficial way. Also, if the agreed water management option has the possibility of affecting adjacent lands (i.e. discharge waters moving across ownership boundaries by means of surface flow or subsurface flow) these other parties must be in agreement to the proposed option, or steps must be taken to manage water without crossing property boundaries.

Environmental - CBM produced water chemistry and soil texture and mineralogy of the irrigable area play a major role in determination of a successful water management option. Protection of the environment should be paramount when considering CBM water management options.

Agricultural - Salt tolerance and growth stage of individual plant species within the irrigable area.

Meteorological - Drought versus wet weather conditions will play a considerable role in the ultimate ability of an irrigable area to provide acceptable soil and water chemistries by adequately infiltrating or diluting CBM produced water.

Topographic - The topographic setting of an area will have a major role in determining the suitability of an irrigation option.

Geologic - Unstable geologic conditions (slide areas, sinks, etc.) may eliminate some water management irrigation options.

In addition to the above there are other variables which also need to be considered prior to use

of produced water for irrigation purposes. This will include:

topography and access restrictions

use of existing utilities or an internal combustion generator for power

proximity to existing utilities

shape and size of the irrigable area

8 Handbook on Coal Bed Methane Produced Water – Management & Beneficial Use Alternative, July 2003,

ALL Consulting Tulsa, Okhlahoma



required flow rate for a system

soil properties compatibility with system design

the amount of time and labor available to operate the system

distance from the CBM water source

Industrial Use (Coal mine Use)

Other water management options available to ONGC include the supply of water to various

local industries for use in operational activities. With Raniganj coal mine area being

characterized by some major open cast coal mines in the vicinity of the proposed project, the

produced water can be used in the operational coal mines for dust suppression, slurry activit ies

and post mining restoration efforts. However the following potential constraints need to be

understood before putting such water for industrial use:

Water Quality - Although the majority of the water used in association with coal mining

activities is used for dust suppression, water quality is still a concern. Water that is applied

for dust suppression can cause environmental impacts which may make subsequent

reclamation of the mine area more difficult in the future. Poor quality water can impact the

soils resulting in increased erosion and salt accumulation which would increase the work

necessary in future reclamation activities.

Timing - This timing issue may be critical in determining how much CBM water is used

for coal mining operations, causing coal mines to store significant volumes of water

produced during the early stages of CBM development for later use.

Transportation - The transportation of the produced water could also constrain the amount

of produced water to be used by coal mines. Depending upon the location of the operating

mines from production wells the methods of transporting the produced water may become

more expensive. Transportation will be a bigger factor in areas where other supplies of

water are readily available for the mines to use; however, in water scarce areas the limits

associated with transporting water greater distances should be reduced.

Underground Injection

One of the management options for produced water is to inject it underground in accordance

with regulatory requirements. Injection wells are currently used in conventional oil and gas and

CBM fields across the world as a necessary and critical water management tool. Injection is

dependent upon several variables, including, but not limited to the availability of a receiving

formation; the quality of water being injected; the quality of water in the receiving formation;

and the ultimate storage capacity of the receiving formation. These factors will influence what

type of injection well can be used as a tool for managing water produced in association with

CBM.

In most CBM producing areas, there may be several options relative to the use of injection as

a water management practice. Potential injection zones may be present above producing coals,

between producing coals, below the producing coals, or even the producing coals themselves.



In some cases, injection wells are being drilled and completed into zones several thousands of

feet below the deepest coal seam or they may be completed into very shallow permeable

formations. Keeping in view of the above discussion water management options relative to

injection, for the purpose of managing CBM produced water, can essentially be grouped into

two general categories. These include injection into a coal seam aquifer or injection into a non-

coal seam aquifer. However there are constraints associated with such injection which need to

be considered prior to selection of this alternative as a management measure. This includes

injection into a coal seam aquifer or injection into a non-coal seam aquifer. However there are

constraints associated with such injection which need to be considered prior to selection of this

alternative as a management measure. This includes

Potential Impacts to CBM Production - CBM operators will be especially careful to avoid

any management practices that will economically impact their project, especially practices

that will impact production. Injection into zones that are either geographically or

stratigraphically close to producing coal seams will need to be monitored for any pressure

communication with the producing coals.

Post-Production Compaction – Once productive coal seams may be used as injection zones

for produced water. The process of CBM production, however, may have caused

irreversible compaction of the coal seam, making injection difficult or impossible.

Waste of Resources - Injection in close proximity to a productive coal seam may, despite

close scrutiny by the operator, result in a loss of CBM resource. The loss would be a waste

of valuable resources and may have repercussions beyond the loss of an injection zone.

The feasible option for disposal of CBM produced water so generated will be determined based

on produced water volume, analytical results of produced water, presence of any identified

environmental sensitivities, availability of irrigation facilities, treatment techniques, regulatory

requirements and overall cost. A comparative analysis of common CBM produced water

treatment technologies/techniques to meet the required beneficial use or disposal alternative

has been presented in the Table 3.10 below



Table 2-10: Comparative Analysis-Common CBM Produced Water Treatment Methods

Treatment

Method Principle Advantages Disadvantages Limitations Relative Cost

Ion

exchang

e

Selective removal and

replacement of sodium using

cation exchange resin; ancillary

treatment is bicarbonate - TDS

reduction; can be combined with

secondary treatments

for fluoride, barium, ammonia,

SAR reduction

Very efficient specifically for

sodium (SAR) reduction;

extensive history; low energy

requirement; capable of

processing large volumes of

water; proven technology; all

weather operational; long

operating life; operation time of

99% in service; waste stream can

be eliminated with marketable

dried product or reduced to 5

percent of input volume; certain

systems are portable and mobile

Requires large volumes of

water to be cost effective;

elimination of concentrated

brine waste stream may be

required; turnkey operation

involving hazardous material;

requires routine, regular

maintenance; resin needs

periodic

replacement

; constituent removal is

specific to resin; treatment

process specifically targets

sodium; can be combined in

series for removal or

reduction of other

constituents

Significant

infrastructure; involves

hazardous material

handling

High initial capital

investment cost; relatively

low per-unit treatment cost

once in operation

Reverse

osmosis

Pressurized filtration

Through fine-pore

membrane

Highly effective, can remove

most contaminants; can minimize

waste stream for disposal; proven

technique and technology

Requires frequent

maintenance; produces

concentrated brine waste

stream; treated water quality

may exceed needs;

substantial energy

requirement; may require

membrane replacement;

turnkey operation; requires

large volumes to be cost

effective

May require

pretreatment;

temperature sensitive—

operates in 50 to 95F

range; significant

infrastructure, relatively

immobile

High initial

Capital investment cost;

high per-unit

treatment cost; waste

stream disposal cost



Freeze-

Thaw

Evaporation

Distillation by freezing and

evaporation

No energy input required at

treatment facility;

environmentally benign process;

no hazardous waste material

handling; relatively inexpensive

per-unit treatment cost

No mobility of treatment

facility; often requires

hauling water long

distances; requires large,

dedicated land area; only

effective in subfreezing

environments, for limited

time periods; requires full-

time onsite management

when in operation

Wastewater storage

ponds

and basins may be

hazardous to avifauna;

may require canopy

screening; requires

access to disposal

facility for concentrate;

unpredictable

process timing

High initial capital cost for

land acquisition and basin

construction; relatively

high per-unit treatment

cost

Zeolites Selective removal and/or

replacement of sodium using

cation exchange alumino-

silicates (naturally occurring

mineral

deposits)

Utilizes naturally occurring

mineral adsorbent; no hazardous

waste material handling; minimal

capital investment; concept well

known

Zeolites require initial

conditioning

to remove sodium; flushing

and periodic replacement

required; produces waste

stream; multiple engineered

water treatment steps

involved; requires large

operational footprint and

extensive water storage and

handling

No evidence of large-

scale commercial use;

primarily used on

experimental or trial

basis; questionable

effectiveness with

saline-brackish waters;

efficiency of sodium

removal limited by

specificity of zeolite

Minimal capital and

equipment costs; low per

unit

Treatment cost (if zeolites

are ever applied at larger

scale, they may incur high

initial capital costs, similar

to ion exchange)

Artificial

Ponds/Wetlands

Consumptive water use and

selective removal of elements by

plants

Utilizes natural and constructed

wetlands as water treatment

mechanism; no energy input

required; no hazardous waste

material handling; no waste

stream; environmentally benign;

enhanced wild life habitat

Limited or no effectiveness

for salt or sodium removal;

potential evapo-

concentration of salts;

consumes water; requires

large operational footprint;

has potential to enhance

invasive plant species and

ecological community

change;

No net long term

beneficial water

treatment in context of

CBM produced water

treatment;

functional benefits may

be temporally limited

Ranges from none to

extensive if wetlands or

plant community

construction

required; only per-unit

treatment cost is water

delivery



As highlighted in Table 3.10 the practical constraints on the flexibility to use these

technologies to achieve a desired water quality for a specific purpose is governed by mitiga t ion

factors such as costs, uncertainty about quantities and duration of water supply, water transport

and storage, and the legal framework for application of produced water to beneficial uses. In

nearly 100 percent of the cases where CBM produced water is being treated, the degree of

treatment of CBM produced water are driven by regulatory requirements for disposal,

permitted discharge, or waste management. In few instances is CBM produced water being

treated for the primary or specified purpose of achieving quality for beneficial use. The

predominant treatment (90 to 95 percent) is ion exchange for reduction of sodium and

bicarbonate concentrations. The next predominant water management strategy is disposal by

deep-well reinjection particularly practiced in CBM basins in US.

The single most significant cost associated with treatment for discharge is disposal of waste

brine. The second most significant cost associated with treatment for discharge is transportation

associated with brine hauling and disposal. Even where CBM produced water is intentiona lly

put to beneficial use, the cost of implementation of such use (e.g., the cost of transportation,

pipelines, irrigation systems, fisheries and management per unit area of land irrigated plus the

cost of crop management, harvesting, storage, and transportation versus the value of the

commodity produced) in a limited local market may exceed any realized economic gain.

2.6.7 Site Closure and Decommissioning

Site closure and decommissioning will be initiated at the end of the project life cycle. The

abandonment process would primarily consist of the following steps:

Surface equipment and facilities will be disassembled and removed.

Full well bore will be plugged and sealed with cement, or plugs will be inserted

strategically within the casing.

Gravel surfaces at the well pad will be removed.

Disturbed areas will be backfilled and graded to the desired configuration.

Erosion control features to stabilize the surface will be installed as necessary.

A project post closure plan considering the removal of surface equipment and facilities, well

abandonment, site decommissioning and reinstatement has been prepared and provided in

section 7.1.7. The plan will be further developed and made comprehensive during field

operations and will include details on the provisions for the implementation of

decommissioning activities and arrangements for post decommissioning monitoring and

aftercare. All procedures as per OMR shall be followed while abandoning a CBM well.

However, it may be mentioned that normal life of a CBM wells may extend up to a period of

25-30 years.



2.7 POLLUTION SOURCES, CHARACTERIZATION AND

MITIGATION PLANNED

2.7.1 Noise Generation

The major noise generating operations from the proposed activities during development and

production well drilling are operation of rotary drilling equipment as part of rig, diesel engines

for power generation and operation of PC downhole pumps. Production well drilling for the

proposed project is a continuous operation. However noise generated during development well

drilling is of intermittent nature (considering drilling period of 15 days) and of relatively lower

levels as the drilling rig used is of lower capacity compared to conventional oil and gas drilling

rigs. Activities involved during construction and drilling phase is also not likely to cause any

significant noise impact considering the phase wise movement of fewer vehicles (2 -3 vehicles

during construction phase, 5 trailers during drilling phase and 3-4 specialized vehicles during

perforation and hydro fracturing) and also considering the limited use of heavy construction

machineries by the project. Noise will be generated due to the operation of DG and gas

generator sets at drilling site but the same will be limited to 75dB(A) at the periphery of the

drilling location through installation of acoustic enclosures around DG and gas generator sets

and other noisy equipment’s. However, the project proponent will adopt adequate measures

viz. provision of acoustic enclosures vibration isolators, PPEs to workers etc. to mitigate the

likely impacts of noise generated from the operation of DG sets and drilling rig considering the

presence of any noise sensitive locations in and around the well sites.

2.7.2 Air Emissions

Air emissions from point sources expected from the proposed drilling activities will be mainly

from combustion of diesel in the diesel generators. DG Sets of 350 KVA capacity will be used

for drilling purposes. During Work Over 33 KV Gen set would be used while during testing

power requirement will be met out from 100 KVA DG set. The principal pollutants will

comprise of Particulate Matter, Sulphur and Nitrogen dioxides, Carbon Monoxide and other

hydrocarbons. ONGC will ensure in the planning stage that the emissions meet the standard

criteria set by the regulations in terms of minimum stack height and emission concentrations.

DG sets to be used during development phase (Phase III) should conform to the norms notified

under the Environment (Protection) Act, 1986.

Additionally, occasional gas flaring would be carried out following all statutory norms viz

OMR 1984, OISD guidelines. It should be mentioned that complete combustion of the flared

gas is ensured. In this regard, ONGC will comply with the guidelines for flaring laid down by

the CPCB for Oil Drilling and Gas Extraction industry as notified vide notification dated GSR

176 (E) April 1996.

Fugitive emissions are likely to be generated from vehicular movements, material handling &

transportation and exhaust emissions during the project construction and drilling phase.

However air quality impacts from such fugitive emissions are not considered to be significant

due to the temporary nature of the construction and drilling activity and taking into account the



adequate mitigation measures likely to be adopted by ONGC.

2.7.3 Produced Water

It is anticipated that about 10-12 m3/day/well of CBM produced water will be generated during

dewatering operation. Some wastewater may also be produced as formation water and from rig

floor washing activities. The produced water will be utilized for simulation job/ drilling

operation or allowed to evaporate naturally from the evaporation pit. The available water

analysis data show the water to be fit for agriculture/ livestock with limited treatment.

All wastewater particularly CBM produced water so generated will be temporarily stored in an

onsite pit (10m X 10m X 1.25m) constructed at each well site prior to its beneficial use for

agriculture, domestic purposes, preparation of water based and/or surface water discharge. Ion

exchange treatment2 is widely used in removing TDS, NaCl, heavy metals and trace organics

in produced water and is readily available both as packaged or engineered systems. Ion

exchange materials may be natural (certain clays) or synthetic (zeolites, which are crystalline

alumino-silicates or clays, and organic resins). However, any beneficial use of treated produced

water will be regulated by CPCB water quality criteria for land disposal and BIS irrigat ion

water standards. Again, all discharges, if required will be made in accordance with applicable

legislative requirements and discharge standards specified by CPCB and West Bengal Pollution

Control Board.

2.7.4 Hydrotest Water

Gas gathering/transportation pipeline network interconnecting well site and GCS need to be

subjected to hydro testing before being put into service to verify their integrity and to ensure

their ability to withstand maximum operating pressure. As hydro test water may involve

possible usage of chemicals such as corrosion inhibitors the disposal of such water could

possibly lead to the contamination of receiving water bodies or drainage channels. Necessary

considerations for disposal for hydro test water will be made depending upon local

environmental sensitivity viz. agricultural lands, community water bodies etc. MoEF and

CPCB. Solids control and filtration techniques will be utilized in the preliminary treatment of

such hydrotest water. Toxicity level in hydrotest will be reduced through changes in pH level

to inhibit bacterial growth and by the use of low toxicity biocides.

2.7.5 Domestic Waste

Domestic waste water (approx. 5.2 KLD) generated from onsite sanitation facilities the same

will be treated using a combination of septic tanks and soak pits to be provided at each

development well site.

2.7.6 Solid and Hazardous Waste Streams

The drilling process will generate solid and hazardous waste streams which are listed below:

2 Produced Water Beneficial Reuse – High TDS Waters” – Petroleum Technology Alliance Canada (PTAC)



Hydrocarbon Wastes: Waste oils from leakage from equipment or diesel storage tanks, used

oil (from engine oil changes) is designated as hazardous;

Non-hazardous solid waste: Non-hazardous wastes like paper, wood, plastics, containers

(plastic or metallic used for substances other than chemicals) etc.,

Off specified hazardous wastes: Off specified hazardous wastes are Containers (includ ing

poly bags) holding hazardous ingredients like fluid, or testing chemicals, or previously holding

volumes of hazardous chemicals or used batteries, disposed air filters etc.; and

Biodegradable waste: The drill site will generate food rejects constituting biodegradable

wastes.

Hazardous waste streams viz. used/waste oil will be disposed through WBPCB registered

hazardous waste recyclers. All recyclable solid waste viz. paper, plastic, bottles etc. will be

segregated at source and recycled through local waste recyclers registered with munic ipa l

authorities. Food waste will be stored in properly labeled containers and disposed to

nearby municipal dumping grounds.

2.7.7 Drill Cuttings

Drill cuttings of sand, shale, siltstone and coal will be generated, the quantity will be about 50-

55 m3 by volume per well. The earth cuttings generated at drill site will be mostly inorganic in

nature and can be used either for land filling or road making. These solids could be collected

and transported to the identified sites.

Considering the use non-hazardous chemicals (corrosion inhibitors etc.), in water based mud

drilling of production well, the cuttings generated are likely to be non-hazardous in nature. The

drill cuttings will be separated in the drilling rig solids control system and then dried to emerge

in a disposable state. These cuttings will be disposed onsite in an impervious pit (10m X 10m

X 1.25m) provided with HDPE liners in conformance to the CPCB guidelines on “onshore oil

drilling and gas extraction industry3

2.7.8 Drilling & Other Hazards

Fire/ explosion risks due to leakage of high pressure gas from flange joints or due to pin hole

rupture in vessel and pipeline. However, taking into account the low density of CBM gas any

formation of flammable vapour cloud leading to explosion is unlikely. Further in CBM

operations, methane gas is mostly adsorbed onto the matrix of the coal molecule itself, and it

is held in place there by the hydrostatic pressure exerts on the water column. CBM wells will

generally not flow on their own, and the gas is not desorbed from the coal molecule until a

critical desorption pressure is reached on de-watering of the well (i.e. reduction of the

hydrostatic pressure). Thus, CBM wells usually do not have well control problems, however

with continued infill drilling as in a field development there is a possibility of gas migrat ion

from another well nearby. To cover this production, drilling will take place with at least an

annular Blowout Preventer (BOP) of 5000 psi capacity installed at the wellhead so that the well

can be closed in to secure it in the event of gas break out. Well kill procedure in CBM wells

3 EPA Notification [GSR 176(E), April, 1996]



consists of simply filling the well with water since this is sufficient to hold back the gas.

However, all the rigs used for drilling will be equipped with BOPs and wellhead facilities to

control unexpected well kick situations. In view of the above blow out risks are therefore likely

to be minimum and not considered to be of significance with respect to the proposed

development project.

Additionally, ONGC also plans to both mitigate and address any possible gas leak situation

through provision of SCADA system and by isolating damaged pipeline section and

extinguishing any secondary fires. The assessment carried out as part of this EIA will also

contribute towards identification of hazards, and formulating management plans for flammab le

gas under emergency situations. The following scenarios have been considered for risk

assessment study for the proposed project and have been discussed in detail in Chapter 6 of

this document.

Accidental release of methane gas from pipeline leakage/rupture during the routing of CBM from production well site to the GCS.

Accidental release of compressed flammable methane gas from cascade cylinder transportation

Non process fires/explosion viz. fire at diesel storage tanks, electrical installations, machineries etc.

2.8 INSTRUMENTATION CONTROL SYSTEM

The instrumentation control system at the well site shall cover level and pressure control system

for the separators, flow measurement system for both gas and water. The SCADA system shall

be installed for monitoring of wells from GCS control room. GCS will cover level and pressure

control system for vessels with fire and gas detectors to be provided at all critical locations as

per standards. All compressors will have its own logic based monitoring and control system

for pressure, temperature, over speed, vibrations, capacity etc. All the GCS will be hooked up

to SCADA system.

2.9 HSE POLICY

ONGC is committed to maintain highest standards of occupational health, safety and

environmental protection with effective risk management. The Corporate HSE policy of ONGC

is presented below:



Figure 2-12 ONGC HSE Policy

2.10 UTILITIES AND RESOURCE REQUIREMENTS

Utilities considered for the proposed drilling operation include requirement of skilled as well

as unskilled workers, place for accommodation for outside workers, availability of roads for

movement of personnel and machineries, power, fuel and water requirement for drilling and

associated activities- place for waste dumping and other infrastructure facilities. Details of

these aspects are presented in this section:

2.10.1 Manpower Requirement and Accommodation

During construction phase, it is anticipated that approx. 150 nos. contractual workers both

unskilled and semiskilled will be deployed for site preparation and laying of gas pipelines.

During development well drilling and coal seam perforation & hydro-fracturing it is estimated

that 10 nos. and 20 nos. workers will be deployed onsite respectively on 12-hour shift basis.

Further approx 175 nos. security personnel will be deployed along with supported by 240 nos.

office and logistic personnel.

2.10.2 Water Requirement

Approximately 800 m3 of water per well (approximately 1200m depth) will be used for drilling



of a well. The source of water is to brought by tanker from nearby testing well/ or borewell at

site. It is estimated that average 3-5 m3 of water is consumed per day for operational purpose.

The source of water is same as for drilling. The domestic water requirement would be 6.8KLD

source of water (taking water demand norms for Industries as 45LPCD of CPHEEO)

During stimulation of each object around 300 m3 of water is pumped into the well. Water

tankers are hired for transporting water from nearby testing wells/ In case of transporting of

water are not feasible then from other sources. However, during prolonged testing phase, well

produces water and produces water is consumed in drilling well / or simulation job. Water will

be sourced from approved local suppliers. The water balance diagram is provided in Figure

3.12

Figure 2-13: Water Balance Diagram

2.10.3 Fuel (MT) and energy (MW) consumption

a. Drilling

Fuel: 36 KL per month during drilling

Energy consumption: Approximately 50 MWH per month

b. Work Over

Fuel: Around 3 KL per month

Energy consumption: 430 HP Rig engine + 33 KV Gen set

c. Stimulation

3 Pumpers of 2250 HP each

Fuel consumption: Average 3 KL per Job

d. Testing:



Fuel: Around 5 KL per month

Energy consumption: 100 KVA DG sets

2.10.4 Resource and Chemical Usage

Various chemicals will be used during the drilling phase, mainly for preparation of drilling

mud. At the planning stage, an estimate of potential usage for every chemical will be made and

documented in chemical usage tracking sheet. During the operational phase, chemical usage

will be monitored and efforts will be made to reduce or conserve its usage to the extent

technically feasible. During the course of drilling a vertical well an approximate volume of 127

m3 of water based low solid polymer mud will be used (for well of 1200m depth). List of

chemical likely to be used onsite is provided in Table 3.11 below.

Table 2-11: List of Chemicals and Quantities to be used during Drilling

S.N Name of Chemical Consumption(MT) / well

1 Bentonite 12.0

2 Caustic Soda 2.0

3 Soda Ash 0.4

4 PHPA 1.2

Total Tonnage 15.6

2.10.5 Cement type, additives and quantity

The details of the cement type, additives and quantity to be used is detailed below:

Type of Cement: Oil well cement-Class-G

Quantity of Cement: 40 Metric Ton/per well Cement Additives: PVC resin, Silica Flour, Retarder (R-53), Friction reducers (FR-22),

Defoamer Logistics: As mentioned earlier, the site is well connected through railway and roads network.

However the nearest airport is at Kolkatta, which is approximately 160 km from the block.

Such connectivity means will help in transportation of personnel and equipment and

machineries to the site. The internal roads within the block are also well developed, which can

be used as a means of transportation of vehicles and machineries within the site.

Hired vehicles would be used for carrying personnel as well as equipment to the site. The heavy

vehicles like trucks and tankers would be used for movement of materials and equipment;

whereas light motor vehicles would carry personnel to the site.

2.11 PROJECT BENEFITS

Proposed development of CBM wells will provide benefits to the society as well as the

economy at a large scale. Following benefits are envisaged from the proposed drilling

operation:

2.11.1 Improvement in Physical Infrastructure

Drill site development may lead to improvement in road connectivity in the area, if required.



The proposed activity may sometimes lead to improvement in the basic road infrastructure as

when required.

2.11.2 Employment Potential

During site construction, approximately 100-150 workmen are likely to be involved. Most of

workforce employed during the stage will be semi-skilled. People from adjoining areas will be

given preference according to the skill sets possessed.



3 DESCRIPTION OF THE ENVIRONMENT

This chapter describes present environmental settings of the entire block and its surrounding

areas. The total acreage of 350 sq. km. comprises of a northern sector of 240 sq. km. (Sector-

A) and a southern sector of 110 sq. km. (Sector-B). This includes physical environment

comprising of land, water, air, noise, biological and socio-economic environment. Attributes of

physical environment like air, water, soil and noise quality in the surrounding area was assessed

based on monitoring carried out for various environmental parameters in this region of pre-

monsoon i.e. April 2015 and on secondary data made available from reconnaissance visit to the

site. Detailed information on geology, meteorology, prevailing natural hazards like floods and

biological characteristics of the area is collected from literature reviews, past studies and

information made available by Government Departments or local agencies.

Reconnaissance field surveys and consultations were also carried out with local people and

Government Departments or agencies during April’15 to understand and record the existing

environment prevailing in the area and the same was verified against published information

and literature. Various government regional offices were visited and information regarding the

block was obtained. The team from ARCADIS India Private Limited (Formerly SENES

Consultants India Pvt. Ltd.) met different state government officials and the brief of their

discussions has been summed up in the box (Box No. 3.1) below

Box 3-1: Consultation with Stakeholders

The socioeconomic environment has been studied through consultations with various

stakeholders in the villages within the Raniganj block. Additionally, socioeconomic data have

been obtained from the Census of India 2011. Major purposes for describing environmenta l

settings of the area are:

To understand the project need and environmental characteristics of the area.

To assess the existing environmental quality, as well as environmental impacts of future

operations.

To identify environmentally significant factors or geographical areas that can preclude

future developments.

The Environmental Engineer (Mr. Anjan Fouzdar), Pollution Control Board,

Durgapur Regional Office was apprised about the upcoming ONGC project.

Information on similar oil exploration activities conducted in the past in the neighboring

areas of the block was also obtained.

On a meeting with Mr. M.K Mandal, Divisional Forest Officer, Durgapur division it

was known that a part of Ukhara Protected Forest under Burdawan district and part of

Gangajalghati Protected Forest under Bankura district falls in Sector B of the ONGC

Raniganj block.

On a discussion with Mr. Dhirender Mondal, Beat officer, Amarkanan the floral and

faunal diversity of Gangajalghati Protected Forest was obtained.



3.1 AIR QUALITY

3.1.1 Climate and Meteorology

Major part of the block falls in Burdawan district and a minor part in Bankura district. The climate

of Burdawan is characteristic by hot and humid climate. It receives adequate rainfall from south

west monsoon, which sets in the latter half of June and withdraws by the middle of October. Pre-

monsoon rains are received during March- April.

Rainfall: As per the rainfall data obtained for Burdwan district for the period between 2009-2013

from Hydromet division, IMD Delhi, it can be observed that the annual average rainfall in the

district is 110.26mm.

Table 3-1: Annual Average Burdawan District Rainfall (2009-2013)

RAINFALL (mm)

YEAR JAN FEB MARCH APR MAY JUNE JULY AUG SEPT OCT NOV DEC

2009 0.0 0.0 21.3 0.3 228.8 48.6 254.4 371.3 302.7 69.0 0.2 0.0

2010 0.0 8.2 10.0 13.1 110.0 223.2 190.8 122.8 209.1 49.9 8.3 43.8

2011 0.0 0.7 27.1 55.4 116.8 417.0 259.5 348.8 240.3 51.4 0.6 0.0

2012 31.1 7.8 3.2 63.3 39.4 133.9 424.5 277.9 194.6 57.2 37.5 6.2

2013 6.8 17.5 4.6 41.5 175.1 210.2 145.5 341.1 250.7 342.5 0.0 0.0

Hydromet division, IMD Delhi

However, the nearest IMD station to the Raniganj Block is the Bankura IMD station, it is 43km

(approx.) in the south western direction from the block. The data collected from IMD station

includes wind speed, wind direction, temperature, relative humidity, atmospheric temperature

and rainfall over a period of 10 years. The table (Table 3.2) below shows the climatologica l

data of IMD station Bankura for the period of 1999-2012.

Table 3-2: Climatological Data: IMD Station -Bankura (1999-2012)

Month Atmospheric

Pressure (mb) Temperature (°C) Relative Humidity

(%) Rainfall (mm)

Monthly Total

Max Min

Jan 1014.7 23.2 12.8 70 105.5

Feb 1012.8 30.2 17.6 62 155.6

March 1008.5 32.5 23.2 52 291.2

April 1005.0 36.3 27.9 59 394.7

May 1000.9 35.9 39.1 65 1099.9

June 997.9 35.1 28.1 76 2574.9

July 998.4 31.4 27.9 83 3125.7

Aug 999.8 30.5 27.4 85 2567.5

Sept 1003.5 30.4 27.0 85 2677.7

Oct 1009.1 28.8 24.7 82 1117.1

Nov 1012.9 26.5 18.4 76 115.9

Dec 1015.0 23.3 14.2 73 73.9



Temperature: As per the table above (Table 3.2), it can be seen that the average maximum

temperature is 30.3°C and the minimum temperature is 24.0°C in Bankura district.

11The maximum temperature of Burdwan district is recorded as 39°C and the minimum

temperature as 7°C. The cold season starts from about the middle of November and continues

till the end of February. March to May is dry summer intervened by tropical cyclones and

storms. June to September is wet summer while October and November is autumn.

Wind Speed: Annual wind speed distribution irrespective of wind direction at 0300 UTC at

Bankura as shown in Figure 4.1 suggests 0.5mps to 1.0mps as the most common wind speed.

Wind rose Diagram

Taking the proximity of Bankura IMD station to be over 45-60 kms away from both sector’s

A and B of the Raniganj block, the annual wind rose reported for Bankura by IMD, Bankura

was taken into consideration Figure 3.1. Annual wind rose prepared from daily surface wind

data recorded at 0300 UTC for 1971 – 1996 for Bankura suggests the most frequent occurring

direction from the west (W) followed by north east (NE) and south (S). However, 45% of the

years, winds are calm in Bankura. The highest wind speed more than 4.5mps blow from many

directions in this synoptic hour.

Figure 3-1: Annual Wind Rose for Surface Wind Data (1971-1996) of Bankura

3.1.2 Primary Meteorological Monitoring and Interpretation

Climate and meteorology of a place can play an important role in the implementation of any

developmental project. Meteorology (weather and climate) is also the key to understanding

local air quality as there is an essential relationship between meteorology and atmospheric

dispersion involving the wind in the broadest sense of the term. The meteorology data

conducted during January, 2012 at Malandighi was considered as the meteorology station

11 Barthaman.gov.in



12km from CBM block. The hourly micro-meteorological data collected during study period

has been analyzed to generate the pre-monsoon season wind rose. The predominant wind

direction was observed to be from NW with an average wind speed value of 0.80 m/s. The wind

rose diagram generated for the study period has been presented in the Figure 3.2 and wind

speed & wind direction data provided in Annex XI for reference.

Figure 3-2: Wind Rose Diagram for Pre Monsoon Season

3.1.3 Ambient Air Quality

Existing quality of the air environment serves as an index for assessing pollution load and

assimilative capacity of any region. Under the NAMP programme, air quality has been

monitored in 9 locations during April- December, 2011 in Burdwan district viz. Benachit i,

PCBL More, Bidhannagar, Asansol, Angadpur, Mangalpur, Burnpur, Raniganj and Jamuria for

three parameters (PM10, SOx and NOx) by West Bengal Pollution Control Board. However, the

ambient air quality status of the stations in proximity to the block area have been studied and

the same is shown in Table 3.3

Table 3-3: Ambient Air Quality Monitoring by WBPCB during 2011-12

S.N Location of monitoring station

Distance from the block

Parameters µg/m3

PM10 SO2 NOX

1

Asansol Located 13.8km away towards north-west of

Sector B and 5.36km south of Sector A of block.

108

6.8

57.9

2 Benachiti Located 2.2km south of Sector B of block 105 7.3 56.0

3 Bidhannagar Located 7.8km away south of Sector B of block 67 5.6 43.5

4 Raniganj Within Sector B of the block 170 9.0 62.6

5 Burnpur About 5.7km south of Sector A 146 6.9 48.0

6

Jamuria Part of it falls within southern side of Sector A

of block.

110

6.5

45.2

CPCB standard for Industrial, Residential, Rural and Other Area (Annual

µg/m3 )

60

50

40



From Table 3.3, it can be inferred that Particulate matter (PM10) and Nitrogen Oxide (NOx)

was found above the annual CPCB limit of 60 µg/m3 and 40 µg/m3 in all six monitor ing

stations. The higher concentration of dust may be attributed to typical summer season, when

wind adds considerable quantity of dust into the atmosphere. However, Sulphur Oxide (SO2)

concentration was found below the annual CPCB limit of 50µg/m3.

Asansol- Durgapur region and Raniganj –Kulti - Jamuria area being an industrial base to a

number of large and medium industries. A number of small industries has also grown up over

these years to service these bigger and small industries. The principal industries beside

Durgpaur Steel Plant and Durgapur Project are production cement making machinery, boilers,

pressure vessels, etc., alloy steel plant production a variety of alloy steels, Durgapur Chemicals

Limited, production basic organic and inorganic heavy chemicals, Durgapur Thermal Power

Station, Mining & Allied Machinery Corporation production coal mining, bulk handling

equipment’s and other heavy machinery. Hence, the main contributing source of air pollut ion

in the area are the industrial emissions and heavy vehicular traffic carrying raw and finished

material. During the reconnaissance survey, it was also observed that the roads leading to

villages located interior to the block are dusty and unpaved.

Primary Ambient Air Quality Monitoring:

Primary ambient air quality monitoring was conducted in March – June 2017 at ten locations

within and around the block.

Methodology & Location of AAQ

Existing ambient air quality of the study region was monitored at total of ten identified locations

within the two sectors of the block viz. three in Sector A and seven in Sector B. The purpose

of selecting the ten monitoring locations was primarily to cover the entire block area

(350sq.km). Since the block is located in an industrialized zone, having a number of coal, iron

and steel based industries. Hence, CPCB guideline has been considered, while selecting the

locations as mentioned below:

a) Prevailing and upwind direction



a) Covering all 1200 sector

b) Representatives of likely impact areas

c) Sensitive locations if any and

d) Major habitation

Parameters were monitored on a 24 hourly basis which included Particulate Matter PM10 and

PM2.5, Sulphur Dioxide (SO2), Oxides of Nitrogen (NOx), Carbon monoxide, Non methane

hydrocarbons (NMHC), Volatile Organic Compounds and Methane hydrocarbons. Respirable

Dust sampler and Gas analyzer were used for monitoring of ambient air quality at all ten

locations. Selected locations of ambient air quality monitored are shown in Figure 3.3 The

pictures below show the ambient air quality monitoring conducted in the block (Photo 3.1)

Table 3-4: Ambient Air Sampling Locations in Sector B during March-June 2017

Monitoring

Station Locations Wind direction Nature of Area Distance from met.

Station (Patswara

village)

AAQ1 Bansia Upwind (ENE) Residential 6.5km

AAQ2 Hetobda Upwind (E) Residential 3.5km

AAQ3 Patswara Upwind Residential 0.0 and same location

AAQ4 Andal town Downwind (WSW) Industrial area 5.2km

AAQ5 Bahula village NNW Outside Sector B Residential and

commercial area

8.7km

AAQ6 Bhatmura village NNE (Outside sector B) Residential and

commercial area

9.5km

AAQ7 Laudoha village NE (Outside Sector B) Residential area 7.4km

AAQ8 DVC-DTPS

Colony

SSW (Outside Sector B) Industrial /Residential

area

8.8km

AAQ9 Benachity village SSW (Outside Sector B) Residential and

commercial area

6.3km

AAQ10 Kamalpur

village

SE (Outside Sector B) Residential area 5.4km

Photo 3-1: Ambient Air Quality Monitoring



Figure 3-3: Ambient Air Quality Monitoring Locations for March -June 2017



AMBIENT AIR QUALITY WITHIN EXPLORATORY BLOCK CONDUCTED IN

APRIL – MAY 2015

An air quality monitoring study was carried out to understand the prevailing air quality of the

block and its surrounding area. The location details of the air monitoring conducted is given

below in Table 3.5

Table 3-5: Ambient Air Sampling Locations in Both Sectors of Block

Monitoring Station

Locations

Wind

direction Nature of Area

SECTOR A

AQ1 Mahishmura Upwind Residential

AQ2 Kelejora Upwind Residential

AQ3 Patharchur Downwind Residential

SECTOR B

AQ4 Bansia Downwind Residential

AQ5 Banshgara Downwind Residential

AQ6 Pahari Downwind Residential

AQ7 Arati Downwind Residential

AQ8 Tamla Upwind Residential

AQ9 Andal (Near Dubchururla

Village)

Upwind Industrial

AQ10 Near Shrirampur Upwind Residential

Parameters were monitored on a 24 hourly basis which included Particulate Matter PM10 and

PM2.5, Sulphur Dioxide (SO2), Oxides of Nitrogen (NOx), Non methane hydrocarbons

(NMHC) and Methane hydrocarbons. Respirable Dust sampler UERL/AIR/RDS/01 and Gas

analyzer were used for monitoring of ambient air quality at all ten locations. Selected locations

of ambient air quality monitored are shown in Figure 3.6 The pictures below show the ambient

air quality monitoring conducted in the block (Photo 3.2)

Photo 3-2: Ambient Air Quality Monitoring

Particulate Matter PM10 and PM2.5:

Particulate matter PM10 was found above the CPCB permissible limit of 100 µg/m3 in three

locations monitored viz. Patharchur village (141 µg/m3), Andal village (123.4µg/m3) and



Srirampur village (127.8 µg/m3). PM10 monitored in the remaining seven locations showed

concentration well within the CPCB limit.

During PM2.5 monitoring, nine locations out of ten showed concentration well below the

permissible limit of 60 µg/m3, however monitoring conducted at Patharchur village showed

concentration as 63.8 µg/m3 i.e. well above the CPCB permissible limit of 60 µg/m3. The same is shown in the following Figure 3.4

Figure 3-4: Graphical Representation of PM10 and PM2.5 in the Ambient Air Samples

High concentration of PM10 and PM2.5 in Patharchur village can be due to the sand mining

activities and brick kiln operating in the neighboring area. High concentration of PM10 can

in Andal and Srirampur village can be attributed to their proximity to a number of sponge

iron industries and thermal power plant. No industrial establishments are present in the vicinity

of the remaining monitored locations.

Sulphur Dioxide (SO2) and Nitrogen Oxide (NOx):

It can be interpreted from the results shown in Annexure XII that all the ten monitor ing

locations showed Sulphur dioxide and Nitrogen Oxide concentration well below the

permissible limit set by CPCB i.e. 80 µg/m3. The mean average value for SO2 monitored at all

ten locations ranged between 12.9-21.6µg/m3. The mean average value for NOx monitored at

all ten locations ranged between 16.6-32.8/m3. The monitoring result for SO2 and NOx has

been graphically represented and shown in the following Figure 3.5

Figure 3-5: Graphical Representation of SO2 and NOx



Methane Hydrocarbons (HC) and Volatile Organic Compounds (VOC):

Determination of HC and VOC: The analysis requires drawing a fixed-volume portion of

the sample air at a low flow rate through a glass-bead filled trap that is cooled to approximate ly

-1860C with liquid argon. The cryogenic trap simultaneously collects and concentrates the

NMOC (either via condensation or adsorption) while allowing the methane, nitrogen, oxygen,

etc. to pass through the trap without retention. After the fixed- volume air sample has been

drawn through the trap, a helium carrier gas flow is diverted to pass through the trap, in the

opposite direction to the sample flow, and into a Flame Ionization Detector (FID). When the

residual air and methane have been flushed from the trap and the FID baseline re-stabilizes, the

cryogen is removed and the temperature of the trap is raised to approximately 900C. The organic

compounds previously collected in the trap revolatilize due to the increase in temperature and

are carried into the FID, resulting in a response peak or peaks from the FID. The area of the

peak or peaks is integrated, and the integrated value is translated to concentration units. The

mean concentrations of various pollutants determined are given below for each parameter.

Analysis of methane hydrocarbon was conducted using Gas chromatography method IS: 5182

(Part XVII). Monitoring result for Methane hydrocarbon and VOC’s are shown in Table 3.5



Table 3-6: Ambient Air Quality Monitoring Results for HC, NMHC And VOC

VIILAGE MEAN VALUE MEAN VALUE

Methane hydrocarbons

(HC) ppm

Standard

method

Volatile organic

compounds as BTX

(VOC) µg/m3

Standard method

AQ1 <5.0

( IS 5182 part- 17)

<5.0

AQ2 <5.0 <5.0

( IS 5182 part- 11) FID Detector GC method

AQ3 <5.0 <5.0

AQ4 <5.0 <5.0

AQ5 <5.0 <5.0

AQ6 <5.0 <5.0

AQ7 <5.0 <5.0

AQ8 <5.0 <5.0

AQ9 <5.0 <5.0

AQ10 <5.0 <5.0

* Detectable Limit for VOC ( as BTX ) is 5 µg/m3

*Detectable Limit for Methane hydrocarbon (HC): 5 ppm

Methane Hydrocarbon and Volatile Hydrocarbon: Concentration for methane

hydrocarbons at the ten sampling stations showed concentration Below Detection Limit.

Concentration of Volatile Organic Compound as BTX was also found to be Below Detection

Limit.



Figure 3-6: Ambient Air Quality Monitoring Locations in Both Sectors (A+B) for 2015



3.2 NOISE

Noise Level was monitored at 10 locations within the block. Three locations were identified

in Sector A and seven locations were identified in Sector B of the block area. All major road

junctions and sensitive receptors (settlements) and well locations were taken into

consideration while selecting the noise monitoring locations. Noise levels are recorded with

the help of a digital noise level meter. Noise level is recorded for 24 hours and the noise quality

is reported in the form of db (A) day & night for each of the 10 locations. Daytime is

considered between 06:00 a.m. to 22:00 p.m. and night between 22:00 p.m. to 06:00 a.m.

As per the reconnaissance survey visit, both sectors A and B have industrial establishments of

cement, sponge iron, steel, thermal power plants etc. and hence their operational activit ies

are the major noise generating sources apart from the vehicular movement. The location

details of the noise monitoring location is shown in Table 3.7

Table 3-5 Noise Monitoring Location Details

Sampling

code

Locations

Noise levels Category CPCB limit

Day dB(A) Night dB(A) Day dB(A) Night dB(A)

N1 Mahismura village 48.6 36.5 Residential 55 45

N2 Kelejora village 49.5 36.7 Residential 55 45

N3 Patharchur village 50.9 36.9 Residential 55 45

N4 Bansia village 45.6 36.9 Residential 55 45

N5 Banshgara village 45.7 36.4 Residential 55 45

N6 Pahari village 48.4 36.1 Residential 55 45

N7 Arati village 49.1 39.9 Residential 55 45

N8 Ichhapur village 51.2 39.8 Residential 55 45

N9 Andal village 54.4 42.7 Commercial 65 55

N10 Srirampur village 50.6 41.1 Residential 55 45

The location of noise monitoring stations is shown in Figure 3-7

Interpretation of noise quality results

Ambient noise monitoring is conducted at ten monitoring locations within the block. Ambient

noise monitoring (Table 3.7) within the block reveals that noise levels during day time ranged

between 45.6 to 54.4dB (A) and during night time between 36.1 to 42.7dB (A). Ambient noise

quality results, revealed that all noise levels recorded at respective locations were below the

stipulated CPCB noise limits for day and night time both for Residential and Commercia l

area category.



Figure 3-7: Noise Monitoring Location Map of Sector A and B



3.3 LAND USE

Existing land use pattern and land cover distribution of exploratory block is studied from

satellite imagery, Topo-sheet available from Survey of India and information collected during

field surveys. The land use of the region is largely influenced by:

Topographical features;

Number of human settlements/habitation, their density and distribution; and

Relief and geological features

3.3.1 Area Details of 10 km from Block Boundary

The site surrounding area within 10 km from the block boundary is studied on the basis of

available satellite imagery of the area. The site surrounding area of the block comprises of

agricultural land, followed by settlements of densely populated towns to small villages,

network of national and state highways (NH- 2 and SH-5). The major surface water body in

the study area (10km buffer area) are Damodar River (flowing NW-SE direction in the block)

which is a seasonal river, and Ajay river (flowing in the north-east direction of Sector A of the

block). Maithon dam located 7km north-west of Sector A of the block. There is no Biosphere

Reserve, National Park, Sanctuary or Reserved Forest within the 10 km buffer area of the

block. Please refer Figure 3.8

3.3.2 Land Use Pattern within Block Area

The block covers a geographical area of 350sq.km. The block is divided into two sectors A and

B. Sector A has an area of 240sq.km and Sector B has an area of 110sq.km. Paddy and

sugarcane are the two characteristic crops of Burdwan district. However, the villages falling

within the block grow paddy for one season as per availability of water. The remaining part of

the year, the locals grow commonly grown vegetables like pumpkin, spinach, potatoes, brinjal

etc.

Land Use pattern in Sector A: Maximum percentage of land use is covered under

agriculture (80.87%). Settlements cover 10.38% of the area, over 3.71% of the area is occupied

by industrial area, which includes Kulti and Jamuria Industrial area etc. The sector has small to

medium sized village ponds. Ajay river passes through the north east side of Sector A, however

34km2 of area adjoining the Ajay river is relinquished. Besides, on the directive of

MoP&NG&MOC, another 2.68km2 pertaining to proposed Kabitirtha coal block in Sector A

was also relinquished. Ajay river separates the Sector A from Birbhum district in the north.

Damodar river flows along the South-western side of Sector A. There is no Reserve/ Protected

forest area within Sector A, however, some scattered plantations are found along roadsides,

canals and river. The land-use distribution of the area is presented in Table 3.8 and is shown

in Figure 3.8



Table 3-6: Land Use Distribution of Sector A of the Block

Land-use Type Raniganj Block-SECTOR A

Area (sq. km) Percentage

Agricultural land 194.08 80.87%

Settlements 24.912 10.38%

Water bodies 5.136 2.14%

Transportation 2.472 1.03%

Stony Area 4.464 1.86%

Industrial area 8.904 3.71%

Total 240 sq.km 100.00

Land Use pattern in Sector B: Maximum percentage of land use is covered under

agriculture (60.53%). Settlements cover 12.39% of the sector follower by water bodies (8.06%).

Over 5.72% of the area is occupied by industrial area, which includes Durgapur and Raniganj

Industrial area etc. On the directive of MoP&NG & MOC, 1.53km2 area pertaining to Andal

Babuisole coal block was relinquished. The villages within the sector has small to medium

sized village ponds. Damodar river flows along the South-western side of Sector B. Forests

occupy merely 3.43% of the sector, there are two Protected Forest namely Ukhra Protected

Forest in Burdwan district and Gangajalghati Protected Forest in Bankura district. There are

also some scattered plantations observed along the roadsides and Damodar river. The land-use

distribution of the area is presented in Table 3.9 and is shown in Figure 3.8

Table 3-7: Land Use Distribution Of Sector B Of The Block

Land-use Type Raniganj Block-SECTOR B

Area (sq. km) Percentage %

Agricultural land 66.58 60.53

Settlements 13.6 12.39

Water bodies 8.86 8.06

Scrub land 2.11 1.92

Transportation 7.22 6.56

Stony Area 1.53 1.39

Industrial area 6.3 5.72

Forest 3.77 3.43

Total 110 sq.km 100.00



Figure 3-8: Land Use Pattern of the Block (Sector A and B)



3.3.3 Topography and Drainage

Geomorphological setting of Burdwan district can be divided into three units:

a) Plateau area (extension of Chotanagar are of Bihar) the westernmost Asansol – Kulti sector.

b) Undulating area Asansol- Durgapur sector.

c) Flat alluvium terrain –from Durgapur eastwards

Regional Topography: Gently, undulating terrain with highest elevation in the central part of

Raniganj Coalfields area and sloping towards north and north-east i.e. towards Ajoy River and

towards south i.e. towards Damodar River is observed. General elevation ranges from 75 m to

125 m above mean sea level. The highest elevation observed in the northern areas and the

lowest elevation observed near the Damodar River in the extreme south-east of buffer zone.

Study Area: The topography of Sector A of the block mainly comprises of flat terrain in the

western part, with some undulating area in the north eastern part. Ajay river flows across the

north eastern part of the Sector. In sector B of the block comprises of flat terrain with some

undulations in the south-western part near the Damodar river. River Damodar flows across the

south-western part of the sector. Most of the land is taken up for agriculture. Sector A has its

drainage towards its south east direction while Sector B also has its drainage towards its south

eastern direction.

River Damodar rises in the Chota Nagpur after a south easterly course falls in the Hoogly river.

The river first touches upon the Burdwan district at its junction with the Barakrar. It then flows

in the south easterly direction past Raniganj and Andal forming the boundary between Burdwan

and Bakura. The course of the river is tolerable straight.

The Ajay takes its rise in the hills of the Santal Parganas and drains a large portion of their

southern and western slopes. It first touches the district near the Gaurangdi station ten miles

north west of Asansol, and flowing thence due east forms the northern boundary for about

eighty miles until it enters the Katwa subdivision near the village of Kumarpur some fifteen

miles above its confluence with the Bhagirathi at Katwa.

The digital elevation map showing the topography and drainage of the block has been shown

in Figure 3.9



Figure 3-9: Digital Elevation Map Showing Topography and Drainage of the Block


Arcadis/10002910/october’17 86 ONGC

3.3.4 Physiography and Geology

Geologically, the district is composed of Gondwana rocks. The soil is partly clay more or less

altered and partly a red coloured coarse grain sandFigure 3-6:, large surfaces composed of

which are found in the beds of the Damodar and Ajay river. In Raniganj and few other coal

fields of the Damodar valley, good thickness of black and grey shales with bands and nodules

of clay ironstone. The Raniganj beds comprise a great thickness of coarse and fine sandstone

mostly false bedded and felspathic, with shales and coal seams, which are frequently

continuous over considerable area. The geological map has been shown in Figure 3.10 and the

regional stratigraphy of the region is shown in Figure 3.11. It can be inferred from Figure 3.12

that the main geological formation in the two sectors is coal seams.

The overall topography of the region is flat with some undulations along the Damodar River,

which forms the southern boundary and controls the drainage of the area in Sector B of the

block. Ajay river flows on the north east part of Sector A of the block. The predominant

physical feature over major part of the study area is the flat terrain with undulation along the

water bodies.



Figure 3-7: Geological Map of Raniganj Coal Basin

Source: The Raniganj Coal Basin: an example of an Indian Gondwana rift by S.C Ghosh; Jadavpur University, Department of Geological Sciences, 2002



Figure 3-8: Regional Stratigraphic Sequence Of Raniganj Basin

Source: Source: The Raniganj Coal Basin: an example of an Indian Gondwana rift by S.C Ghosh;

Jadavpur University, Department of Geological Sciences, 2002

3.3.5 Proximity of Sea/Water Bodies

The major surface water body in study area is Damodar and the Ajay river. The availability of

sea / water bodies in the block is tabulated in Table 3-10

Table 3-8: Proximity of Water Bodies to the Block

Sea / Water body Aerial Distance in km Block Boundary Distance from block Boundary River

Damodar Passing through Sector B of the block from north west to

south east direction.

A stretch of 10km of Damodar river

flows through Sector B

Ajay Passing through north east direction of Sector A of the block.

Canal

Nunia khal Flowing from NW – SE side of Sector A

Punta khal

Passing through the middle of Sector A and joining the

Damodar river towards south of the Sector.

Nallah

Damodar nallah

Rising in the southern portion of Sector A and joining

the Damodar river

Singaran nallah

Passing through the south eastern side of Sector A and

entering to the north-eastern side of Sector B of the block

Tamla nallah Passing through western part of Sector B of the block



Photo 3-3: Block village small to medium sized ponds

Photo 3-4: Damodar river flowing in south western direction across Sector B of the block (April’15)

Photo 3-5: Ajay river (dried) flowing NE of Sector A of the block (April’15)



3.3.6 Soil Condition

12Burdwan region is blessed with various types of soils like Red and yellow ultisols, laterit ic

ultisols, alfisols older alluvium, entisols younger alluvium. The entire western region has red

and yellow ultisols, whereas entisols younger Alluvium soil is found in the entire eastern

region. Central region is blessed with a mixture of laterite ultisols and alfisols older alluvium. 13Rice is the most important crop grown in the study area. The rice grown with its numerous

varieties can broadly grouped under the three primary classes distinguished from one another

by distinct characteristics and there are: The Aus or autumn, the Aman or winter and the Boro

or the summer rice. Paddy covers maximum of the gross cropped area. Among commercia l

crops Jute, Mesta and Sugarcane, potato, oil seeds are cultivated in marginal area. The major

cropping patterns include paddy-wheat-vegetables, paddy – potato – sesame, paddy – vegetable

– mustard and jute – paddy – vegetables.

Photo 3-6: Red and Yellow Ultisols soils of the region

In some parts of the block area, cultivation is entirely dependent on the monsoon, and irrigat ion

facilities are inadequate. However, the developing irrigation system of Damodar Valley

Corporation has been very helpful in meeting with the irrigation water needs in some parts of

the block.

Detailed monitoring of soil quality of the area was carried out in the pre monsoon season. Six

soil monitoring locations were identified in the block area. The locations were selected with a

purpose to cover the entire block area particularly to get a proper understanding of the soil

variability in the block. One sample from each location was collected using

Auger/Farah/Spade. Soil sampling locations along with type of area and detailed analysis

results depicting physio-chemical characteristics of soil in representative locations within the

study area is given in Tables 3-11. Map showing soil sampling locations within the block is

given in Figure 3.12

12 Asansol City Development Plan-Asansol Durgapur Development Authority, 2006 13 bardhaman.nic.in



Table 3-9: Soil Sampling Locations

Station Code Sampling Location Type of Area

SECTOR A

S-1 Dubchururla village, Bardwan district Agricultural land

S-2 Banguri village, Bardwan district Agricultural land

S-3 Amrai village, Bardwan district Agricultural land

S-4 Bansia village, Bardwan district Agricultural land

SECTOR B

S-5 Kelejora village, Bardwan district Agricultural land

S-6 Patharchur village, Bardwan district Agricultural land

Interpretation of soil sample analysis

Soil samples are analyzed for texture, porosity, bulk density, SAR, CEC, pH, conductivity,

nitrogen, phosphorous, potassium, water holding capacity, etc. The summary results of soil

samples are presented in Annexure XIII. Soil analysis table indicates that the soil, at all the

monitoring locations is acidic with pH in the range between 4.77 to 6.63. Soil's capacity to hold

water has several important influences on water management. The textural class predominate ly

as per the soil samples analyzed for their silt, sand and clay ratio is Clay Loamy soil in the

study area. The porosity of the soil samples analyzed vary between 37.5-56. It is observed that

the soil samples have a high percentage of silt and clay particles, which describes fine soil, has

a higher water-holding capacity. Fine textured soil holds more water for a long time; while

coarse soils having fewer and larger pores cannot retain as much water.

Sodium adsorption ratio (SAR) is a measure of the suitability of water for use in irrigat ion.

High concentration of sodium disperses soil colloidal particles, rendering the soil hard and

resistant to water penetration. The higher the sodium adsorption ratio, the less suitable the

water is for irrigation. The potential of sodium hazards increases in soil with higher SAR

values. When the SAR rises above 12 to 15, plants have difficulty absorbing water. Analys is

of samples shows SAR for all the monitoring locations ranging between 0.8 to 1.57. This shows

that the soils have good infiltration and permeability which is beneficial for crop production

like rice.

The Electrical conductivity observed is in the range of 104.5- 390 µs/cm. Available Potassium

in all six samples was observed in the range of 29.8 – 180.4mg/kg with maximum observed in

Banguri village and lowest found in Bansia village. Available Phosphorus was observed in the

range of 16 – 52.7mg/kg with lowest in Bansia and highest observed in Kelejora village.

Available Nitrogen was also observed in the range 322 – 514mg/kg. The representation of the

same is shown in Table 3.12



Table 3-10: Nutrient Analysis of the Soil Samples Analyzed

Parameters S1 S2 S3 S4 S5 S6

Available Potassium, mg/kg 49.4 180.4 74.9 29.8 160 60

Available Nitrogen,mg/Kg 514 457.5 508.5 222.8 499 322

Available Phosphorous,mg/Kg 34.3 30.2 17 16 52.7 19.6

Photo 3-7: Soil sampling



Figure 3-9: Soil Quality Monitoring Locations in the Block (Sector A and B)



3.3.7 Disasters/Man Made Hazards

Burdwan district faces various disaster throughout the year due to climate condition,

geographical location and industrial belt areas. The major thrust is being given on ‘flood’ as it

causes maximum damage and loss of property and human lives. Some cases of Arsenic hazard

are being studied by the Public Health Engineering Department. The cases of mining disaster

have been reported in areas of Raniganj, Andal, Pandabeswar, Salanpur Blocks and the

surrounding areas have been vulnerable for such hazards. The industrial area of the district -

Durgapur, is highly vulnerable to chemical disaster like gas leakage, pollution hazard due to

drainage of chemical waste etc. The table below (Table no. 3.13) gives the summary of the

type of disasters experienced in the blocks/taluka of Burdwan which partially or fully fall in

the Raniganj study area.

Table 3-11: Block Wise Details of Disaster in Burdwan District

S.N Block Natural disaster Man-made disaster

1 Barabani Drought, Cyclone Land subsidence, House Fire, Road Accident

2

Raniganj

Cyclone, Flood, Drought,

Heat Wave, Earthquake,

Rain

Chemical hazards, Land subsidence, House

Fire, Road Accident

3 Salanpur Drought, Cyclone, Flash flood House Fire, Road Accident

4

Jamuria Cyclone, Flood, Drought, Heat

Wave, Earthquake, Rain

Chemical hazards, Land subsidence, House

Fire, Road Accident

5

Andal Cyclone, Flood, Heat Wave-

Sunstroke, Hail Storm / Whirl wind,

Tornado

House Fire, Road

Accident, Land

subsidence Source: District Disaster Management Plan, Burdwan district

3.3.8 Seismicity of the Area

The area forms a part of seismic zone III of Seismic Zoning Map of India, updated by

India Meteorological Department (IMD) and National Institute of Disaster Management

(NIDM), and thus can be said to be located in an area of moderate seismic hazard Figure 3.13

below:-



Figure 3-13: Seismic Zone Map of West Bengal

Source: West Bengal Disaster Management Department

3.3.9 Flood Risk

Damodar river flows from NW to SE direction partially across south of Sector B of the Raniganj block. The total stretch of the river in the flowing through Sector B is approximately 10km.

The region adjoining the river is undulating. The ravaging floods in the Damodar river and its tributaries have somewhat been controlled with the construction of several dams.

The river Damodar originating from Palamau hills in Jharkhand and bifurcates into two

channels at Beguahana. The main flow passes through Mundeswari channel and discharges into

Rupnarayan. The other one Amta channel carries discharge during high flood and outfalls into

the Hooghly. The river causes floods in its lower reaches in the districts of Burdwan, Hooghly

and Howrah, mainly on the right bank of the river below Beguahana.

Table 3-12: Details of Gauge Station Over Damodar River during Rainy Season

River GaugeStation Danger

Level D.L Extreme Danger

Level E.D.L

Damodar Randia 52.134 52.893

Edilpur 32.790 32.950

Jamalpur 23.237 23.542

Amta 5.640 6.240

Champadanga 12.890 13.500

Mundeswari/Harinkhola 12.800 13.410

Source: Annual Flood report-2013, Irrigation and Waterways Directorate, Govt. of West Bengal



The river Ajoy originates from the hills near Deoghar in Jharkhand. The Principal tributar ies

of the river are - Hinghlow, Kunoor, Pathro and Jayanti. The floods of this river are flashy and

of short duration. There are some pockets in the Ajoy-Kunoor catchment which suffer from

frequent inundation. Large areas of Burdwan and Birbhum districts face inundation whenever

floods of the Ajoy coincides with that of the Mayurakshi, the Pagla, the Bansloi and the

Bhagirathi. Status of gauge stations over Ajoy river during the rainy season are given below:

Table 3-13: Details of Gauge Station Over Ajoy River During Rainy Season

River GaugeStation Danger Level D.L

Extreme Danger Level E.D.L

AJOY Sikatia 165.64 166.24

Katwa 14.48 15.04

Gheropara 39.416 40.416

Budra 39.426 40.341

Source: Annual Flood report 2013, Irrigation and Waterways Directorate, Govt. of West Bengal

14Flood history

Floods were reported in West Bengal during second week of September 2009, due to

release of water from the DVC (Damodar Valley Corporation) reservoirs in Durgapur. Several

villages in Burdwan, Bankura, Murshidabad, Hooghly, Howrah and East and West Medinapur

districts were reported to be affected.The worst flood affected villages were reported to be

Singhpur, Ramchak, Chawli, Mansukha, Khansbar, Ranichak and Ramchandrapur. Rivers

Kangshabati, Shilabati, Gandheswari and Damodar were reported to be flowing above the

danger mark. The flood situation was reported to be improving by third week of September

2009.

Floods were reported in West Bengal during fourth week of June, 2011 due to intense

depression over Bay of Bengal causing heavy torrential rains. Release of water from Damodar

Valley Corporation reservoirs in Durgapur, has led to inundation in the low lying areas of West

and East Midnapore districts in West Bengal.

To mitigate downstream floods and to tap monsoonal peak flow the authority of Damodar

Valley Corporation (DVC) has constructed dams and barrages, viz. Tilaiya (1953), Konar

(1955), Durgapur Barrage (1955), Maithon (1957), Panchet (1959) and Tenughat (1978). In

spite of flood regulation by the DVC dams, the massive floods of southern West Bengal

occurred in 1959, 1978, 1995, 1999, 2000, 2006, 2007 and 2009 signifying the vulnerability of

lower valley to sudden floods in monsoon.

However, Figures 3.14, 3.15 and 3.16 showing the flood inundated areas during the recent

floods of 2009, 2011 and 2013 in West Bengal clearly show that the project site was not

inundated during these recent floods.

14 ISRO-Disaster management Program



Figure 3-10: Floods Inundated Areas in Parts of West Bengal During Floods of Sept 2009

Source: National Remote Sensing center



Figure 3-11: Flood Inundated Area in West Bengal During Aug 2011 Floods Figure 3-12: Flood Inundated Area in West Bengal During July 2013 Floods

Source: National Remote Sensing center



As per the Annual report 2010-2011 of Irrigation and Waterways Department, Kolkatta, a good

number of schemes in flood control and drainage were undertaken in 2010-11 for a number of

districts including Burdwan. The following table shows the financial and physical achievement

in a nutshell.

Table 3-14: List Of Schemes Being Undertaken For Flood Control And Drainage

Brief description

of the schemes

Object of

the Scheme

Source

of the

fund

No. of schemes in

2010-11

Total financial

involvement

(Crore of `)

Benefitted

districts

Ben

efi

tted

area

Un

der

ex

ecu

tio

n

On

go

ing

To

tal

Bank protection

Improvement &

strengthening of

embankment,

Erosion,

renovation of

sluices

Hydrauli

c

structures

Resuscitation of

drainage

channels.

To prevent

bank

erosion, to

prevent

flooding

and

to

mitigate

drainage

congestion

Core

Plan

11

7

39 15

6

93.40 Darjeeling

Jalpaiguri

Coochbehar

Dakshin

Dinajpur

Uttar

Dinajpur

Murshidabad

Nadia

Hooghly

Burdwan

North 24-

Parganas

South 24-

Parganas

Purba

Medinipu

r

Paschim

Medinipu

r

854.0

RIDF

Total 19 54 24 170.71 - 854.00

2 6

3.4 WATER AVAILABILITY

The main sources of water in block and its surrounding area are Ajoy and Damodar river in

Sector A and Sector B of Raniganj block. The Damodar River rises in the Khamarpat Hill

(Palamau District, Jharkhand) of Chotanagpur Plateau at about 609.57 metre above mean sea

level. Flowing easterly direction along the Gondowana coal-rich faulted trough, Damodar

meets with Barakar River near Dishergrah and finally in a sudden southerly direction below

Barddhaman and Hooghly districts it bifurcates into

a) The Kanki-Mundeswari and

b) The Amta Channel-Damodar

and joins with Hooghly River at Falta some 48.3km south of Kolkata. Damodar River Basin



(Figure 4.17) is about 23,370.98 km2 and is spread across states of Jharkhand (73.7%) and

West Bengal (26.3%). Mean annual rainfall of Damodar Catchment is 1295.4 mm (monsoon

rainfall - 1066.8 mm), having coefficient of variability is 16%. Damodar river flows over 1-2

km west from the boundary of Sector A and flows in the south eastern direction and crosses

Sector B of the block from NW-SE direction across a stretch of 10km.

3.4.1 Drainage network in the block area

The Ganga/Bhagirathi, with tributaries namely the Damodar, The Ajoy, The Barakar and many

other small streams viz. Kunur, Banka, Khari, Brahmani, Behula, Ghea, Mundeswari, Kana

etc. form the main drainage system of the district.

However, in particular to the study area: River Damodar trans versing Sector B forms the major

drainage. Ajoy river passes on the north eastern side of Sector A of block. Many small

tributaries originating from Ajoy and Damodar river pass through the block. The larger streams

within the district are the Kunur, a tributary of Ajay river, Nunia and the Singaran which drain

the Asansol subdivision.

The Nunia river enters the district from the north west flowing like a hill stream in a deep ravine

and after passing to the north of Sitarampur and Asansol eventually enters the Damodar at

Raniganj. Another tributary of Damodar River called the Singaran flows through Sector B of

the block. Singaran rises a little to the north of the Ikda junction on the Ondal loop line of the

Eastern Indian Railway and eventually drains into Damodar below Andal at Srirampur village.

Tamla rises a west to the Ukhra village and flows south east till it enters the Damodar near the

boundary of Shergarh pargana.

Damodar Valley Corporation have constructed a number of reservoirs, one of the same is

Maithon reservoir, which is in proximity to the block i.e approximately 6km (aerially) north of

Sector A in Dhanbad district in the state of Jharkhand. The total catchment area of the reservoir

is 6293km2. The average annual run off recorded is 2700MCM



Figure 3-13: Damodar River Basin

Source: International Journal of Geology, Earth & Environmental Sciences – Estimation Of Flash Flood Magnitude And Flood Risk In The Lower Segment Of Damodar River

Basin, India; Department of Geography, University of Burdwan



3.4.2 Damodar River Water Quality

15West Bengal Pollution Control Board monitored the Damodar river water quality at 5

locations during April 2011- March 2012, the locations details are shown below in Table 3.17

Table 3-15: Sampling Location Details

S.N Location of monitoring Distance from the Raniganj block

1

Dishergarh village after confluence with

Barakar river

Approximately 1.5km SW of Sector A

2.

Dhena village at downstream of IISCO steel

plant after Dihika outfall

Approximately 9.12km south of Sector A

and 17km NW of Sector B

3

Narayankuri village after confluence of

Nuniah Nallah

Within Sector B boundary.

4

Majher Mana village after confluence of

Tamla Nullah

Approximately 7.8km south of Sector B

5 Sadarghat near Krishak Setu, Burdwan Approx. 70.89km south of Sector B

The water quality monitoring data and the trends during April 2011 to March 2012 were studied

and the following interpretations were drawn on the basis of Class C classification of surface

water i.e. drinking water source after conventional treatment and disinfection.

1. The average oxygen level of the river water was above the tolerance limit standard

(4.0mg/l) in all stations. However, the DO value went below tolerance level at Majher

Mana in the month of June and July 2011.

2. The average concentration of BOD (Biological Oxygen Demand) in River Damodar were

found to be below the limit of 3mg/l in 3 stations (Disherganj village, Dhena village

and Narayankuri village). The sample collected from Majher Mana and Sadarghat

(downstream sampling stations) was found to be higher than the permissible limit

(3.0mg/l).

3. The water quality in terms of bacteriological contamination (TC and FC) was found to be

unsafe for human consumption without any proper treatment.

4. Micro pollutants (trace metals, pesticides etc.) as measured in the month of April in every

year were found to be well within the limits in all five stations.

West Bengal Pollution Control Board, Durgapur Laboratory monitors the surface water

quality of Damodar quarterly and the recent monitoring has been conducted at 12 locations

during Feb-March’15, the details of monitoring locations are given below:

15 Annual report 2011-2012, WBPCB



Table 3-16: Monitoring Location Details of Surface Water Sampling Stations of WBPCB

S.N Monitoring location Sampling code Distance from Raniganj block

1 Barakar at Asansol (Water intake point) SW1

2 Damodar at Dishergarh village SW-2 Approximately 1.5km SW of Sector

A 3

Damodar at d/s of IISCO after 3rd

outfall at Dhena village

SW3

Approximately 9.12km south of

Sector A and 17km NW of Sector

B

4 Damodar at Narainpur after confluence

with Nunia Nallah-

SW4

Within Sector B boundary.

5 Damodar near Mujher mana village

after confluence with Tamla Nallah

–

SW5

Approximately 7.8km south of

Sector B 6 River Damodar at Andal d/s SW6 Within Sector B

7 River Damodar at Andal u/s SW7 Within Sector B

8

River Damodar at Asansol u/s

SW8

Approx. 5-6 km away from

southern boundary of Sector A

9

River Damodar at Durgapur u/s

SW9

Approx. 2-3km away from

southern boundary of Sector B

10 River Damodar at Raniganj d/s SW10 Within Sector B

11 Water intake point for Burdwan town SW11

The surface water samples collected from Damodar river from all eleven locations shown pH

in the range of 7.58 – 8.8. Hardness was found in the range of 88 – 142mg/l. The Dissolved

Oxygen (DO) was found good in all eleven samples collected from Damodar river i.e. in the

range of 7.3 to 10.4mg/l. Highest DO was recorded in the river sample collected upstream of

Asansol. Chemical Oxygen Demand was recorded between the range of 5 – 30.96mg/l.

Biochemical Oxygen Demand (BOD) was observed in the range of 1.3 – 5.6mg/l.

Highest BOD was observed in the sample collected from river d/s of Andal, this may be due

to the fact the a lot of bathing, washing, sand recovery, open defecation activities are

undertaken in this region.

Figure 3-14: Physio-Chemical Properties of Damodar River Water Quality

BOD DO COD

35

S S S S S S S S S S S

Conc

. m

g/l



Bacteriological examination showed Total Coliform in the range of 1300 –

160,000MPN/100ml. Highest TC concentration was observed in samples collected from river

d/s and u/s of Andal and u/s of Durgapur. High concentration of 160,000MPN/100ml was

observed in samples collected from upstream of Andal and u/s of Durgapur as activit ies

like bathing, washing, fishing, burning of dead body and open defecation are carried out in

this region, thus deteriorating the river quality.

Figure 3-19: Bacteriological Examination Analysis of Surface Water Samples Conducted

By WBPCB

3.4.3 Primary Surface Water Quality Monitoring:

Surface water quality monitoring was conducted at five locations in April 2017.The surface

water monitoring locations details are mentioned below in Table 3.19. Damodar river was

monitored upstream, mid-stream and downstream. Village ponds near Kujoria village was also

monitored as a part of the surface water quality study of the area. However, the criterion for

sampling location selection was distance from anthropogenic sources and use of the surface

water body. The reason of selecting five locations in the block was to obtain information of

all the major surface water bodies present in the entire block area. Surface water monitor ing

results have been shown in Annexure XIV.

Table 3-17: Surface Water Sample Location Details (2017)

Station

Code

Sampling Location

Location details Distance from the site

SW-1 Damodar river at Barakar Upstream of Damodar river About …km from western part of Sector A

SW-2 Damodar river near Damdia

village

Midstream of Damodar river About 220m North of Sector B

SW 3

Damodar river near

Waria railway station

Downstream of

Damodar river

About 1km away from Sector B (S)

SW 4

Pond near Mangalpur/Kajuria

village

Village pond

Outside the boundary of Sector B

(approx.. 2.5km away from the southern

part of Sector B boundary)



SW 5 Nachan dam reservoir Reservoir Outside the boundary of Sector B. Approx.

610m south

Detailed results presented in Annexure XIV.

Photo 3-8: Surface water sampling

The surface water quality monitoring locations are shown in Figure 3.20



Figure 3-20: Surface water quality monitoring location near Sector A (2017)



Figure 3-15: Surface water quality monitoring location near Sector B (2017)



SURFACE QUALITY MONITORING CONDUCTED IN MAY -JUNE 2015

Surface water quality monitoring was conducted at five locations. Damodar river was

monitored upstream, mid-stream and downstream .Village ponds near Jhatidanga village was

also monitored as a part of the surface water quality study of the area. The surface water

monitoring locations details are mentioned below in Table 3.20

Photo 3-9: Surface water sampling of Damodar river

Table 3-20: Surface Water Sample Location Details (2015)

Station

Code

Sampling Location

Location details Distance from the site

SW-1 Near Egara Village Upstream of Damodar river Within Sector B (NW)

SW-2 Near Midnapur Village Midstream of Damodar river Within Sector B (S)

SW 3

Near Ramprasadpur

Village

Downstream of Damodar

river

About 400m away from Sector

B (S)

SW 4

Srirampurrai Village

Downstream of Damodar

river, when the Damodar

leaves the Sector B boundary

Outside the boundary of Sector

B (approx.. 400m away from the

southern part of Sector B

boundary)

SW 5 Near Jhatidanga Village Village pond Within Sector B of block (N)

Interpretation of Surface water quality

Five surface water bodies in Sector B of the block were monitored for their physiochemical and

bacteriological characteristics. It can be inferred from the results (Annexure XIV) that the

surface water samples taken from Damodar river particularly from u/s (1), m/s (1) and d/s (2)

show Dissolved Oxygen (DO) in the range of 4.0-5.8mg/l and Biological Oxygen Demand

(B.O.D) in the range of 2.5-3.0mg/l .The sample collected from village pond near Jhatidanga

village showed DO concentration as 4.5mg/l and a BOD of 3mg/l. The pH range monitored

in all five samples was found in the range of 7.2 – 8.1.



Figure 3-22: Dissolved Oxygen, Bod and Cod In Analyzed in Five Surface Water Samples

Bacteriological examination revealed total coliform in all five sample in the range of <2.0-

240MPN/100ml, with the lowest (<2.0MPN/100ml ) found in SW-4 and highest found in SW-

5. High total coliform was observed in SW5 i.e near Jhatidanga village which is near to many

thermal power stations operating in the area near Raniganj. The temperature of hot effluents

from thermal plants entering the surface water reduces the DO levels by increasing the

microbial activity.

Based on the monitoring results, it can be interpreted that the surface water bodies available in

the block viz. Damodar river and village ponds, it can be interpreted that it is neither suitable

for drinking nor for bathing or for any other purpose without any treatment. The surface water

conforms to Class C i.e. drinking water source after conventional treatment and disinfection.

It can be further inferred that surface water quality of Damodar river water is getting polluted

from various sources like domestic sewage (due to the high population) or industrial effluents

and garbage disposal or by other anthropogenic activity.

Besides, these it was found that the concentration of Sulphate, Phosphate, Nitrate, Chloride,

Phenolic Compounds, Fluoride, Iron, Copper and Manganese remained within their

permissible limit specified for Class C as per IS 2296, 1992 Max. Moreover, even heavy metal

analysis of Hexavalent Chromium, Zinc, Lead, Arsenic and Cyanide (Cr+6, Zn, Pb, As and CN)

were found within permissible limits.

Conc

. m

g/l



Figure 3-23: Physio-Chemical Characteristics of the Surface Water Samples Monitored

Calcium and Magnesium concentration was found in the range of 70.4 to 172.2mg/l and 34.6

to 109.8mg/l , respectively. The surface water monitoring locations have been shown in Figure

3.24

TDS mg/l Total Hardn ss Total lkalini

S S S S S

Surface water locations

Con

c. (m

g/l)



Figure 3-16: Surface Water Monitoring Location in the Block (Sector B) (2015)



3.4.4 Groundwater availability:

16The ground water resource of Burdwan district estimated jointly by Central Ground

Water Board (CGWB) and State Water Investigation Directorate (SWID), Govt. of West

Bengal report of Burdwan district is 333868ham (hectare meter). Net annual ground water

availability is recorded as 303295ham. The total existing ground water draft for all uses is

131900ham, however the ground water draft for irrigation and domestic and industrial water

supply is shown below:

Ground water draft

Ground water draft for irrigation 123679 ham

Ground water draft for domestic and

industrial water supply

8221 ham

In the district, the overall ground water development is 43.49%. The water allocated for

domestic and industrial water supply up to 25 yrs is 12187ham and the net ground water

availability for future irrigation development is 161807ham. Sector A and Sector B of the

Raniganj block is covered under nine blocks viz. Jamuria, Barabani, Salanpur, Kanksa,

Pandabeshwar, Kulti, Andal, Faridpur-Durgapur and Raniganj. According to the Groundwater

information booklet of Bardhaman or Burdwan district all blocks falls in “Safe Category” as

per ground water development perspective.

3.4.5 Hydrogeology

In major part of the Burdwan district, ground water occurs in thick unconsolidated Quatrnaries

and Tertiaries deposited under fluviatile environment; the sand and gravel in different

proportions of this formation constitute the main aquifers and they occur down to 295m bgl in

the central and eastern part of the district. Deeper aquifers occur under semi- confined to

confined condition.

Groundwater in the extreme northwestern small part of Salanpur block occupied by the

Archaean metamorphics occurs down to depth of about 82m bgl under both unconfined and

confined conditions down to 150.35m bgl. It mainly occurs under unconfined condition in the

dug well zone and under semi-confined to confined condition in the deeper horizons.

Water Levels: Depth to water level in pre-monsoon period (2006) varies from 1.43 to

19.03mbgl whereas that too post monsoon it ranges between 1.03 – 31.00m bgl.

Ground water quality in Burdwan district:

The exploration studies conducted by CGWB, West Bengal in blocks of Burdawan district show

electrical conductivity in Andal (up to 2300 µS/cm), Jamalpur (up to 2720 µS/cm), Jamuria

(up to 2400 µS/cm) and Raniganj (up to 3000 µS/cm). The chloride content in

16 District Groundwater Information Booklet, Central Ground Water Board, Eastern Region



Groundwater is low between the ranges of 11-386mg/l. The ground water is mainly alkaline,

total hardness varies in the range of 60-830mg/l. Higher concentration of hardness is

observed in western blocks viz. Andal, Barabani, Raniganj, Jamuria etc. Iron content

ranges from B.D.L to 1.00mg/l has been encountered in some blocks of Kalna –II

(max.3.91mg/l), Khandokash (max. 2.53mg/l) and Katwa II (max. 2.00mg/l)

3.4.6 Groundwater Quality Monitoring

In order to study the ground water quality in the block area, samples were collected from five

locations in Sector B of the block and analyzed in April 2017. The purpose of selection of

ground water monitoring locations was to cover the entire block size to get a proper

understanding of the water quality in the block area. The location details are presented in Table

3.21. The criteria of selection of ground water locations were based on the following:

1. Distance from anthropogenic sources that can interfere with the monitoring results. 2. Present use of ground water sources

Results of ground water sampling is given in Annexure XV

Table 3-18: Location of Ground Water Monitoring Stations (April 2017)

Station

Code Sampling

Location District Water level

depth (m) Source Current Use

GW-1 Hetadoba village Burdwan 40-50feet Dugwell Washing and bathing

GW-2 Patswara village Burdwan 300feet Tubewell Drinking

GW-3 Andal town Burdwan 50feet Tubewell Drinking / Washing

GW-4 Laudoha village Burdwan 60-70feet Open covered

well

Drinking / Washing

GW-5 Benachity village Burdwan 10-12 feet Dugwell Washing and bathing

Photo 3-10: Ground water sampling

The ground water quality monitoring locations are shown in Figure 3.25


Arcadis/10002910/ October’17 114 ONGC

Figure 3-17: Ground Water Monitoring Locations (2017)


Arcadis/10002910/

October’17 115

ONGC

GROUNDWATER QUALITY MONITORING IN 2015

Groundwater quality monitoring was conducted in April 2015 at five locations. The details of

the same are presented in Table 3.22

Table 3-19: Location of Ground Water Monitoring Stations

Station Code

Sampling Location

District Water level depth (m)

Source Current Use

GW-1 Shakradanga village Burdawan 61m Handpump Drinking / Washing

GW-2 Dubehuria village Burdawan 54.9m Handpump Drinking/ Washing

GW-3 Icchapur village Burdawan 45.8m Handpump Drinking / Washing

GW-4 Banshia village Burdawan 54.9m Handpump Drinking / Washing

GW-5 Amrai village Burdawan 61m Handpump Drinking / Washing

Results of ground water sampling is given in Annexure XV

Photo 3-11: Ground water monitoring in the block Photo 3-12: Ground water monitoring in the block

Location of groundwater monitoring stations is shown in Figure 3-26.



Figure 3-18: Ground Water Monitoring Locations (2015)



Interpretation of ground water quality results

Physio-chemical analysis of groundwater samples show Total Dissolved Solids (TDS) and

Total Hardness above the BIS 10500: 2012 acceptable limit of 500 mg/l and 200mg/l

respectively in three groundwater locations viz. GW1-Shakradanga village, GW2-Dubehuria

village and Icchapur village out of a total of five locations monitored. Alkalinity monitored

showed high concentration in GW1, GW2 and GW4 i.e above the BIS 10500: 2012 acceptable

limit of 200mg/l as per IS:10500-2012. Chloride was found high only in GW1 i.e. in

Shakradanga village (305mg/l) as per BIS 10500: 2012 acceptable limit of 200mg/l

Figure 3-19: Physio Chemical Properties of the Groundwater Samples Analyzed.

Although TDS is generally not considered as a primary pollutant, the principal application of

TDS in study of water quality is an indication of aesthetic characteristics of drinking water.

High TDS levels generally indicate hard water and high salinity, which is caused by the

presence of calcium, magnesium, potassium and sodium cations and bicarbonate, carbonate,

chloride, nitrate, and sulfate anions. Calcium was observed high in GW 1 (129mg/l) i.e. above

the acceptable limit of 75mg/l and Magnesium was found above the BIS 10500-2012

acceptable limit of 35mg/l in GW1 and GW3. The remaining samples were found well within

the limits prescribed by BIS 10500-2012, please refer Figure 3.27 and 3.28



Figure 3-20: Calcium and Magnesium Level in the Ground Water Samples Monitored

Overall, it is observed that the Total Coliform results for all ground water samples analyzed

shows Total coliform <2.0MPN/100ml. Low bacteriological contamination is due to the fact

that the groundwater table is found very low as 150-200ft bgl, hence the source of

bacteriological contamination is negligible.

Iron concentration was found high in three groundwater samples viz. GW1: Shakradanga

village (0.35mg/l), GW3: Icchapur village ( 1.33mg/l), and GW5:Amrai village (1.07mg/l) i.e.

well above the acceptable limit of 0.3mg/l as per BIS 10500-2012. Fluoride concentration was

found below the acceptable limit of 1mg/l in all five samples.

However, concentration of heavy metals viz. Cyanide, Hexavalent Chromium, Zinc, Cadmium,

Lead, Mercury, Boron and Arsenic were found well within the permissible limits of IS 10500-

2012 in all samples monitored. Focusing on the present trend of use of ground water in the

block area, it is observed that the groundwater is used for drinking, irrigation, washing, bathing

and other domestic purposes. Some villages also have piped water supply.

3.5 TRAFFIC VOLUMES

Traffic density was recorded in four locations. The traffic monitoring is carried out at major

junctions near and around the block. Monitoring was carried out once at each location for a

period of 24 hours continuously. T1 is located on the BDO, Durgapur to Kolkata Road Near

(NH-2)

Location T2 was identified near Waria village near steel thermal power plant station on the

National Highway passing through the area. (NH2). Location T3 is on the main road near

Janardan Shayer village. Location T4 is located on the Jamuria to Raniganj Connecting Road

near railway trunk. Location of traffic monitoring points is given in Figure 3.29. Traffic survey

results are tabulated and described in Annexure XVI

Conc

. (m

g/l)

Cal ium

n s iu

129

20

GW 1

GW2

GW3

GW4

2.1

GW5



Interpretation:

From the traffic analysis at four monitored locations, it can be inferred the maximum number

of two, three, four wheelers as well as high motor vehicle movement is observed during

morning hours i.e. between 9:00 am- 12:00pm. Maximum number of Light motor vehicular

movement (containing four wheelers and small trucks) on an average is recorded in the

afternoon i.e. 1:00pm – 4:00pm. On an average highest vehicular movement was observed at

T1 and T2 as these are located on National Highway NH2 and are near two steel thermal power

stations, which is another reason of the high traffic congestion in these areas. Heavy motor

vehicles were observed highest at T1.

Rational for selecting monitoring locations has been described in Annexure XXVI



Figure 3-21: Traffic Monitoring Locations in the Block (Sector A and B)



3.6 BIOLOGICAL ENVIRONMENT

The forests in Burdwan and Bankura district fall under Group 5B : Northern Tropical Dry

Deciduous Forests. The tree species found in the region include Sal (Shorea robusta), Peasal

(Pterocarpus marsupium), Kend (Diospyros melanoxylon), Mahul (Madhuka latifolia), Kusum

(Schleichera trijuga), Karam (Adina cordifolia), Asan (Terminalia tomentosa), Bahera

(T.belerica), Rahara (Soyamida febrifuga), Dhaw (Anogeissus latifolia). The forest area falling

under Burdwan and Bankura district has been summarized below in Table 3.24

Table 3-24: Forest In Burdwan and Bankura District

S.N District Geographic

al Area

(Sq. km.)

Recorded

Forest

Area

% age of

Recorded

Forest

Area

Reserved Protected Unclassed

State

Forest

and

Others

Total

Area

1

Burdwa

n

6882

1,482

21.53%

3

192

82

277

2 Bankura 7,024 277 3.94% 80 1,311 91 1,482

Ecological investigations were carried out within the study area for meeting the following

objectives:

To establish the present status of ecological conditions (both terrestrial and aquatic) in the

block area;

To study the existing anthropogenic stresses on the prevailing ecosystem;

To predict the impacts of the proposed development on the existing local and regional

environment; and

To formulate mitigatory options and a sustainable Environmental Management Plan (EMP).

3.6.1 Methodology

Study Area

The study area for ecological surveys is considered taking the entire area of CBM Block located

in the following taluka/block viz. Durgapur- Fatehpur, Raniganj, Andal, Jamuria, Barbani of

Burdwan district and Meja taluka of Bakura district.

Desktop Review and Reconnaissance Survey

A desktop review (management plan and other published document etc.) was conducted to

determine the forest area (Toposheet and Satellite imagery), vegetation type (Champion and

Seth, 1962), floral and faunal assemblage in the study area. A site reconnaissance visit was

conducted in April, 2015 to identify different ecological habitats, and also to identify the

targeted study area for baseline survey.

Baseline Survey

Baseline survey was carried out to determine the existing ecological conditions and was



designed to fill any data gaps, and to facilitate an adequate assessment of the project’s impacts

upon ecology and the development of appropriate mitigation measures. Baseline survey was

conducted during April, 2015 for habitat survey, flora & faunal assemblage, in the study area.

Baseline survey has two parts-

a) Secondary data collection and

b) Primary Survey.

Secondary Data Collection

Secondary baseline data regarding sensitive ecological habitat (National Park, Sanctuary,

Ecological Sensitive Area, Migratory Corridor, etc.), flora & fauna in the study area, forest

cover was collected from Forest Department’s website; Management Plan of protected areas

and other publish and unpublished documents. Stakeholder consultations (Forest Department,

local villagers etc.) were also carried out to understand the major flora & fauna in the study

area, pressure on forest resources, presence of any Schedule I species.

Primary Survey

Primary survey was carried out in the targeted block area to study the habitat (terrestrial and

aquatic), flora and faunal survey (terrestrial and aquatic). Walkthrough survey method was

employed for conducting the primary surveys for vegetation in the area. Walkthrough survey

method was also employed for studying birds, mammals, reptiles etc.

Habitat Assessment

The information of prevailing baseline in the block area is important because project related activities might lead to loss of the ecological resources, if existing. The proposed CBM block

lies within the biogeographic province-7B, Lower Gangetic Plain, (Rodgers, Panwar & Mathur, 2002). The overall land use pattern is shown in Photo 3.14



Photo 3.14 Land use pattern of the Block area

The proposed CBM block covers two Protected Forest under Durgapur Forest Division and Bankura Forest Division. Other than two Protected Forests, no other ecological sensitivity is

located in the allotted CBM block. The protected map of West Bengal is shown in Figure. 3.30

Figure 3-30: Protected Forest map of West Bengal



The vegetation of the forested areas of the study area (all over the proposed CBM block area)

found to be Northern Tropical Dry Deciduous Forest type (subgroup 5-B of Champion and

Seth, 1968). It is also confirmed from the Forest department senior officials that mostly the

forests of Bankura, Purulia, Midnapur, Birbhum, Burdwan districts all show this type of

vegetation composition.

The top-storey trees form a nearly continuous 15–20 m high canopy, underlain by a

discontinuous lower storey of trees, a thin shrub layer and a seasonal herb layer which includes

several grasses. In the rainy season the forest is reported to become lush green due to the

presence of fully expanded leaves of trees and shrubs and a dense herbaceous layer. The

summer aspect is pale and parched because of the leafless trees and shrubs and a dried-up herb

layer.

3.6.2 Terrestrial Ecosystem

Floral Diversity:

The proposed CBM block lies within the biogeographic province-7B, Lower Gangetic Plain,

(Rodgers, Panwar & Mathur, 2002). The biogeographic province map is shown in Figure 4.26.

The vegetation of the forest areas falling in the block is categorized as Northern Tropical Dry

Deciduous Forest type (subgroup 5-B of Champion and Seth, 1968). The top-storey trees

form a nearly continuous 15–20 m high canopy, underlain by a discontinuous lower storey of

trees, a thin shrub layer and a seasonal herb layer which includes several grasses.

In the rainy season the forest is reported to become lush green due to the presence of fully

expanded leaves of trees and shrubs and a dense herbaceous layer. The summer aspect is pale

and parched because of the leafless trees and shrubs and a dried-up herb layer.

The proposed CBM block covers two Protected Forest viz. Ukhra Protected Forest under

Durgapur Forest Division and Gangajalghati under Bankura Forest Division. No other

ecological sensitivity is located in the CBM block. During the site visit, it was observed that

major portion of the block area is covered under agricultural land. The ecological sensitivity

map below Figure 3.31 shows the location of proposed 80 development wells along with the

location of GCS and Pilot wells fall outside the forest area.

.



Figure 3-22: Ecological Sensitivity Map Showing Location of Development Wells, GCS And Pilot Wells



Phytosociological Analysis of Ephemerals in the study area

An effort was also made to record the presence of ephemerals in the study area grown in

agricultural lands, community land, along the roadside, along the pond side/waterbodies, in the

village and urban woodlot etc. A total of 32 different species were recorded from the 12 transect

survey and phytosociological analysis was undertaken to find out the IVI, Shannon-Wiener

Diversity Index and Simpson's Diversity Index. To enumerate the Important Value Index (IVI)

of the exclusive ephemeral species recorded from the study area, Relative Frequency; Relative

Abundance; Relative Density were calculated. The larger the importance value, the more

dominant a species in that particular community.

Table 3-25: List of Ephemeral species recorded in study area

S.N Plant species Family Habit

1 Amaranthus viridis Amaranthaceae H

2 Amaranthus spinosus Amaranthaceae H

3 Calotropis gigantea Apocynaceae S

4 Eclipta alba Asteracea H

5 Calotropis procera Apocynaceae S

6 Cassia obtusifolia Fabaceae S

7 Cassia tora Fabaceae S

8 Cleome viscosa Capparidaceae H

9 Croton bonplandianus Euphorbiaceae H

10 Clerodendrum viscosum Lamiaceae S

11 Cynodon dactylon Poaceae G

12 Datura metel Solanaceae H

13 Desmostachya bipinnata Poaceae G

14 Desmodium gangeticum Fabaceae H

15 Eupatorium odoratum Asteracea S

16 Euphorbia hirta Euphorbiaceae H

17 Ipomoea carnea Convulvulaceae H

18 Gomphrena celosioides Amaranthaceae H

19 Jatropha gossypiifolia Euphorbiaceae S

20 Lantana camara Verbenanceae S

21 Leucas aspera Lamiaceae H

22 Ocimum canescens Apocynaceae H

23 Pergularia daemia Asclepiadaceae Shrubs ( vine)

24 Saccharum spontaneum Poaceae G

25 Sida acuta Fabaceae H

26 Solanum nigrum Solanaceae H

27 Tephrosia purpurea Fabaceae H

28 Xanthium strumarium Asteraceae H

29 Vitex negundo Lamiaceae S



30 Tridax procumbens Asteraceae H

31 Tribulus terrestris Zygophyllaceae H

32 Cnicus wallichii Asteraceae H

Figure 3-23: Percentage of different habitats of ephemeral species

From the analysis, it was found that 61% of herbs, 29% of shrubs and 10% of grasses were

recorded. In terms of IVI, Euphorbia hirta was having the highest IVI of 17.9 followed by

Ocimum canescens 15.1, Clerodendrum viscosum with 14.2 and both Saccharum spontaneum

and Cassia obtusifolia with 13.2 each.

The Shannon-Wiener Index (H) provides the status of how evenly the species are distributed

as wells as it gives clear picture of the abundance of the species in a community. The higher

“H” values, the more diverse the communities are. The “H” value was found to be 2.5. Many

researchers have opined that the “H” value of 3 or more than that considered to be well

diversified. In this case as the “h” values were less than 3, we can consider that the diversity of

ephemeral species of the study area was moderate.

Table 3-26: Shanon Weiner index of Ephemeral species recorded in study area

S.N Plant species RF RA RD IVI

1 Amaranthus viridis 5.8 1.7 1.5 9.1

2 Amaranthus spinosus 5.0 1.9 1.3 8.2

3 Calotropis gigantea 2.5 1.7 1.5 5.8

4 Eclipta alba 1.7 2.6 2.3 6.5

5 Calotropis procera 4.2 2.4 2.1 8.6

6 Cassia obtusifolia 2.5 4.8 5.9 13.2

7 Cassia tora 4.2 3.6 3.8 11.6

8 Cleome viscosa 2.5 3.1 3.2 8.8

9 Croton bonplandianus 1.7 1.9 1.3 4.9

10 Clerodendrum viscosum 4.2 4.9 5.1 14.2

shrub29%

Herb61%

Grass10%



11 Cynodon dactylon 2.5 3.7 4.6 10.8

12 Datura metel 1.7 1.5 1.3 4.5

13 Desmostachya bipinnata 5.0 2.0 2.1 9.1

14 Desmodium gangeticum 1.7 2.4 2.1 6.1

15 Eupatorium odoratum 0.8 3.8 4.0 8.6

16 Euphorbia hirta 5.8 5.4 6.7 17.9

17 ipomoea carnea 3.3 2.7 1.9 7.9

18 Gomphrena celosioides 2.5 2.3 2.5 7.3

19 Jatropha gossypiifolia 1.7 3.2 1.7 6.6

20 Lantana camara 1.7 4.9 3.4 10.0

21 Leucas aspera 3.3 3.7 4.6 11.6

22 Ocimum canescens 2.5 6.1 6.5 15.1

23 Pergularia daemia 5.0 2.6 3.2 10.9

24 Saccharum spontaneum 6.7 2.9 3.6 13.2

25 Sida acuta 4.2 3.2 2.9 10.3

26 Solanum nigrum 3.3 1.8 1.9 7.0

27 Tephrosia purpurea 3.3 4.5 4.8 12.6

28 Xanthium strumarium 2.5 3.4 4.2 10.1

29 Vitex negundo 2.5 2.9 3.0 8.4

30 Tridax procumbens 1.7 3.4 3.6 8.7

31 Tribulus terrestris 1.7 2.2 1.1 5.0

32 Cnicus wallichii 2.5 2.6 2.3 7.4

Shannon Weiner Index- “H”= 2.5.

Forest Cover: The two forest covers as per details given in Table 3.27 are located in the block

area

Table 3-20: Locations of Ecological Sampling

Name of The Forest Forest

Division Name of the

Locality Geographical

Coordinates Tilabani Protected Forest

(Ukhra Forest Range)

Durgapur FD

Jhanjhara Village

23.65750N; 87.2832110 E

Gangajalghati

PF (Gangajalghati Range)

Bankura

Near Mejia

23.4344410N, 87.1065270E



Photo 3-1: Gangajalghati Protected Forest

Tilabani Protected Forest

Tilabani Protected Forest (Ukhra Forest Range) comes under the Durgapur Forest Division is

located in NE direction of the Sector B of the CBM block. The forest was found to be a

moderately vegetated forest patch with predominantly natural sal trees. Other major associated

species comprised such as Pterocarpus marsupium, Diospyros melanoxylon, Butea

monosperma, Bombax ceiba, Eucalyptus globulus etc.Efforts were made to analyse the phyto-

sociological statistics on the tree species found in the forest area. The analysis of ground cover

was not calculated. As far as the phyto-sociological analysis, the details are presented in the

Table 4.23. The Important Value Index (IVI) of sal was found to be highest with a value of

95.38 followed by Butea monosperma with 38.09 and Eucalyptus globulus with 32.04. It was

learnt from the forest beat officer that the survival rate of sal trees through gap filling in this

forest is very minimal and hence, to increase the forest cover, many other associated species

with a better growth rate are being planted and hence the introduced species like Eucalyptus

has a good density as well as higher IVI value.

Table 3-21: Phyto- Sociological Analysis of Tree Species in Tilabani Protected Forest

Tree Species

Relative

Frequency Relative

Abundance Relative

Density Important Value

Index (IVI)

Shorea robusta 11.86 39.8 43.8 95.38

Pterocarpus marsupium 10.17 4.0 3.8 18.01

Diospyros melanoxylon 8.47 6.7 5.3 20.48

Madhuca latifolia 6.78 5.4 3.4 15.54

Terminalia belerica 5.08 6.3 3.0 14.32

Soyamida febrifuga 10.17 5.4 5.1 20.62

Anogeissus latifolia 11.86 4.8 5.3 21.95

Eucalyptus globulus 11.86 9.6 10.6 32.04

Butea monosperma 11.86 12.5 13.7 38.09

Bombax ceiba 11.86 5.6 6.1 23.57

Gangajalghati Protected Forest

Gangajalghati Protected Forest falls under the Bankura Forest Division and is located in NE

direction of Sector B of the CBM block. The forest was found to be moderately dense forest

patch in comparision to Ukhra protected forest. It is also found to be predominantly a natural



sal. Other major associated species comprised of Terminalia arjuna, Terminalia tomentosa,

Pterocarpus marsupium, Diospyros melanoxylon, Butea monosperma, Bombax ceiba, Acacia

nilotica , Eucalyptus globulus etc. The details of the phyto-scoiological analysis is presented

in Table 4.24 . The IVI of sal was found to be highest with a value of 74.6 followed by Butea

monosperma with 32.7, Terminalia arjuna with 27.1 and Diospyros melanoxylon with 26.7.

Table 3-22: Phyto- Sociological Analysis of Tree Species of Gangajalghati Protected Forest

Tree Species

Relative

Frequency

Relative

Abundance

Relative

Density

Important

Value Index

(IVI)

Shorea robusta 11.27 28.63 35 74.6

Pterocarpus marsupium 5.63 4.26 3 12.5

Diospyros melanoxylon 8.45 9.54 9 26.7

Madhuca latifolia 4.23 1.55 1 6.5

Schleichera trijuga 5.63 2.32 11 19.2

Adina cordifolia 4.23 6.71 3 14.0

Terminalia tomentosa 4.23 2.06 1 7.2

Terminalia belerica 5.63 4.13 2 11.6

Soyamida febrifuga 5.63 4.64 3 13.1

Anogeissus latifolia 5.63 3.87 2 11.8

Eucalyptus globulus 8.45 6.71 6 21.3

Butea monosperma 11.27 9.67 12 32.7

Bombax ceiba 5.63 3.09 2 10.6

Acacia nilotica 4.23 5.67 3 12.5

Terninalia arjuna 11.27 7.16 9 27.1

It was known from the beat officer that about a herd of about 100 elephants reside nearby forest

areas and keep moving to the forested areas of West Bengal and Odisha. They keep on invade

the croplands of nearby villages many a times.

Village/Urban Woodlot: During the survey, it was observed that a few villages and urban

areas have woodlots developed by either Village Panchayat Samiti or Industrial units/collieries



(coal mining units). Village woodlots have mixed plantations of Mango, Pipal, Arjuna, Mahua,

Subabul, Acacia and Neem whereas the urban/peri-urban set up woodlots have mostly Acacia

auriculiformis (Sunajhuri) and Eucalyptus sps.

Road side plantation

Trees are noticed along village road and state highway connecting to the site. Thick lustrous

leaves with dense canopy leaning over the road were commonly noticed. These trees provide

foraging, nesting and movement corridor for birds and small mammals. Higher frequency of

Aam (Mangifera indica), Shisham (Dalbergia sissoo), Neem (Azadirachta indica), Kala sirish

(Albizzia lebback), Bakain (Melia azaderach), etc. are recorded.

The list of all the vascular plants (other than the tree species recorded from these two Protected

Forests) are given in Annexure XVII

Regional ecological resources utilization analysis

The principal crops are Rice, Wheat, Jowar and some varieties of coarse millet. Villagers

mostly depend on coal-mud mixed small balls to meet their fuel energy for cooking and heating

purposes. Besides, some of the villagers also depend on the surrounding open scattered scrubs

and other forested areas for fuel wood and fodder need. Excessive removal of grasses, sedges,

and herbs/shrubs is common in the area. Rampant gazing and browsing was observed in entire

study area.

Faunal Diversity

Rare and endangered plant species: In the study area, no rare and endangered species were

found during the survey. Furthermore, there was no report of the previous existence of any

endangered plant species.

Fauna

Primary Faunal survey was carried out in and around the forest areas. Besides, dialogue with

local villagers and forest officials were also made to obtain more information on the presence

of wildlife of the area.

Mammals

During the primary survey, other than common mongoose, no other wild animal was directly

observed. Dialogue with the beat officer from Gangajalghati Protected Forest office could

confirm the presence of a herds of few elephants and wild boar and Jackals in the nearby

forested areas. It was also learnt from him that the establishment of Lafarge cement factory and

Mejia Thermal Power Station has considerably changed the forest cover as well as foraging

habitats for the wild animals of this area.

Avifauna

A walkthrough survey was made to record the bird species found in the block area. The list of

recorded bird species is given in Table 3.28



Table 3-23: List of Common Avifauna Recorded in the Block Area

S.N Scientific Name Common Name Local

Status

Study

Area

WPA

1972

Schedule

1 Acridotheres tristis Common Myna A + IV

2 Columba livia Rock Pigeon C + IV

3 Copsychus saularis Magpie Robin S + IV

4 Corvus splendens House Crow A + V

5 Cuculus canorus Cuckoo C + IV

6 Dicrurous adsimilis Drongo A + IV

7 Eudynamys scolopacea Koel C + IV

8 Merops orientalis Green Bee Eater C + IV

9 Milvus migrans Black Kite C + I

10 Passer domesticus House Sparrow A + IV

11 Pycnonotus cafer Red vented Bulbul A + IV

12 Streptopelia chinensis Spotted Dove A + IV

13 Sturnus contra Pied Myna C + IV

14 Corcias benghalensis Indian roller S + IV

15 Bubulcus ibis Cattle Egret S + IV

16 Ardeola grayii Pond Heron S + IV

17 Vanellus indicus Red wattled lapwing C + IV

18 Centropus sinensis Greater Coucal C + IV

19 Apus affinis House swift C + Not yet

scheduled

20 Alcedo atthis Common king fisher C + IV

21 Turdoides striatus Jungle Babbler A + IV

22 Lanius collurio Red-backed shrike S + IV

23 Acridotheres fuscus Jungle Myna C + IV

24 Microcarbo niger Little Cormorant C + IV

[A= Abundant, C = Common, S = Sporadic] , [+= Recorded ]

Reptiles

Garden lizards and gecko were found within the extensive growth of bushes. Although no

information on the reptiles are described in the Forest Working Plan, but dialogue with the

local villagers do confirm the presence of poisonous , non-poisonous snakes and other reptilian

species in this region. These include the cobra, common Krait, Russell’s viper, monitor lizard.

The agriculture field in the study area provides an ideal habitat for many snakes and other

reptiles.

Rare and Endangered Animal Species

None of the animals observed in the study area are said to be belonging to the endangered, rare

or endemic categories. There were no reports of such categories of animals in the entire survey

area in the recent years.

Common Fishes: Damodar and Ajay rivers flow through the CBM blocks (A and B). Many

barrages built in the upstream of Damodar substantially reduce the flow in the river. The field

visit was made during the early summer and the river has a minimal water flow during this

period. Sand mining from Damodar was observed at many places. Some of the local villagers



reside the banks of Damodar, draw water from the river to cultivate seasonal vegetables. A few

fishermen were also interviewed by the team to obtain information on the fishes of these rivers.

Galda chingdi (Giant River Prawn) is the most important species of Damodar River which has

a good commercial significance. The other fish species which are largely caught by the local

fishermen are tengra, boal, aar and galda. The population of fishes such as Rohu and Catla are

reported is very less in Damodar river as per our interview with the local fishermen. Tengra

fish is found throughout the year in this river. But the best of catch of all fishes occurs during

the month of April till August. Fishermen avoid fishing during September to November.

Rare and Endangered Aquatic Plants/ Animal species

Other than Wallago attu (boal) which is considered as Near Threatened (and its trend is

decreasing) by IUCN, there is no rare, endangered fish species recorded from Damodar.

Aquatic Biodiversity

Plankton and Benthos

The river Damodar is one of the prominent tributaries of river Ganga. It originates at the hills

of Palamau district in Bihar. Damodar is a rain fed torrential river. Nearly 70% of river course

is in the valley. The excessively high rate of sedimentation is fast reducing the carrying capacity

of the river. The river bed up to upper deltaic zone (Burdwan town) is already covered with

thick layer of sand with the formation of frequent sand dunes (Banerjee et al, 1998, The River

Damodar and its Environment, CICFRI, pp46).

CICFRI scientists/investigators led by Dr. R.K Banerjee from Barrackpore had conducted a

study to analyze the Environment of river Damodar and published the report in March 1998.

They had divided the stretch into 4 zones. Durgapur zone that covers Raniganj area was placed

in zone -III. Their findings showed that, with the variation in seasons and changes in ecological

condition distinct dominance of one group of plankton over the other was noted. Plankton, both

in qualitative and quantitative terms often fail to behave as pollution indicator index, because

of fast flowing ecosystem with innumerable inlets and for not having any locomotion of their

own. However, plankton estimation over the time and space might depict an overall biologica l

comparability of ecosystem.

As mentioned above, the current project area comes under Zone-III as placed by the

investigators from CICFRI, Barackpore. From their findings, the result from Zone-4 showed

that the species diversity as well as the population density of the planktonic flora and fauna

gradually declined in downstream of Durgapur barrage.

Their results showed that about 27 species were recorded from 5 groups from both monsoon

and winter survey. The group which the species belonged were Chlorophyceae, Cynaphyceae,

Bacillariophyceae, Rotifers and Protozoa. The species recorded were Eudorina, Oedogonium,

Ulothrix, Desmidium, Spirogyra, Pediastrum, Oscillatoria, Navicula, Melosira, Cymbella,

keratella etc. The research report stated that the large stretch of Damodar river bed was

blanketed with oil mixed fly ashthat didn’t support the proposer growth and multiplication of

wide variety of benthic flora and fauna.



The population density fluctuated between 30µ/m2 and 600 µ/m2. The dominance of

oligochaetes and gastropods were recorded with a lower densities. The higher density of

gastropods were recorded near the outfall of Nunia khal. In another study conducted by Smt

Ruma Banerjee on Hydrobiological status, Thematic zonations and Ecomonitoring of river

Damodar from Barakar to Burdwan for her PhD work from 2008-2011. The synopsis paper of

her PhD work available in public domain showed that a total; number of 39 species of

phytoplankton were recorded from 16 sampling locations. Out of which, 19 species belonged

to green algae (Chlorophyceae), 12 species belonged to bacillariophyceae, 7 species belonged

to Cyanophyceae. The low species richness of phytoplankton were recorded during the rainy

seasons whereas the higher values were recorded in other seasons.

In terms of zooplankton, the study showed that a total of 14 zooplankton species were recorded

comprising 6 species of rotifers, 4 copepods, 3 cladocerans and one species of protozoa.

Zooplankton constituted the bulk range with the dominance of Brachionus sp., Keratella sp.,

Diaptomus sp.,Cyclops sp.,Nauplius sp.,Melosira sp., Daphnia sp etc

3.7 SOCIO-ECONOMIC ENVIRONMENT

The socio-economic study focuses on demographic structure, economic activity, education and

literacy profile of the area. Based on data compiled in this section, the EIA will later, attempt

to predict and evaluate future impacts of the project on people of the surrounding area, their

physical and psychological health and well-being, economic facilities, heritage and culture,

lifestyle and other value systems. The assessment attempts to predict and evaluate future

impacts of project upon people, their physical and psychological health and well-being, their

economic facilities, cultural heritage, lifestyle and other value system and also helped in

prioritizing ONGC’s commitment towards the CSR initiatives. Inputs from the social

assessment into the design phase facilitated in:

Tracking potential adverse effects over different time frames and different activities

Reviewing options to eliminate such negative impacts through design changes or

mitigate them through specific social protection or mitigation measures

Reviewing options to extend or enhance benefits for the population in the vicinity of

the project site.

This section deals with the baseline socio-economic environment of the Raniganj CBM block

in the State of West Bengal with respect to ONGC’s proposed development well drilling

activity for CBM exploration. The project will require around 2-3 operating months for drilling

activity while exploration of CBM will continue for approximately 20-25 years. The following

section discusses the methodology used for the socio-economic assessment. The subsequent

sections discuss the baseline profile of the district and the villages within the study area. The

information provided has been primarily derived from the secondary sources (Census of

India). In addition primary information was also collected during the discussions at the villages

with the local community members. The village-wise secondary data (obtained from Census,

2011) has been taken into consideration for analysing the socio-economic profile for the



Raniganj CBM block. The block comprises of two sectors viz. Sector A and Sector B . Sector

A has a total of 98 villages, the list of the villages falling within Sector A has been shown

below in Table 4.27

Table 3-24: List of Villages Falling in Sector A

S.N District Villages S.N Villages S.N Villages 1

BURDWAN

Barakar 36 Napara 71 Kaithi

2 Punur 37 Katidhura 72 Baijantipur

3 Kulti 38 Nuri 73 Barul

4 Shiptir 39 Chinchuriya 74 Kumardiha

5 Dhawra 40 Murchadar 75 Shankhari

6 Kumarbandh 41 Madanmohanpur 76 Patharchur

7 Gangutiya 42 Puchra 77 Hijalgara

8 Sodepur 43 Katanidangal 78 Hormadanga

9 Sanktoriya 44 Kelejora 79 Nimaidanga

10 Dishergarh 45 Rampur 80 Babudanga

11 Mahishmura 46 Shiladhura 81 Sekpur

12 Melekola 47 Jhapradhura 82 Jamsol

13 Chalbalpur 48 Barabani 83 Chak Tulsi

14 Sutidanga 49 Bhaskajuri 84 Kumar Jamsol

15 Kultara 50 Bhanowara 85 Bijaynagar

16 Sitarampur 51 Sindrichak 86 Dhasna

17 Niyamatpur 52 Gopalbald 87 Bahadurpur

18 Lachhipur 53 Naykapur 88 Chakdola

19 Thenkadanga 54 Madantoi 89 Dhasal

20 Janardan shayer 55 Domahani 90 Krishnanagar

21 Ethora 56 Domahani 91 Dobrana

22 Angeriya 57 Taradanga 92 Chichurla



23 Nakti Kanyapur 58 Charanpur 93 Bajari

24 Sudi 59 Shyamsundarpur 94 Dahuka

25 Marichtala 60 Jitudaura 95 Haripur

26 Gopalpur 61 Jhiladanga 96 Kumarkhola

27 Sarakai 62 Shibpur 97 Terminus

28 Panchgachhia 63 Sattar 98 Bhaluka

29 Raghunathpur 64 Taltar 30 Ramjibanpur 65 Jambad 31 Raniganja 66 Bagandhoura 32 Raghunath Chak 67 Shirishdanga 33 Rebatijubati 68 Hadmadhaura 34 Baradanga 69 Nandi 35 Paniphala 70 Jamuria

Sector B of the block consists of a total of 56 villages and the list of the villages has been shown

below in Table 4.28

Table 3-25: List of Villages Falling in Sector B of the Block

S.N Villages S.N Villages S.N Villages

BURDWAN DISTRICT

1 Raniganj 21 Andal 41 Patsoora

2 Egara 22 Pubra 42 Arati

3 Narankuri 23 Madanpur 43 Kururla

4 Sahebganj 24 Baska 44 Pahari

5 Raghunath 25 Bhaluksundha 45 Sarpi

6 Ballavpur 26 Bhadur 46 Jhanjra

7 Napur 27 Dignala 47 Banshgara

8 Belunia 28 Ramprasadpur 48 Hetedoba

9 Fatakduar 29 Kutirdariga 49 Bansia

10 Siarsol 30 Shrirampur 50 Jamgara

11 Panjabimor 31 Tamla 12 Ranaisarif 32 Amrai 13 Jhatidanga 33 Kanrsar 14 Ratibandh 34 Dubchururla 15 Bandhdanga 35 Gopalmath 16 Goaipara 36 Waria 17 Baktar Nagar 37 Nutanbazar 18 Nutan Madanpur 38 Amlauka 19 Palasban 39 Banguri 20 Sakradanga 40 Ichhapur

BANKURA DISTRICT

51 Lakshmanbandi 52 Barduari 53 Ardhagram

54 Gopalpur 55 Parbatipur

56 Shyampur



Public Consultation: Primary information on block, socio-economic infrastructure, is

gathered through informal discussion with locals. A team of environment and social scientists

along with a ONGC representative made a visit to block area falling under Burdwan and

Bankura district to collect information from primary sources. The primary survey exercise was

carried out to collect information on the economic activities, agricultural practices, social

infrastructure and community view and aspirations from the project/activity. Primary survey

was carried out in Arti, Patwawra, Ichapur, Amrai, Andal, Tamla, Bansi, Dupchuria, Egra,

Nurpur, Bansra, Ballavpur, Bidhanbag, Ratibati, Kallpahari, Hijolgora, Siddhapur, Dhomani,

Bhanobara, Kalajora, Kulti, Mejia, Parbatipur, Shyampur-1, Shyampur-2, Gopal Ganj 1,

Gopalpur, Dhandora, Khyarbani and Dhandora Mejia. During the public consultation it was

found that the villagers are aware of the direct and indirect benefits due to the project activit ies.

The assessment facilitated an understanding of the needs, demands, preferences, capacities and

constraints of the people in the vicinity of the project operation. It was undertaken primarily to

enhance the understanding of other relevant factors such as social organizations and networks,

livelihood patterns, social infrastructure etc.

The summary of the public consultation conducted in the villages surveyed are given below in

Annexure XXVII and the minutes of meeting discussed in Annexure XVIII

Public and Stakeholder Consultation

The social team of Arcadis India Pvt. Ltd. (Formerly known as Senes Consultants

India Pvt. Ltd.) conducted public consultations in the block area villages during 20th

April – 25thApril’15 and informed the locals about the upcoming project and

obtained their opinion w.r.t to the same. The locals inquired about the project risks

as well as benefits, the team updated the locals of the environment mitiga t ion

measures which would be adopted during construction and operation phase and also

about the direct and indirect benefits viz. improvement in physical infrastructure,

future economy as well as strengthening of employment potential.

Consultations with key stakeholders are a continuous process that was carried all

through the EIA process. The stakeholder analysis was followed by discussions with

some of the key stakeholders to identify their dependence on the affected or shared

resources, the extent of impact on them and measure, which will be undertaken

to mitigate these impacts. Issues like land and resource damage, social disturbance,

severance and increased congestion, noise and air pollution, employment

opportunities, need for development of basic infrastructure, safe drinking water,

sanitation facilities in the surrounding villages were discussed during the

consultations so that they can be adequately addressed through the environment

management plans. The consultations also helped in developing preliminary

understanding of the requirement of social development initiatives, which are

required in the project village and may be undertaken as part of the ONGC’s CSR

activity.



The pictures below (Photo 4-12 to 4-19) show the public consultation conducted in a number

of villages of Burdwan and Bankura district.

Photo 3-2: Arti village, public consultation (Burdwan

district) Photo 3-3: Ichhapur village, public

consultation (Burdwan district)

Photo 3-4: Mejia village, public consultation

(Bankura district) Photo 3-5: Gopalmath village, public

consultation (Burdwan district)

Photo 3-6: Domahani village, public consultation (Burdwan district)

Photo 3-7: Sidhpur village, public consultation (Burdwan district)

Photo 3-8: Bansia village, public consultation

(Burdwan district) Photo 3-9: Ardhagram village, public

consultation (Bankura district)



3.7.1 Methodology

The social assessment was primarily based on the analysis of the secondary data obtained from

the census survey 2011 and Community consultations. Following tools were used for gathering

information and validating secondary data after considering nature of project operation and

understanding the demographic characteristic of the area:

Study Area Demarcation

The local communities who would primarily be affected were identified based on the location

of the core holes and pilot wells previously drilled by ONGC and also randomly across the

entire block (as the initially drilled wells are spread over a long tract of inhabited/ industrial ized

area in both sectors) with a focus on Sector B area villages as the prospects of CBM potential

has been found high in this particular sector. For further assessment of socioeconomic issues

and impacts on different stakeholders, detailed consultations with the community were planned

in these villages. The discussions focused on the issues of population/demography, education

profile, medical facilities and amenities like drinking water, transport and communication and

also on primary and secondary occupation of the villagers.

Community Consultations

Consultations with community are a continuous process that was carried in the EIA process

and would be continued during the construction and operation phases of the project. Issues like

land and resource damage, social disturbance, severance and increased congestion, noise and

air pollution, employment opportunities, need for development of basic infrastructure, safe

drinking water, sanitation facilities in the villages were discussed during the consultations so

that they can be adequately addressed through the environment management plans. The

consultations also helped in developing preliminary understanding of the requirement of social

development initiatives, which are required in the project village and may be undertaken as

part of the ONGC’s CSR activity.

The section below gives a clear picture of the socio economic status of the 27 study area

villages falling under two districts viz. Burdwan and Bankura (Table 4.29). These comprise a

list of villages where primary consultation has been undertaken, proximity from the previously

drilled wells and random selection in order to cover the entire block area.

Table 3-26: List of Study Area Villages

S. N District Block Village

1

Ondal Andal

2 Ondal Tamla

3 Raniganj Egara

4 Raniganj Ballavpur

5 Raniganj Napur

6 Raniganj Banshra

7 Raniganj Ratibati

8 Raniganj Jemari

9 Jamuria Sidhpur



S. N District Block Village

10 BURDWAN Faridpur Durgapur Arati

11 Kalna - II Kulti

12 Kalna - II Shrirampur

13 Ketugram - I Ichhapur

14 Faridpur Durgapur Banshia

15 Jamuria Hijalgora

16 Barabani Domohani

17 Barabani Kelejora

18 Salanpur Ethora

19 Raniganj Andal(Gram) (CT)

20

BANKURA

Mejhia

Gopalpur

21 Parbatipur

22 Dhandora

23 Shyampur

24 Shyamapur

25 Khaerbani

26 Mejhia

27 Gopalganja

3.7.2 General Socio-economic Profile of the Study Area

Demographic Profile

Among the villages falling under Burdwan and Bankura district, Jemari village has the highest

population (13179) followed by Domahani (12480) and Egara (7623). The study area villages

falling under Burdwan and Bankura district is spread across eight sub-district – Ondol,

Raniganj, Jamuria, Faridpur-Durgapur, Kalna-II, Ketugram II, Barabani and Mejhia. Asansol-

Durgapur region and Raniganj –Kulti - Jamuria area being an industrial base to a number of

large and medium industries including thermal, cement, steel plants etc. The sex ratio is 923

females per 1000 males in the study area. Villages under Burdwan district have a sex ratio of

923 and villages under study falling under Bankura district has a sex ratio of 926 per

1000males. The demographical profile as per Census 2011 is given in Table 4.30 below.

Table 3-27: Demographical Profile of the Study Villages

S

N

District Village

name

Total

pop.

No.

of

HH

Male

pop. Female

pop. Sex

ratio

SC

ST

1

Andal 6177 1308 3160 3017 954.7 1752 142

2 Tamla 732 183 375 357 952.0 366 19

3 Egara 7623 1597 3918 3705 945.6 4626 350

4 Ballavpur 6468 1441 3399 3069 902.9 1313 7

5 Napur 2461 529 1277 1184 927.2 835 217

6 Banshra 5703 1252 3001 2702 900.4 1868 902

7 Ratibati 4508 897 2348 2160 919.9 2259 143

8 Jemari 13179 2420 7026 6153 875.7 4169 649



S

N

District Village

name

Total

pop.

No.

of HH

Male

pop. Female

pop. Sex

ratio

SC

ST

9

Burdwan

Sidhpur 1829 439 992 837 843.8 142 0

10 Arati 2789 522 1480 1309 884.5 9 0

11 Kulti 2110 501 1035 1075 1038.6 446 527

12 Shrirampur 2699 637 1374 1325 964.3 2051 0

13 Ichhapur 1032 208 508 524 1031.5 193 0

14 Banshia 1607 362 828 779 940.8 503 358

15 Hijalgora 5304 1103 2743 2561 933.6 987 328

16 Domohani 12480 2603 6413 6067 946.0 2490 939

17 Kelejora 5533 1116 2877 2656 923.2 1613 386

18 Ethora 4547 904 2328 2219 953.2 1922 288

19

Bankura

Gopalpur 724 165 388 336 866.0 222 29

20 Parbatipur 1338 254 684 654 956.1 415 0

21 Dhandora 144 27 78 66 846.2 11 131

22 Shyampur 283 59 138 145 1050.7 283 0

23 Shyamapur 3362 716 1720 1642 954.7 1085 0

24 Khaerbani 249 55 128 121 945.3 123 0

25 Mejhia 5308 1086 2772 2536 914.9 1220 1

26 Gopalganja 3123 670 1636 1487 908.9 751 0

Source: Census of India 2011

With respect to the census data, the total population of the study area is about 98613, out of

which 53484 are males and 49364 females. In the block area, the scheduled caste constitutes

only 31.8 % of the total population and scheduled tribe makes a small percentage of 5.5%,

please refer Figure 4.31. The General Castes (GC) population constitutes the dominant

category making it up to 62.6 % of the total population.

Figure 3-24: Percent Population of SC and ST in Study Villages



Figure 3-25: Sex Ratio in the Study Area

The highest sex ratio (1,051) within the study area is found in Shyampur while lowest (844) is

reported in Sidhpur village. (Figure 4.33)

Figure 3-26: Male and Female Population (%) in Study Villages



Out of the study area villages, equitable number of females and males were found in Kulti and

Ichhapur, and the highest percentage of females (51.2%) were found in Shyampur (Figure 4-

33).

3.7.3 Education and Literacy

Study of education and literacy profile in the region is relevant in order to have an

understanding whether the proposed project can utilize skilled human resources available

within the study area. Highest literacy rate is found in Gopalpur village (80.5%) and the lowest

is observed in Khaerbani village (46.2%). As shown in Figure 4-34, of the total literate

population, highest male literacy rate is observed in Dhandora village (65.3%) and the lowest

male literacy is found in Kulti (53.3%) whereas highest female literacy rate is observed in

Kulti (46.7%).

Figure 3-27: Male and Female Literacy Rate in the Study Area

40.0

42.0

44.0

46.0

48.0

50.0

52.0

54.0

56.0

And

al

Tam

la

Egar

a

Bal

lavp

ur

Nap

ur

Ban

shra

Rat

ibat

i

Jem

ari

Sid

hpur

Ara

ti

Kult

i

Shri

ram

pur

Ichh

apur

Ban

shia

Hija

lgo

ra

Do

mo

ha

ni

Kele

jora

Eth

ora

Gop

alpu

r

Parb

atip

ur

Dh

ando

ra

Shya

mp

ur

Shya

map

ur

Khae

rban

i

Mej

hia

Gop

alga

nja

Per

cen

tage

%

Villages

% M %F



3.7.4 Economic Activities and Livelihood Pattern

An understanding of the economic activity and livelihood pattern is important to predict the

impact of the project activities on the economy of the regions. Villages covered under Burdwan

district are more dependent on coal mining and other factories set up in the neighboring area

like the Jamuria Industrial area, Raniganj coal field, Durgapur Steel plant for their surviva l,

though some percentage are dependent on agriculture for their livelihood. Small shops are

owned by villagers, which is another source of livelihood for some.

From Table 4.30, it can be inferred that majority of inhabitants of the villages of both Sectors

(A and B) are employed as Other workers, majorly as industrial workers. Highest percentage

of villagers categorized as “Other workers” is recorded in Shyampur II (89.4%), followed by

Cultivators found highest in Shyampur village II of Mejhia sub district covered under Bankura

district. On a comparative analysis, it was observed that maximum number of villagers of the

study area villages are categorized as Other workers. Agricultural labour percentage are

recorded highest in Kulti (44.1%) as per Census 2011.

Table 3-28: Workforce Participation for Study Area Villages

Village

Total Worker

% Cultivator

% Agriculture

Labour

% HH

Worker

% Other

Worker

Andal 1998 0.5 0.2 0.5 69.4

Tamla 255 9.4 3.5 2.0 61.2

Egara 2683 1.3 0.8 0.7 76.1

Ballavpur 2338 3.3 1.1 0.9 76.1

Napur 875 11.1 19.5 2.3 45.4

Banshra 1940 0.7 0.6 0.7 77.3

Ratibati 1161 0.2 1.5 0.6 87.4

Jemari 4024 0.4 7.5 1.4 60.4

Sidhpur 660 31.5 7.4 4.5 9.4

Arati 751 2.4 22.9 0.5 25.2

Kulti 887 6.8 44.1 1.0 38.2

Shrirampur 1456 6.8 3.8 0.8 53.7

Ichhapur 323 27.2 28.8 0.6 25.1

Banshia 666 24.2 40.4 1.2 17.6

Hijalgora 1637 8.1 7.5 1.2 67.9

Domohani 4423 5.8 4.9 3.5 60.5

Kelejora 1827 19.6 10.5 0.9 54.7

Ethora 1548 6.9 8.1 1.2 38.8

Gopalpur 258 0.0 0.0 0.0 25.2

Parbatipur 417 7.9 0.2 1.0 77.2

Dhandora 54 0.0 0.0 0.0 7.4

Shyampur I 91 82.4 9.9 0.0 6.6

Shyamapur II 1079 3.0 1.3 0.2 89.4

Khaerbani 76 1.3 0.0 0.0 0.0



Village

Total Worker

% Cultivator

% Agriculture

Labour

% HH

Worker

% Other

Worker

Mejhia 1738 10.7 10.2 1.6 62.5

Gopalganja 972 1.0 12.8 0.8 58.8

The graph below in Figure 4.35 below gives a comparative chart of the employment details of

the villagers in the study area villages.

Figure 3-28: Employment Details of the Study Area

Figure 3-29: Percentage Composition of Various Workers in the Study Area

As it is clear from Figure: 4.36, major workforce is engaged as “Other workers” followed by

cultivator workers. Agriculture constitutes third major income generation sector in the study

area villages.

Cul ti ato ri ul tu Labou

Hous hold o

Oth Wo

Villages

Perc

enta

ge %

Vill

age

And

al

Tam

la

Egar

a

Balla

vpu

r

Nap

ur

Ban

shra

Rati

bati

Jem

ari

Sidh

pur

Ara

ti

Kult

i

Shr

iram

pur

Ichha

pur

Bans

hia

Hija

lgo

ra

Dom

oha

ni

Kele

jora

Etho

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Gop

alp

ur

Parb

atip

ur

Dha

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ra

Shya

mpu

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Shya

map

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II

Khae

rba

ni

Mej

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Gopa

lgan

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3.7.5 Socio economic Infrastructure

Medical Facilities:

In Burdwan district there are 40 hospitals, 133 Health Centers, 776 clinics and 64 dispensaries. 17In Bankura distrct, there are 1 hospital , 2 Sub division hospital, 5 Rural Hospital, 17 Block

Primary Health Center, 70 Primary Health Center, 564 Sub center, 3 PP Unit including urban

family welfare center, Gaouripur Leprosy Hospital. However, the details of medical

facilities in the blocks surveyed have been shown below:

Table 3-29: Medical Facilities in the Blocks Surveyed18

S.N Block Hospital Health Center Clinics Dispensaries

1 Andal 3 2 34 -

2 Raniganj 3 2 21 3

3 Jamuria 2 3 14 2

4 Faridpur Durgapur - 4 15 1

5 Kalna II - 5 21 2

6 Ketugram I - 3 24 1

7 Barabani 1 5 17 1

8 Salanpur 1 3 13 1

During public consultation, medical facilities within the study area villages was found less

satisfactory. No medical facilities are available in the most of the villages. Primary Health

Centre is present in only 1 village viz. Andal. In addition, out of 28 villages surveyed, only 12

have Health sub center viz. Ichapur, Egara, Gopalmath, Ballavpur, Bansra, Ratibati, Tirat,

Sidhpur, Kalajora, Kulti, Mejia and Gopalpur.

Drinking water facilities:

Drinking water facilities are available to all villages. It was observed that majority of the study

are villages have fair access to drinking water through village hand pumps, tube wells, open

wells. Some of villages also have water supply.

Transport & Communication:

Both the sectors of the bock are traversed by National Highway (NH2) also called the Delhi

Kolkatta Highway. Kolkata-Delhi Main/Grand Chord lines of Eastern Railway traverses

through the middle of the coalfield. The surrounding areas are also well linked by a good

network of roads and branch lines of Eastern Railways. The approach roads to the block are

also well developed, which ONGC can use for transportation of machineries, equipment and

manpower. There are also some State Highway and Major District road which connecting the NH

2. There is no public transport system in most of the sampled villages. Villagers depend on private

auto, jeep or bus. The post and telegraph facility is available within 5 to 10 km from all sample

villages.

17 http://bankura.gov.in/Health/Health_Bankura_180213.htm 18 http://bardhaman.nic.in/health/medifaci.html

http://bankura.gov.in/Health/Health_Bankura_180213.htm

http://bardhaman.nic.in/health/medifaci.html



Power Supply

All the study area villages are electrified, with adequate power supply for domestic,

agricultural and other purposes.

Post and Telecommunication

In this era of telecommunication, access to mobile phone is within every bodies reach. All

villages from sample study area have the access to post- office and other private courier

services.

Market Facilities

The study on availability of market place not only tells the buying power of the common people

but also gives an inner sight of services it provides for the attainment of a better living. All

the sampled villages do not have market facility. For market place, villages solely depend on

urban places or towns or of adjacent areas namely Raniganj, Kulti, Andal, Jamuria etc. There

are only some shops present within the villages.

Educational Facilities

The study area possesses necessary educational infrastructure to cater to the educational needs

of the both rural and urban population. The overall educational institutional infrastructure of

Burdwan and Bankura district is given in below Table 33

Table 3-30: Educational Facilities in Burdwan19 And Bankura20 District

S.N Educational Facilities Burdwan Bankura

1 Sishu Siksha Kendra 1085 448

2 Primary schools 4074 3551

3 Junior High school 348

4 Middle schools 110 189

5 High schools 472

6 Higher Secondary schools 274 248

7 Govt. Degree Colleges 25 15

8 General University 1

9 Open university 4

10 Technical college 30 3

Primary education facilities were observed at all the villages within the study area. During

public consultation it was found that all 28 villages surveyed had Primary Schools and Aganwadi

Centers. However, the villages which having higher educational facilities include Ardhgram,

Bardauri, Shyampur, Kulti, Domahani, Sidhpur, Jamuria, Tirat, Ratibati, Ballavpur,

Gopalmath, Egara, Andal, Amrai and Ichhapur.

19 http://bardhaman.nic.in/education/educationinfo.html

20 http://bankura.gov.in/education.htm

http://bardhaman.nic.in/education/educationinfo.html

http://bankura.gov.in/education.htm



Photo 3-10: Higher Secondary School in Domahani village

Photo 3-11: Primary school in Jamuria village

Photo 3-12: Market area in Mejhia village Photo 3-13: Market area in Jamuria village

Photo 3-14: Electricity connection i the study area

Photo 3-15: Coal used as cooking fuel in most of the villages

Photo 3-16: Village houses in the study area villages

Photo 3-17: Common Drinking facility in the study area villages



3.7.6 Cultural and Historical Sites

There are no designated archaeological sites within the block area falling under Burdwan and

Bankura district of West Bengal. As is typical of rural India settlements, each village in the

Block has some cultural sites or sites of religious significance, like temples, mosques,

graveyards etc. Some of them are of significance for the community. Sometimes their

significance is related during specific seasons/or time of the year.

3.7.7 Social Action Plan

S. N. Concerns Action plan for ONGC

1

Some villages do not have schools for

higher education, however all villages

have primary schools.

ONGC will ensure to facilitate infrastructural facilities

for setting up high schools and also improve the quality

of education in the existing schools.

2

The study area villages do not have

satisfactory medical facilities, which is a

major problem among the locals.

A mobile public health facility will be provided by

ONGC as an aid during times of urgency.

3

The villagers are dependent on coal

mining and other factories set up in the

neighboring area like the Jamuria

Industrial area, Raniganj coal field,

Durgapur Steel plant for their survival,

though small percentage are dependent

on agriculture for their livelihood.

Hence, ONGC should expand livelihood

opportunities of the locals in the study area

villages.

ONGC should empower economically weak and

marginalized population in the study area through skill

based training with linkages for income generation.

4

The villagers do not have easy access to

market facilities

ONGC should take initiative in opening small to medium

stores with the help of local Self Help Groups (SHG’s ),

which would supplement the needs of the locals.

5

Drill site run off is a major problem

for locals which affects their croplands.

ONGC will ensure that the well pad is constructed on a

higher elevation. Waste generated should be stored in a

lined pit so that the surrounding farms are not affected.



4 ENVIRONMENTAL IMPACTS

The impact assessment section of the EIA study systematically identifies, characterizes and

evaluates the potential impacts arising out of the project and prioritizes them through a semi

quantitative system so that they can be effectively addressed by Environment Management

Plan. The proposed project involves the development well drilling following CBM gas

production, processing and pipeline transportation. Potential environmental impacts may arise

from various sequential activities (as discussed in section 3.4 of EIA report) which forms an

integral part of the proposed project. This includes:

Site preparation involving construction/strengthening of access road and well site

preparation.

Laying, operation and maintenance of interconnecting pipeline network;

Installation and operation of GCS

Drilling of development wells using air drilling/water based mud system.

Well testing and completion activities viz. hydro-fracturing, dewatering etc.

Storage and reuse/disposal of produced water, drill cutting and drilling mud

4.1 IMPACT ASSESSMENT METHODOLOGY

An environmental impact identification matrix has been developed to present an overview of

possible interactions between project aspects and components of the environment which may

get affected. The matrix structure takes into account physical, biological and socioeconomic

components of the environment on X axis and activities / aspects of the proposed drilling

project on the Y axis. Aspects (based on phases of activities like pre-drilling activities, drilling,

decommissioning and potential accidental events) and impacts on environmental components

that have been taken into consideration were in line with standard environment management

system terminology. Environmental and socioeconomic components were identified based on

reviewing of applicable legislation and baseline environment, site reconnaissance visits,

discussions with stakeholders and SENES’ professional judgment. Potential environmental and

socio-economic impacts that may result from any of the identified project aspects has been

identified in a matrix based on activity-component interaction and has subsequently been used

to develop an impact evaluation matrix that list evaluation scores based on significance criteria

delineated in section 5.1.2.

4.1.1 Impact Criteria and Ranking

Once all project environmental aspects were comprehensively identified for the different

activities of the project, the level of impact that may result from each of the activity-component

interactions has been assessed based on subjective criteria. For this, three key elements have

been taken into consideration based on standard environmental assessment methodologies:

Severity of Impact: Degree of damage that may be caused to the environmental components



concerned;

Extent of Impact: Geographical spread of impact around project location and corridors of

activities; and

Duration of Impact: Time for which impact lasts taking project lifecycle into account.

These elements have been ranked in three levels viz. 1 (low), 2 (moderate) and 3 (high) based

on the following criteria provided in Table 5-1 below:

Table 4-1: Environmental Assessment Methodology

Impact

Elements Criteria Ranking

Severity Irreversible damage to natural environment and effect on other

components

Use of scarce natural resource with competing users

Destruction of landform or diversion of channel

Serious injury, loss of life and total destruction of property

Large population affected and total loss of livelihood

Destruction of the social infrastructure (roads, bridge water

sources), cultural properties

Cultural Conflict with Community

3

Reversible damage to natural environment and direct impact on

human health

Use of not so natural scarce resource with competing users

Change of landscape or blockage of channels

Minor injury damage to property

Large population affected and partial loss of livelihood

Damage of the social infrastructure (roads, bridge water sources),

cultural Properties

Commercial conflict with community

2

Reversible damage to natural environment and indirect impact to

human health.

Use of natural resource with no competing users

Minor modification of landscape or temporary diversion

Inconvenience to community

Small population affected and partial loss of livelihood

Inconvenience to community for use of the social infrastructure

(roads, bridge water sources), cultural properties

1

Extent Impact on physical, biological and socio-economic environment

within one kilometer of the well site

3

Impact on physical, biological and socio-economic environment

within five hundred meter of the well site

2

Impact on physical, biological and socio-economic environment

within the well site

1

Duration The impact is likely to occur during the entire project life cycle at

all times.

3

The impact is likely to occur in some phases of project life under

normal operating conditions.

2

The impact is very unlikely to occur at all during project life cycle

but may occur in exceptional circumstances.

1



A positive or beneficial impact that may result from this project has not been ranked and has

been depicted in the form of ++.

4.1.2 Impact Significance

The significance of impact has been adjudged based on a multiplicative factor of three element

rankings. The Table 5-2 (below) depicts impact significance in a scale of LOW-MEDIUM-

HIGH and will be used for delineation of preventive actions, if any, and management plans for

mitigation of impacts.

Impact significance has been determined taking into account measures which have been

factored in the design and planning phase of the project. Legal issues have been taken into

account, wherever appropriate in the criterion sets, to aid in ONGC’s effort to comply with all

relevant legislation and project HSE requirements. Additionally, the results of quantitat ive

impact prediction exercise, wherever undertaken, have also been fed into the process.

Table 4-2: Criteria Based Significance of Impacts

Severity of

Impact (A) Extent of Impact

(B) Duration of Impact

(C)

Impact Significance

(A X B X C)

1 1 1 1

LOW

1 1 2 2

1 2 1 2

1 1 2 2

2 1 2 4

1 2 2 4

3 1 2 6

MEDIUM

1 3 2 6

2 2 2 8

3 2 2 12

2 3 2 12

2 2 3 12

3 3 2 18

HIGH 3 2 3 18

2 3 3 18

3 3 3 27

- Impact is Beneficial - ++ POSITIVE

To assist in determining and presenting significance of an impact, an impact evaluation matrix

(Table 5.3) has been developed. In case an environmental component is impacted by more than

one project activity, higher impact significance ranking has been taken as the significance

ranking for subject receptor. Impacts that have been determined to be having high significance

ranking of “>12” are considered significant and hence require examination in terms of

preventive actions and/or additional mitigation to reduce level of the potential impact.

Recommended additional mitigation measures and management plans are presented in

Chapter 6.

The identified impacts are further discussed in detail in the following section with discussion



focusing on impacts of higher significance. This is followed by a point wise outline of

mitigation measures recommended.

4.2 IMPACT ASSESSMENT

This section discusses the impacts of the project activities on the environmental receptors that

stand to get affected adversely by the project. It discusses probable impacts during various

phases of the project lifecycle on the environmental and socioeconomic components. The

rankings for each activity – component interaction is based on the criteria set earlier and the

resulting environmental significance with necessary justification has been recorded below for

each set of impacts and the same has been represented in the evaluation matrices. The potential

project related impacts have also been assessed and ranked considering the mitigation measures

that are likely to be implemented by the proponent during the development and production

phase. Significance ranking of potential impacts identified and assessed for the proposed

production well drilling activities is based on without any prior adoption of mitigation measures

by the proponent. In broader context, it is however important to remember that operations

related to production well drilling, well completion activities including installation of GCS and

pipeline laying will also be leading to positive socioeconomic impacts in terms of increase in

local business opportunities and on a larger perspective by providing potential energy security

at a national level.

4.2.1 Visual Impacts and Aesthetics

Visual impacts are envisaged during construction phases due to drilling of wells, site

clearance, topsoil storage and handling, sourcing of quarry material, filling and construction of

well pad, strengthening of access roads, site clearance along RoW, pipeline trench excavation,

surface facilities and gas collection stations etc. However, considering construction phase

activities to be temporary in nature (1-2 months) and most of the impacts would be limited

either to the well pad or the work site, the visual impacts are thus considered to be low.

Severity of Impact 1 Extent of Impact 2 Duration of Impact 2

Impact Significance = 4 i.e. Low

During the testing phase, flaring is expected. The glare from the flare stack can cause visual

impacts which can be severe but the glare would be limited within a small area. The impacts

from the flare would be of medium significance as the flaring would only happen in emergency

situation. Since during the operations phase of the project green belt development has been

planned around the drill site and gas collection stations thus the severity of visual impacts would

reduce even though the operations would be carried out for a considerable period of time i.e.

25 yrs. The impact is thus expected to be of Low significance.

SIGNIFICANCE WITHOUT MITIGATION MEASURES


Impact Significance = 6 i.e. Medium



SIGNIFICANCE WITH MITIGATION MEASURES



4.2.2 Impacts on Air Quality

The proposed work will involve the emission of air pollutants from point and fugitive emission

sources during various stages of the project life cycle. The project activities contributing to

pollutant emissions include:

Operation of Diesel Generator sets and Gas Compressor Engines

Flaring of CBM (during process upset)

Site clearance, top soil storage & handling during development of approach road and well

site

Vehicular movement

Atmospheric emissions from these activities will comprise mostly of gases like carbon dioxide

(CO2), nitrogen dioxide (NO2), sulphur dioxide (SO2), carbon monoxide (CO), hydrocarbons

(HCs), volatile organic compounds (VOCs) and particulate matter (PM). As the proposed

project include two sectors i.e. Sector A and Sector B, air quality modeling has been undertaken

for both the block. Also, spatial distribution of pollutant concentration has been estimated in

both the block and presented in this section.

Meteorological Parameters

Surface meteorological parameters for the site were monitored for hourly wind speed,

direction, temerature. Mixing height data was collected from secondary sources. The same is

shown in Annexure –XI. The air pollutant dispersion modeling was done for summer season

meteorological data.

Modeling Procedure

US-Environmental Protection Agency’s (US-EPA) Industrial Source Complex Short Term

Model (ISCST3) was used for the air quality dispersion analysis.

Description of Model

The Industrial Source Complex Short-Term (ISCST-3) model provides options to model

emissions from a wide range of sources that might be present at a typical industrial source

complex. The basis of the model is the straight- line, steady state Gaussian plume equation,

which is used with some modifications, to model simple point source emissions from stacks.

The ISCST-3 model accepts hourly meteorological data records to define the conditions for

plume rise, transport, diffusion, and deposition. The model estimates the concentration or

deposition value for each source and receptor combination for each hour of input meteorology,

and calculates user-selected short-term averages.



For a steady-state Gaussian plume, the hourly concentration at downwind distance x (meters)

and crosswind distance y (meters) is given by:

The Vertical Term includes the effects of source elevation, receptor elevation, plume rise,

limited mixing in the vertical, and the gravitational settling and dry deposition of particulate

(with diameters greater than about 0.1 microns).

The ISC model uses either a polar or a Cartesian receptor network as specified by the user. In

the Cartesian coordinate system, the X-axis is positive to the east of the user-specified origin

and the Y-axis is positive to the north.

The wind power law is used to adjust the observed wind speed, uref, from a reference

measurement height, zref, to the stack or release height, hs using power law equation.

The plume height is used in the calculation of the Vertical Term”V”. This is the effective

release height of the effluent. This is made up of physical stack height and plume rise due to

buoyancy or momentum. In this case the plume rise will be controlled by buoyancy.

Appropriate plume rise formulations have been used in this model. The effective plume rise

for various weather conditions and wind speed are used.

The method of Pasquill (1976) is used to account for the initial dispersion of plumes caused by

turbulent motion of the plume and turbulent entrainment of ambient air.

The infinite series term in the above Equation accounts for the effects of the restriction on

vertical plume growth at the top of the mixing layer. The Equation assumes that the mixing

height in rural and urban areas is known for all stability categories. The ISCST models currently

assume unlimited vertical mixing under stable conditions, and therefore delete the infinite

series term in the Equation for the E and F stability categories.

Pollutants traveling down wind will be reflected at the ground. The elevated inversion layer

(mixing height) will also reflect the pollutant. At long downwind distances the plume

concentration will be fully mixed vertically. This effect has also been built up in the program

(model) formulation.

Operation of DG Sets

Air pollution from point sources will be principally contributed by the DG sets (33KV,



100KVA and 350 KVA) operational at production well and at GCS site. Severity of the impact

is considered to be medium as this would directly impact on the human health. Also considering

the short duration of drilling activity (1-2 months) and the impact to be limited within close

vicinity. of the drill site, the impact on ambient air quality due to operation of DG set is thus

considered to be of medium significance.

Prediction of Air Quality Impacts – Diesel Generator Sets

Air quality in terms of ground level pollutant concentrations (GLCs) has been calculated

considering Cartesian grid using the Industrial Source Complex – Short Term (ISC3-ST)

model, which is considered to be a standard model for prediction of air quality impacts

worldwide, developed by US EPA. The following scenarios have been considered to model the

air pollutant dispersion and subsequent cumulative impacts that may arise from the combined

operation of DG sets at both well and GGS/MCS site.

Scenario 1 Operation of 3 DG sets (33KVA (work over), 100KVA (testing) & 350 KVA

(drilling)} – Well Site

Particulate matter, NO2 and SO2 have been identified as the pollutants resulting from DG set

emission. The same have been considered for prediction of modeling to compute the

incremental and ground level concentration (GLC) near sensitive receptors viz. village

settlements. Emission factor for various pollutants, viz. NO2, SO2 and particulate matter was

presumed based on values recommended by the US EPA AP 42: Compilation of Emission

Factors for DG Sets and information provided by ONGC. The following input data (Refer

Table 5.3) were utilized for carrying out ISC-ST3 dispersion modeling for the worst case

scenarios:

Table 4-3: ISC-ST3 Model Run Input Data Set

DG set specifications

DG sets at Well Site Details

Stack Height 6 m & 9m

Inner Stack Diameter 0.1m & 0.5m

Stack gas temperature 450°C & 570°C

Stack gas velocity <17 m/sec

SO2 emission rate 0.000g/sec & 0.00 g/sec

NO2 emission rate 0.075g/sec & 0.23 g/sec

PM emission rate 0.002 g/sec & 0.008 g/sec

HC emission rate 0.004 g/sec & 0.01 g/sec

The incremental value of the PM, NOx and SOx as obtained through predictive modeling

undertaken for DG operation at well site (Scenario 1) is given in Table 5.4



Table 4-4: Worst case Predictive GLC’s at AAQMS for PM, NO2 and SO2 -Scenario 1 in Block A

Components AQ1 AQ2 AQ3

Particulate Matter (PM)

Baseline Air Quality 80.8 72.4 135.6

Incremental Conc 0.03 0.02 0.018

Resultant Conc (µg/m3) 80.8 72.4 135.6

NAAQS 100 100 100

Nitrogen Oxides (NOx)

Baseline Air Quality 29.2 24.2 32


Resultant Conc (µg/m3) 29.4 24.4 32.2

NAAQS 80 80 80

Sulphur Oxides (SOx)

Baseline Air Quality 14.625 13.3 22.5


Resultant Conc (ppm) 14.64 13.31 22.52

NAAQS 80 80 80

Table 4-5: Worst case Predictive GLC’s at AAQMS for PM, NO2 and SO2 - Scenario 1 in Block

B

Components AQ4 AQ5 AQ6 AQ7 AQ8 AQ9 AQ10

Particulate Matter (PM)

Baseline Air Quality 68.9 68.5 66.0 74.9 85.8 130.7 131.0

Incremental Conc 0.04 0.03 0.03 0.02 0.013 0.001 0.001

Resultant Conc 68.9 68.5 66.0 74.9 85.8 130.7 131.0

NAAQS 100 100 100 100 100 100 100

Nitrogen Oxides (NOx)



Resultant Conc 23.6 24.1 25.4 24.8 25.0 31.4 32.6

NAAQS 80 80 80 80 80 80 80

Sulphur Oxides (SOx)





Resultant Conc 13.9 14.2 14.4 13.6 14.3 16.8 17.0

NAAQS 80 80 80 80 80 80 80

Though, ISC3-ST is a refined model, the simulation was carried out based on Burdwan district

IMD meteorology to be able to predict worst case air quality impacts for an average 24 hr

period that may be caused by peak power utilization at production well site. The maximum

GLC and its distance of occurrence from source as recorded for criteria pollutants from air

dispersion modeling undertaken for combined operation of DG sets at the well site (Scenario

1) is presented below:

Table 4-6: Over All worst case Predictive GLC’s For PM, NO2 and SO2 and Distance from

Source (Scenario 1) In Block –A & B

Pollu tants

Particula

te Matter

Nitrogen

Oxides

Sulphur Oxides

(SOx)

Maximum GLC (µg/m3) 0.12 1.78 0.17

Maximum monitored back ground

conc.(µg/m3)

131.0

32.6

22.5

Distance from source (m) 1.58km 1.58km 1.58km

Direction SE SE SE

The maximum GLC as provided above for the criteria pollutants were found to be in

conformance with the NAAQs specified for such pollutants being recorded at a distance of

approx 1.58km SE from the source (well site). The GLCs have been spatially mapped and

isoclines for air pollutant concentration have been presented in the Figure 5.1 – 5.3 below.



Figure 4-1: Isopleths for PM Emission From DG Sets



Figure 4-2: Isopleth for NO2 Emission from DG Set



Figure 4-3: Isopleth from SO2 Emission from DG Set









Flaring of Gases

Flaring is an important safety measure used at onshore oil and gas facilities to ensure gas and

other hydrocarbons are safely disposed off in the event of an emergency, power or equipment

failure, or other process upset condition. With respect to the proposed project, flaring of gases

(during process upset) will be contributing to release of air pollutants primarily in the form

of unburnt hydrocarbons. Flaring at the well sites and gas processing facilities will be carried

out through an elevated flaring system to ensure proper dispersions of emitted air pollutants.

However, the flaring of produced gas being minimal and restricted only under emergency

situations, any potential impact on air quality is not envisaged.




However an air pollutant dispersion modeling has been undertaken for flaring emissions to

establish the same. Given the chemical characteristics of the methane gas it is anticipated the

flaring emissions will be characterized by only NOx as the primary pollutant. The following

input data have been considered for model run

Stack Height (m) 30

No. of stack 1

Inner Stack Diameter (m) 0.10

Stack gas temperature (°C) 496

Stack gas velocity (m/sec) 25

NOx Emission rate (g/hr) 0.25



The maximum GLC of NOx over a 24 hr period during flaring operations was predicted to be

about 1.78g/m3 at a distance of 1.58 km from the flaring stack. The GLC for NOx during flaring

operation have been spatially mapped and isoclines for air pollutant concentration have been

presented in the Figure 5.4 while the GLCs computed at nearby sensitive receptors have been

presented in Table 5.7 and 5.8 below.

Table 4-7: Worst case Predictive GLC’S At AAQMS For NO2 – Flaring In Block A

Components AQ1 AQ2 AQ3

Baseline Air Quality 26.9 24 35

Incremental Conc. 0.68 0.31 0.76

Resultant Conc. (µg/m3) 27.58 24.31 35.76

NAAQS 80 80 80

Table 4-8: Worst case predictive GLC’S at AAQMS for NO2 – flaring in block b

Components AQ4 AQ5 AQ6 AQ7 AQ8 AQ9 AQ10


Incremental Conc. 0.51 1.13 1.08 0.00000 0.39 0.03 0.03

Resultant Conc. (µg/m3) 26.11 28.23 26.48 24.88 26.60 28.23 29.93

NAAQS 80 80 80 80 80 80 80



Figure 4-4: Predicted NOX Concentration Plot (µg/M3) – Flaring (Sector A)



Figure 4-5: Predicted NOx Concentration Plot (µg/m3) – Flaring (SECTOR B)





Site clearance, top soil storage & handling during development of approach road and well

site

As site preparatory and pipeline laying activities will involve stripping top soil; fugit ive

emissions may occur from top soil storage stockpiles under local atmospheric conditions.

Again all such emissions will be limited within 1.1km of the work site and its immediate

vicinity, unlikely to contribute to any significant air quality impacts. However, adequate top

soil storage and handling conditions need to be implemented by ONGC to prevent any dust

generation.




Fugitive Emission and Vehicular Movement

Most of the village roads are well metalled with a small percentage village roads in the study

area having un-metalled roads (Refer Section 4.1.3). Fugitive emission will arise out from the

vehicle plying in those un-metalled roads. However considering the small number of vehicle

movement for a short time spam during construction phase and continuous limited number

of vehicular movement during operation phase, duration and severity of the impact is

considered to be medium. Thus the impact would be medium significance.







Exhaust Emission and Vehicular Movement

Exhaust emissions will principally arise from engine of vehicles. However considering small

number of vehicle movement for the project, the duration and extent of the impact would be

medium. Furthermore severity of the impact could be considered as medium as it would directly

impact on human health. Thus impact of exhaust emission from vehicular movement is

considered as medium significant.









Mitigation measures for controlling impacts on air quality:

All the vehicles should be PUC certified.

All vehicles used for transportation of loose and friable materials will not be loaded

over the freeboard limit and will be covered.

Water spraying will be done on the access roads to control re-entrained dust during

dry season;

Equipment, machinery and vehicles having inbuilt pollution control devices will be

considered as a measure for prevention of air pollution at source

Engines and exhaust systems of all vehicles and equipment used for the project will

be maintained so that exhaust emissions are low and do not breach statutory limits set for

that vehicle/equipment type.

Appropriate stack height for DG sets and flare stack will be utilized.

Personnel Protective Equipment (PPEs) like mask will be provided to workers at site.

Construction materials will be fully covered during transportation to the project site

by road;

Land clearing for construction site will be kept at the absolute minimum practicable;

4.2.3 Impact on Noise Quality

Potential impact on noise quality is anticipated from sourcing of quarry materials, access road

strengthening during well site preparation, operation of construction machinery/equipment,

DG set, vehicular movement, and operation of drilling rig and ancillary equipment during

drilling operation.

Operation of construction machineries and vehicular movement

As discussed in section 4.1 ambient noise levels monitored during primary environmenta l

monitoring was found to be within both day and night time noise standards specified under

Noise Protection Rules, 2000 for all ten stations. Temporary operation of heavy machiner ies

and equipment during construction phase for well site preparation and trenching works for

pipeline laying is likely to contribute to the ambient noise levels. The average noise levels21 of

such equipment generally varies in the range of 85 to 100 dB(A) as presented below:



Dozer – 96 dB(A)

Excavator – 90 dB(A)

Rollers – 90 dB(A)

Mixer - < 85 dB(A)

Front End Loader – 88 dB(A)

Backhoe – 86.5 dB(A)

Further to the aforesaid activities increase in ambient noise levels is also envisaged from

vehicular movement. Such temporary increase in ambient noise level is likely to affect the

occupational health of personnel operating near high noise generating equipment and cause

disturbance to village communities viz. residing in close vicinity viz. Bansia, Banshgara,

Pahari, Arati, Tamla etc. However given the short term (1-2 months) and localized nature of

impacts and attenuation of noise with distance, the impact is considered to be medium

significance.







Operation of drilling rig, DG Set and ancillary equipment

The drilling rig and associated machinery, including DG sets have been identified as the

principal noise generating sources. Operation of PC pumps (during dewatering of coal

seams) and gas compressor engines (processing of CBM gas) are also likely to contribute to

increase in noise levels during the development and production assessment phase. The value

range of noise generated from various sources during project operations is as follows:

Diesel Generator Sets : 75db(A)

Gas Generator sets: 70 to 75bd(A)

Compressor Engines: 90 to 95db(A)

Drilling Rig: 85 dB(A)

Miscellaneous activities including vehicular movement : 80 to 85db(A)

21 British Columbia, “Construction Noise,” Workers Compensation Board of BC



As discussed above any incremental noise generated from the aforesaid activities will be

localized in nature except some minor occupational health impacts on site personnel along with

community discomforts. However, given the intermittent nature of drilling activit ies

(production cum development well – 1-2 months), intermittent movement of vehicles

during site preparation and well completion coupled with implementation of adequate

mitigation measures viz. siting of drilling rig away from habitations/settlements, use of

appropriate noise control equipment, regular equipment maintenance & inspection, periodic

noise level monitoring etc. the noise related impacts during operations are not considered to

be of significance. This has been further substantiated through noise quality prediction

modeling as discussed below to establish the level of noise attenuation with distance.

Noise Quality Prediction

A noise modelling exercise was undertaken based on standard noise attenuation equations to

predict noise levels from drilling rig (and ancillary equipment) near sensitive receptors within

200 m in presence of a noise barrier. A noise attenuation plot has been developed considering

natural attenuation by distance with noise level predictions. The formula used for calculat ing

noise level has been detailed in Annexure XIX

The noise generated from drilling rig is considered to be about 95.0 dB(A) at a distance of 10m

from the rig location. Noise attenuation equations (without any noise barrier) show that the

normal attenuated noise at any receptor points located at a distance of about 100 m and 200 m

from the fence-line of the rig, will be in the range of about 75.0 dB(A) and 68.9 dB(A)

respectively. In the absence of an acoustic barrier, the predicted noise levels were found to

exceed the day time noise standard of i.e. 55 dB (A). However, with the introduction of a noise

barrier (5 m in height) at the fence-line will be enough to decrease noise levels near sensitive

receptors at 200m to about 56.9 dB (A). However a detailed noise modeling exercise to look

at option of noise reductions will be conducted at the design stage to determine the barrier

specifications. The noise attenuation plot with and without acoustic barrier is presented in

Figure 5-6



Figure 4-6: Noise Attenuation Plot for Drilling Phase







Mitigation Measures:

Typical mitigation measures for noise will include the following:

Installation of sufficient engineering control on equipment and machinery (like

mufflers & noise enclosures for DG sets and PC pumps) to reduce noise and vibration

emission levels at source, carrying out proper maintenance and subjecting them to rigid

noise and vibration control procedures.

Providing noise barrier at the fence line of the well site facing the sensitive receptors

(like school, health center etc.).

Design consideration for well site to keep maximum distance of noise generating

source from the receptors (settlement etc.).

Undertaking preventive maintenance of vehicles to reduce noise levels.

Regular monitoring of noise level at each site.



4.2.4 Potential Impact on Land use

As the proposed project will entail requirement of land, it will either be permanently

acquired or obtained on temporary lease basis from the concerned landowner. With the CBM

block area primarily characterized by agricultural land (refer section 4.2.1) potential impacts

envisaged in the form of change in land use pattern resulting from well site and GCS siting

and construction. Temporary land use changes are also likely to occur during pipeline laying

for evacuation of CBM gas from well site to GCS for processing and supply.

However taking into account land requirement of approx. 160 acres for 80 development wells

(2 acres per development well; 20-25 acres per GCS) significant change in the land use of the

CBM block is envisaged which is represented largely by agricultural land (approx 60.53%).

Considering this severity of the impact would be medium as extent of the impact. Furthermore

considering a project life cycle of 20-25 years and the occurrence of the impact during the entire

project life cycle, duration of the impact would be severe. However taking into account that

ONGC plans to reinstate the land to its original land use (refer Post Closure Plan at section

7.1.7) following the end of the project life cycle in accordance with defined post closure plan

duration of the impact is considered Low.







Mitigation Measures

Optimize land requirement through necessary design and process considerations viz.

use of directional drilling etc.

Provide adequate compensation to landowners against loss of standing crops, trees and

temporary severance of land in accordance to regulatory requirements viz. Petroleum

& Mineral Pipelines (PMP) Act etc.

All necessary protocols shall be followed and legal requirements shall be implemented

with respect to local regulation pertaining to use of land for industrial purpose;

Site boundaries shall be marked to ensure that land taken for well sites, pipelines, GCS

shall be restricted to pre-agreed area;

Minimum utilization of land and clearing of site for development;

Attempt shall be made to lay the pipeline along the ROW of road to the possible extent;

All bulldozer operators involved in site preparation shall be trained to observe the



defined site boundaries;

Earth moving equipment, typically a bulldozer with a grader blade and ripper tyne and a

bucket type bulldozer for excavation work, will be brought in for site leveling,

grading and compaction;

Minimize the disturbance of vegetation present in and around site and ROW of

pipelines and approach road, if any;

4.2.5 Impact on Soil Quality

Impacts on soil may arise from the following project activities during both construction and

operations:

Site clearance for well pad construction and pipeline laying

Resource consumption for well pad development

Discharge of surface run-off to nearby village agricultural land.

Discharge of CBM produced water

Storage, handling and disposal of drill cuttings and various waste streams (sewage, food

waste, spent oil, lubricants etc.).

Accidental spillage from storage and handling of fuel and chemicals involved in the

preparation of water based mud for development well drilling.

The impacts arising from the aforesaid activities have been discussed in details in the

subsequent sections:

Site clearance for well pad construction, pipeline laying and use of quarry material for well

pad construction

It is fair to predict that when maximum percentage of land use in the block is agricultural land,

there are fair chances that development wells will be sited on agricultural land which will be

either permanently acquired or obtained on long term lease by ONGC from the concerned

landowner. As discussed in Section 4.2.6 the soil of the block is dominated by clay loamy

soils. The only crop grown in this type of soil is rice, which is well-suited to the region.

Further considering the well pad to remain for 25 years nature of the impact would be high

while the impact of the stripping of the top soil is localised in nature (within the work site). Thus

significance of the impact is considered low. In view of the above and given that adequate

measures to be adopted by ONGC through optimizing land requirement through use of direction

drilling, top soil storage, reinstatement of well site etc. (Refer Post Closure Plan at section 7.1.7)

the impact would further be reduced.






Discharge of CBM produced water and surface run-off

It is estimated that huge volume of produced water is likely to be generated during development

well dewatering operation given a daily production rate of 5 m3/day/well from 80 wells. This

produced water it is characterized by high salt concentrations (salinity) and sodium levels

(sodicity). The available water analysis data show the water to be fit for agriculture/ livestock

with limited treatment.

The current monitoring program reveals low SAR in the soil of the block i.e. in the range of

0.8 – 1.57 (Refer section 4.2.6). However, considering the duration of the project, the increase

in sodium levels of the soil can increase the Sodium Absorption Ratio and this can have

deleterious effect on permeability of certain soil types rendering it more prone to erosion.

High Sodium Absorption Ratio (SAR) values of these waters generally have a potential

deleterious effect on permeability of certain soil types rendering it more prone to erosion. The

higher the SAR, the greater the potential for reduced permeability, which reduces infiltrat ion,

reduces hydraulic conductivity, and causes surface crusting. Irrigation waters with SAR levels

>12 are considered sodic (ALL 2003). Further, in water high salinity, the ability of the plant

root to incorporate water is diminished thereby exhibiting decrease in crop yield. Considering

the above fact, severity of the impact can be considered high. Extent and duration of the impact

would be medium. Thus impact of discharge of CBM produced water into soil would be

medium significance.


Restrict project and related activities during monsoon season;

Avoid areas close to river and water bodies;

Implement adequate sediment control measures to prevent discharge of untreated

surface run-off characterized by increased sediment load to abutting agricultural land.







Storage, handling and disposal of drill cuttings and various waste streams (sewage, food

waste, spent oil, lubricants etc.) and accidental spillage from storage and handling of fuel

and chemicals

Improper storage of drill cuttings and chemicals on open soil or unpaved areas can also lead

to soil contamination of drill site and adjoining agricultural lands due to surface run- off.

However, with the project utilizing an HDPE lined pit at each well site for storage of drill



cuttings (50-55 m3) generated during drilling operations, any adverse soil quality impact is

considered unlikely. However considering that appropriate mitigation measures will be

implemented by as referred in the “Waste Management Plan” and “Pollution Prevention

& Abatement Plan” (refer section 7.1.1 & 7.1.2) the impact is not considered to be of major

significance.




4.2.6 Impact on Local Drainage & Physiography

Potential impact on drainage and topography viz. alteration of drainage pattern are anticipated

during well site preparation, sourcing of quarry material, widening/strengthening of access

roads and restoration of well facilities. The study area is characterized by a flat terrain and some

undulation along the Damodar river and Ajoy river. Also there are number of small channels

which join into the Damodar river. The potential impacts on physiography and drainage can

take place due to strengthening of the access road, laying of pipeline (for evacuation of CBM

gas from wells to GCS) and development of well site and other surface facilities. However this

impact on local drainage system will not be localized, though will happen during some phases

of the project life cycle. Thus the impact of the project on local drainage & physiography

is considered to be medium significance.







Mitigation Measure

Levelling and grading operations will be undertaken with minimal disturbance to the

existing contour thereby maintaining the general slope of site;

Disruption/alteration of micro-watershed drainage pattern will be minimized to the

extent possible.

Loss of micro-watershed drainage, if any to be compensated through provision of

alternate drainage.

Restrict pipeline laying and related construction activities during monsoon season.

Laying of pipeline across drainage channels will be conforming to relevant OISD



standards OISD-STD-141- Design & Construction Requirements of Cross Country

Hydrocarbon Pipelines

5.2.1 Impact on Surface Water Quality

Taking into account the scale and nature of the proposed project, potential impact on

surface water quality is anticipated from the possible discharge of CBM Produced Water,

hydrotest water, domestic waste water (sewage) and surface run-off.

Discharge of Hydrotest Water, Sewage and Run-off

Surface water quality impacts are envisaged from discharge of untreated/uncontro l led

discharge of pipeline hydrotest water, sewage and surface run-off during construction and

operation phase. However given the volumes (5.2 KLD) of sewage generated will be

treated onsite using a combination of septic tank and soak pit and run-off discharge will be

controlled through usage of sediment traps, oil-water interceptors any potential surface water

quality is not envisaged. Further given the use of low toxicity chemicals in the preparation

of pipeline hydrotest water the impact is not considered to be of major significance.




Discharge of CBM Produced Water

The surface water bodies in the CBM block area is characterized by Ajay river and

Damodar River and its tributaries viz. Nunia, Punta, Singaran. As discussed in section 3.4.8

discharge of produced water could lead to erosion and deposition along the stream valley and

may remove alluvial material including clay, silt, sand, and perhaps gravel, as well as plant

debris from those places and deposit them where the flow velocity drops. The erosion may be

greater where bedrock and/or alluvium are sandy and unconsolidated; in these areas, erosion

may proceed quickly and deeply. Thus the potential constraint associated with such discharge

need to be evaluated by ONGC prior to its implementation as a possible disposal alternative.

Potential impacts on surface water quality from uncontrolled discharge of produced water (if

required) is envisaged in the form of significant increase in concentration of key water quality

parameters viz. SAR, EC, TDS, alkalinity, hardness etc. and alteration in flow rates. Further

considering that major river within the CBM block is Damodar river conforming to CPCB

Water Use Class C (Drinking water source after conventional treatment and disinfection)

any possible discharge of large volumes of CBM produced water would cause severe impact.

Thus impact significance can be considered as medium significance. However taking into

account the fact that the produced water will be subjected appropriate treatment to ensure

conformance with CPCB discharge standards and also considering ONGC plans to maximize

reuse of treated water for irrigation etc. any potential impact on surface water quality is not

envisaged.









Following mitigation measures will be implemented for water pollution control:

Efforts will be made to reduce wastage of water and recycling will be practiced

wherever possible.

Proper treatment of all wastewater and produced water discharges will be made to

ensure that they comply with criteria set by the regulatory body (MoEF and SPCB)

Drainage and sediment control systems at the well site and GGS site will be efficient ly

designed

Construction activities viz. stripping, excavation etc. during monsoon season to be

restricted to the extent possible.

All chemical and fuel storage areas, process areas will have proper bunds so that

contaminated run-off cannot escape into the storm-water drainage system. An oil- water

separator to be provided at the storm water drainage outlet to prevent discharge of any

contaminated run-off.

The mitigation measures have been further elaborated in the EMP (Refer to section 7.1.1 ad

7.1.2)

4.2.7 Impact on Ground Water Resource and Quality

Potential impact on ground water quality is anticipated in the form of depletion of aquifer levels

during utilization of groundwater for well pad development and drilling activity and in the form

of ground water contamination from hydro-fracturing and dewatering operations during well

testing and operation phase. The potential impacts have been discussed in detail in the

subsequent sections.

Contamination of Aquifer

Dewatering may also result in the contamination of subsurface aquifer following migration of

unpressurized methane or frac fluid components through natural coal bed fractures into the

porous aquifer region. Studies (EPA 2004) revealed that while fracturing fluids contain various

chemicals, the identities of which are not generally a reporting requirement for operators,

no conclusive evidence of drinking water contamination by hydraulic fracturing fluid injection

was found to be associated with CBM wells. However such possibility of contamination of

subsurface unconfined aquifers exists if the well casings are not properly cemented. Again with



ONGC supporting the use of water based non-toxic additives in the preparation of “frac fluid”

hence any probable adverse impacts on local and regional groundwater resources is not

anticipated.




Depletion of Aquifer Levels

Development of well site and drilling activity would require water which will be brought by

tanker from nearby testing well/ or borewell. Thus impact on ground water resource is

anticipated. The development well testing and completion program for the proposed

project entails the dewatering of the coal seams to optimize the flow of CBM trapped in the

coal seams. It is estimated that nearly 10-12m3 of produced water will be generated per day

during each development well dewatering operation from a target depth of ~ 1200m. The

duration of dewatering is likely to range within 6 months to a year depending upon the optimum

production of CBM from development wells. Research demonstrates that principal effect of

CBM withdrawals on groundwater is reduction of water volume and hydrostatic head within

coal beds from which methane is being extracted. Any effects of water withdrawal from

methane-bearing coal beds on water levels in other aquifers are a function of the depth of the

target coal beds and the degree of hydraulic connection between CBM targets and the other local

or regional aquifers.

Pumping water during CBM extraction with respect to the proposed project is unlikely to cause

lowering of the water table of shallow aquifers (generally encountered at depth ranging

55-60m bgl) due to lack of hydraulic connectivity between the deep coals and shallow

aquifers coupled with the great vertical separation between the coal beds and the shallow

groundwater systems. However, at depths of ~1200m only untapped aquifers are encountered

and the productive aquifers in the area are located at depths ranging from 200– 252 m bgl22.

Further analysis of ground water monitoring data collected from Wyoming portion of the

Powder River Basin by Wyoming State Geological Survey during 1993-2006 (Clarey 2009)

revealed drawdown limited to only coal beds or coal aquifers with aquifer recovery taking

decades (Wheaton and Meredith, 2009). The time for the CBM-bearing aquifer to return to

its original water pressure or level depends upon the extent of drawdown and the volume of water

pumped, porosity and permeability of and depth to the coal bed, climatic and seasonal

conditions, and connectivity to sources of water recharge. In view of the above findings, impact

with respect to sub-surface aquifer drawdown is not considered to be of major significance.









Mitigation Measures

The overuse of groundwater will be restricted through efficient water budgeting and

reuse in all operations.

Proper care will be taken to not to fracture coal seams adjoining productive aquifers

Monitoring of groundwater quality and levels will be conducted periodically to detect

any potential contamination and/or drawdown.

Repeatable pump test will be done on the development/production well at a constant

rate and water level measurements recorded at specified time intervals during both

pumping and recovery cycles. Depending on the baseline hydrogeological condition as

discussed in the baseline section the pump test will be carried out taking into account

the potential impact on ground water resources during dewatering.

4.2.8 Impact on Biological Environment

The potential impacts on ecological habitat of the study area due to proposed operations are

discussed below:

Loss of flora and floral habitat

The landuse study of the CBM Block shows that 80.87% of Sector A and 60.53% of Sector B of

the CBM block area is under agricultural activities.

Part of two Protected Forests viz. Ukhra and Gangajalghati Protected Forest which are

predominantly natural sal forests fall in Sector B of the block. None of the proposed gas

prospect wells are identified within any of the forest area. During the core hole and test well,

the ground vegetation shall be removed as required. As mentioned before (existing

environment baseline chapter), in the non-forest areas, the vegetation ground cover comprises

normally common herbs and shrubs having no significant ecological values in terms of

conservation point of view. The impact on flora and its habitat is minimal as the majority of

the wells are proposed in agricultural land/culturable waste land. Although there is no impact

on wild flora, but there will be an impact on the cultivated crop production.

22 Groundwater information booklet of Bardhaman district



Impact of Fauna & Faunal Habitat

As described in Chapter 4, the wild animals are confined to the forest areas. Invading of crops

by elephants and in the human settlements is reported to be very rare especially in Bankura

Forest division area. In non-forested areas and human settlements, the existence of any kind of

wild animals/scheduled animals have not reported and also were not observed during the

primary survey. As there is no scope of any activity where ecological habitat of any wild fauna

is reported to occur, the impact on the wild fauna is not envisaged. The small reptilians, insects

(butterfly) will be the only fauna to be disturbed and they may migrate to nearby suitable

habitats. This impact may be very insignificant as it is reversible, because the primary activit ies

will be purely temporary in nature.

Aquatic Habitat, Aquatic Flora & Fauna

The major rivers viz. Damodar and its tributaries support the aquatic ecosystem in the study area.

It has been established in the baseline studies, that existing water quality of the surface water

bodies is quite favorable to support diverse range of aquatic fauna and flora. Therefore, in case

of any discharge of untreated waste water from drilling site may result in the possible

contamination of receiving streams and their ecological habitat. Surface runoff during

monsoon from the construction site of the wells has the potential to contaminate receiving

surface water bodies thereby impacting their aquatic ecology. Again, all such process water to

be discharged offsite will be undergoing adequate treatment to comply with discharge

standards specified by regulatory authorities.


Adequate treatment coupled with dilution factor of receiving water bodies will thus

significantly contribute in preventing any deleterious effect on the aquatic ecological habitat.







Mitigation Measures

No activity including development of well is envisaged in the area covered by protected

forests;

A minimum distance shall be kept from the well site to nearest boundary of protected

forests;

Land clearing for construction site will be kept at the absolute minimum practicable;



Construction site would be designed to minimize the removal of soil and vegetation;

Adequate diversions shall be provided to divert storm water, if any; and

Attempt shall be made to lay the pipeline along the ROW of road to the possible extent;

Topsoil will be cleared and stored for later reinstatement purposes by piling it along a

boundary of the working site;

4.2.9 Potential Impact on Socio -Economic Environment

Based on nature and type of impacts, the assessment is divided into two sections namely:

Impact on surrounding inhabitants in neighboring villages;

Impact on neighboring schools and other sensitive areas closer to the site.

Population living in the periphery of the proposed site as well as in surrounding villages will

be exposed to noise, dust and frequent movement of trucks at the time of construction. Adequate

onsite precautions will be adopted to minimize those effects. This community can look forward

to a number of benefits like jobs, access to utilities, and availability of better infrastruc ture

like roads and also in terms of wider economy generation.

Adverse Impacts:

Loss of Land and Livelihood Source: The site for the exploratory drilling purpose will be

strictly confined within the block, where agriculture serves as major livelihood for

communities residing within the block. Agricultural land for drill sites will be obtained on

temporary lease for short term period. Wells yielding positive results with respect to

hydrocarbons reserves will be retained for a longer period. In all cases, necessary payments will

be made against lease/purchase and crop compensation to concerned landowners. However,

adequate measures will be implemented by the project proponent to restore all acquired land

to its original condition for wells not indicative of any commercial hydrocarbon reserve.



Transport and Road Safety: Drilling activity involves the movement of heavy vehicles

including 100-125 truck load and machineries, which results in the road safety concerns of

villagers and school children especially near the village settlements located adjacent to the

approaching road to the site. However, there is a likelihood of vehicles and other heavy

equipment’s plying through the road may have this implication.

Influx of population: The functioning of workers camp, the warehouse and the office will cause

an influx of population. The campsite will provide shelter to approximately 35-40 workers;

drilling activities will involve a large number of labours including security staff. Thus there

may be an impact on surrounding areas:

a. Use of common resource: The unskilled workers will be deployed locally and the skilled



will be housed in temporary porta cabins. However, there might be an impact in the surrounding

area due to sharing of common resources like drinking water (which is presently being sourced

from Kanewal and Pariyej lake), roads etc.

b. Interaction of the workers residing in the campsite with the villagers: Unskilled local

laborers will also be hired during project activities and the skilled workers would be

housed in some rented accommodation neighboring to the block and supervisors on site

will be housed in porta cabins. Hence, this will not give rise to any issues like conflict

of workers with local population, safety and privacy issues of women of surrounding

villages, spread of various communicable diseases, nuisance caused by workers due to

improper sanitation facilities etc.

However, taking into account that workforce is likely to be sourced from nearby villages;

adequate sanitation facilities will be provided. Chances of such conflict are negligible.



Noise discomfort: Increase in vehicular movement and ongoing drilling activity is likely to

have major impacts in increasing the noise level of surrounding areas.

Inhabitants residing close to approach roads will get affected due to noise and dust generated

from vehicular movement during site preparation, setting up of rig and associated facilit ies,

decommissioning of rig and associated facilities. Considering short term activity with proper

mitigation measures, impact will be of low significance.

Community Health and Safety: Flaring of gasses during the drilling and well testing stage,

presents a safety concern for residents of adjacent villages and for workforce residing in the

camp site. Flaring will predominantly produce carbon dioxide emissions and also would be

associated with generation of noise and heat. The probability of accidental release of gas or

liquid hydrocarbon or a blow out during the exploratory drilling of the well will be there within

the drill site. Flaring would lead to air emission, which would in turn be a discomfort to nearby

communities

Mitigation measures:

Siting of flare stack considering nearest habitation and sensitive receptor.

Elevated flaring to be undertaken as per guidelines issued by CPCB for Oil & Gas

Extraction Industry.

Duration of flaring to be minimized by careful planning;

Beneficial Impacts:

Employment opportunities: The project will benefit people living in the neighboring

villages by giving preference to them in relation to direct employment associated with

various project related activities including drilling. Land filling process of the site area

during site preparatory phase will involve certain number of labourers, wherein, local



people can be engaged for this purpose. Drilling process will involve a number of skilled and

unskilled workers. There is a possibility that local people be engaged for this purpose to the

extent possible and hence improve the existing employment scenario of the region. However,

jobs requiring technical involvement, will not encourage hiring of villagers, as they can only

be employed in certain non-technical or casual labor jobs, that too for a limited duration. It

is proposed that preference be given to people whose land has been taken on lease.

Considering this, impact is significantly positive.

Development of the area and Impact on the local economy: Since drilling activit ies

involve a large number of workers residing in the site, there will be a significant rise in

developmental and commercial activities of the region. Local business (e.g. suppliers of

construction materials, shop owners of stationery and grocery shops of the nearby area) in this

region is also expected to flourish. The proposed project is therefore likely to benefit people

living in neighboring village by boosting the local economy. Additional expenditures incurred

by those employed at the facility are likely to enhance economy of the region. Villagers

engaged in side work activities like running shops within the villages or near the project site,

vendors or domestic helps are likely to be benefited from the project.

Improvement in road condition: The villagers would be benefited through the project, since

during site preparatory phase, existing earthen road, which would be used as the approach road

to the drill site, will be upgraded and will thereby ensure better accessibility to villagers. At the

same time, wooden bridge near (if any with poor condition) will be strengthened to ensure

even movement of vehicles and drilling machineries to the site.

Mitigation Measures

Details of mitigation measures to be taken to minimize adverse socioeconomic impacts and at

the same time accentuate positive impacts to communities in surrounding villages are discussed

in detail in section 7.1.7 of the EIA report

4.2.10 Impact on Historical and Cultural Environment

According to “The Ancient Monuments and Archaeological Sites and Remains Rules,

1959” an area of upto 300m near or adjoining protected monuments is prohibited or

regulated for the purpose of mining operation or construction activities. Since, no monuments

and archeological site is present within or near the proposed block, ONGC need not take

Impact Significance = ++ i.e. POSITIVE





any permission from any regulatory body for carrying out drilling operations in this block.

However, there are few cultural/historical spots like old temples in the block. Necessary

precautions will be taken during the movement of trucks and other vehicles carrying

equipment’s and machineries and personnel to the site.

Prior to commencement of site construction activities, location of culturally important

properties (old temples) will be communicated to the contractor. Thus, any significant

impact due to project activities on the cultural environment of the block is unlikely.





Table 4-9: Environmental Impact Identification Matrix (Without Mitigation Measures)

Physical Environment

Biological

Environment Socio-Economic Environment

Aes

thet

ics

and V

isual

im

pac

ts

Air

Qual

ity

Nois

e Q

ual

ity

Tra

nsp

ort

and

Tra

ffic

Lan

d U

se

Soil

qual

ity

Loca

l d

rain

age

and

physi

olo

gy

Surf

ace

wat

er q

ual

ity

Gro

und w

ater

res

ourc

es

Gro

und w

ater

qual

ity

Flo

ra a

nd F

lora

l H

abitat

Fau

na

and F

aunal

Hab

itat

Aquat

ic F

lora

and

Fau

na

Confl

ict

with l

oca

l co

mm

unity

Dis

ruption o

f in

fras

truct

ure

Dust

and N

ois

e dis

com

fort

Job a

nd e

conom

ic o

pport

unity

Occ

upat

ional

Hea

lth a

nd

Saf

ety

Com

munity H

eallth

and

Saf

ety

Site preparation and access road development for wells and GCS

Site clearance and approach road development L L

M L M

L L

M M + M

Top soil storage and handling L L

Sourcing of quarry materials L L M L M M M M M

Filing and construction of well pad development L L

M

M L

L L M M

M + M

Resource Consumption for well pad development L L

Approach Road development L L M L L M M + M

Vehicular movement and operation of machineries M M L M M M M

Drilling of Development Well

Physical Presence at site L

Operation of drilling rig M M M M




Biological


Aes

thet

ics

and V

isual

im

pac

ts

Air

Qual

ity

Nois

e Q

ual

ity

Tra

nsp

ort

and

Tra

ffic

Lan

d U

se

Soil

qual

ity

Loca

l d

rain

age

and

physi

olo

gy

Surf

ace

wat

er q

ual

ity

Gro

und w

ater

res

ourc

es

Gro

und w

ater

qual

ity

Flo

ra a

nd F

lora

l H

abitat

Fau

na

and F

aunal

Hab

itat

Aquat

ic F

lora

and

Fau

na

Confl

ict

with l

oca

l co

mm

unity

Dis

ruption o

f in

fras

truct

ure

Dust

and N

ois

e dis

com

fort

Job a

nd e

conom

ic o

pport

unity

Occ

upat

ional

Hea

lth a

nd

Saf

ety

Com

munity H

eallth

and

Saf

ety

Operation of DG sets and associate machineries M M M

Storage and disposal of Drill Cuttings L L M

Disposal of drilling waste water viz. rig wash etc. L L M

Hydro fracturing L

Dewatering M

Flaring of CBM (during process upset) M L M M

Disposal of sewage and municipal soild waste L L L M

Storage & handling of chemicals and fuel L L M

Sourcing of water L

Decommissioning of rig and associated facilities M M L M M M

Laying of flow lines and pipelines

Site Clearance – RoU L L M L L M

Trench Excavation and Pipe Lowering L L M M + M




Biological


Aes

thet

ics

and V

isual

im

pac

ts

Air

Qual

ity

Nois

e Q

ual

ity

Tra

nsp

ort

and

Tra

ffic

Lan

d U

se

Soil

qual

ity

Loca

l d

rain

age

and

physi

olo

gy

Surf

ace

wat

er q

ual

ity

Gro

und w

ater

res

ourc

es

Gro

und w

ater

qual

ity

Flo

ra a

nd F

lora

l H

abitat

Fau

na

and F

aunal

Hab

itat

Aquat

ic F

lora

and

Fau

na

Confl

ict

with l

oca

l co

mm

unity

Dis

ruption o

f in

fras

truct

ure

Dust

and N

ois

e dis

com

fort

Job a

nd e

conom

ic o

pport

unity

Occ

upat

ional

Hea

lth a

nd

Saf

ety

Com

munity H

eallth

and

Saf

ety

Transportation of pipe & machineries M M L M M M

Hydrotesting and disposal of hydrotest water M L M

Production of CBM

Dewatering M

Disposal of produced water M M M

Operation of gas compressor engines M M M

Evacuation of gas M M

Decommissioning /Closure

Reclamation of land + +

Potential Accidental Events/Risks Fire and explosion from leakage/release of CBM from

gas gathering pipelines

L

L

M M



Table 4-10: Environmental Impact Identification Matrix (With Mitigation Measures)


Biological


Aes

thet

ics

and V

isual

im

pac

ts

Air

Qual

ity

Nois

e Q

ual

ity

Tra

nsp

ort

and

Tra

ffic

Lan

d U

se

Soil

qual

ity

Loca

l d

rain

age

and

physi

olo

gy

Surf

ace

wat

er q

ual

ity

Gro

und w

ater

res

ourc

es

Gro

und w

ater

qual

ity

Flo

ra a

nd F

lora

l H

abitat

Fau

na

and F

aunal

Hab

itat

Aquat

ic F

lora

and

Fau

na

Confl

ict

with l

oca

l co

mm

unity

Dis

ruption o

f in

fras

truct

ure

Dust

and N

ois

e dis

com

fort

Job a

nd e

conom

ic o

pport

unity

Occ

upat

ional

Hea

lth a

nd

Saf

ety

Com

munity H

eallth

and

Saf

ety

Site preparation and access road development for wells and GCS

Site clearance and approach road development L L

L L L

L L

L

L + L

Top soil storage and handling L L

Sourcing of quarry materials L L L L L L L L L

Filing and construction of well pad development L L

L

L L

L L L L

L +

L

Resource Consumption for well pad development L L

Approach Road development L L L L L L L + L

Vehicular movement and operation of machineries L L L L L L L

Drilling of Development Well

Physical Presence at site L

Operation of drilling rig L L L L




Biological


Aes

thet

ics

and V

isual

im

pac

ts

Air

Qual

ity

Nois

e Q

ual

ity

Tra

nsp

ort

and

Tra

ffic

Lan

d U

se

Soil

qual

ity

Loca

l d

rain

age

and

physi

olo

gy

Surf

ace

wat

er q

ual

ity

Gro

und w

ater

res

ourc

es

Gro

und w

ater

qual

ity

Flo

ra a

nd F

lora

l H

abitat

Fau

na

and F

aunal

Hab

itat

Aquat

ic F

lora

and

Fau

na

Confl

ict

with l

oca

l co

mm

unity

Dis

ruption o

f in

fras

truct

ure

Dust

and N

ois

e dis

com

fort

Job a

nd e

conom

ic o

pport

unity

Occ

upat

ional

Hea

lth a

nd

Saf

ety

Com

munity H

eallth

and

Saf

ety

Operation of DG sets and associate machineries L L L

Storage and disposal of Drill Cuttings L L L

Disposal of drilling waste water viz. rig wash etc. L L L

Hydro fracturing L

Dewatering L

Flaring of CBM (during process upset) M L L L

Disposal of sewage and municipal soild waste L L L L

Storage & handling of chemicals and fuel L L L

Sourcing of water L

Decommissioning of rig and associated facilities L L L L L L

Laying of flow lines and pipelines

Site Clearance – RoU L L L L L L

Trench Excavation and Pipe Lowering L L L L + L




Biological


Aes

thet

ics

and V

isual

im

pac

ts

Air

Qual

ity

Nois

e Q

ual

ity

Tra

nsp

ort

and

Tra

ffic

Lan

d U

se

Soil

qual

ity

Loca

l d

rain

age

and

physi

olo

gy

Surf

ace

wat

er q

ual

ity

Gro

und w

ater

res

ourc

es

Gro

und w

ater

qual

ity

Flo

ra a

nd F

lora

l H

abitat

Fau

na

and F

aunal

Hab

itat

Aquat

ic F

lora

and

Fau

na

Confl

ict

with l

oca

l co

mm

unity

Dis

ruption o

f in

fras

truct

ure

Dust

and N

ois

e dis

com

fort

Job a

nd e

conom

ic o

pport

unity

Occ

upat

ional

Hea

lth a

nd

Saf

ety

Com

munity H

eallth

and

Saf

ety

Transportation of pipe & machineries L L L L L L

Hydrotesting and disposal of hydrotest water L L L

Production of CBM

Dewatering L

Disposal of produced water L L L

Operation of gas compressor engines L L L

Evacuation of gas L L

Decommissioning /Closure

Reclamation of land + +

Potential Accidental Events/Risks

Fire and explosion from leakage/release of CBM from

gas gathering pipelines

L

L

L L



5 QUANTITATIVE RISK ASSESSMENT

Quantitative Risk Assessment (QRA) involves the systematic analysis and evaluation of risks

related to various phases of the CBM development and production assessment project includ ing

feasibility and concept development, design, construction, operation and decommissioning.

The QRA is an integrated risk management process outlining rational evaluations of the

identified risks based on their significance and recommending appropriate preventive and risk

mitigation measures. The results of the QRA provides valuable inputs into the overall project

planning to ensure that the project risks stay As Low As Reasonably Practicable (ALARP)

levels at all times during project implementation.

QRA – INTEGRATED RISK MANAGEMENT PROCESS

5.1 Objective of the QRA Study

The overall objective of this QRA with respect to the proposed project involves the

identification and evaluation of major risks, prioritizing the risks identified based on their

hazard consequences and formulating suitable risk reduction/mitigation measures in line

with the ALARP principle. Hence in order to ensure effective management of any emergency

situations (with potential individual and societal risks) that may arise during the development

and production phase the following specific objectives need to be achieved.

Identify potential risk scenarios that may arise from the proposed CBM gas

production cum development project particularly during transportation of CBM from

production wells to GGS and subsequently to MCS through pipeline network.

Analyze the possible likelihood and frequency of such risk scenarios by reviewing

historical accident related data for the onshore oil and gas industries.

Predict the consequences of such potential risk scenario’s and if consequences are high,

establish the same by through application of quantitative simulations.

Recommend feasible preventive and risk mitigation measures as well as provide

inputs for drawing up of Disaster Management Plan (DMP) for the project.

QRA as a part of integrated risk management process for the proposed project consists of the

following iterative steps:

Identification of hazards

Setting Acceptance Standards for the defined risks

Evaluation of likelihood and consequences and risks of possible events.

Confirmation of arrangements to mitigate the events and respond to the same on

occurrence.

Establishment of performance standards

Establishment of continuous monitoring, review and auditing of arrangements



5.2 RISK ASSESSMENT METHODOLOGY

The risk assessment process is primarily based on likelihood of occurrence of the risks

identified and their possible hazard consequences particularly being evaluated through

hypothetical accident scenarios. With respect to the proposed project, the major risks viz.

methane gas leaks, fire etc have been assessed and evaluated through a risk matrix generated

to combine the risk severity and likelihood factor. Risk associated with the CBM development

cum production activities have been determined semi- quantitatively as the product of

likelihood/probability and severity/consequence by using order of magnitude data (risk ranking

= severity/consequence factor X likelihood/probability factor). Significance of such project

related risks was then established through their classification as high, medium, low, very low

depending upon risk ranking.

The risk matrix is a widely accepted and standardized method of quantitative risk assessment

and is preferred over purely quantitative methods, given its inherent limitations to define a risk

event with certainty. The application of this tool has resulted in the prioritization of the

potential risks events proposed CBM development cum production project thus providing the

basis for drawing up risk mitigation measures and leading to formulation of plans for risk and

emergency management. The overall approach is summarized in the Figure 6.1

Figure 5-1: Risk Assessment Methodology



5.2.1 Hazard Identification

Hazard identification for the purposes of this QRA involves the qualitative review of the project

design and operations including relevant information provided by ONGC. Availab le

literature related to previous safety assessment survey studies, project hazardous materia l

handled and work procedures were reviewed for various phases of the proposed project

including site preparation, drilling activities, well testing, well logging and setting up of surface

facilities. Information (including historical data) related to possible hazards associated with

CBM and natural gas operations were also sourced from veritable secondary sources of the

upstream oil and gas industry viz. OSHA, UNEP, API, OGP, EGIG etc.

Based on the result of this exercise, potential hazards that may arise at the project locations

were identified and a qualitative understanding of their probability and significance were

obtained. It is to be noted here that many of these potential hazards could be triggered by

natural events like earthquakes, cyclones or floods and such factors have been considered

in arriving at probable frequency of occurrence of such hazards.

Taking into account the applicability of different risk aspects in context of the CBM

production activities to be undertaken in the Raniganj block, three major categories of hazards

that can be associated with proposed project has been dealt with in detail.

Release of methane from CBM transportation pipeline leak/rupture leading to jet fire.

Instantaneous release of CBM from leaks/damage to cascade cylinders

during transportation

Blow outs leading to instantaneous release of methane

Non process fires/explosions

Structural failure – faulty design, failure of general safety, collapse of Drilling

rig mast, sabotage.

Other possible hazard scenarios like oil and chemical spills, etc. have not been considered for

detailed assessment as preliminary evaluation has indicated that the overall risk that may arise

out of them would be very low or insignificant. In addition, it is understood that the causative

factors and mitigation measures for such events can be adequately taken care of through

existing safety management procedures and practices of ONGC.

5.2.2 Frequency Analysis

The frequency analysis of the hazards identified with respect to the proposed CBM

development cum production well operations was undertaken to estimate the likelihood of

their occurrences during the project life cycle. Hazard frequencies in relation to the proposed

project were estimated based on the analysis of historical accident frequency data and

professional judgment. Based on the range of probabilities arrived for different potential hazards

that may be encountered during the proposed development phase, the following frequency

categories and criteria have been defined (Table 6.1)



Table 5-1: Frequency Categories and Criteria

Likelihood Ranking Criteria Ranking

(cases/year) Frequency Class

5 >1.0 Frequent

4 >10-1 to <1.0 Probable

3 >10-3 to <10-1 Occasional/Rare

2 >10-5 to <10-3 Not Likely

1 >10-6 to <10-5 Improbable

5.2.3 Consequence Analysis

In parallel with the frequency analysis, hazard prediction / consequence analysis exercises

were undertaken to assess the likely impact of project related risks on onsite personnel,

infrastructure and environment. In relation to the proposed project, the estimation of the

consequences for each possible event has been based either on accident experience, consequence

modeling or professional judgment, as appropriate. Overall, the consequence analysis takes

into account the following aspects:

Nature of impact on environment and community;

Occupational health and safety;

Asset and property damage;

Corporate image

Timeline for restoration of environmental and property damage

Restoration cost for environmental and property damage

The following criteria for consequence rankings (Table 6.2) have been drawn up in context of

the possible consequences of the risk events that may occur during the CBM development phase

(Phase III)

Table 5-2: Severity Categories and Criteria

Consequence Ranking Criterion Definition

Catastrophic

5

Multiple fatalities/Permanent total disability to more than 50 persons

Severe violations of national limits for environmental emission More than

5 years for natural recovery

Net negative financial impact of >10 crores Long term

impact on ecologically sensitive areas International

media coverage

National stakeholder concern and media coverage

Major

4

Single fatality/permanent total disability to one or more persons Major

violations of national limits for environmental emissions 2-5 years for

natural recovery

Net negative financial impact of 5 -10 crores

Significant impact on endangered and threatened floral and faunal species

Loss of corporate image and reputation

Short term hospitalization and rehabilitation leading to recovery Short

term violations of national limits for environmental emissions 1-2 years



Moderate 3 for natural recovery

Net negative financial impact of 1-5 crores Short

term impact on protected natural habitats

Consequence Ranking Criterion Definition

State wide media coverage

Minor

2

Medical treatment injuries

1 year for natural recovery

Net negative financial impact of 0.5 – 1 crore

Temporary and mitigable environmental impacts

Local stakeholder concern and public attention

Insignificant

1

First Aid treatment with no Lost Time Incidents (LTIs)

Natural recovery < 1year

Net negative financial impact of <0.5 crores.

No significant impact on environmental components

No media coverage

5.2.4 Risk Evaluation

Based on ranking of likelihood and frequencies, each identified hazard has been evaluated

based on the likelihood of occurrence and the magnitude of consequences. The significance of

the risk is expressed as the product of likelihood and the consequence of the risk event,

expressed as follows: Significance = Likelihood X Consequence

The Table 6.3 below illustrates all possible product results for the five likelihood and

consequence categories while the Table 6.4 assigns risk significance criteria in three regions

that identify the limit of risk acceptability as per the HSE management system of ONGC.

Depending on the position of the intersection of a column with a row in the risk matrix, hazard

prone activities have been classified as low, medium and high thereby qualifying for a set

of risk reduction / mitigation strategies.

Table 5-3: Risk Matrix

Co

nse

qu

en

ce →

Likelihood →

Frequent Probable Remote Not Likely Improbable

5 4 3 2 1

Catastrophic 5 25 20 15 10 5

Major 4 20 16 12 8 4

Moderate 3 15 12 9 6 3

Minor 2 10 8 6 4 2

Insignificant 1 5 4 3 2 1



Table 5-4: Risk Criteria And Action Requirements

Risk Significance Criteria Definition and Action Requirements

High (16 - 25)

“Risk requires attention” – Project HSE Management need to ensure

that necessary mitigation are adopted to ensure that possible risk

remains within acceptable limits

Medium (10 – 15)

“Risk is tolerable” – Project HSE Management needs to adopt

necessary measures to prevent any change/modification of existing risk

controls and ensure implementation of all practicable controls.

Low (5 – 9)

“Risk is acceptable” – Project related risks are managed by well-

established controls and routine processes/procedures. Implementation

of additional controls can be considered.

Very Low (1 – 4)

“Risk is acceptable” – All risks are managed by well-established

controls and routine processes/procedures. Additional risk controls

need not to be considered

5.3 RISK ASSESSMENT OF IDENTIFIED PROJECT HAZARDS

As already discussed in the previous section, four major categories risk have identified in

relation to the proposed CBM development cum production well drilling activities. A

comprehensive risk assessment study has been undertaken for these risks to evaluate their

significance in terms of severity of consequences and likelihood of occurrence. Considering

the CBM transportation pipeline leak/rupture as the major potential risk associated with the

proposed project the same has been assessed and evaluated in detail along with other process

and non-process related risks and summarized in the subsequent sections below:

5.3.1 Pipeline Failure Incidents & Causes

Considering the absence/limited availability of historical accident data pertaining to CBM

operations worldwide the failure frequency analysis of CBM gas transportation pipeline

interconnecting production wells, GGS and MCS have been carried out based on the review

of European Gas Pipeline Incident Data Group (EGIG) database. The EGIG is a cooperation

of 15 major gas transmission systems in Europe with the objective of providing a broad basis

for the calculation of safety performance of the pipeline systems thus providing a more realist ic

picture of the frequencies and probabilities of incidents. The 7th EGIG report recorded a total

of 1173 nos. incidents for the period 1970-2007, with 76 nos. incidents being reported for the

last three years which bring the total no of incidents to 1249 for the period (2007-2010). The

number of pipeline failure incidents per year for the period 1970-2010 has been presented in

the Figure 6.2 below.



Figure 5-2: CBM Gas Pipeline Failure Incidents (1970-2010)

[Source: 8h EGIG Report]

Pipeline failure leading to release of hydrocarbons may occur under the following

circumstances –

Internal corrosion

External corrosion – from defects in protective system, in cased crossings beneath roads

and railway lines

External interference – due to construction machinery, unauthorized excavations,

missing ground markers;

Structural failure/mechanical defects

Ground movement resulting from natural hazards viz. seismic events, subsidence,

landslides, floods etc.

External interference and construction defects are also potential cause of pipeline accidents

and may also occur at valve and pump stations. Based on the aforesaid factors, accidental

releases from pipelines are classified as either leaks or ruptures (Pluss, Niederbaumer &

Sagesser, 2000). Similar failure cases have been considered for the proposed pipeline project.

23 GEM/TD/2 provides a framework for carrying out an assessment of the acute safety risks associated with major

accident hazard pipelines (MAHPs) containing high pressure Natural Gas. It provides guidance on the selection of

pipeline failure frequencies and on the modelling of failure consequences for the prediction of individual and societal

risks.



5.3.2 Pipeline Failure – Potential Hazards

Pipeline leaks or rupture may possibly result in various fire hazards depending upon whether

the ignition is immediate or delayed. The initial release rate of hydrocarbon through a leak

depends mainly on the pressure inside the equipment (pipeline or storage cylinders), the size

of hole and phase of release i.e. gas, liquid or two-phase. Considering possible consequences

associated with hydrocarbon leaks, release rate is considered to be important as it affects the

size of the resulting gas cloud and hence the probability of ignition. It also determines the size

of fire or smoke plume which may result. The IGEM/TD/223 (Institution of Gas Engineers

& Managers) standard recognizes the following possible fire hazards as being applicable

following a gas pipeline release that ignites:

5.3.3 Ignition of a Leak (Immediate or Delayed) to give a Jet Fire

In case of leaks from buried pipelines, the transient flow will be channelized through the

voids from the overlaying soil. If the leak is sufficiently large then soil will be ejected above the

pipeline. The jet will entrain air as it moves upward and will get disperse depending on the

prevailing wind direction and other meteorological conditions. The concentration of gas till its

Lower Flammability Limit (LFL) is hazardous, as it can catch fire on availability of ignit ion

source. The total duration of release and its impact/consequence will depend on how quickly

the release is identified and the sectionalizing valve isolates the pipeline section. If the materia l

encounters an ignition source while it is in the flammable concentration range, a jet fire may

occur. The momentum of released material from a buried pipeline generally results in vertically

oriented fires. Such fires have smaller hazard ranges than horizontally orientated fires.

5.3.4 Immediate Ignition of a Rupture to give a Fireball & Crater Fire

Following a rupture, or large puncture, there will be rapid depressurization in the vicinity of

the failure. For the buried pipelines as in this case, the overlying soil will be ejected with the

formation of a crater of a size and shape, which influences the behavior of the released gas. At

the start of the release, a highly turbulent mushroom shaped cap is formed which increases in

height above the release point due to the source momentum and buoyancy, and is fed by the

gas jet and entrained air from the plume which follows. In addition to entrained air the

release can also result in entrainment of ejected soil into the cap and plume. Eventually,

the cap will disperse due to progressive entrainment and a quasi-steady plume will remain.

(Acton, Gosse & McCollum, 2002). If the large scale quasi-instantaneous flammable gas

release is under pressure is ignited almost immediately a fireball will result. In order for a

fireball to occur, the cloud must be ignited before it has time to disperse hence there must be

an ignition source close to the release point at the time of release. The energy released by the

rupture of the pipeline typically results in the formation of a crater around the rupture point.

Gas enters the crater from each end of the ruptured pipeline. Once the fireball has dissipated,

this gas continues to burn as a crater (or trench) fire. Crater fire generally occurs when the

ignition of the gas released by rupture is delayed.

Flash Fires : The buoyancy of CBM gas and momentum of the high pressure release tend to



propel the gas away from ground level within a relatively short distance from the source. This

means that it is highly unlikely that flammable concentrations of gas will be produced at ground

level beyond a short distance from the source. For this reason, flash fires are not included within

the QRA.

5.3.5 Pipeline Failure – Frequency Analysis

In view of the transportation of CBM generated from production wells to GGS/MCS via

pipeline network an effort has also been made to understand the primary failure frequencies of

gas pipeline which is the result of the number of incidents within a period divided by the

corresponding total system exposure. Based on the EGIG database the evolution of the primary

failure frequencies over the entire period and for the last five years has been provided in Table

6.5 below.

Table 5-5: Primary Gas Pipeline Failure Frequency

Period

Interval

No. of Incidents

Total System Exposure

(km.yr)

Primary

failure

frequency

(1000 km. yr)

1970-2010 41 years 1249 3.55.106 0.351

1970-2007 38 years 1173 3.15.106 0.372

1971-2010 40 years 1222 3.52.106 0.347

1981-2010 30 years 860 3.01.106 0.286

1991-2010 20 years 460 2.25.106 0.204

2001-2010 10 years 207 1.24.106 0.167

2006-2010 5 years 106 0.65.106 0.162

[Source: 8h EGIG Report]

The primary failure frequency declined from 0.87 per 1000 km.yr in 1970 to nearly 0.35 per

1000 km.yr in 2010 indicating an improvement in pipeline safety performance over the recent

years. The failure frequency of the last five years (2007-10) was also computed to be 0.16 which

is half the failure frequency recorded for the entire period (1970-2010). The evolution of

primary failure frequencies over the entire period including the 5 year period of 2007-2010 has

been presented in the Figure 6.3 below.



Figure 5-3: Evolution Of Primary Failure Frequencies

[Source: 8th EGIG Report]

The above figure depicts a steady drop of the primary failure frequencies and the failure

frequencies of the 5 years moving average. The moving average primary failure frequency

over five years decreased by a factor 5 (0.86 to 0.16 per 1000 km.yr). Data published by the

UK Onshore Pipeline Operators Association (UKOPA) show a similar trend, with the frequency

of accidental releases in the period 2002-2006 being over 25 times lower than the frequency for

the period 1967-1971 (0.028 as opposed to 0.706 releases per 1000 km of pipe per year).

Pipeline Failure Frequency Analysis – Incident Causes : As discussed, gas pipeline

failure incidents can be attributed to the following major causes viz. external interference,

construction defects, corrosion (internal & external), ground movement and hot tap. The

distribution of incidents with cause has been presented in the Figure 6.4 below.

Figure 5-4: CBM Gas Pipeline Failure – Distribution Of Incident & Causes

Source: 8th EGIG Report



The interpretation of the aforesaid figure indicated external interference as the major cause

of pipeline failure contributing to about 48.4% of the total failure incidents followed by

construction defects (16.7%) and corrosion related problems (16.1%). Ground movement

resulting from seismic disturbance, landslides, flood etc contributed to only 7.4% of pipeline

failure incident causes. The primary failure frequencies per cause for the period 1970-2010

have been presented in Figure 6.5 below.

Figure 5-5: CBM Gas Pipeline Primary Failure Frequencies Per Cause

[ Source: 8th EGIG Report]

The Figure 6.5 illustrate the reducing failure frequency over the years which has been achieved

primarily due to technological developments viz. welding, inspection, condition monitor ing

using in-line inspection and improved procedures for damage prevention and detection. As

far as the cause of external interference is concerned, its associated primary failure frequency

over the period 1970-2007 decreased to 0.17 per 1000 km.yr while the 5-years moving average

has leveled off at around 0.10 per 1000 km.yr since 1997. However external interference to

this date remains the main cause of pipeline failure incidents, with nearly 50% of the incidents

being attributed to the former over the period 2003-2007.

The pipeline failure frequency viz. leaks or rupture for the proposed project involved pipeline

transportation of CBM to GGS/MCS and end users is established based on the interpretation of

the database of European Pipeline Incident Data Group (EGIG) representing almost 2 million

kilometer year of pipeline operations. The failure rate reported by EGIG for on-shore gas

pipeline with design pressure greater than 15 bar is 4.76 x 10-4 km/year. Full Bore Rupture (FBR)

represents 13% of the cases (6.188 x 10-5 failure /km/yr.) and 87% of the cases represents

Leaks (4.14 x 10- 4 failure /km/yr). Hence based on the EGIG historical data as discussed above

the probability of failure for CBM gas interconnecting pipeline network is as follows.



The frequency of pipeline failure during transportation of CBM gas through a network of

pipelines interconnecting production wells with GGS/MCS is presented in the Table 6.6 below.

Table 5-6: CBM Transportation Pipeline Failure Frequency & Class

S.N.

Pipeline Failure Case Failure Frequency

(km/year)

Frequency Class

1 CBM transportation pipeline rupture 6.188 x 10-5 Remote

2 CBM transportation pipeline leak 4.14 x 10-4 Remote

Further considering that adequate preventive measures viz. installation and operation of

SCADA system, provision of isolation/sectional valves etc are likely to be adopted by ONGC

for addressing any potential pipeline related safety risks/hazards viz. jet fire etc the failure

frequencies for the proposed pipeline project are likely to be lower.

Pipeline Failure Frequency Analysis – Damage Type: As discussed in the earlier section

potential hazards from pipeline failure primarily results from pin-hole cracks, holes and/or

ruptures caused due to external disturbances, construction defects, corrosion etc. As external

disturbance has been identified as one of the major cause for pipeline incidents (EGIG database)

the same has been considered in evaluating the failure frequency with respect to the nature of

damage and pipeline design parameters viz. diameter class.

The pipeline failure frequency in relation with external interference, damage type and

diameter class have been presented in the Figure 6.6 below.

Figure 5-6: External Failure Frequency – Relation With Damage Type & Diameter Class

The above figure reveals that pipeline with smaller diameter are more susceptible to damage

by external disturbance as compared to larger diameter pipes. Thinner wall thickness of pipelines



with smaller diameter also contributes to the increased failure frequency for such pipelines.

Hence based on the aforesaid discussion it can be therefore concluded that the failure

frequency of the 7.8”, 9.75”, 11.7” and 17.5” dia CBM transportation pipeline interconnecting

GGS and MCS will be lower compared to 4” dia pipeline to be involved in routing CBM from

production wells to GGS.

Pipeline Failure – Ignition Probability

In the period 1970-2010, only 4.4% of the gas releases recorded as incidents in the EGIG

database ignited. Ignition depends on the existence of random ignition sources. The EGIG

database gives the opportunity to evaluate the link between ignition and leak size.The ignit ion

probability of pipeline failure (rupture & leaks) with respect to the proposed project is derived

based on the following equations as provided in the IGEM/TD/2 standard.

P ign = 0.0555 + 0.0137pd2; for 0≤pd2≤57

P ign = 0.81; for pd2>57

P ign = 0.0555 + 0.0137(0.5pd2);

for 0≤0.5pd2≤57

P ign = 0.81; for 0.5pd2>57

(Ignition Probability for pipeline ruptures)

(Ignition Probability for pipeline leaks)



The ignition probability of natural gas release from 4” & 18” pipeline leak or rupture is

calculated based on the above equations utilizing the following input parameters as discussed

below.

Pipeline Inlet Pressure (bar) = p= 50 kg/cm2

or 49 bar Pipeline diameter = d = 4 inches or 0.101 m

Pipeline diameter = d = 18 inches or 0.457 m

For 4” pipeline rupture pd2

= (49) X (0.101)2

= 0.499

For 4” pipeline leak 0.5 pd2

= 0.5 X (49) X (0.101)2

= 0.249

For 18” pipeline rupture pd2

= (49) X (0.457)2

= 10.23

For 18” pipeline leak 0.5 pd2

= 0.5 X (49) X (0.457)2

= 5.11 Since 0≤

2 57 and 0≤0.5pd

2 57, the following equation has been utilized for deriving the ignition

pd ≤ ≤ probability for pipeline failure.

P ign for 4’ pipeline rupture = 0.0555 + 0.0137pd2

= 0.0555 + 0.0137 (0.499) = 0.062

P ign for 4” pipeline leak = 0.0555 + 0.0137(0.5pd2

) = 0.0555 + 0.0137 (0.249) = 0.058

P ign for 18’ pipeline rupture = 0.0555 + 0.0137pd2

= 0.0555 + 0.0137 (10.23) = 0.195

P ign for 18” pipeline leak = 0.0555 + 0.0137(0.5pd2) = 0.0555 + 0.0137 (5.11) = 0.125

Based on the aforesaid calculation the probability of jet fire occurring from accidental gas

release from pipeline leak or rupture and subsequent ignition has been presented in Table 6.7

below:

Table 5-7: Ignition Probability – Cbm Transportation Pipeline Failure

S. N Pipeline Failure Case Project Pipeline Failure

Frequency (per year)

Ignition

Probability

Jet fire

Probability

1 4” Gas Pipeline Rupture 6.683 x 10-4 0.06 4.009 x 10-5

2 4” Gas Pipeline Leak 4.471 x 10-3 0.05 2.235 x 10-4

3 18” Gas Pipeline Rupture 6.683 x 10-4 0.19 1.269 x 10-4

4 18” Gas Pipeline Leak 4.471 x 10-3 0.12 5.365 x 10-4

Process Leak – Frequency Analysis

The frequency of process leaks can be estimated directly from analysis of historical data

obtained from E & P Forum hydrocarbon leak database (E&P forum 1992), World Offshore

Accident Database (WOAD) and OREDA. Although onshore data is available for process leaks,

the information is not considered representative of the actual scenario. Under such

circumstances historical data available on hydrocarbon leaks in the OGP authenticated offshore

accident databases have been considered for purpose of process leak frequency analysis.

Failure frequencies of process equipment as in this case where leaks have been considered

from valves and flanges of the GCS facility has been presented in Table 6 .8 below.



Table 5-8: Leak Frequencies From Process Equipment

Equipment Type Frequency

(per equipment item year)

Flanges 8.8 X 10-5

Valves 2.3 X 10-4

Source: HSE Hydrocarbon Release Database

5.2.5 Consequence Analysis

Pipeline generally contains large inventories of oil or gas under high pressure; although

accidental releases from them are remote they have the potential of catastrophic or major

consequences if related risks are not adequately analyzed or controlled. The consequences of

possible pipeline failure is generally predicted based on the hypothetical failure scenario

considered and defining parameters such as meteorological conditions (stability class), leak hole

& rupture size and orientation, pipeline pressure & temperature, physicochemical properties of

chemicals released etc.

As discussed earlier, jet fire have been identified as the possible consequences resulting from

release and is dependent on the ignition time. Taking into account the GCS facility and pipeline

the hypothetical risk scenarios have been considered for failure consequence modeling with

respect to proposed project. In addition to the above the following design specifications as

presented in Table 6.9 have been considered for consequence modeling

Table 5-9: Scenaios for QRA Studies

S.N Plant Section Initiating

Event Risk Scenario Potential Outcome

Scenario

1

Valves/Flanges of

GCS facility

Leaks

Leak from 1”

dia

Jet fire

2

Pipeline

Rupture

4” & 18”

pipeline

Jet fire, flash fire

Table 5-10: Leak Frequencies from Pipeline and GCS

S. N. Parameters Values

1 Pipeline diameter (inch) 4 inch and 18 inch

2 Pipeline length (km) 10 km

4 Design pressure (bar)* 49

5 Design temperature (in °C) 40

In the present study, we have estimated the consequence of each reference scenarios (as

mentioned in Table 6.9) in terms of fatality only. For each effect type (i.e. radiation,

overpressure and toxic release), a set of threshold values were considered having 1, 5, 10, 20



and 50% fatality (Table 6.11). These threshold values were derived from Probit functions using

the following equations:

Thermal Radiation [1]: Pr = -14.9 + 2.56 x In (Q4/3 x t)........................................... Eq.

Overpressure [2]: Pr = 1.47 + 1.37 ln (p)............................................................... Eq.

Toxic release [3]: Pr = a +b x In (Cn x t)................................................................ Eq.

where,

Pr = Probit

Q = heat radiation (W/m2)

t = exposure time (s)

p = peak overpressure (psig)

a, b, n = constants describing the toxicity of a substance

C = concentration (mg/m3)

t = exposure time (minutes)

Table 5-11: Threshold Values For Each Effect Level

Fatality (%) Radiation (kW/m2) Overpressure (psi)

50 26.50 13.10

20 20.78 7.15

10 18.25 5.20

5 16.42 3.95

1 13.42 2.40

[N. B. The values were derived using the above mentioned Probit equations]

Based on these threshold values, effect distances were calculated to delineate different threat-

zones for each reference scenario. The analysis made use of the ALOHA model, one of the

most commonly used effect models to generate the consequence effects showing the estimated

distances for each scenario considered to a specified hazard end-point. These zones are

displayed on a single Threat Zone plot displayed as red, orange and yellow with red

representing the worst hazard. The threat zone displayed by ALOHA represent thermal

radiation levels and also indicates the effects on people who are exposed to those thermal

radiation levels but are able to seek shelter within one minute.

Predominant local meteorological conditions and composition of the natural gas as provided

during discussions with ONGC personnel was also considered for this study. Nearly about 98%

of the CBM gas is constituted by methane with ethane representing the remaining 2%.

Case I: Release of CBM gas from valves/flanges of GCS – hole size (1”dia)

The jet fire threat zone plot for release and ignition of flammable CBM gas from GCS facility

valves/flanges leak of size - diameter 1 inch is represented in Figure 6.7 below.



THREAT ZONE:

Figure 5-7: Threat Zone Plot For Jet Fire - 1'' Dia Leak

Threat Modeled: Thermal radiation from jet fire

Orange: 11 meters --- (10.0 kW/ (sq m) = potentially lethal within 60 sec Yellow: 16 meters --- (5.0

kW/ (sq m) = 2nd degree burns within 60 sec

Taking into consideration established probit values that are linked to fatality caused by thermal

radiation from fire, no endpoint distances have been computed below thermal radiation of 13.42

kW/sq.m.

Case II: Ignition of natural gas from complete rupture of 4” pipeline

The complete rupture of 4” pipeline will result in the release of methane gas (in gaseous

phase) the ignition of which is likely to result in jet fire. The threat zone plot of jet fire resulting from

pipeline rupture is derived using ALOHA and represented in Figure 6.8.



Figure 5-8: Threat Zone Plot For Jet Fire - 4” Pipeline Rupture

THREAT ZONE:

Threat Modeled: Thermal radiation from jet fire resulting from full bore rupture Red : 10

meters --- (26.50 kW/ (sq m) = 50% fatality

Orange: 12 meters --- (16.42 kW/ (sq m) = 10% fatality Yellow: 14 meters --- (13.42 kW/ (sq

m) = 1% fatality

The worst hazard for release and ignition of natural gas from complete rupture of 4” dia

pipeline will be experienced to a maximum radial distance of 10 m from the source with 50%

fatality.

Case III: Ignition of natural gas from complete rupture of 18” pipeline

The complete rupture of 18” pipeline will result in the release of methane gas (in gaseous phase)

the ignition of which is likely to result in jet fire. The threat zone plot of jet fire resulting from

pipeline rupture is derived using ALOHA and represented in Figure 6.9



Figure 5-9: Threat Zone Plot For Jet Fire - 18” Pipeline Rupture

Threat Zone

Threat Modeled: Thermal radiation from jet fire resulting from full bore rupture

Red : 44 meters --- (26.50 kW/ (sq m) = 50% fatality Orange: 62 meters --- (16.42 kW/ (sq m)

= 10% fatality Yellow: 70 meters --- (13.42 kW/ (sq m) = 1% fatality

The worst hazard for release and ignition of natural gas from complete rupture of 18” dia

pipeline will be experienced to a maximum radial distance of 44 m from the source with 50%

fatality.

For various hypothetical scenarios considered with respect to proposed CBM development

project, the threat zones calculated using ALOHA for defined thermal radiation intensities have

been presented in the Table 6.12 below.

Table 5-12: Threat Zone Distance For Hypothetical Risk Scenarios

Case

No

Pipeline Failure Case

Hole Size

(inch)

Distance to

26.50 kW/m2

(m) – 50% fatality

Distance to

16.42 kW/m2

(m) – 10% fatality

Distance to

13.42 kW/m2 (m)

– 1% fatality

I Valves/flanges leak 1.00 <10 <10 <10

II 4” pipeline rupture 4.00 10 12 14

III 18” pipeline rupture 18.00 44 62 70



Modeling Risk of Overpressure from Vapour Cloud Explosion

A flash fire is the most likely outcome upon ignition of a dispersing vapour cloud from a natural

gas release. If ignited in open (unconfined) areas, pure methane is not known to generate

damaging overpressures (explode). However, if the gas is ignited in areas where there is

significant degree of confinement and congestion an explosion may result.

Although an unconfined explosion is considered to be unlikely for the proposed project an effort

has been made to establish the overpressure (blast force zone) that may result from delayed

ignition of vapour cloud generated from any such accidental release from ruptures. For

overpressure risk modeling using ALOHA a delayed ignition time of 15 minutes was considered

of the vapour cloud mass. However the threat modeled revealed that Level of Concern (LOC)

was never exceeded that may possibly lead to loss of life within the blast radius. This is in

agreement with the earlier assessment that no damaging overpressure is likely to be generated

from unconfined ignition of natural gas vapour cloud. The results have been provided in Figure

6.10 below

Figure 5-10: VCE Modeling Results for Overpressure

5.2.6 Individual Risk

Individual risk is the probability at which an individual may be expected to sustain a given

level of harm from the realization of specified hazards. In simple terms it is a measure to

assess the overall risk of the area concerned thus to protect each individual against hazards

involving hazardous chemicals, irrespective of the size of the accident that may occur.

Graphically it represents as iso-risk contour which connects all of the geographical locations

around a hazardous activity with the same probability of fatality.

In order to generate different level of iso-risk curves for the area concerned, it is required to

estimate the respective contribution of each reference scenario. Accordingly, individual risk

of each scenario was estimated by combining the frequency of the initiating event, the

conditional probability of that scenario sequence and the Probit value of the effect footprints.

In particular following expression was used to estimate the Individual Risk (IR) at a given

geographical location for each reference scenario:

……… … … … … … … … … … … … … … … … … … … … … … … … … … … … … … … (Eq. iv)

where

- fi is the frequency of the accident scenario i (year-1); calculated as multiplicative factor of

the frequency of the initiating event and the probability that the sequence of events leading to

the accident scenario i will occur: fi = fincident i . Psequence i

- PFi is the probability of fatality that the accident scenario i will result at location (i.e. Probit).



The individual risk so obtained is then compared with the Tolerance Criteria of Individua l

Risk as provided in the Figure 6.11 below.

Figure 5-11: Tolerance Criteria for Individual Risks

Hence for the proposed project the individual risk has been considered only for pipeline rupture

as no predicted fatality has been established for the consequence modeling undertaken for

CBM gas release ignition from valves/flanges of the GCS facility. Based on the above

equation the individual risk as calculated including the tolerance criteria has been presented in

the Table 6.13 below.

Table 5-13: Individual Risk – Pipeline Rupture

Accident Scenario

Frequency

Fatality Probability

Individual Risk

Individual Risk

Criterion

4 inch Pipeline Rupture

4.009 x 10-5

0.50 2 x 10-5

ALARP

4.009 x 10-5

0.10 4 x 10-6

Tolerable

4.009 x 10-5 0.01 4 x 10-7

Tolerable

18 inch Pipeline

1.269 x 10-4 0.50 6.3 x 10-5

ALARP

1.269 x 10-4 0.10 1.2 x 10-5

Tolerable

1.269 x 10-4 0.01 1.2 x 10-6

Tolerable

1.269 x 10-4 0.50 6.3 x 10-5

ALARP



5.4 DISASTER MANAGEMENT PLAN

5.4.1 Objective

The primary objective of the DMP is to provide a safe, timely, effective and coordinated

response by the onsite Emergency Response Team (ERT), along with the other local and

government agencies/departments to prevent or minimize any major emergencies that may

arise from possible failures/risks viz. blow outs, oil spill, fire & explosion etc. associated with

exploratory and development drilling.

The main objectives of this plan are:

To minimize the risk for human life, environment and common property

resources, by means of an effective and efficient intervention;

Protection of the environment;

Protection of public safety;

To initiate the early and efficient response throughout the utilization of all

available resources.

5.4.2 Purpose

The purpose of the DMP is to effectively manage and control the emergencies occurring during

project operations. This DMP ensures,

emergency response group is effective & adequate;

clear roles and responsibilities of key personnel & support groups;

availability and adequacy of emergency infrastructure & resources; and

efficient emergency communication

Emergency Classification

Due consideration is given to the severity of potential emergency situation that may arise as a

result of storage tank and pipeline accident events as discussed in the Quantitative Risk

Analysis (QRA) study. Not all emergency situations call for mobilization of same resources or

emergency actions and therefore, the emergencies are classified into three levels depending on

their severity and potential impact, so that appropriate emergency response procedures can be

effectively implemented by the ONGC Emergency/Crisis Management Team. The emergency

levels/tiers defined with respect to this project based on their severity have been discussed in

the subsequent sections with 'decision tree' for emergency classification being depicted in

Figure 6.12



Figure 5-12: Emergency Classification Of “decision Tree”

5.4.3 Level 1 - Emergency

An event that can be dealt with by on-site/location personnel and resources; the event does not

have any effect outside the site and external agencies are unlikely to be involved. There is

unlikely to be danger to life, to the environment, or to Company assets or reputation. The

Disaster Management Plan and relevant procedures are activated; the Site Head is notified.


It is an event which may be dealt by the ONGC Emergency/Crisis Management Team but

requires involvement of wider Company support and external services. The initial event may

be “on-site”, having some effects outside the site or be “off-site”, and external emergency

services will be involved. There is likely to be a danger to life, the environment, or company

assets or reputation. The Disaster Management Plan and relevant procedures are activated;



local administrative bodies and Emergency Response Groups including ONGC Corporate are

notified.


It is a major event which requires the involvement of District or State Crisis Management

Group. For Company this may result from insufficient local resources and/or because the

incident has broader implications such as reputation, legal prosecution, financial loss etc. Under

such circumstances, the Disaster Management Plan is activated; ONGC Corporate,

District/State Administrative Authorities and other Emergency Response Groups are notified.

The criterion for classification of various levels of emergencies and associated response has

been presented in the Figure 6.13 below.

FIGURE 6-13 Emergency Response Levels

Level Type Criter ia for Classifica t ion

1Leve

l 1

2Sma ll Mino r medic al or injury case requiring no extern al suppo rt

Equip m e nt dama ge withou t any signi fic a nt impa ct on oper at io n

Mino r fire witho ut any perso nn el injury or plant dama ge

Net nega t ive financ ial impac t of <1 crore s.

Smal l oper at ion al spill s

No poten tia l impac t on flora and faun a of ident i fie d eco-se n si t ive areas .

Loca l stake h old e r conc e r n and public atten tio n

3Leve

l 2

4Med ium Fire and explosio n which requir e s extern al assista n c e

Requir e s evac ua t ion of injure d perso nn el and locals throu gh assi sta n c e

from local emerg e nc y group s.

Loss of corp o ra te image and reputat ion

Adver se impa ct on envir on m e nta l sensi t ivi tie s (if any) within a radius of

1km.

Mediu m sized spill s

Net negat ive finan cia l impa ct of 1 - 5cror e

5Leve

l 3

6Lar ge Incid e nt leadin g to mult iple s injurie s or fatal it i e s

Requir e s assi sta nc e from Dist ric t /S tate emer ge n c y respo nd in g grou ps .

Adver se impa ct on enviro n m e nta l sensi t ivit ie s (if any) within a radiu s of

>1km .

Majo r oil spill s

State/n at ion w id e media cover a ge

Net nega t ive financ ial loss of >5cr or e



5.4.6 ONGC Disaster Management Plan

ONGC has in place a Disaster Management Plan which has been developed to set up the

appropriate mechanism and course of action to mitigate the impact of an Emergency event viz.

blow out, fire, explosion etc. The plan provides a procedure allowing all those involved in and

outside ONGC to mobilize their resources in an orderly manner and react effectively in time.

The plan therefore, aims at immediate response to an Emergency event to prevent escalation to

a Disaster and also the response in the event of such escalation. The plan will be updated as

and when necessary, but at least once in every year by Basin HSE in consultation with Surface

Team, Sub surface Team, Drilling Services and Well Services Group. Also ONGC has been

accredited with ISO 9001:2008; 14001:2004 and OHSAS 18001.

The roles and responsibilities of both ONGC emergency response team to combat with any

emergency situation as discussed in the earlier section are presented in the Table 6.13 below

while the details of the resources available onsite with the Crisis Management Team to control

key emergency events particularly blow outs has been presented in Annexure XX



Table 5-14: ONGC On - Site Disaster Management Team Profile

S.N. Response

Team/Resource Location Facilities Functions

1 Site Control Room

In case of Emergency at site, a Site Control Room will be set up at a safe distance near the Site.

Emergency vehicle, Communication facilities, Mobile Van, Ambulance, Lighting arrangement and Food shall be provided at the SCR in the minimum possible time.

Assessment of situation and requirements, tor mobilization of equipment / resources etc.

To pass on the information regarding latest positions to Emergency Control Room.

To keep record of all decisions and messages received

To keep records of all materials received at site during Emergency.

2 Emergency Control Room (ECR)

The control room will function from Drilling Services (DBC) Control Room.

To be equipped with good communication facilities like Telephone (2 nos.), Radio Equipment, Wall Chart showing Locations of Installations, fire station, copy of the Disaster Management Plan.

Command and control of entire operations.

Round the clock monitoring and flow of information to & from the site of emergency.

Maintenance of running record of events and action taken

Casualty list and information to next if Kin.

Preparation of Management report on the situation at every 12 hrs. interval.

Co-ordination with the key personnel's for guidance and assistance required at site.

Co-ordination with other oil companies

Co-ordination with local authorities — Police, Civil Administration, Hospital & Fire.

Sanction and procurement of the items required during emergency.

Arrangement of food, water, shelter, medicine& logistics etc.,

Information to public.



S.N. Response


Co-ordination -with regions / projects and Head — Quarter.

Co-ordination with fire brigade & fire tender facilities available with different organizations nearby.

3 On Scene Commander (OSC)

At initial stage, someone close enough to the scene of Emergency (Installation manager / DIG / senior most person) will exercise as On Scene Coordinator. He will take the charge of the situation immediately.

- Initial assessment at the spot and need for mobilization of sources.

Inform Emergency Control Room in case, the communication is lost due to disaster. Seek assistance from nearby rig or installation for communication.

In case of fire, commands the firefighting operations till tire service assistance reaches on the scene.

Arrange ambulance & doctor if required.

4 Chief Emergency Coordinator

The Head of the concerned Operational Group will be the Chief Emergency Coordinator and will exercise control through ECR.

- Will keep record of messages and decisions taken to control the Emergency. He will also appraise the Basin Manager from time to time on steps taken to control the situation and status of emergency.

5 Regional Crisis Management Team (RCMT)

Regional Crisis Management Team comprises of officers having experience in handling major emergency. The RCMT is expected to be informed within 30 minutes of occurrence of incident by the Mines Manager / Emergency Control Room. The Team will immediately proceed

- Familiarize itself thoroughly with the manual and its implications.

To plan strategies for different Crisis situation so that all necessary inputs can be mobilized without loss of time. Frequent mock drill be carried out.

In the event of crisis, go to the scene of emergency, assess the situation and take over all fronts out and / or fire up o the point of normalizing the well.



S.N. Response


to the location and take action to bring the situation under control.

Determine the type of assistance required for handling the emergency.

To seek guidance and assistance from coordinator group.

Updating the action plan of disaster management on the basis of their experience.

Keep them well informed of the technical development through various journals/ magazines, suggest scope of improvement in equipment and practices.

6 Support Services Group

The Support Services Group will comprise of coordinators from Central Workshop, Electrical, Civil, Logistics, E&T, Health Services and P&A, Geology and Reservoir etc. They will provide all necessary help required by emergency control room / Site Control Room / RCMT and be in constant touch with Emergency Control Room and may have to stay at the site of Emergency

- Support Manager To identify location of relief camp at a safe

distance from the affected area and arrangement for shelter (tent, cot, chair, blanket etc.)

To arrange food, drinking water, beverage at relief camp

Maintenance of record of casualties

Co-ordinate with local authorities.

Fire Services Mobilize firefighting person and equipment

onsite.

Information & communication manager

Ensure communication facilities. Set up Emergency communication (Walkie-talkie,

VHF etc.) at the site control room.

Electrical Arrangement of Emergency Gen. set and flame

proof lighting at the site.

Logistics Arrangement of transport facilities, cranes, moles

etc. for man and material.



S.N. Response


Material Management

To assist in issuing of materials Arrangement of equipment, materials, expertise

etc., as per requirement of Emergency Control Room / RCMT.

Civil Civil jobs such as construction of temporary road,

control of Oil spread by sand bags or digging of pits, water pumping and storage arrangement etc.

Security Deployment of Security personals at vulnerable

locations.

Cordoning off the affected site.

Police Help

Sub surface Team (Geology & Reservoir) To assist in Geological / Reservoir information

about the well

Medical Services Mobilize first — aid team with adequate medical

facility and ambulance at Emergency site.

Corporate Communication (PRO) Press briefing with approval of basin manager



For Level 3 emergency (refer Figure 6.13) apart from the mobilization of onsite Emergency

Response Team as referred above ONGC also need to activate the off-site Disaster Plan to

safeguard the lives and properties of nearby communities with the assistance/support from

local/district authorities.

Local/District Authorities – Roles and Responsibilities

I. Deputy Commissioner/ Addl. Deputy Commissioner

Take overall responsibility for combating the Off-site Emergency,

Declare an area of 2 km around the site as Emergency zone.

Direct the District Police, Fire services for warning and evacuating the public.

Direct the team of Doctors headed by the District Medical Officer to attend the

affected people.

Direct the Revenue Officer of the District to provide safe shelter, food and other

life sustaining requirements for the evacuees.

Direct the District Transport Officer to arrange for transportation of victims and

evacuation of the people trapped within the Emergency zone.

II. Superintendent of Police

Mobilize force to the site of Emergency on receipt of instruction from DC / Addl.

DC to cordon off the affected site / area and disperse the unwanted crowd for

easy fire fighting operation / rescue operation.

Post adequate nos. of Police personnel in the following places.

In all the evacuated areas to provide security to the properties of the evacuees.

In the entire Road junction outside the emergency zone to control traffic and

priority for movement of fire tender ambulance etc.

Warning and advising the affected population through unambiguous, reliable and

rapid announcement by the SDIPRO/DIPRO. The information to be given to the

public should be the nature of the incident, the degree of the incident; the steps taken

to control the situation and the Emergency counter measures. The announcement

shall be both in Assamese and Hindi.

Liaison with the Medical co-coordinator for post mortem of the dead bodies, if any,

Any other action as desired by the Dy.

Commissioner. III. District Transport Officer

On receipt of the request from Emergency Control Room, ONGC, the Transport Officer shall

arrange for the dispatch of vehicle to reach the Emergency site immediately. The dispatched

vehicle shall be at the disposal of ONGC until the release order is issued. He also takes up the

action as directed by the Dy. Commissioner / Addl. Dy. Commissioner.

IV. District Medical & Health Officer

On receipt of information form Dy. Commissioner / Addl. Dy. Commissioner about the

Emergency, the District Medical Officer shall extend the facilities available at the Hospital and



make the services of the trained doctors to provide necessary medical care for Emergency

medical cases. He shall ensure that the Primary Health Centers & Municipal Dispensaries are

equipped with required quantities of drugs & equipment’s.

V. District Fire Officer

Shall assist in Fire Fighting in case of Off-site Emergency and rescue operations in the affected

area with the help of Civil defense / Home guards etc.

VI. Officer in-charge of Relief Camp An officer in the cadre of Revenue Inspector shall be the In-charge of the Relief camps. He

shall maintain a record of the evacuees under the headmen, women and children. The

department concerned at the Relief Camps shall provide the following facilities.

Sanitation: This is very important at the Relief Camps. A team of Sanitary Inspector shall

attend the camp round the clock. Latrine facilities shall be provided.

Water: Municipal Board shall arrange storage of Water.

Lights: Assam Electricity Beard shall arrange Electric Lights at the Camp. VII. District

Veterinary & Animal Husbandry Officer

Shall depute as many persons as required (taking in to account the number of Cattle especially

milking animals in the affected areas) to look after the welfare of the cattle and protect their

lives by applying precautionary measures. He shall also be responsible for arranging food for

the Cattle during Emergency.

VIII. District Agriculture Officer

Will prepare an action plan to protect the food grains / standing crops in the Emergency affected

area and will take action accordingly.

IX. Station Director (Door-Darshan)

On receipt of the message from the Superintendent of Police, he will immediately telecast the

Emergency message as given by the Police authority, if required. Similarly, he will also arrange

to telecast periodic review message and completion of Emergency / all clear message.

The section below highlights the sequential action to be performed by the ONGC Emergency

Response Team along with drilling personnel under various emergency situations viz. blow

outs, fire and explosion etc.

Action Plan – In event of Blow Outs

The following actions shall be taken by the Shift — in charge to bring the situation under

control.



A. On experiencing Kick, following safety actions to be taken, it BOP fails to seal Well

Mouth

1

Alert Crew to ensure escape if situation worsens

Action : Shift

I/C

2

Divert flow partially, intermittently or fully to waste pit (safe distance)

Action : Drilling

Crew

3

Send SOS message (i) By EPABX (ii) By Emergency Vehicle

Action Shift I/

C

4

Switch off all Engines / Generators

Action: I/C Mech. /

Elect.

5

Remove all inflammable material away

Action: Rig Crew (Drilling / Mech. /

Elect.)

6

Remove important Records to Safe place


Elect.)

7

Remove costly instruments / equipments to safe place


Elect.)

B. If the Blow out is sudden and massive while initial safety action could not be

performed.

1 Carry out rescue operation for Top man and move other Rig Crew to safe distance.

Action : Shift I/C

2 Send SOS message by Phone and by Emergency vehicle

Action : Shift I/C

3 Reorganize to try operations like BOP, Diversion of flow etc., as listed in (A), if

situation permits,

Action : Shift I/C

4 If heavy spillage occurs, try to contain in the restricted area

Action : Shift I/C

5 Alert the inhabitants, if private residence is near

Action : Geologist / Chemist

As soon as an Emergency is declared and the site is evacuated, Site Control Room will be

established near the drill site at a safe distance.



Action Plan – Process Leak / Loss of control resulting in Fire and Explosion

1 Shout "FIRE'', "FIRE", "FIRE", "AAG", “AAG", “AAG", "JUI', "JUI', "JUI”,.... In

case of fire

2 Inform Shift. In-charge/Site In-charge at first site of Fire / heavy Gas leakage / Oil spill

Action: Person who notices the incident first.

3 Inform Field Fire Station, Base Fire Station and Base Control Room

Action: Shift I/C. Site I/C.

4 Identify the Source of leakage, isolate and attempt to extinguish tile Fire with hand

held Fire Extinguisher.


5 Nearby source of ignition should be cut off immediately (like stoppage of the cutting /

welding jobs, stopping engines, switching off the Electricity etc.

Action: Shift I/C. Site I/C. Elect. I/C. Mech. I/C.

6 Start Fire water pumps and pressurized Fire Header to extinguish Fire

Action: Mechanics / Shift Operator

7 Inform other GGS to stop supply of Oil & Gas to the affected Installation.


8 If needed, close all wells and shut down the Installation under Emergency conditions.


9 Release over pressure wherever required.


10 Inform nearby Installation for Help.


11 If heavy spillage occurs, try to contain in the restricted area.


12 Fire crew In-charge after arriving at Site will report to the Shift in-charge /Installa t ion

In-Charge and access the situation and position the Fire tender at appropriate place

from where it can be fought effectively.

Action: Fire Crew I/C.

13 The quantum of spillage / Gas leakage shall be briefed by the installation I/C to Fire

in-charge for Fire fighting

Action: Fire Installation I/C.

14 Cooling and quenching of nearby pressure vessel / tanks to be carried out

Action: Fire crew

15 All persons present at the site should assist the Fire crew in tire fighting.

Action: All persons present at site

16 Continuous monitoring of Gas concentration should be done.

Action: Safety Officer/Asst. Shift I/C

17 Entry at Main Gate should be regulated and Contract personals should be removed

from the affected site by CISF.

Action: Area Commander CISF

18 Pass the information and progress to Emergency Control Room at regular intervals.

Action: Installation I/C., Field I/C.



6 ENVIRONMENTAL MANAGEMENT PLAN AND

MONITORING FRAMEWORK

This Environmental Management Plan and Framework is a site specific document for CBM

development and production well drilling Project in Raniganj CBM Block, which has been

developed to ensure that ONGC can implement the project in an environmentally sustainab le

manner and where all contractors, understand the potential environmental risks arising from

the proposed project and take appropriate actions to properly manage such risk. This EMP will

be considered to be an overview document that will guide environment management of all

aspects of ONGC’s activities within the block. This EMP may also be considered as flexib le

and will be backed up by more specific Environmental Action Plans, Procedures and Bridging

Documents with the progress of development and production activities. The EMP describes the

actions to be adopted in terms of:

National Policies and Regulations

IFC/World Bank Group Environmental, Health & Safety Guidelines

Best Practices and guides

Local Environmental and Social Sensitivities The Environment Policy of ONGC is presented at Box 7.1

6.1 ENVIRONMENT MANAGEMENT PLANS

The Environment Management Plan details out the mitigation measures to be implemented by

both ONGC and the Contractors during development and production phase in Raniganj CBM

Block. The following environmental management plans have been formulated in line with the

proposed project activities viz. site preparation, drilling, testing, completion and

decommissioning including pipeline laying.

Pollution Prevention and Abatement Plan

Waste Management Plan

Produced Water Management Plan

Road Safety and Traffic Management Plan

Occupational Health & Safety Management Plan

ONGC will ensure communication and implementation of the aforesaid management plans

prior and during operations on ground. In addition, the mitigation measures for social issues

and concerns are also separately presented in this report. Disaster Management Plan to address

technological emergency situations viz. pipeline leaks etc. that may arise from the proposed

project have already been discussed as part of the Quantitative Risk Assessment (QRA) study.

In cases, where there are possible overlaps, the plans have been cross- referenced to avoid

repetition. The additional mitigation measures to ensure effective management of identified

environmental aspects during various phases of the proposed project have been discussed under

the aforesaid plans in the subsequent sections.



Box 7-1 ONGC Corporate Environment Policy



6.1.1 Pollution Prevention and Abatement Plan (PPAP)

Scope

The Pollution Prevention and Abatement Plan (PPAP) is applicable to and encompasses both

construction and operational phase activities for the proposed project which has potential to

adversely impact the ambient air and noise quality, surface and groundwater quality and soil

quality of the Raniganj CBM block.

Purpose

The PPAP establishes specific measures and guidelines aimed at effectively addressing and

mitigating the air, noise, water and soil quality impacts that may arise as result of well site

preparation, pipeline laying, development and production well drilling, construction and

operation of GCS & completion and decommissioning/site closure. The plan also details out

roles and responsibilities of ONGC and the contractors (both civil and drilling) to ensure

effective implementation of the plan.

Mitigation Measures and Strategies

The following mitigation measures need to be adopted and implemented by ONGC and its

contractors during various phases of the proposed project to prevent and control air emissions

(both point and fugitive), high noise generation, soil contamination and fertility loss,

contamination and depletion of ground water resources and storm water discharge.

Table 6-1: Mitigation Measures For Environmental and Social Impacts

Project Phase Mitigation measures

A. Control of fugitive and point source emissions

Construction of well site,

surface facilities and

pipeline laying

Siting of production well and borrow areas away from human

settlement/habitation and sensitive receptors.

Vehicles delivering raw materials like soil and fine aggregates shall be

covered to prevent fugitive emissions.

Storage and handling of raw material and debris to be carefully managed to

prevent generation of fugitive dust.

Sprinkling of water on earthworks, material haulage and transportation routes

on a regular basis during dry season.

All vehicles, equipment and machinery used for construction will be subjected

to preventive maintenance as per manufacturer norms.

All vehicles utilized in transportation of raw material and personnel will have

valid Pollution under Control Certificate (PUC). Vehicular exhaust will be

complying with the CPCB specified emission norms for heavy diesel vehicles.

The top soil generated from site clearance activities to be stored in designated

area and stabilized to prevent fugitive dust emissions.

Adequate stack height to be provided to DG sets in accordance CPCB

standards.

Drilling, CBM

production, Completion,

GCS operations

Flaring during process upset/emergency cases will be undertaken in

accordance with the CPCB Guidelines for Discharge of Gaseous Emissions

for Oil & Gas Extraction Industry.

Location of flare stack to be governed by the presence of habitation and

sensitive receptors




A. Control of fugitive and point source emissions

Duration of flaring to be minimized by careful planning;

High combustion efficiency, smokeless flare/burner will be used.

An efficient flare burner head equipped with an appropriate combustion

enhancement system will be selected to minimize incomplete combustion,

black smoke, and hydrocarbon fallout.

Volumes of hydrocarbons flared will be recorded.

Exhausts of engines on the drilling rig diesel generators will be positioned at

a sufficient height to ensure dispersal of exhaust emissions; engines will not

be left running unnecessarily.

Preventive maintenance of DG sets to be undertaken as per manufacturers

schedule to ensure compliance with CPCB specified generator exhaust

emissions.

Periodic monitoring DG set exhaust emissions to be undertaken to ensure

conformance with emission limits specified for DG sets (upto 800 KW) under

CPCB Industry Specific Standards.

Installation of monitors set to activate warning signals whenever detected

concentrations of H2S exceed 7 mg/m3. The number and location of monitors

should be determined based on an assessment of plant locations prone to H2S

emission and occupational exposure;

Decommissioning/Sit

e Closure

Mitigation measures to address the air quality impacts resulting from vehicular

movement, operation of heavy construction machineries and material handling

are similar to those discussed above and are not detailed out separately in this

section.

B. Control of Noise and Vibration


Construction of well

site, surface facilities

and pipeline laying

Selection and use of low noise generating equipment equipped with engineering

controls viz. mufflers, silencers etc.

All vehicles utilized in transportation of raw material and personnel will have

valid Pollution under Control Certificate (PUC)

Periodic preventive maintenance of DG sets and vehicles will be carried out as

per manufacturer’s schedule to ensure compliance with noise limits specified by

CPCB for vehicles and DG sets.

All high noise generating equipment’s will be identified and subjected to

periodic preventive maintenance.

No night time operation of vehicles and construction activities will be

undertaken.

Engines of vehicles and construction equipment to be turned off when not in use

for long periods.

Drilling, CBM

production,

Completion, GCS

operations

Siting of drilling rig and surface facilities away from sensitive receptors viz.

schools, settlements etc. with all reasonable screening being utilized where

necessary.

Installing acoustic enclosures and muffler on engine exhaust of DG sets to

ensure compliance with generator noise limits specified by CPCB.

Carry out preventive maintenance of compressors to be undertaken in

accordance to “OISD-STD-120- Inspection of Compressors”




Relevant guidelines/standards viz. API 615--Sound Control of mechanical

equipment etc. will be followed in controlling noise generated from mechanical

equipment’s and machineries.

Setup effective noise barrier at the fence-line of the site;

Restrict all noise generating operations ,except drilling, to daytime;

Periodic monitoring of noise levels on site and nearby receptors to ensure

compliance with Noise Pollution (Regulation & Control) Rules 2000.

Decommissioning/Sit

e Closure

Management measures to address noise impacts with respect to operation of

heavy equipm e nt’ s/m a chine ries and movement of vehicles during

decommissioning/site closure phase are similar to those discussed in the

“Well site & surface facility construction” of this section

C. Prevention and Control of Soil Quality Impacts



site,surface facilities and

pipeline laying

Site preparation and road strengthening/widening activities to be restricted

within defined boundaries.

Avoid construction activities during monsoon season as moist soil is most

susceptible to compaction.

Use appropriate machinery and/or protective boarding during top soil

stripping to ensure minimum compaction.

Debris and excavated material generated during construction activities to be

stockpiled in designated areas onsite. No material to be disposed in adjacent

land surrounding the site boundary.

For cleared areas, retain top soil in stockpile where possible on perimeter of

site for subsequent re-spreading onsite during restoration.

Install and maintain effective run-off controls, including silt traps, straw

barriers etc. so as to minimize erosion.

Drip trays to be used during vehicular/equipment maintenance and during

refueling operations.

If any industrial effluent is flowing over the ROU or any environmental

change is noticed on the ROW, the soil samples shall be tested for

determining the efficacy of the existing coating and wrapping of the pipeline.

Drilling, CBM production,

Completion, GCS

operations

Fuel and chemical storage areas will be paved and properly bunded. Bunded

areas will be designed to accommodate 110% of the volume of spilled

material.

Spill kits will be made available at all fuel and chemical storage areas. All

spills/leaks contained will be reported and cleaned up immediately.

Drip pans/trays will be used in areas identified having spillage potential but

not limited to drill rig engine; electric generator engine; pumps or other

motors; maintenance areas; fuel transfer areas.

Management of drill cuttings, waste drilling mud, waste oil and domestic

waste will be made in accordance with “Waste Management Plan”.

Reuse of CBM produced water for irrigation will be carried out in

accordance to the “Produced Water Management Plan”

Decommissioning/Sit

e Closure

Proper backfilling and reinstatement of the pipeline and wells (after

production of gas) to be carried out in accordance with the “Pipeline

Reinstatement & Well Site Post Closure Plan” to be developed by ONGC.



D. Prevention and Control of Surface Water Quality Impacts



site , surface facilities

and pipeline laying

Minimize clearing and construction activities during monsoon season (as far as

practicable).

Construction work close to the streams or water bodies will be avoided during

monsoon

During site preparation and construction, surface water run-off will be managed

through implementation of proper drainage system onsite.

Sediment filters and oil-water interceptor will be installed by the Contractor to

intercept run-off and remove sediment before it enters water courses.

Construction of pipeline water crossings is to be governed by provisions

outlined in section 16.10 of “OISD-STD-141- Design & Construction

Requirements of Cross Country Hydrocarbon Pipelines”.

Selection of low toxicity corrosion inhibitors in the preparation of hydrotest

water for pipeline.

Run-off discharges to natural drainage channels/water bodies will conform to

CPCB Inland Water Discharge Standards.

Regular inspection of surface water drainage/diversion system and sediment

controls.

Drilling, CBM

production,

Comple tion , GCS

operations

Run-off from vehicular wash and chemical storage areas will be channeled

through closed drainage system provided with an oil-water separator prior to

disposal to nearby drainage channels/surface water bodies. Spill kits will be

made available in these areas.

Drip trays will be used during preventive maintenance of vehicles and

machineries.

Hazardous chemicals and fuel drum will be stored in bunded and lined area

equipped with proper spill control equipment.

During dewatering, care shall be taken to properly dispose the produced water

in order to avoid pollution, damages to fields under cultivation and/or existing

structures and interference with the traffic in accordance to “Produced Water

Management Plan”

Management of drill cuttings, waste drilling mud, waste oil and domestic waste

will be made in accordance with “Waste Management Plan”

Decommissioning/Sit

e Closure

No significant impacts to surface water quality can be associated with activities

during decommissioning/site closure phase. Any possible impacts that may arise

due to surface run-off will be mitigated in manner similar to that discussed

during aforesaid activities.

E. Prevention and Control of Ground Water Quality Impacts


Construction of well site,

surface facilities and

pipeline laying

No significant impact on the groundwater quality can be associated with

construction phase activities.

Drilling, CBM

production, Completion ,

GCS operations

The wells will be sited at a sufficient distance away from an existing tube well

or open well.

Water supplies will be obtained through authorized vendors.

Proper casing and cementing of exploratory well will be done to prevent

contamination of sub-surface aquifers in accordance to OISD-STD-175-

Cementing Operations.



Project Phase Mitigation measures Period inspection and testing well casing and tubing to be undertaken in

accordance to OISD-GDN-219 - Guidelines on Field Inspection, Handling and

Testing of Casing Pipe & Tubing.

Water based mud to be used, if required as a drilling fluid for the proposed

project.

Selection of low toxicity chemicals/additives in the preparation of water based

mud and “frac fluid” for hydro-fracturing

Periodic monitoring of ground water quality and levels will be carried out for

village wells located outside the project boundary to assess the level of ground

water contamination and depletion, if any.

Storage and disposal of drill cutting and waste mud to be made in accordance

with “Solid & Hazardous Waste Management Plan”

Decommissioning/Sit

e Closure

No significant impacts on groundwater quality can be associated with

activities during decommissioning/site closure phase

6.1.2 Waste Management Plan

Scope

The Waste Management Plan is applicable for all process and non-process waste streams,

which are generated during various phases of ONGC’s proposed project activities. The major waste streams covered under this plan includes drill cuttings, waste drilling mud, produced water, cuttings washwater, kitchen waste and sewage. In addition waste oil generated from the

proposed project operations have also been dealt in this plan. However storage, handling and reuse/disposal options of CBM produced water have been discussed in a separate plan viz.

“Produced Water Management Plan”

Purpose

The WMP establishes specific measures to ensure proper collection, storage, treatment and disposal of the identified process and non-process waste streams in accordance with the

applicable national regulations and guidelines24 and also to ensure compliance with ONGC’s corporate HSE Policy. The plan also outlines the roles and responsibilities of both ONGC and

the contractors involved in the implementation of the plan.

Mitigation Measures

The following mitigation measures need to be adopted and implemented by ONGC and its

contractors for the major waste streams identified in the plan.

Table 6-2: Mitigation Measure for Waste Stream

Waste Quantity Mitigation Measure Drill Cuttings 50-55m3/well Drill cuttings separated from drilling fluid will be adequately

washed and temporarily stored and disposed in an impervious pit

lined by HDPE.

The drill cuttings pit will be bunded and kept covered using

tarpaulin sheets during monsoon.

Periodic monitoring and analysis of drill cuttings to be

undertaken to establish its nature and characteristics.

24 “Guidelines for Disposal of Waste – CPCB Oil & Gas Extraction Industry Standard” – EPA Notification

[GSR 176(E), April 1996]

“Guidelines for disposal of Solid Waste, Drill Cuttings and Drilling Fluids for Offshore & Onshore

Drilling Operation” –MoEF Notification, 30 th August 2005



Waste Quantity Mitigation Measure

The waste pit after it is filled up shall be covered with impervious

liner over which a thick layer of native top soil with proper top

slope shall be provided.

Feasibility study for use of drill cuttings for lining or capping of

landfill sites, or as a road construction material in consultation

with nodal authorities.

Kitchen Waste Minimal

quantities

The waste will be segregated and stored in designated waste bins.

All such waste bins will be properly labeled and covered.

The kitchen waste will be disposed in nearest municipal dumping

site on a daily basis through approved waste handling contractors

Waste oil

Used oil

- The hazardous waste (waste and used oil) will be managed in

accordance with Hazardous Waste (Management, Handling &

Transboundary Movement) Rules, 2008.

The hazardous waste will be stored in properly labeled and

covered bins located in paved and bunded area.

Necessary spill prevention measures viz. spill kit will be made

available at the hazardous material storage area

Storage details of onsite hazardous waste generated to be

maintained and periodically updated.

Adequate care will be taken during storage and handling of such

waste viz. use of proper PPEs by personnel

The hazardous waste so stored will be periodically sent to State

Pollution Control Board registered waste oil recyclers/ facilities.

Proper manifest as per HWMH rules will be maintained during

storage, transportation and disposal of hazardous waste.

Sewage 5.2KLD The sewage generated will be treated in a combination of septic

tank and soak pit.

Regular supervision will be undertaken for the domestic waste

treatment system to report any overflows, leakage, foul odour etc. Recyclables viz.

paper, plastic etc

Depe nding on

usage

Proper segregation and storage of recyclable waste in designated

bins onsite.

Recyclables will be periodically sold to local waste recyclers.

In addition to the management measures specified for the major waste stream, ONGC will

prepare a waste management inventory of all the waste streams identified for the proposed

project and will be periodically updating it through contractors. Necessary measure will also

be taken by ONGC to incorporate appropriate waste management and handling procedures in

the contractor work document and conduct periodic training of personnel involved in waste

handling onsite to ensure proper implementation of the WMP. In this regard, necessary

inspection, record keeping, training program and monitoring procedures will be established by

ONGC and made operational to achieve proper management of all wastes generated on site.

6.1.3 Produced Water Management Plan

Scope

The produced water management plan encompasses the potential beneficial reuse/disposal

option for produced water generated during development/production well dewatering

operations.

Purpose

The plan outlines specific measures to be adopted and implemented by EOL assess and

evaluate the feasibility of potential beneficial reuse/disposal options viz. discharge of surface



water, irrigational use, industrial use etc. during dewatering. This also includes necessary

considerations to be made by ONGC in availing the selected produced water management

option based on such evaluation.

Mitigation Measures

CBM produced water quality from existing pilot cum production well shows very high value

of Sodium, Fluoride and SAR (refer Table 7-3) exceeding on-shore discharge standard of oil

drilling and gas extraction industry25 and irrigation water quality standard (IS 11624- 1986).

Thus, CBM Produced Water would be treated through Multistage Reverse Osmosis (RO)

System to meet on-shore discharge standard and irrigation water quality standard. RO treatment

plant would be available at each of the GCS or may be developed for a cluster of GCS

depending on the number of production wells, CBM production schedule and accessibility.

Table 6-3: Produced Water Quality Parameter And Discharge Standard

S. N.

Parameter

Produced Water quality Discharge standard

(not to exceed)

1 TSS 26-23mg/l 100 mg/l

2 TDS 1135-1130mg/l 2100mg/l

3 Sodium 420-435mg/l 60 mg/l

4 SAR 37.34-38.68mg/l 26

5 Floride 5.59-5.51mg/l 1.5 mg/l

Management of CBM Produced water in Raniganj CBM Block is based on three element viz.

Collection and Transport, Treatment and Reuse/Discharge.

COLLECTION AND TRANSPORT

1. Water produced from each production well would be collected at water collection

pit within the well site.

2. From water collection pit, produced water will be transported to GCS site through

pipeline (3” dia). However, when the quantity of produced water will fall down,

water will be transported to the GCS site through tanker.

3. Within the GCS facility, water will be primarily stored in a water storage tank before

the water being sent for treatment.

TREATMENT

The treatment chain of Produced Water is described here below:

Pre-treatment: The total quantity of Produced Water will be treated through Pre-treatment

system which will remove fluoride to less than 1.5 mg/l. The treatment system will consist of

Activated Carbon Filters, Micron Cartridge Filters to remove sediment and Suspended Solids

at various stages.

Multi-stage RO Treatment: After Pre-treatment, the water will be passed through Multi-stage

RO system to bring the sodium below 60mg/l. High pressure pumps will boost the pressure of

25 The Environment (Protection) Rules, 1986



the water and then fed to the RO System. RO permeate shall be collected in permeate storage

pits from where it can be transferred to end use or for discharge. A schematic flow chart of

produced water treatment is provided in below Figure 7.1.The produced water analysis has

been provided in Annexure IV

REUSE/ DISCHARGE

Treated Water ONGC will consider following two options for discharge of treated water.

Option 1 – Irrigation Use

Quality of treated water will meet BIS Irrigation Water Standards (IS: 11624- 1986).

ONGC will identify the regulatory requirement and assess the potential for usage of produced

water for irrigation in coordination with relevant stakeholder’s viz. Irrigation Department,

Water Resources Department, local agricultural communities etc.

Option 2 – Surface Water Discharge

Quality of treated water will meet on-shore discharge standard of oil drilling and gas

extraction industry of The Environment (Protection) Rules, 1986.

ONGC will accurately characterize the quantity and quality, assimilative capacity26 and

total maximum daily load (TMDL)27 of the concerned surface water body in order to

discharge maximum volumes of produced water in conformance with CPCB General

Discharge Standards.

ONGC will obtain historical and real-time stream-flow data from selected gauging

stations for managing a flow-based discharge plan whose discharge rate is tied to

current stream-flow in the receiving stream.

ONGC will select appropriate transportation option (pipeline, tankers etc.) for discharge

of treated water into water body/stream etc. (e.g., Damodar River, Ajay River etc.).

RO reject

ONGC will consider following two options for disposal of RO reject.

Option-I: Option shall be explored to use the Reject water for dust sprinkling in the nearby

Opencast Coal Mines.

Option-II: This reject amount of water will be brought in to evaporation tank and evaporated.

In that case the evaporation will be fitted with HDPE liner.

Option-III: In general, deep well injection is the preferred means of disposal for coal bed

methane produced water in oil and gas industry and the same should be followed in case the

other two options mentioned above is not found feasible.

26This is a measure of the volume of contaminants that can be discharged to a stream

without exceeding relevant standards or limits. 27TMDL is a summation of the various pollutant loadings to a stream segment.



Figure 6-1: Schematic Diagram – Produced Water Treatment Using Reverse Osmosis (RO)



6.1.4 Road Safety & Traffic Management Plan

Scope

The Road Safety & Traffic Management Plan is applicable to all operation pertaining to ONGC

and contractor vehicular movement viz. vehicle involved in the transportation of raw materials,

project and contractor personnel, heavy equipment transportation to well site and

decommissioning.

Purpose

The Road Safety & Traffic Management Plan outlines specific measures to be adopted and

implemented by ONGC to mitigate any potential impact on community health and safety that

may arise from movement of vehicles and transportation of drilling rig and heavy equipment’s

during site preparation, drilling and decommissioning activities.

Mitigation Measures

Project vehicular movement involved in sourcing and transportation of borrow

material will be restricted to defined access routes to be identified in consultat ion

with locals and concerned authorities.

Proper signage will be displayed at important traffic junctions along the predefined

access routes to be used by construction and operational phase traffic. The signage

will serve to prevent any diversion from designated routes and ensure proper speed

limits are maintained near village residential areas.

The condition of roads and bridges identified for movement of vehicles and drilling

rig will be assessed by ONGC and civil contractor to ensure their safe movement.

Precautions will be taken by the contractor to avoid damage to the public access

routes including highways during vehicular movement.

Contractor will provide safe and convenient passage for vehicles, pedestrians and

livestock to and from side roads and property accesses connecting the project road.

Work that affects the use of side roads and existing accesses will not be undertaken

without providing adequate provisions.

Any road diversions and closures will be informed in advance to the villagers who

are accessing the defined routes.

Traffic flows will be scheduled wherever practicable during period of increased

commuter movement.

Clear signs, flagmen & signal will be set up at major traffic junctions and near

sensitive receptors viz. primary schools in discussion with Gram Panchayat and local

villagers.

Movement of vehicles during night time will be restricted. Speed limits will be

maintained by vehicles involved in transportation of raw material and drilling rig.

Regular supervision will be done by contractor to control vehicular traffic movement

along defined traffic routes particularly near identified sensitive receptors.

A Journey Management Plan will be formulated and implemented by the contractor

to control construction and operational phase traffic.



Routine maintenance of project vehicles will be ensured to prevent any abnormal

emissions and high noise generation.

Adequate training on traffic and road safety operations will be imparted to the drivers

of project vehicles. Road safety awareness programs will be organized in

coordination with concerned authorities to sensitize target groups viz. school

children, commuters on traffic safety rules and signages.

6.1.5 Occupational Health & Safety Management Plan

Scope

The Occupation Health & Safety Management Plan (OHSMP) is applicable for all project

operations which have the potential to adversely affect the health and safety of contractor

workers and onsite personnel.

Purpose

The Occupation Health & Safety Management Plan (OHSMP) have been formulated to address

the occupational health and safety related impacts that may arise from proposed project

activities viz. operation of construction machineries/equipment’s, storage and handling of fuel

and chemicals, operation of drilling rig and associated equipment, operation of GCS during

production drilling and decommissioning/site closure.

Mitigation Measures

All machines to be used in the construction will conform to the relevant Indian

Standards (IS) codes, will be kept in good working order, will be regularly inspected

and properly maintained as per IS provisions and to the satisfaction of the site

Engineer.

Onsite occupational health and safety risks will be managed in accordance relevant

OISD standards viz. OISD-GDN-192 – Safety Practices During Construction

Contractor workers involved in the handling of construction materials viz. borrow

material, cement etc. will be provided with proper PPEs viz. safety boots, nose

masks etc.

Occupational safety risks associated with drilling rig, well workovers &

stimulations, gas lifting etc. will be managed in accordance with relevant OISD

standards viz. OISD- GDN-193 - Guidelines for Gas Lift Operations and

Maintenance, OISD-GDN-182 - Recommended Safe Procedures & Guidelines For

Workover and Well Stimulation Operations, OISD-GDN-218 - Guidelines For Safe

Rig- Up And Rig- Down Of Drilling And Work-Over Rigs

No employee may be exposed to a noise level greater than 85 dB(A) for a duration

of more than 8 hours per day. Provision of ear plugs, ear muffs etc. and rotation of

workers operating near high noise generating areas.

All chemicals and hazardous materials storage container will be properly labeled and

marked according to national and internationally recognized requirements and

standards. Materials Safety Data Sheets (MSDS) or equivalent data/information in

an easily understood language must be readily available to exposed workers and

first-aid personnel.



The workplace must be equipped with fire detectors, alarm systems and fire-fighting

equipment. The equipment shall be periodically inspected and maintained in good

working condition.

Health problems of the workers should be taken care of by providing basic health

care facilities through health centres temporarily set up for drilling base camp.

Periodic occupational health surveillance programs will be implemented in

accordance to “OISD-GDN-166 - Guidelines for Occupational Health Monitoring

in Oil and Gas Industry”

The sewage system for the camp must be properly designed, built and operated so

that no health hazard occurs. Adequate sanitation facilities will be provided onsite

for the operational workforce both during construction and operational phase of the

project.

Training programs will be organized for the operational workforce regarding

proper usage of PPEs, handling and storage of fuels and chemicals etc in accordance

to OISD- STD-176 - Safety Health & Environment Training for Exploration &

Production (Upstream) Personnel.

6.1.6 Management of Social Issues and Concerns

ONGC during its initial stages of exploration and drilling has implemented CSR activities in

the region, the details of which has been provided in Annexure XXV. Mitigation measure have

been outlined to address project related social issues and concerns in order for ONGC to take

proactive steps and adopt best practices, which are sensitive to the socio-cultural setting of the

region.

Providing Job Opportunities

During site construction non technical jobs will be generated. Most of the people employed

during this stage would be semi-skilled. People from adjoining areas especially land losers

would be given preference through local contractors according to the skill sets possessed.

Ensuring Public Safety

Since the project involves the movement of heavy vehicles and machineries in the area, the

issue of public safety of the villagers, especially children, is an important concern. During the

drilling phase and for the rest of the project activities proper safety measures will be undertaken

both for transportation as well as the other operations. The drill site would be fenced and gates

would be constructed so that the children are refrained from straying into the site.

The movement of traffic is also likely to disrupt access conditions of the inhabitants residing

close to the approach road. The increase in traffic would have implications on their safety too,

as well as create congestion, potential delays and inconvenience for pedestrians. The mitiga t ive

measures in this regard have been discussed in detail under the Road Safety & Traffic

Management Plan (Section 7.1.4).

Common Property Resources

During the project tenure there might be some sharing of resources viz. land, water, access

routes etc. by the villagers and the contractor workforce. Prior to the commencement of the



proposed activity, a consultation program will be conducted by ONGC with the target groups

and local authorities. The primary objective of such consultation will be to share with the

concerned villagers/stakeholders the objective of the proposed project, associated impacts and

their mitigation. The movement of heavy vehicles and machineries and laying of pipeline might

lead to conditions like disruption of electric wires and telephone wires in along vehicular

transportation and CBM pipeline evacuation routes. These public utilities will be restored back

to normal conditions, at the earliest.

6.1.7 Site Closure Plan

The post project closer plan for the CBM Raniganj operation in Burdwan and Bankura district

is attempt to identify all the activities which would be performed during the restoration of a

particular site in case the well is not economically viable or when the production from that well

has ceased and no further use of that particular well bore is envisaged. Along with the well site

the approach road (if any) and the pipeline connecting the well will be restore accordingly.

Chronological inventory of activities which would be performed during the closer of the site

are detailed in this section. The following activities have been considered in the closure plan:

Plug & Abandon the well: Close the well head properly to prevent any further leakage

Isolation of the Pipeline: The pipeline connected with abandon well need of to

be isolated.

Decommissioning Phase : Removal of the materials form the site

Reinstatement Phase: regeneration of the land

Handover Phase : Returning the land to the original owner

Plug & Abandon the well

As and when the well will be declared as non-productive a list of activities will be performed

to close and abandon the well to prevent any leakage of gas. The following steps will be

performed to plug and abandon the well.

Well history Identification: Type of the drilling performed i.e. either vertical or horizonta l,

casing details of the well with depth, performance depth of the well. Perforation depth

identification.

Well Killing: Pumping of the kill fluid / mud or water in to the well through annulus. Protocol

for well killing is as followed:

a. Connect the pump discharge hose end with the annulus valve flange. b. Initially close all the valves (echo side valve, gas flow line valve and water flow line

valve)

c. When started pumping open the echo side valve only keeping rest of the valves closed. d. Check the pump discharge pressure frequently so that the discharge lines are within

the safe limit. e. Once the pump discharge pressure come back to normal stop pumping. f. Close the echo side valve and open the gas flow line valve.

g. Wait for 30 minutes and check the annulus pressure. h. If the pressure is 0 PSI and there is no flow of gas then proceed further, if not repeat

the procedure again. i. Remove the surface lines but keep both the annular valves fitted. j. Remove the Drive head from Flow-Tee.



Placement of Cement Plug:

a. Pull out all the down hole assembly (pump) from the well.

b. Water to be used as spacer pumped. c. Followed by Cement slurry pumped in the well.

d. The cement slurry is displaced with water and placed at the desired depth to cover the coal seams.

e. The set cement plug is pressure tested.

Monitor the pressure as it should not exceed 2500 PSI

Hold the pressure for about 30 minutes

f. Run in hole tubing string with sharp edge and set bottom at the 1 M above the

top perforation. g. Wash the inner side of the tubings by reverse circulation. h. Pull Out the remaining tubings and set bottom.

i. Wash the internal side of the tubing after pull out.

Isolation and Blinding Off the Pipeline

The pipeline connected with the facilities will be abandoned by putting end cap at both side of

the pipeline. The section of the pipeline will be purged by Nitrogen to remove all reactive

media before capping. The pipeline will be either buried permanently or removed from the

ground and restore the ground accordingly.

Restoration of Surface Facilities

All the surface facilities will be dismantled and removed from the abandoned site.

Decommissioning

The decommissioning phase includes activities which are limited to the removal of

construction fill material form site and storage in the Material Dumping Area. The activit ies

which are envisaged during this phase are:

Waste Management: clean up the site and remove all waste materials e.g. HDPE

liners, any waste material etc. The waste will be dumped in the designated area as per the guidelines of local pollution control board.

Removing & Dumping of Fill Materials: The fill materials (aggregates, morrum etc) should be removed mechanically from the site. It will be used for the local road preparation or dumped in the designated area as filling material.

Road Restoration: The fill materials should be removed and restore the site or it may be left for further local community use as per the agreement with community.

Reinstatement

The reinstatement phase includes all activities for preparation of the soil for agriculture use (if

the land is an agricultural land before operation):



Sub soil preparation: All stones and other foreign material which are visible on

the ground would be removed. The sub soil would be tilled till a depth of 6”

to de- compaction the soil.

Overlaying of Topsoil: The topsoil would be spread evenly on each of the terraces

as per the thickness specified by the applicable guidelines.

Top soil preparation: The bio manure will be mixed with the top soil to increase

its fertility (if required). Regular water with mulching will be carried out for more

effective soil preparation.

If the preserved top soil volume found less than the required volume than make up

top soil will be out sourced from soil from pond bottom etc.

Seeding of Soil: Seeds of Leguminous crops would be sown on the plots to

continuously improve fertility of the soil and also presenting visual proof of

restoration to the community.

Testing of fertility: The soil would be tested for fertility as per the standard

procedure of ICAR and compared to the fertility values done during the Pre

Project Baseline Environment Assessment.

Laying of Plot Dividers: The Plot dividers would be put in place as it was before

operation. Sub soil would be used for preparation of the dividers and would be

seeded with grass to hold it in place.

Hand Over

These would include all activities to be undertaken for the closing of the land agreement and

then handing it over to the original owner.

6.1.8 Wildlife Management Plan

Scope

Likely impacts of project activities on ecological habitats and their mitigation measures are

addressed below.

Purpose

The purpose of Wildlife Management Plan is to minimize impact on natural habitat in the form

of vibrations, noise and flaring etc. from drilling operations and controlling of (any) adverse

impact of discharging of untreated waste water from drilling operation and storm water from

the well site to the nearby natural drainage channels, ponds and river. Management Plan details

out mitigation measures and strategies to be adopted by the project proponent and contractors

during each phase of the project, at the same time establishing a monitoring network to

investigate effective implementation of the Management Plan.

Mitigation measures

Care will be taken during finalization of drilling areas and location will avoid village woodlots etc.

Care would be taken to locate the drilling areas away from the village ponds, streams, forests and rivers.



Due diligence inspections will be undertaken prior to selection of drilling sites to ensure

minimal impact.

Drill site will be properly fenced (chain-linked) to avoid straying of outsider or animals;

No temporary electric supply connection line from the grid will be laid for the proposed project activity. All electrical requirements will be supplied from internal DG sets.

Noise levels at drill site will be controlled through selection of low noise generating equipment and installation of sufficient engineering controls viz. mufflers, silencers etc.

Drill cutting and other drilling waste should be stored in HDPE lined pit within the drill site.

The Environment Compliance Officer will conduct training programs for all ONGC employees and its contractor on the subject of applicable practice and mitiga t ion

measures contained within ‘Wildlife Management Plan’.

6.1.9 Cultural Heritage Management

Possible impact on cultural and historical resources is anticipated primarily during the project

construction phase, following site excavation and movement of vehicles. Since, no monuments

and archeological site is present within or near the proposed block, ONGC need not take any

permission from any regulatory body for carrying out drilling operations in this block.

However, there are few cultural/historical spots like old temples in the block. Necessary

precautions will be taken during the movement of trucks and other vehicles carrying

equipment’s and machineries and personnel to the site.

Prior to commencement of site construction activities, location of culturally important

properties (old temples) will be communicated to the contractor. Thus, any significant impact

due to project activities on the cultural environment of the block is unlikely. Hence, necessary

mitigation measures need to be adopted and implemented by ONGC during site preparation

and drilling phase of the project. This includes:

Cultural important areas within the block (old temples) will be geographically mapped

and communicated to the contractor.

Consultations will be held with local communities in areas of identified cultura l

importance prior to the commencement of operations.

Reporting protocol will be established by the Contractor to communicate any chance

sighting during site preparatory and pipeline trenching activities to the onsite project

personnel.

6.1.10 Social Action Plan

The table below depicts the social action plan framed for ONGC after detailed community

consultations on the problems faced by the lack of infrastructural facilities in the area which

would serve as indicators for CSR initiatives.



Table 6-4: Social Action Plan

S.N Concerns Action plan for ONGC

1

Some villages do not have schools for

higher education, however all villages

have primary schools.

ONGC will ensure to facilitate infrastructural facilities for

setting up high schools and also improve the quality of

education in the existing schools.

2

The study area villages do not have

satisfactory medical facilities, which is a

major problem among the locals.

A mobile public health facility will be provided by ONGC

as an aid during times of urgency.

3

The villagers are dependent on coal

mining and other factories set up in the

neighboring area like the Jamuria

Industrial area, Raniganj coal field ,

Durgapur Steel plant for their survival,

though small percentage are dependent on

agriculture for their livelihood. Hence,

ONGC should expand livelihood

opportunities of the locals in the study area

villages.

ONGC should empower economically weak and

marginalized population in the study area through skill

based training with linkages for income generation.

4

The villagers do not have easy access to

market facilities

ONGC should take initiative in opening small to medium

stores with the help of local Self Help Groups (SHG’s ),

which would supplement the needs of the locals.

5

Drill site run off is a major problem for

locals which affects their croplands.

ONGC will ensure that the well pad is constructed on a

higher elevation. Waste generated should be stored in a

lined pit so that the surrounding farms are not affected.

6.2 ENVIRONMENTAL MONITORING PROGRAM

Monitoring is one of the most important components of a management system. Continuous

monitoring needs to be carried out for regulatory requirements, to monitor the environmenta l

quality and to determine performance of proposed mitigation measures. Monitoring indicators

have been developed for each of the activity considering the mitigation measures proposed.

Indicators have been developed for ascertaining the environmental quality and the performance

of the EMP implementation through Environmental Quality Indicators (EQI’s) and

Environmental Performance Indicators (EPI’s) respectively which focus not only on

quantifying or indexing activity-environment interactions that may potentially impact the

environment but at the same time also help in comparing different components of

environmental quality against previously established baseline values. Monitoring results would

be to be documented, analyzed and reported internally to Head - HSE. Monitoring requirements

have been described in the following Table 7.4



6.3 EMP BUDGET

The tentative budget for implementation of the environmental management plans has been

provided below:

Table 6-5: Tentative Budget for EMP Implementation

S.N

Particulars of Work (Yearly Budget) Budget (in Rs.)

for 3 years

1 Air Quality Management Plan

A

Dust Suppression through water sprinkling in the internal unpaved roads @ Rs.

10000/month x 12 months

3.6 lakhs

B Maintenance of paved internal road and transport route (budgetary provision is

included in operational cost of drilling)

0

C Ambient Air Quality Monitoring -10 monitoring location x 4 samples per month x

12 months (@ Rs. 6000 per sample )

86.4 lakhs

D Stack emission monitoring (@ 6000 per sample x 80 sites x 3 DG sets x once

during drilling)

14.4 lakhs

2 Noise Monitoring

A Ambient Noise Monitoring – 10 locations, once in a month (@Rs. 2500 per

sample)

9.0

B Workplace noise monitoring -7 locations per well, twice during drilling (@Rs.2500

per location x80 sites X 7 locations x twice during drilling)

28.0

3 Water Quality Monitoring

A

Surface Water Quality Monitoring (@ Rs. 6000 x 5 samples from natural drainages

for four seasons, 2 from ETP and 1 from oil/water separator from 80 wells once

each during drilling)

20.8 lakhs

B

Ground Water Quality Monitoring (@ Rs. 6000 x 5 locations x 12 months)

10.8

4 Soil Quality Monitoring

A

Soil quality monitoring (@ Rs. 6000 x 6 samples -once each before and after

drilling and for emergency sampling during accidental spill over during Site

construction, drilling)

1.4

5. Road Safety & Traffic Management

A Signage in the transport route & its maintenance (Rs. 100,000 + Rs. 10,000 ) 1.3

B Deployment of traffic personnel in sensitive area – 15 persons (@ Rs. 6000 per

month x 12 months x 15 persons )

32.4

6 Surface Runoff & Soil Erosion Control

A Two chamber sedimentation tank at each drill site (Budgetary provision is already

included in the infrastructure development cost)

0

7 Municipal Solid Waste

A Provision of two chambered covered collection bins at well site – 5 nos 0.5

B Transport arrangement of waste from well sites to dumping area 12

8 Hazardous waste management

A

Construction of dedicated hazardous storage area and record maintenance

(construction included under project cost; only maintenance included in this

budget)

15

B

Drill Cutting, waste mud and washwater pits; HDPE lined (budgetary provision in

operation cost of drilling)

0

9 Surface and Ground Water Protection and Management

A

Surface runoff control measures for chemical storage area, fuel storage area

(budgetary provision is already taken care in earlier section)

0



B

Paved /impervious storage area for chemical storage area, fuel & lubricant storage

area (Budgetary provision is already included in the infrastructure development

cost)

0

C

Domestic waste water treatment facility through septic tank & soak pits at the drill

sites (budgetary provision in operation cost of drilling)

0

D Commissioning and operational cost of ETP (commissioning cost 20 lakhs for 5

ETP; operational cost Rs. 10000 per well X 80 sites)

28

10 Occupational Health & Safety Management

A

Provision of appropriate PPE to all workers and its maintenance (budgetary

provision is included in operational cost of drilling)

0

B Provision of drinking water, sanitation facility for all workers (budgetary provision

is included in operational cost of drilling)

0

C

Provision First aid facility (budgetary provision is included in operational cost of

drilling)

0

D Provision of Ambulance facility (ONGC has its own ambulance facility) 0

E Regular health checkup facility (provided by ONGC for workers) 0

F Regular occupational health & safety training 15

Total COST OF IMPLEMENTATION OF EMP 278.6 lakhs

CSR Activity 2% of profit

EIA Study for development of CBM activites in Raniganj CBM block


Table 6-6: Environmental Monitoring Program

A) Environmental Performance Monitoring

EI No.

Environmental Indicator (EI)

Monitoring Parameter Location

Period & Frequency Responsibility

A Approach Road & Site Development A.1 Air emissions from vehicles and

machineries

CO, HC based on emission factors

% of vehicles possessing valid PUCC

Certificates

Exhausts Half yearly during

site development

Site HSE Manager

A.2 Dust generated site and pipeline

RoU clearance/leveling

Visual observation Site & approach road

Pipeline corridor

Daily during site

preparation

Site HSE Manager

through contractors

A.3 Noise emissions from vehicles

and machineries

Noise pressure level in dB(A) near noise

sources (5m)

Site & approach road

Pipeline corridor

Monthly during site

preparation

Site HSE Manager

through contractors

B Pipeline Hydro Testing

B.1 Disposal of Hydro test water Quantity of waste water generated

CPCB General discharge parameters

Disposal point Once before disposal Site HSE Manager

through contractors

B.2 Reuse of water Quantity of water reused Area of reuse Daily during hydro

testing

Site HSE Manager

C Drilling of Development and Production wells C.1 Gaseous pollutant emissions

from DG Set

Pollutant concentrations in gaseous

emissions and maintenance parameters

(air, fuel filters & air-fuel ratio) of DG sets

influencing air emissions

Emission rates of PM10, NO2, SO2 CO, HC

based on emission factors

DG Stack Once during drilling

at each site

Site HSE Manager

through Drilling

contractor

C.2 Air emissions from vehicles CO, HC concentration based on emission

factors

Exhausts Half yearly during

drilling, testing and

production

Site HSE Manager

through contractors



EI No.





Certificates

C.3 Noise emission from drilling

equipment and DG Sets

Noise pressure level in dB(A) Near noise sources (5m) Twice during drilling

at each site

Site HSE Manager

through Drilling

contractor

C.4 Waste water quantity & quality

(Process water viz. rig wash,

formation water etc)

Volume estimate

CPCB General discharge parameters and

Oil & Gas Extraction Industry Standards

At discharge point Once during drilling

at each site

Site HSE Manager

through Drilling

contractor

C.5 Storm water/wash down water

discharge

CPCB General discharge parameters and

Oil & Gas Extraction Industry Standards

At discharge point Depending on

generation

particularly during

monsoon

Site HSE Manager

through project

contractors

C.6 Drill cutting storage and disposal Total volume generated

Concentration of hazardous constituents as

per Hazardous Waste Management and

Handling Rules

CPCB Onshore discharge standards for Oil

& Gas Extraction Industry

At storage location Once during drilling

at each site

Site HSE Manager

through Drilling

contractor

D Dewatering

D.1 Produced Water drawdown Depth to water level Nearby village wells Monthly during

drilling

Site HSE Manager

through Drilling

contractor

D.2 Produced Water Disposal/Use Total volume disposed/used CPCB General Discharge Standard

Parameter

& BIS irrigation water standard parameters

At disposal/use location

At discharge point

Daily during

dewatering

operation

Site HSE Manager

through Drilling



EI No.




During dewatering

operation

E Flaring (during process upset)

E.1 Emissions from Flaring Total CO, Non-Methane Hydrocarbons,

NO2, PM10, SO2 concentrations based on

emission factors

Flare Stack During flaring Site HSE Manager

through Drilling

contractor

E.2 Release of CH4 & H2S Emission concentration Flare stack Daily monitoring

through gas detectors

Site HSE Manager

through Drilling

contractor

F Process Leaks

F.1 Release of CH4 Emission concentration Pipeline & well facilities Continuous

monitoring through

gas detectors

Site HSE Manager

G Decommissioning/Site Closure

G.1 Noise generated from heavy

machineries and vehicles

Near noise sources (5m) Site & Approach road Once during

decommissioning

Site HSE Manager

through civil

contractor

G.2 Air emissions from vehicles CO, HC concentration based on emission

factors


Certificates

Exhausts Half yearly Site HSE Manager

through civil

contractor

G.3 Top soil Visual observation Development/production

well site

Once during site

restoration

Site HSE Manager

through civil

contractor



B) Environmental Quality Monitoring

EI No.




A Approach Road & Site Development

A.1

Ambient Air Quality Measurement of PM10, SO2, NO2,

CO,H2S and HC (Methane and Non

methane)

Nearest receptor

viz. villages,

schools

Quarterly during

construction phase

Site HSE Manager

through civil

contractor

A.2 Ambient Noise quality Hearing / perception

Measurement of Noise Pressure Level in

dB(A)

Nearest receptor

viz. villages,

schools

Daily site and

road/pipeline corridor

works

Quarterly site and road

works

Site HSE Manager

through civil

contractor

B Pipeline Hydro Testing

B.1 Surface water Quality General Discharge Standard Nearest receptor

viz. natural drainage

channels, ponds etc

Once during

hydrotesting

Site HSE Manager

through civil

contractor

C Drilling of Development and Production wells

C.1 Ambient Air Quality Measurement of PM10, SO2, NO2, CO, H2S

and HC (Methane and Non methane)

Nearest receptor

viz. villages,

schools

Quarterly during

drilling

Site HSE Manager

through Drilling

contractor

C.2 Ambient noise quality Hearing / perception

Measurement of Noise Pressure Level in

dB(A)

Nearest receptor

viz. villages,

schools

Weekly during drilling

Twice during drilling

at each site

Site HSE Manager

through Drilling

contractor

C.3 Groundwater Quality Analysis of Parameters as per IS:10500 At nearest village

wells

Once during drilling at

each site

Chief-QHSE



EI No.




C.4 Soil Contamination Analysis of soil for contaminants (heavy

metals,

TPH, organics, pesticides).

In spillage areas In event of spills over an area of 10

sq.m

Site HSE Manager

C.5 Surface water Quality Analysis of Parameters as per CPCB Use-

class

Nearest receptor


channels, ponds etc

Once during drilling at

each site

Site HSE Manager

through Drilling

contractor

D Dewatering D.1 Surface Water Quality Analysis of Parameters as per CPCB Use-

class

Nearest receptor


channels, ponds etc

During discharge of

produced water

Site HSE Manager

through Drilling

contractor

D.2 Groundwater Quality Analysis of Parameters as per IS:10500 At nearest village

wells

Monthly during

dewatering

Site HSE Manager

through Drilling

contractor

D.3 Soil Productivity Fertility parameters like pH, NPK ratio,

Total Carbon,

Irrigation parameters SAR, EC, TDS,

Boron, Sodium etc

Agricultural land to

be irrigated by

produced water

During its usage as

irrigation water

Site HSE Manager

through Drilling

contractor

F Flaring (during process upset) F.1 Ambient Air Quality Measurement of PM10, PM2.5,, SOx,

NOx, CO,H2S and HC (Methane and Non

methane)

Nearest receptor

viz. villages,

schools

As and when required Site HSE Manager

through Drilling

contractor

G Process Leaks G.1 Ambient Air Quality Measurement of PM10, SO2, NO2, CO,

H2S and HC (Methane and Non methane)

Nearest receptor

viz. villages,

schools

As and when required Site HSE Manager

through Drilling

contractor



EI No.




H Decommissioning / Closure

H.1 Ambient noise quality Measurement of Noise Pressure Level in

dB(A)

Nearest receptor

viz. villages,

schools, ecological

habitat

Once during

decommissioning at

each site

Site HSE Manager

through civil

contractor

H.2 Ambient Air Quality Measurement of PM10, PM2.5, SOx,

NOx, CO, using HVS

Nearest receptor

viz. villages,

schools

Once during

decommissioning at

each site

Site HSE Manager

through civil

contractor

H.3 Top soil Quality Fertility parameters like pH, NPK ratio,

Total Carbon, etc.

Top soil storage

locations

Once before site

restoration

Site HSE Manager

through civil

contractor

H.4 Soil Quality Fertility parameters like pH, NPK ratio,

Total Carbon, etc.

Reinstated pipeline

RoU and,

production well

Once after site

restoration

Site HSE Manager

through civil

contractor



7 PUBLIC CONSULTATION

Public hearing needs to be conducted in both Burdwan and Bankura district (as block

encompasses both districts) as specified in the ToR vide F. No. J-11011/374/2013-IA II (I)

dated 5th March, 2014 and in accordance to the provision of EIA Notification 2006

According to above mentioned ToR and EIA notification, public hearing needs to be carried

out in the project area. As the proposed CBM block is located in Burdwan and Bankura district

of West Bengal; separate public hearing would be organized in both districts according to the

EIA notification dated 14th September, 2006. The draft EIA report, along with executive

summaries in English and Bengali are submitted to West Bengal Pollution Control Board

(WBPCB) for conducting public hearings in Burdwan and Bankura district. The commitments

required to issues raised during Public Hearing will be incorporated in the final EIA report

along with the financial budget. The objective of conducting public hearing is to disseminate

project related information among locals and understand and address their concerns due to

proposed project.



8 DISCLOSURE OF CONSULTANTS

Arcadis India Private Limited – specializes in the fields of energy, nuclear, environmenta l

and social sciences with offices spread across all over the world. Arcadis is the leading global

Design & Consultancy firm for natural and built assets. Applying our deep market sector

insights and our cost and project management services, collective design, consultancy, and engineering skills, we work in partnership with our clients to deliver exceptional and

sustainable outcomes throughout the lifecycle of their natural and built assets.

We are 28,000 people active in over 70 countries that generate more than €3 billion in revenues.

Within Asia we can call upon the skills and resource of almost 5000 professionals based throughout the region. We support UN-Habitat with knowledge and expertise to improve the quality of life in rapidly growing cities around the world. www.arcadis.com. Inc. Langdon

& Seah I Hyder Consulting I EC Harris I SENES

Arcadis India has been operational in India for more than ten years having Head Office in

Bangalore, Karnataka with branch offices in Noida, Kolkata, Hyderabad and Mumbai with all

supportive infrastructure necessary for project implementation.

Arcadis India has accumulated a wide body of knowledge from its National and Internationa l

Oil and Gas experience worldwide, including the EIAs for upstream oil & gas projects for

Ensearch Petroleum in Jordan, Premier Oil in Assam, Geopetrol in Andhra Pradesh, Eni India

in Andaman Sea, ONGC in Assam, Mizoram, Andhra Pradesh Oil India in Assam Cairn Energy

in Rajasthan and Gujarat, British Petroleum in West Bengal, GAIL in Tamil Nadu and Gujarat

etc.

Arcadis India was responsible for carrying out the Environmental Impact Assessment (EIA)

Study for Development Activities in Raniganj CBM Block in Burdwan and Bankura Districts

of West Bengal.

The EIA report preparation have been undertaken in compliance with approved MoEF ToR

and the information and content provided in the report is factually correct for the purpose and

objective for such study undertaken.

As on date, Arcadis India Pvt. Ltd. has been granted accreditation by the Quality Council of

India / National Accreditation Board for Education & Training (QCI / NABET) in 13 sectors

vide Certificate No. NABET/EIA/1417/SA028 valid up to July 10, 2017 which has been

further extended upto February 7, 2018 vide letter no. QCI/NABET/EIA/ACO/17/0373 dated

August 8, 2017.

ENVIROCHECK was engaged as a sub-contractor to carry out environment monitoring in the

block. ENVIROCHECK is a NABL accredited and MoEF (Govt. of India) Recognized

Environmental Laboratory under The Environment (Protection) Act-1986. The status of NABL

accreditation and MoEF approval is provided in Annexure XXI.

http://www.arcadis.com/



Annexure EIA study for development of CBM Activities in Raniganj CBM Block


List of Annexure

Annexure I: Allocation of Block to ONGC by Government of West Bengal ...........................2

Annexure II: Grant of Extension In The Period Of PEL ...........................................................5

Annexure III: Approved ToR.....................................................................................................9

Annexure IV: Produced water Analysis Report of Well No. RN#1 ........................................14

Annexure V: Geographical Coordinates of the ONGC Block ................................................15

Annexure VI: Consent to Establish And Consent to Operate ..................................................19

Annexure VII: CBM Gas Analysis Report ..............................................................................24

Annexure VIII : Drill Cutting Analysis Results ......................................................................25

Annexure IX: ONGC Periodic Medical Examination Policy ..................................................28

Annexure X: Hierarchial System of CBM development project .............................................29

Annexure XI: Metereology Data for March-June 2017...........................................................30

Annexure XII:Avg. Conc. of Ambient Air Quality Monitoring Results (MARCH –JUNE

2017) ............................................................................................................................85

Annexure XIV: Surface Water Quality Monitoring Results ..................................................116

Annexure XV: Ground Water Quality Monitoring Results ...................................................118

Annexure XVI: Traffic Monnitoring Results ........................................................................121

Annexure XVII: List Of Vascular Plants ...............................................................................122

Annexure XVIII: Stakeholder Consultations - Minutes of Meeting.....................................124

Annexure XIX: Formula Used for Calculation of Noise Level .............................................137

Annexure XX: Resources Available Onsite with the Crisis Management Team ..................139

Annexure XXI: NABET Accredition Certificate of Lab .......................................................140

Annexure XXII: Duration and Extend of Flaring ..................................................................141

Annexure XXIII: Flowing Gas Composition of Well............................................................142

Annexure XXIV: Socio-Economic Survey Questionnaire for Households...........................143

Annexure XXV: Distribution of CSR Fund in the Centres of Raniganj Area .......................145

Annexure XXVI: Rationale for Selection of Monitoring Locations .....................................146

Annexure XXVII: Summary of Public Consultation conducted in the block .......................149



ANNEXURE I: ALLOCATION OF BLOCK TO ONGC BY GOVERNMENT OF WEST BENGAL







ANNEXURE II: GRANT OF EXTENSION IN THE PERIOD OF PEL









ANNEXURE III: APPROVED TOR











ANNEXURE IV: PRODUCED WATER ANALYSIS REPORT OF WELL NO. RN#1

S N Test Parameters Unit Sampling Location & Result

1 2

29.12.11 18.01.12

1. Colour Hazen Colourless Colourless

2. Temperature 0C 25.4 24.9

3. pH at 250C ---- 7.43 7.38

4. Conductivity at 250C µS/Cm 1668 1657

5. Residual Free Clorine mg/l <0.1 <0.1

6. TDS mg/l 1135 1130

7. Calcium mg/l 3 3

8. Magnessium mg/l 4 4

9. Chloride mg/l 81 79

10. Iron mg/l 0.16 0.15

11. Arsenic mg/l <0.002 <0.002

12. Sodium mg/l 420 435

13. Sulphate mg/l 11 9

14. P Alkalinity mg/l 45 47

15. M Alkalinity mg/l 968 958

16. TSS mg/l 26 23

17. Oil and Grease mg/l <1.4 <1.4

18. COD mg/l 16 16

19. BOD [ 3 days at 270C ] mg/l <1 <1

20. Total Kjeldahl Nitrogen mg/l <0.3 <0.3

21. Sulphide mg/l <0.1 <0.1

22. Phenolic Compounds mg/l <0.001 <0.001

23. Cyanide mg/l <0.05 <0.05

24. Lead mg/l <0.05 <0.05

25. Mercury mg/l <0.001 <0.001

26. Cadmium mg/l <0.01 <0.01

27. Total Chromium mg/l <0.05 <0.05

28. Copper mg/l <0.05 <0.05

29. Zinc mg/l 0.13 0.16

30. Nickel mg/l <0.05 <0.05

31. Fluoride mg/l 5.59 5.51

32. Vanadium mg/l <0.05 <0.05

33. SAR ---- 37.34 38.68



ANNEXURE V: GEOGRAPHICAL COORDINATES OF THE ONGC BLOCK

1) SECTOR-A



A 86° 49´ 34" 23° 42´ 42"

B 86° 49´ 35" 23° 43´ 45"

C 86° 55´ 11" 23° 45´ 48"

D 86° 57´ 54" 23° 46´ 05"

E 86° 59´ 12" 23° 46´ 00"

F 86° 59´ 04" 23° 46´ 30"

G 87° 00´ 34" 23° 46´ 33"

H 87° 02´ 16" 23° 45´ 46"

l 87 3 34.78 23 45 49.45

k 87 3 57.58 23 45 36.7

j 87 4 52.52 23 45 12.62

i 87 5 18.89 23 45 5.65

h 87 5 21.08 23 44 53.69

g 87 5 42.36 23 44 43.02

f 87 5 44.75 23 44 37.09

e 87 6 13.03 23 44 30.74

d 87 6 54.84 23 44 28.97

J 87° 07´ 01" 23° 44´ 26"

S 87° 11´ 32" 23° 43´ 12"

T 87° 12´ 34" 23° 42´ 12"

U 87° 14´ 33" 23° 40´ 59"

V 87° 11´ 20" 23° 40´ 55"

W 87° 08´ 15" 23° 40´ 13"

X 87° 06´ 56" 23° 42´ 05"

Y 87° 05´ 49" 23° 41´ 40"

Z 87° 05´ 28" 23° 42´ 36"

A’ 87° 04´ 33" 23° 42´ 21"

B’ 87° 04´ 40" 23° 41´ 46"

C’ 87° 02´ 59" 23° 42´ 03"

D’ 87° 02´ 39" 23° 43´ 04"

E’ 86° 58´ 52" 23° 43´ 39"

F’ 86° 48´ 57" 23° 41´ 52"

G’ 86° 49´ 00" 23° 42´ 31"

A 86° 49´ 34" 23° 42´ 42"



2) SECTOR B:


Deg. Min. Sec. Deg Min. Sec A 87 20 24 23 38 25

B 87 18 15 23 39 04

C 87 16 50 23 38 09

D 87 15 00 23 37 47

E 87 13 34 23 36 18

F 87 10 24 23 34 43

5a 87 10 17.39 23 35 5.81

6 87 10 1.6 23 35 11

7 87 9 36.4 23 35 21.2

8 87 9 35.2 23 35 21.7

9 87 9 35.1 23 35 21.9

10 87 9 35.1 23 35 22

11 87 9 34.7 23 35 23.2

12 87 9 33.9 23 35 28.4

13 87 9 33.8 23 35 31.7

14 87 9 34.2 23 35 34.8

15 87 9 35.4 23 35 38.9

16 87 9 37.1 23 35 44.6

17 87 9 37.8 23 35 47.1

18 87 9 38.5 23 35 50

19 87 9 39.3 23 35 53.3

20 87 9 39.3 23 35 55

21 87 9 39 23 35 56.8

22 57 9 38.6 23 35 59.3

23 87 9 38.3 23 36 3.5

24 87 9 38 23 36 7.5

25 87 9 38 23 36 12.3

25a 87 9 38.45 23 36 16.1

H 87 09 11 23 36 29

I 87 08 46 23 37 08

J 87 06 44 23 37 58

K 87 07 02 23 36 18

L 87 05 50 23 35 50

M 87 05 12 23 35 17

N 87 04 50 23 35 30

O 87 03 45 23 34 00

P 87 03 20 23 33 20

Q 87 05 00 23 33 53

R 87 07 51 23 33 29

S 87 08 46 23 34 10

T 87 10 00 23 33 03

U 87 11 13 23 33 53

V 87 12 51 23 33 20

W 87 14 17 23 32 13

X 87 16 44 23 35 44

Y 87 18 10 23 36 51

A 87 20 24 23 38 25



PROPOSED RELINQUISHMENT AREAS OF RANIGANJ CBM BLOCK

A. KABITIRTHA COAL BLOCK OVERLAP, SECTOR-A



I 87° 04 08" 23° 45 ́ 51" d 87 6 54.84 23 44 28.97

e 87 6 13.03 23 44 30.74

f 87 5 44.75 23 44 37.09 g 87 5 32.36 23 44 43.02

h 87 5 21.08 23 44 53.69 i 87 5 18.69 23 45 5.65

j 87 4 52.52 23 45 12.62 k 87 3 57.58 23 45 36.7

l 87 3 34.78 23 45 49.45 I 87° 04 ́ 08" 23° 45 ́ 51"

B. RELINQUISHMENT AREA IN NORTHEASTERN PART OF SECTOR-A



J 87° 07 ́ 01" 23° 44 ́ 26"

K 87° 07 ́ 16" 23° 44 ́ 45" L 87° 06 ́ 50" 23° 45 ́ 47"

M 87° 07 ́ 51" 23° 45 ́ 57" N 87° 14 ́ 13" 23° 44 ́ 18"

O 87° 14 ́ 13" 23° 43 ́ 37"

P 87° 13 ́ 03" 23° 43 ́ 47"

Q 87° 13 ́ 11" 23° 43 ́ 15" R 87° 11 ́ 48" 23° 43 ́ 34"

S 87° 11 ́ 32" 23° 43 ́ 12"

J 87° 07 ́ 01" 23° 44 ́ 26"



C. ANDAL-BABUISOL COAL BLOCK OVERLAP, SECTOR – B

All above areas are agreed by ONGC and approved by OC, to be taken up in next SC for

acceptance and approval of GoI.

Total Area proposed for Relinquishment (km2)

SECTOR-A

(Kabitirtha + NE part) SECTOR-B

(Andal-Babuisole) Total Relinquishment

Area

36.68 (2.68+34) 1.53 38.21


Deg. Min. Sec. Deg. Min. Sec. G 87 10 00 23 36 06

25a 87 9 38.45 23 36 16.1 25 87 9 38 23 36 12.3

24 87 9 38 23 36 7.5 23 87 9 38.3 23 36 3.5

22 87 9 38.6 23 35 59.3

21 87 9 39 23 35 56.8 20 87 9 39.3 23 35 55

19 87 9 39.3 23 35 53.3 18 87 9 38.5 23 35 50

17 87 9 37.8 23 35 47.1 16 87 9 37.1 23 35 44.6

15 87 9 35.4 23 35 38.9 14 87 9 34.2 23 35 34.8

13 87 9 33.8 23 35 31.7 12 87 9 33.9 23 35 28.4

11 87 9 34.7 23 35 23.2 10 87 9 35.1 23 35 22

09 87 9 35.1 23 35 21.9 08 87 9 35.2 23 35 21.7

07 87 9 36.4 23 35 21.2

06 87 10 1.6 23 35 11 5a 87 10 17.39 23 35 5.81

G 87 10 00 23 36 06



ANNEXURE VI: CONSENT TO ESTABLISH AND CONSENT TO OPERATE

CONSENT TO ESTABLISH









CONSENT TO OPERATE:



ANNEXURE VII: CBM GAS ANALYSIS REPORT



ANNEXURE VIII : DRILL CUTTING ANALYSIS RESULTS







ANNEXURE IX: ONGC PERIODIC MEDICAL EXAMINATION POLICY

Manpower in the organization is the most important resource and maintaining their health is vital

for productivity and effectiveness. As such, promotion of health of employees in the widest sense

has become a high priority goal for the organization. ONGC has formulated a policy (effective

from 5th July 2007) on Periodic Medical Examination (PME), some important features of which are

detailed below:

S.N Type of PME Employees to be covered Periodicity

1 General PME Employees upto 45 years of age 5 Years

Employees in age group of 46 to 55 years 3 Years

Employees in age group of 56 years and above 2 Years

2 Specific PME Employees having hazard based profiles 2 Years

3 Intermediate PME

On need basis – upto 10% of employees examined in a particular year Every Year

PME will be conducted in two stages viz.

A. Laboratory tests either in-house or at empanelled lab/diagnostic center.

B. Clinical examination including interview, which will include physical parameters, spirometry,

audiometry tests, flexibility test (P4), physical evaluation of male field personnel, interview to

fill in the personal and family history sheets, psychological evaluation etc.

Procedure

Medical Officer (Occupational Health) will record the pertinent findings in Periodic Medical Profile

and simultaneously in Occupational Health System. He will record these findings in a register also

which is required to be maintained in compliance with the provisions of Indian Factories Act.

MO (OH) will issue form ‘O’ required under the provisions of Mines Act 1952, certifying the

fitness of field employees to the concerned Sectional Head and the individual. A copy of the said

document will also be kept in record at the Occupational Health Center.


SENES/K-20271/ Oct 2016 29 ONGC

ANNEXURE X: HIERARCHIAL SYSTEM OF CBM DEVELOPMENT PROJECT



ANNEXURE XI: METEREOLOGY DATA FOR MARCH-JUNE 2017

DATE : 20.03.2017 TO 21.03.2017

Recording time (hr.)

Wind Speed m/sec

Wind direction from No.

Temperature (0C)

Relative humidity (%)

Rain fall (mm)

10 1.8 330 23.0 67 NIL

11 2.2 300 24.0 63 NIL

12 1.6 300 25.0 61 NIL

13 2.0 300 27.0 50 NIL

14 1.8 300 28.0 42 NIL

15 2.2 330 29.0 35 NIL

16 1.6 300 31.0 28 NIL

17 C - 31.0 28 NIL

18 1.8 330 29.0 40 NIL

19 1.8 330 28.0 45 NIL

20 1.6 300 26.0 49 NIL

21 2.0 300 25.0 61 NIL

22 1.6 300 23.0 67 NIL

23 C - 22.0 74 NIL

0 1.6 330 22.0 74 NIL

1 1.4 300 21.0 73 NIL

2 2.0 300 21.0 73 NIL

3 1.8 300 20.0 81 NIL

4 C - 19.0 81 NIL

5 1.6 330 19.0 86 NIL

6 1.8 300 20.0 81 NIL

7 1.6 300 20.0 81 NIL

8 2.0 300 21.0 73 NIL

9 1.4 330 23.0 67 NIL

DATE : 21.03.2017 TO 22.03.2017


Wind Speed m/sec


Temperature (0C)


Rain fall (mm)

10 2.8 225 27.0 69 NIL

11 2.6 240 29.0 70 NIL

12 2.9 240 31.0 58 NIL

13 3.2 300 31.0 43 NIL 14 3.5 300 33.0 38 NIL

15 3.3 330 33.0 27 NIL 16 2.9 315 32.0 27 NIL 17 2.5 330 31.0 26 NIL

18 2.1 330 28.0 35 NIL 19 1.2 315 27.0 45 NIL

20 1.3 30 27.0 50 NIL

21 1.5 30 27.0 50 NIL

22 1.9 315 26.0 50 NIL 23 1.1 315 25.0 55 NIL

0 1.2 240 25.0 54 NIL 1 1.4 240 24.0 54 NIL

2 C - 24.0 53 NIL

3 C - 24.0 53 NIL



4 1.6 240 24.0 53 NIL

5 1.9 240 24.0 53 NIL 6 1.8 300 25.0 53 NIL

7 2.1 240 25.5 54 NIL 8 2.5 225 25.5 55 NIL

9 2.8 225 26.0 55 NIL

DATE : 22.03.2017 TO 23.03.2017


Wind Speed m/sec


Temperature (0C)


Rain fall (mm)

10 1.8 240 28.0 64 NIL

11 2.5 225 30.0 59 NIL

12 2.7 225 32.0 49 NIL

13 3.1 240 33.0 46 NIL

14 3.2 240 35.0 38 NIL

15 3.3 300 36.5 36 NIL

16 3.5 300 36.5 36 NIL

17 2.9 300 34.0 46 NIL

18 2.7 315 34.0 46 NIL

19 2.8 315 30.0 54 NIL

20 2.5 330 29.0 54 NIL

21 2.4 330 29.0 54 NIL

22 1.9 300 29.0 54 NIL

23 1.8 300 28.5 54 NIL

0 1.2 240 28.5 54 NIL

1 1.1 240 28.0 64 NIL

2 C - 28.0 64 NIL

3 C - 28.0 64 NIL

4 1.1 225 26.0 69 NIL

5

1.3

225 25.0 68

NIL

6 1.2 225 25.0 68 NIL

7 1.3 240 26.0 69 NIL

8 1.7 240 26.5 70 NIL

9 1.8 240 27.0 70 NIL

DATE : 23.03.2017 TO 24.03.2017


Wind Speed m/sec


Temperature (0C)


Rain fall (mm)

10 1.9 240 29.0 64 NIL

11 2.4 240 30.0 65 NIL

12 2.6 240 33.0 51 NIL

13 3.3 300 34.0 51 NIL

14 3.1 300 36.0 43 NIL

15

3.5

300 38.0 36

NIL

16 3.7 315 38.0 36 NIL

17 3.2 315 37.0 36 NIL

18 2.9 315 34.0 51 NIL

19 2.6 300 33.0 51 NIL

20 2.8 240 33.0 51 NIL

21 2.3 240 33.0 51 NIL



22 1.9 225 32.0 49 NIL

23 1.8 225 32.0 49 NIL

0 1.1 225 31.0 49 NIL

1 1.3 225 30.0 47 NIL

2 C - 30.0 47 NIL

3 C - 30.0 47 NIL

4 C - 30.0 47 NIL

5 1.3 240 30.5 43 NIL

6 1.5 240 30.5 43 NIL

7 1.6 240 31.0 46 NIL

8 1.8 240 31.5 44 NIL

9 1.9 240 32.0 44 NIL

DATE : 24.03.2017 TO 25.03.2017


Wind Speed m/sec


Temperature (0C)


Rain fall (mm)

10 2.2 240 27.0 47 NIL

11 2.3 300 28.0 42 NIL

12 3.1 300 30.0 42 NIL

13 3.3 315 32.0 34 NIL

14 2.9 315 34.0 32 NIL

15 2.8 240 36.0 30 NIL

16 3.2 240 36.0 30 NIL

17 1.9 300 34.0 36 NIL

18 1.5 300 31.0 44 NIL

19 1.4 300 30.0 59 NIL

20 1.8 315 30.0 59 NIL

21 1.2 315 29.0 59 NIL

22 1.1 315 28.0 64 NIL

23 1.3 330 28.0 70 NIL

0 1.2 330 26.0 70 NIL

1 1.1 330 25.0 69 NIL

2 C - 25.0 76 NIL

3 C - 25.0 76 NIL

4 1.4 300 25.0 76 NIL

5 1.3 300 25.0 76 NIL

6 1.1 300 25.5 76 NIL

7 1.5 240 26.5 63 NIL

8 1.8 240 26.5 56 NIL

9 2.2 240 27.0 56 NIL

DATE : 25.03.2017 TO 26.03.2017


Wind Speed m/sec


Temperature (0C)


Rain fall (mm)

10 2.2 300 29.0 46 NIL 11 2.4 315 30.5 44 NIL

12 2.6 315 32.0 39 NIL

13 2.8 300 34.0 27 NIL

14 2.7 330 36.0 30 NIL 15 2.5 300 36.0 30 NIL

16 2.3 240 36.0 30 NIL 17 1.8 240 34.0 32 NIL



18 1.7 240 33.0 32 NIL

19

1.5

240 32.0 46 NIL

20 1.4 225 31.0 39 NIL

21 1.2 225 31.0 39 NIL

22 1.4 225 31.0 39 NIL 23 1.1 240 30.0 36 NIL

0 1.2 240 29.0 29 NIL 1 1.1 300 28.0 33 NIL 2 C - 26.0 42 NIL

3 C - 26.0 36 NIL 4 C - 26.0 36 NIL

5 1.3 300 26.0 36 NIL

6 1.5 300 26.5 32 NIL

7 1.7 300 26.5 32 NIL 8 1.8 300 27.0 56 NIL

9 1.9 300 27.5 51 NIL

DATE : 26.03.2017 TO 27.03.2017


Wind Speed m/sec


Temperature (0C)


Rain fall (mm)

10 2.1 300 29.0 46 NIL 11 2.3 300 30.0 47 NIL

12 2.5 315 32.0 39 NIL

13 2.9 315 34.0 32 NIL 14 2.6 300 36.0 30 NIL

15 2.4 300 36.0 30 NIL 16 2.2 315 36.0 30 NIL

17 1.6 300 35.0 30 NIL

18 1.8 240 33.0 36 NIL

19

1.4

240 32.0 41 NIL

20 1.3 240 31.0 41 NIL

21 1.2 225 31.0 41 NIL

22 1.1 225 31.0 41 NIL 23 1.1 225 30.0 36 NIL

0 1.2 240 29.0 29 NIL 1 1.1 300 28.0 33 NIL 2 C - 26.0 42 NIL

3 C - 26.0 36 NIL 4 1.2 240 26.0 36 NIL

5 1.3 240 26.0 36 NIL

6 1.4 240 26.5 32 NIL

7 1.8 225 26.5 32 NIL 8 1.9 225 27.0 56 NIL

9 1.9 300 27.5 51 NIL DATE : 27.03.2017 TO 28.03.2017


Wind Speed m/sec


Temperature (0C)


Rain fall (mm)

10 C - 32.0 46 NIL 11 1.2 210 34.0 41 NIL

12 1.6 240 35.0 42 NIL 13 1.2 240 35.0 42 NIL



14 C - 36.0 43 NIL

15 C - 37.0 39 NIL 16 1.2 210 36.0 38 NIL

17 1.2 210 34.0 46 NIL 18

2.2

210 34.0 46 NIL 19 2.2 135 34.0 46 NIL

20 2.3 135 32.5 49 NIL 21 1.6 210 32.0 49 NIL 22 1.2 210 30.0 53 NIL

23 1.2 210 29.0 58 NIL 0 C - 29.0 58 NIL

1 C - 28.5 58 NIL

2 C - 28.0 60 NIL

3 1.2 240 28.0 60 NIL 4 1.2 240 28.0 51 NIL

5 2.6 240 27.0 56 NIL 6 2.6 210 27.0 56 NIL

7 1.6 210 26.0 55 NIL

8 1.2 210 28.5 52 NIL

9 1.2 210 30.5 43 NIL DATE : 28.03.2017 TO 29.03.2017

Recording

time (hr.)

Wind Speed

m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain fall

(mm)

10 C - 32.0 49 NIL

11 0.63 210 34.0 41 NIL 12 0.68 240 36.0 34 NIL 13 1.2 210 36.0 34 NIL

14 1.7 135 36.0 34 NIL 15 1.9 210 34.5 42 NIL 16 2.2 135 34.0 41 NIL

17 2.7 240 32.0 55 NIL 18

2.1

210 31.5 41 NIL 19 3.4 210 31.5 41 NIL

20 2.2 210 30.0 44 NIL 21 3.4 135 30.0 42 NIL 22 3.4 135 28.5 49 NIL 23 1.6 210 28.0 48 NIL 0 C - 28.5 43 NIL 1 C - 27.0 50 NIL 2 C - 27.0 44 NIL 3 1.6 210 27.0 41 NIL 4 1.6 210 25.5 44 NIL 5 1.6 135 25.0 47 NIL 6 2.2 135 24.0 53 NIL 7 2.8 210 23.0 55 NIL 8 2.8 210 25.5 45 NIL 9 1.6 210 26.0 49 NIL

DATE : 29.03.2017 TO 30.03.2017

Recording

time (hr.)

Wind Speed

m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain fall

(mm)

10 2.8 135 32.0 58 NIL 11 2.5 120 34.0 56.0 NIL



12 2.2 135 36.0 53.0 NIL 13 2.0 120 36.5 53 NIL 14 2.6 135 37.0 51 NIL 15 3 120 37.5 49 NIL 16 2.8 135 35.5 55 NIL 17 C - 34.0 62 NIL 18

C

- 33.0 73 NIL 19 2.5 135 32.0 79 NIL 20 2.6 120 31.0 76 NIL 21 2.5 210 30.5 82 NIL 22 2.1 135 30.0 78 NIL 23 C - 29.5 82 NIL 0 C - 29.0 81 NIL 1 C - 28.5 85 NIL 2 C - 28.0 81 NIL 3 2.3 210 27.0 84 NIL 4 1.6 210 27.0 81 NIL 5 2.3 135 26.5 81 NIL 6 2.6 120 26.0 80 NIL 7 2.3 210 27.0 70 NIL 8 2.3 210 28.5 71 NIL 9 1.6 210 30.5 88 NIL

DATE : 30.03.2017 TO 31.03.2017


Wind Speed m/sec


Temperature (0C)


Rain fall (mm)

10 5.3 210 27.5 85 NIL 11 6.0 210 28.0 77 NIL

12 6.2 210 29.0 71 NIL 13 5.9 240 32.5 62 NIL 14 5.2 240 36.5 54 NIL

15 3.8 240 38.0 45 NIL 16 3.9 120 39.0 41 NIL

17 C - 41.0 39 NIL

18

C

- 43.0 33 NIL 19 3.2 135 42.0 36 NIL

20 2.6 210 39.0 29 NIL

21 1.6 210 38.0 40 NIL

22 5.3 210 36.5 39 NIL 23 2.7 240 34.0 46 NIL

0 3.8 120 33.5 47 NIL 1 1.6 120 32.0 52 NIL 2 C - 30.5 60 NIL

3 3.3 210 30.5 60 NIL 4 5.8 210 28.0 70 NIL 5 6.3 210 29.0 58 NIL

6 3.2 210 26.0 76 NIL

7 3.6 210 28.5 71 NIL 8 2.6 210 30.0 65 NIL

9 2.8 210 30.5 63 NIL DATE : 31.03.2017 TO 01.04.2017


Wind Speed m/sec


Temperature (0C)


Rain fall (mm)



10 5.8 210 27.0 81 NIL

11 6.2 210 29.0 71 NIL

12 5.9 210 31.0 66 NIL

13 5.6 240 33.5 55 NIL

14 5.3 240 36.5 44 NIL

15 5.2 120 39.0 39 NIL

16 3.8 135 41.0 35 NIL

17 C - 43.0 28 NIL

18

C

- 43.0 28

NIL

19 C - 41.0 33 NIL

20 2.6 240 39.0 37 NIL

21 1.6 240 36.0 45 NIL

22 5.3 210 35.0 44 NIL

23 2.6 135 34.0 51 NIL

0 2.6 135 33.0 55 NIL

1 2.2 210 32.5 56 NIL

2 C - 30.0 77 NIL

3 1.6 210 28.0 77 NIL

4 5.6 240 26.0 84 NIL

5 5.5 240 26.0 84 NIL

6 3.8 240 25.5 84 NIL

7 3.2 210 26.5 77 NIL

8 2.2 210 28.5 71 NIL

9 1.6 210 30.0 65 NIL

DATE : 01.04.2017 TO 02.04.2017


Wind Speed m/sec


Temperature (0C)


Rain fall (mm)

10 5.2 210 33.0 67 NIL

11 5.2 240 34.0 78 NIL

12 5.5 135 36.0 58 NIL

13 4.6 210 39.0 50 NIL

14 4.8 120 39.5 47 NIL

15 5.2 120 39.5 47 NIL

16 6.8 120 39.0 46 NIL

17 6.7 135 38.0 50 NIL

18 7.4 210 36.0 58 NIL

19 6.8 240 34.0 62 NIL

20 6.6 210 32.5 67 NIL

21 4.1 240 31.0 73 NIL

22 C - 30.0 75 NIL

23 C - 29.5 79 NIL

0 C - 29.0 85 NIL

1 C - 29.0 81 NIL

2 2.1 135 28.5 81 NIL

3 2.7 120 28.5 81 NIL

4 2.3 210 25.5 81 NIL

5 4.8 210 25.6 77 NIL

6 3.9 225 25.0 71 NIL

7 2.3 240 26.0 69 NIL

8 2.3 210 27.5 73 NIL

9 1.6 210 27.0 67 NIL

DATE : 02.04.2017 TO 03.04.2017



Recording

time (hr.)

Wind Speed

m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain fall

(mm)

10 4.6 210 32.5 71 NIL

11 2.3 210 33.0 67 NIL

12 3.3 135 36.0 58 NIL

13 1.2 135 36.0 56 NIL

14 1.2 240 38.5 65 NIL

15 3.2 120 38.0 54 NIL

16 4.6 210 39.5 49 NIL

17 3.7 210 38.0 50 NIL

18 3.8 120 36.0 58 NIL

19 1.7 135 34.0 62 NIL

20 1.7 135 32.7 71 NIL

21 1.6 240 31.0 72 NIL

22 2.6 210 30.5 75 NIL

23 C - 30.0 78 NIL

0 C - 29.0 78 NIL

1 C - 29.0 78 NIL

2 C - 29.0 74 NIL

3 3.2 210 28.0 78 NIL

4 4.6 210 28.5 78 NIL

5 5.6 240 28.0 77 NIL

6 4.2 240 28.0 77 NIL

7 3.6 210 29.0 71 NIL

8 2.3 210 30.0 68 NIL

9 2.2 210 30.5 75 NIL

DATE : 03.04.2017 TO 04.04.2017

Recording

time (hr.)

Wind Speed

m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain fall

(mm)

10 4.2 210 32.5 62 NIL

11 5.4 210 33.0 62 NIL

12 5.2 120 34.0 51 NIL

13 6.2 120 36.0 48 NIL

14 7.6 210 38.0 45 NIL

15 9.2 240 36.0 45 NIL

16 8.3 210 34.0 48 NIL

17 4.9 210 33.5 50 NIL

18 5 210 33.0 50 NIL

19 4.5 240 32.5 53 NIL

20 3.6 120 32.0 55 NIL

21 3.7 135 30.5 63 NIL

22 3.6 120 30.0 62 NIL

23 3.2 240 30.0 62 NIL

0 3.6 240 30.0 59 NIL

1 C - 29.0 64 NIL

2 C - 28.0 70 NIL

3 4.8 210 28.0 70 NIL

4 4.2 210 27.0 73 NIL

5 5 210 27.0 73 NIL

6 4.3 240 26.0 76 NIL

7 3.2 120 26.5 73 NIL

8 3.6 120 27.0 81 NIL

9 3 210 28.0 81 NIL



DATE : 04.04.2017 TO 05.04.2017


Wind Speed m/sec


Temperature (0C)


Rain fall (mm)

10 1.2 210 32.5 61 NIL

11 2.2 135 34.0 54 NIL

12 2.8 120 34.5 49 NIL

13 2.6 240 36.5 49 NIL

14 1.6 240 37.5 50 NIL

15 C - 37.0 55 NIL

16 C - 38.0 52 NIL

17 2.3 210 36.0 53 NIL

18 4.8 210 34.0 62 NIL

19 4.8 210 33.0 64 NIL

20 3.2 135 33.0 55 NIL

21

3.2

135 32.5 59

NIL

22 2.2 210 32.0 61 NIL

23 2.2 240 30.0 68 NIL

0 1.2 240 29.0 71 NIL

1 C - 28.5 77 NIL

2 C - 28.6 77 NIL

3 C - 28.0 67 NIL

4 C - 26.5 81 NIL

5 3.2 210 26.0 76 NIL

6 3.3 210 25.0 76 NIL

7 3.6 210 26.5 70 NIL

8 2.6 210 28.5 61 NIL

9 2.2 210 30.5 60 NIL

DATE : 05.04.2017 TO 06.04.2017

Recording time (hr.) Wind Speed m/sec


Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 2.3 150 30.5 75 NIL

11 3.2 150 30.0 76 NIL

12 3.2 210 30.0 75 NIL

13 2.9 210 32.0 61 NIL

14 3.6 120 33.0 62 NIL

15 4.6 120 33.0 62 NIL

16 4.2 120 34.5 57 NIL

17 3.7 210 34.5 57 NIL

18 2.8 210 33.5 56 NIL

19 2.8 210 33.0 55 NIL

20 2.2 210 32.5 53 NIL

21 2.6 240 32.0 53 NIL

22 2.6 240 32.0 53 NIL

23 C - 32.0 53 NIL

0 C - 31.5 61 NIL

1 C - 31.0 54 NIL

2 C - 30.5 60 NIL

3 2.2 210 30.0 59 NIL

4 3.6 210 30.0 59 NIL

5 2.6 120 29.5 59 NIL

6 3.8 120 29.0 58 NIL



7 3.6 210 28.5 71 NIL

8 3.5 210 29.0 71 NIL

9 4.2 210 29.5 68 NIL

DATE : 06.04.2017 TO 07.04.2017

Recording time (hr.) Wind Speed

m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.3 180 34.0 56 NIL

11 1.38 210 34.0 54 NIL 12 1.46 210 36.0 48 NIL

13 1.52 240 38.0 47 NIL 14 1.74 240 40.0 38 NIL

15 1.88 210 40.0 38 NIL

16 C - 40.0 38 NIL

17 C - 39.0 48 NIL 18 C - 38.0 48 NIL

19 1.92 180 37.0 48 NIL 20 2.12 180 36.0 51 NIL

21 2.2 270 35.0 56 NIL

22 2.5 270 34.0 56 NIL

23 1.92 240 34.0 56 NIL 0 1.38 210 32.0 56 NIL

1

1.42

210 32.0 56 NIL 2 1.33 210 30.0 65 NIL

3 1.54 240 30.0 65 NIL

4 C - 30.0 65 NIL

5 C - 30.0 65 NIL 6 C - 31.0 65 NIL

7 1.82 180 32.0 55 NIL 8 1.68 180 32.0 55 NIL

9 1.52 180 33.0 55 NIL

DATE : 07.04.2017 TO 08.04.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.38 180 34.0 56 NIL

11 1.32 180 35.0 55 NIL

12 1.46 210 36.0 61 NIL 13 1.82 210 38.0 42 NIL

14 1.74 210 38.0 42 NIL 15 1.62 180 40.0 38 NIL

16 1.33 180 40.0 38 NIL

17 C - 38.0 42 NIL

18 C - 38.0 42 NIL 19 C - 37.0 42 NIL

20 2.12 240 36.0 38 NIL 21 1.94 180 38.0 38 NIL

22 2.08 240 36.0 38 NIL

23 1.25 240 34.0 38 NIL



0 1.38 240 34.0 40 NIL

1

2.12

225 34.0 40 NIL

2 2.08 225 32.0 55 NIL

3 1.94 180 32.0 55 NIL

4 1.82 135 30.0 59 NIL 5 C - 30.0 59 NIL

6 C - 30.0 59 NIL 7 1.08 135 30.0 59 NIL 8 1.14 135 31.0 59 NIL

9 1.33 180 32.0 65 NIL

DATE : 08.04.2017 TO 09.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.29 210 34.0 50 NIL

11 1.47 240 35.0 53 NIL

12 1.59 240 36.0 53 NIL

13 1.78 135 38.0 36 NIL 14 1.93 135 40.0 38 NIL

15 2.01 120 40.0 38 NIL 16 2.33 135 40.0 38 NIL 17 1.63 240 39.0 38 NIL

18 1.47 240 38.0 40 NIL 19 1.39 210 38.0 40 NIL

20 2.11 135 37.0 40 NIL

21 2.01 180 36.0 43 NIL

22 C - 35.0 43 NIL 23 C - 34.0 46 NIL

0 1.48 210 37.0 46 NIL 1

0.87

225 32.0 56 NIL 2 0.91 225 32.0 56 NIL

3 1.87 240 31.0 56 NIL 4 2.01 240 30.0 59 NIL

5 2.35 180 30.0 59 NIL

6 2.33 180 30.0 59 NIL 7 1.05 210 31.0 56 NIL 8 1.33 180 31.0 56 NIL

9 1.47 180 32.0 56 NIL

DATE : 09.04.2017 TO 10.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.88 240 32.0 49 NIL 11 1.23 210 34.0 43 NIL

12 1.31 135 36.0 33 NIL

13 1.63 210 38.0 30 NIL 14 1.29 135 38.0 30 NIL 15 1.17 210 38.0 30 NIL



16 0.95 240 37.0 34 NIL

17 0.98 210 36.0 38 NIL 18 1.2 240 34.0 43 NIL

19 1.6 210 32.0 49 NIL 20 1.3 240 30.0 50 NIL

21 C - 29.0 52 NIL

22 C - 28.5 57 NIL

23 C - 27.5 63 NIL 0 C - 26.5 66 NIL

1

C

- 25.5 72 NIL 2 0.69 240 24.5 79 NIL

3 0.66 210 24.0 83 NIL

4 2.2 240 24.0 83 NIL

5 C - 25.0 76 NIL 6 C - 26.0 73 NIL

7 C - 27.0 66 NIL 8 0.73 210 29.0 58 NIL

9 0.89 240 30.0 54 NIL

DATE : 10.04.2017 TO 11.04.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.6 240 32.0 55 NIL 11 1.3 210 34.0 54 NIL 12 1.5 210 34.5 54 NIL 13 C - 36.0 50 NIL 14 C - 38.0 45 NIL 15 C - 38.0 45 NIL 16 2.6 210 38.0 45 NIL 17 4.6 240 37.0 46 NIL 18 3.3 210 36.0 48 NIL 19 3.6 240 34.0 54 NIL 20 2.2 240 34.0 56 NIL 21 2.5 120 32.0 61 NIL 22 2.6 210 32.0 61 NIL 23 3.6 210 30.0 72 NIL 0 C - 29.0 74 NIL 1

C

- 28.5 74 NIL 2 C - 28.5 74 NIL 3 1.2 210 27.0 81 NIL 4 2.5 210 27.5 81 NIL 5 2.5 210 26.0 73 NIL 6 3.6 240 25.0 80 NIL 7 3.6 240 26.5 70 NIL 8 2.2 210 27.0 77 NIL 9 1.6 210 30.5 66 NIL

DATE : 11.04.2017 TO 12.04.2017




m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.6 135 32.0 20 NIL 11 3.6 135 33.0 22 NIL

12 3.8 210 36.0 18 NIL

13 2.8 135 38.0 36 NIL 14 1.2 240 39.0 37 NIL 15 3.6 240 38.0 37 NIL

16 4.6 240 36.0 34 NIL

17 4.7 210 34.0 23 NIL 18 5.3 210 32.0 24 NIL

19 3.2 210 31.0 27 NIL 20 3.0 135 30.0 31 NIL

21 3.3 135 28.0 39 NIL

22 3.1 210 27.0 28 NIL

23 2.9 210 26.0 42 NIL 0 2.2 210 25.0 47 NIL

1

C

- 24.0 47 NIL

2 C - 24.0 49 NIL 3 C - 23.0 52 NIL

4 2.3 210 22.0 58 NIL 5 3.6 210 21.0 49 NIL 6 4.2 210 23.5 48 NIL

7 3.0 240 25.0 41 NIL 8 2.2 135 28.0 33 NIL

9 2.1 210 30.0 26 NIL

DATE : 12.04.2017 TO 13.04.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 3.3 135 33.0 45 NIL

11 4.0 120 35.0 42 NIL

12 5.1 210 37.0 37 NIL

13 5.5 240 39.0 33 NIL

14 6.2 240 40.0 30 NIL

15 6.5 240 40.0 30 NIL

16 6.1 240 38.0 32 NIL

17 5.3 135 36.5 34 NIL

18 4.9 240 34.5 41 NIL

19 4.0 210 32.5 47 NIL

20 3.8 135 31.5 52 NIL

21 3.5 120 31.0 54 NIL

22 2.8 210 30.0 53 NIL

23 C - 29.5 56 NIL

0

C

- 29.0 55

NIL

1 C - 28.5 58 NIL

2 2.2 135 28.5 58 NIL

3 2.3 210 28.0 57 NIL

4 2.5 120 27.5 57 NIL



5 2.8 210 27.5 57 NIL

6 2.5 240 27.0 50 NIL

7 2.6 135 28.0 51 NIL

8 2.9 120 29.5 50 NIL

9 3.1 240 31.0 48 NIL

DATE : 13.04.2017 TO 14.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 4.5 135 31.0 60 NIL

11 5.6 120 33.0 56 NIL

12 6.0 90 35.0 52 NIL

13 5.8 240 36.0 53 NIL

14 5.0 60 35.0 50 NIL

15 4.8 60 34.0 54 NIL

16 4.5 120 33.5 59 NIL

17 3.9 90 33.0 58 NIL

18 2.8 60 32.5 61 NIL

19 2.5 120 31.0 66 NIL

20 2.9 210 30.0 65 NIL

21 2 240 29.5 65 NIL

22 C - 29.0 65 NIL

23 C - 28.5 68 NIL

0

C

- 28.0 70

NIL

1 C - 27.5 74 NIL

2 2.2 240 27.0 81 NIL

3 2.5 120 26.5 84 NIL

4 3.5 135 26.5 88 NIL

5 4.5 120 26.0 73 NIL

6 4.0 210 26.5 70 NIL

7 3.1 210 28.0 63 NIL

8 3.5 135 29.0 68 NIL

9 3.9 210 30.0 59 NIL

DATE : 14.04.2017 TO 15.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 4.2 210 32.0 61 NIL

11 5.7 210 33.0 56 NIL

12 6.1 120 34.0 58 NIL

13 5.3 135 36.0 53 NIL

14 4.3 240 38.0 54 NIL

15 4.5 135 39.0 54 NIL

16 4.9 240 38.0 50 NIL

17 3.6 210 37.0 53 NIL

18 2.6 60 36.0 53 NIL

19 2.5 60 34.5 62 NIL

20 2.9 210 34.0 62 NIL



21 2 240 33.0 65 NIL

22 C - 32.5 67 NIL

23 C - 32.0 64 NIL

0

C

- 30.0 82

NIL

1 C - 28.0 88 NIL

2 C - 27.0 84 NIL

3 2.2 240 27.0 77 NIL

4 4.5 135 26.0 81 NIL

5 4.0 240 26.0 76 NIL

6 3.5 210 27.0 70 NIL

7 3.1 210 28.5 68 NIL

8 3.5 210 29.5 68 NIL

9 2.9 210 30.5 63 NIL

DATE : 15.04.2017 TO 16.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 3.2 120 32.0 44 NIL

11 4.2 135 33.0 41 NIL

12 3.6 135 34.0 46 NIL

13 4.0 210 36.0 48 NIL

14 2.6 135 38.0 54 NIL

15 2.1 240 38.0 54 NIL

16 2.5 210 36.0 58 NIL

17 3.6 210 35.0 63 NIL

18 4.7 210 34.0 62 NIL

19 5.3 120 33.0 66 NIL

20 4.2 120 32.0 61 NIL

21 3.6 150 30.0 65 NIL

22 3.2 210 39.0 71 NIL

23 2.2 210 28.0 70 NIL

0

C

- 28.0 70

NIL

1 C - 27.0 70 NIL

2 C - 26.0 76 NIL

3 C - 26.0 76 NIL

4 3.2 240 25.0 76 NIL

5 4.5 240 24.0 75 NIL

6 3.2 210 25.0 61 NIL

7 2.9 210 26.0 55 NIL

8 2.5 210 27.0 64 NIL

9 2.3 210 28.0 88 NIL

DATE : 16.04.2017 TO 17.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 5.8 150 31.0 52 NIL 11 5.6 240 32.0 55 NIL 12 4.6 210 34.0 51 NIL



13 3.2 210 35.0 52 NIL

14 3.5 210 34.0 56 NIL 15 3 240 32.0 61 NIL

16 4.5 135 31.0 66 NIL 17 4.2 225 29.0 71 NIL

18 5.6 240 28.0 77 NIL

19 5.3 210 27.0 77 NIL

20 4.6 225 26.0 76 NIL 21 3.6 225 26.0 76 NIL

22 3.2 135 25.0 76 NIL 23 2.5 210 25.0 76 NIL 0

2.2

135 25.0 76 NIL

1 C - 24.0 75 NIL

2 C - 23.0 83 NIL 3 C - 23.0 83 NIL

4 2.2 225 23.0 83 NIL 5 3.6 225 23.0 75 NIL

6 3.2 135 24.0 83 NIL

7 2.5 210 26.0 76 NIL

8 2.2 210 28.0 64 NIL 9 2.3 135 30.0 53 NIL

DATE : 17.04.2017 TO 18.04.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 3.2 210 32.0 61 NIL

11 3.5 210 33.0 62 NIL 12 4.6 240 35.0 69 NIL

13 4.3 135 36.0 58 NIL 14 3.3 135 37.0 54 NIL

15 2.9 210 36.0 63 NIL

16 5.6 210 35.0 69 NIL

17 4.3 240 33.0 68 NIL 18 4.3 240 31.0 79 NIL

19 5.3 135 30.0 59 NIL 20 5.4 135 28.0 85 NIL

21 3.3 225 27.0 92 NIL

22 3.1 225 26.0 84 NIL 23 2.9 210 26.0 84 NIL 0

2.2

210 26.0 84 NIL

1 C - 25.0 92 NIL 2 C - 25.0 84 NIL

3 C - 24.0 91 NIL

4 2.3 210 24.0 91 NIL

5 3.6 225 24.0 91 NIL 6 4.5 225 25.0 92 NIL

7 3.2 210 26.0 84 NIL 8 2.3 210 28.0 77 NIL

9 2.7 240 30.0 72 NIL



DATE : 18.04.2017 TO 19.04.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 3.2 135 32.0 61 NIL 11 2.2 240 34.0 56 NIL 12 3.2 135 36.0 53 NIL

13 2.1 240 37.0 49 NIL 14 1.9 210 38.0 50 NIL

15 2.6 210 39.0 51 NIL

16 4.9 210 40.0 51 NIL

17 5.3 210 37.0 59 NIL 18 5.2 210 36.0 58 NIL

19 5.3 240 35.0 63 NIL 20 4.2 135 34.0 62 NIL

21 4.6 210 34.0 62 NIL

22 3.2 210 33.0 62 NIL

23 C - 33.0 56 NIL 0

C

- 32.0 61 NIL

1 C - 30.0 72 NIL 2 C - 29.0 71 NIL 3 2.2 210 28.0 77 NIL

4 2.1 240 27.0 84 NIL 5 2.5 210 26.0 84 NIL 6 2.6 210 26.5 81 NIL

7 3.2 135 27.0 84 NIL 8 3.5 210 30.0 62 NIL

9 3.2 210 32.0 61 NIL

DATE : 19.04.2017 TO 20.04.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 3.2 135 32.0 46 NIL

11 3.6 210 33.0 45 NIL 12 4.2 240 34.0 43 NIL 13 3.2 135 36.0 38 NIL

14 2.5 120 38.0 36 NIL 15 2.6 240 38.0 36 NIL

16 2.2 210 38.0 36 NIL

17 2.2 210 36.0 43 NIL

18 3.2 240 35.0 42 NIL 19 3.6 240 34.0 46 NIL

20 3.2 210 33.0 50 NIL 21 2.2 210 32.5 49 NIL

22 2.5 135 30.0 56 NIL

23 C - 29.0 68 NIL

0

C

- 28.0 70 NIL 1 C - 28.0 70 NIL

2 C - 28.0 64 NIL



3 2.2 210 27.0 70 NIL

4 2.3 210 27.0 63 NIL 5 2.5 210 26.0 66 NIL

6 3.6 240 25.5 69 NIL 7 3.8 240 25.5 69 NIL

8 3.5 135 26.0 68 NIL

9 2.6 210 26.5 66 NIL

DATE : 20.04.2017 TO 21.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 5.3 210 30.0 59 NIL

11 6.3 240 31.0 54 NIL

12 6.1 120 32.0 55 NIL

13 5.2 120 33.0 56 NIL 14 5.8 135 34.0 51 NIL

15 4.6 135 35.0 52 NIL 16 4.4 240 34.0 51 NIL

17 5.8 240 32.0 61 NIL

18 5.8 210 31.0 66 NIL

19 5.2 210 30.0 65 NIL 20 6.2 210 30.0 65 NIL

21 4.5 135 29.0 71 NIL 22 4.3 120 28.0 77 NIL 23

3.2

240 28.0 70 NIL

0 3.1 210 28.0 70 NIL

1 C - 27.0 77 NIL 2 C - 27.0 70 NIL

3 4.5 210 27.0 70 NIL 4 4.2 240 27.0 70 NIL

5 6.5 210 26.0 76 NIL

6 6 240 25.0 88 NIL

7 4.2 210 26.0 80 NIL 8 3.8 135 27.0 77 NIL

9 3.6 210 28.0 70 NIL

DATE : 21.04.2017 TO 22.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 2.5 120 30.0 59 NIL 11 2.5 120 32.0 49 NIL

12 2.3 210 33.0 50 NIL

13 2.2 210 34.0 46 NIL

14 2.3 225 36.0 43 NIL 15 3.6 240 36.0 43 NIL

16 3.2 240 37.0 44 NIL 17 4.2 135 36.0 48 NIL

18 4.0 210 35.0 47 NIL

19 4.1 210 35.0 47 NIL



20 3.6 135 34.0 51 NIL

21 3.5 120 33.0 53 NIL 22 2.5 210 32.0 58 NIL

23

2.4

210 31.0 60 NIL

0 C - 30.0 65 NIL 1 C - 29.0 61 NIL

2 C - 29.0 61 NIL 3 C - 29.0 64 NIL 4 3.6 240 28.0 67 NIL

5 3.2 120 27.0 70 NIL 6 3 135 26.0 76 NIL

7 2.5 240 27.0 81 NIL

8 2.3 210 27.5 81 NIL

9 2.2 210 28.5 68 NIL

DATE : 22.04.2017 TO 23.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 6.3 120 29.0 58 NIL

11 7.0 135 30.0 53 NIL 12 8.4 120 30.5 57 NIL 13 8.0 210 30.5 57 NIL

14 5.8 240 32.0 55 NIL 15 6.5 120 34.0 46 NIL

16 7.0 135 35.0 43 NIL

17 7.2 210 34.0 48 NIL

18 6.4 210 32.0 55 NIL 19 5.3 240 31.0 52 NIL

20 4.3 210 30.0 59 NIL 21 4.2 120 30.0 59 NIL

22 3.6 240 29.0 58 NIL

23

3.2

330 28.0 64 NIL 0 3.2 315 28.0 57 NIL

1 C - 28.0 57 NIL

2 C - 27.0 63 NIL 3 C - 25.0 61 NIL 4 4.5 210 25.0 46 NIL

5 6.5 120 25.0 46 NIL

6 4.6 60 25.5 52 NIL 7 3.3 45 26.0 55 NIL

8 3 210 27.0 50 NIL 9 2.5 210 28.0 54 NIL

DATE : 23.04.2017 TO 24.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 2.5 210 28.5 61 NIL 11 3.5 240 29.0 71 NIL



12 2.2 210 29.0 71 NIL

13 3.2 210 30.0 65 NIL 14 2.2 135 32.0 86 NIL

15 8.1 120 34.0 91 NIL 16 8.5 240 35.0 96 6.5

17 8.5 240 34.0 98 8

18 9.3 330 33.0 98 12.5

19 4.5 120 33.0 83 NIL 20 2.5 120 32.0 68 NIL

21 C - 32.0 49 NIL 22 C - 30.0 53 NIL 23

C

- 29.0 58 NIL

0 C - 28.0 64 NIL

1 C - 28.0 57 NIL 2 C - 27.0 53 NIL

3 C - 26.0 55 NIL 4 2.2 210 25.0 61 NIL

5 2.5 210 25.0 54 NIL

6 2.0 120 26.5 42 NIL

7 2.3 135 26.0 42 NIL 8 3.0 210 27.0 44 NIL

9 2.2 210 28.0 45 NIL

DATE : 24.04.2017 TO 25.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 2.9 210 28.5 74 NIL 11 2.5 210 29.0 71 NIL

12 2.1 210 30.0 65 NIL 13 2 210 32.0 61 NIL

14 2.2 210 34.0 56 NIL

15 2.5 210 35.0 57 NIL

16 3.5 210 34.0 62 NIL 17 3 210 34.0 56 NIL

18 3.2 240 33.5 59 NIL 19 2.9 120 32.0 67 NIL

20 2.3 210 31.0 66 NIL

21 2.1 210 31.0 66 NIL 22 2.3 210 30.0 65 NIL 23 C - 30.0 65 NIL

0 C - 30.0 65 NIL

1 C - 29.0 64 NIL 2 C - 29.0 64 NIL

3 C - 29.0 64 NIL 4 3.2 210 29.0 64 NIL

5 3.5 210 29.0 58 NIL

6 2.3 240 28.0 64 NIL

7 2 240 28.5 70 NIL 8 2.1 210 29.0 68 NIL

9 1.8 210 29.0 85 NIL



DATE : 25.04.2017 TO 26.04.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.9 210 30.5 81 NIL 11 2 240 32.0 73 NIL 12 1.5 240 34.5 66 NIL

13 1.2 210 36.0 61 NIL 14 1.5 210 28.0 52 NIL

15 1.5 210 39.0 51 NIL

16 2.2 210 38.0 50 NIL

17 2.3 210 37.0 54 NIL 18 2.5 210 36.0 58 NIL

19 2.5 210 36.0 58 NIL 20 3.5 135 35.0 57 NIL

21 2.8 210 34.0 57 NIL

22 2.2 150 34.0 56 NIL

23 1.9 240 34.0 56 NIL 0 C - 34.0 56 NIL

1 C - 34.0 51 NIL 2 C - 33.0 56 NIL

3

C

- 32.0 61 NIL

4 1.5 210 30.0 65 NIL 5 2.2 240 29.0 74 NIL 6 2.5 210 29.0 74 NIL

7 2.8 240 29.0 81 NIL 8 1.9 210 29.5 81 NIL

9 2.1 210 30.5 76 NIL

DATE : 26.04.2017 TO 27.04.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.3 210 32.5 56 NIL

11 1.3 120 34.0 48 NIL 12 2.2 135 36.0 43 NIL 13 C - 38.0 40 NIL

14 C - 40.0 47 NIL 15 C - 40.0 47 NIL

16 2.1 210 40.0 51 NIL

17 1.9 210 39.0 51 NIL

18 2.3 210 38.0 54 NIL 19 2.0 240 37.0 54 NIL

20 2.5 210 36.0 58 NIL 21 2.5 135 36.0 58 NIL

22 2.0 135 34.0 68 NIL

23 1.9 240 34.0 62 NIL

0 C - 34.0 62 NIL 1 C - 32.0 61 NIL

2 C - 31.0 72 NIL 3 - 30.0 72 NIL



C

4 1.6 240 28.0 85 NIL

5 1.9 240 29.0 71 NIL

6 2.3 210 29.5 71 NIL 7 2.5 210 29.5 71 NIL

8 2.6 210 30.0 72 NIL 9 2.2 225 31.5 64 NIL

DATE : 27.04.2017 TO 28.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.3 120 32.5 59 NIL

11 1.2 135 34.0 56 NIL 12 1.2 210 36.0 53 NIL

13 C - 38.0 50 NIL

14 C - 39.5 49 NIL

15 C - 40.0 56 NIL 16 C - 39.0 55 NIL

17 1.5 210 38.0 54 NIL 18 1.5 210 38.0 54 NIL

19 1.2 210 36.0 63 NIL

20 2.2 240 35.0 63 NIL 21 2.3 210 35.0 63 NIL 22 2.1 210 34.0 62 NIL

23 C - 34.0 62 NIL

0 C - 33.0 68 NIL 1 C - 32.0 67 NIL

2

C

- 30.0 78 NIL

3 C - 30.0 72 NIL 4 1.5 240 30.0 72 NIL

5 2.2 240 29.0 78 NIL 6 3.6 210 29.0 71 NIL

7 3.0 210 29.5 71 NIL

8 3.0 210 30.5 76 NIL

9 2.7 210 32.0 64 NIL

DATE : 28.04.2017 TO 29.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.2 120 33.5 59 NIL

11 2.2 135 34.0 59 NIL

12 1.6 135 36.0 53 NIL

13 1.3 210 38.0 50 NIL

14 C - 40.0 47 NIL

15 C - 41.0 52 NIL

16 C - 41.0 52 NIL

17 1.5 240 40.0 47 NIL

18 1.5 210 39.0 51 NIL

19 2.2 210 38.0 50 NIL



20 2.5 225 36.0 53 NIL

21 1.2 210 36.0 53 NIL

22 1.2 225 35.0 57 NIL

23 C - 35.0 52 NIL

0 C - 34.0 56 NIL

1 C - 34.0 56 NIL

2

C

- 32.0 61

NIL

3 C - 32.0 61 NIL

4 1.5 210 30.0 72 NIL

5 2.0 240 30.0 65 NIL

6 1.3 210 39.5 72 NIL

7 1.2 210 30.5 66 NIL

8 1.2 210 31.0 66 NIL

9 1.3 240 32.0 62 NIL

DATE : 29.04.2017 TO 30.04.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.5 210 33.0 59 NIL

11 1.5 210 34.0 56 NIL

12 1.6 210 36.0 48 NIL

13 C - 38.0 47 NIL

14 C - 39.0 50 NIL

15 C - 40.0 51 NIL

16 4.5 240 39.0 50 NIL

17 5.6 210 36.0 50 NIL

18 5.7 210 36.0 58 NIL

19 4.5 210 34.0 68 NIL

20 4.2 240 34.0 62 NIL

21 3.2 240 32.0 67 NIL

22 3.0 240 32.0 70 NIL

23 2.0 135 32.0 70 NIL

0 2.1 135 30.0 82 NIL

1 C - 29.0 81 NIL

2

C

- 29.0 81

NIL

3 C - 29.0 81 NIL

4 2.5 135 27.0 92 NIL

5 3.5 135 27.0 84 NIL

6 3.7 135 26.5 88 NIL

7 4.2 135 27.5 81 NIL

8 2.2 210 28.0 85 NIL

9 2.3 240 29.0 78 NIL

DATE : 30.04.2017 TO 01.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 2.5 135 30.0 72 NIL

11 2.7 225 32.0 67 NIL



12 2.2 225 34.0 62 NIL

13 1.5 135 36.0 58 NIL

14 C - 37.0 59 NIL

15 C - 38.0 76 NIL

16 2.8 135 38.0 82 25

17 1.2 240 36.0 91 20

18 5.6 300 34.0 92 23

19 4.5 300 30.0 96 20

20 4.5 300 28.0 98 15

21 3.9 135 27.0 86 NIL

22 3.6 90 27.0 70 NIL

23 3.9 90 26.0 76 NIL

0 C - 26.0 76 NIL

1 C - 26.0 69 NIL

2

C

- 25.0 76

NIL

3 C - 24.0 68 NIL

4 2.2 210 24.0 68 NIL

5 3.5 180 23.0 67 NIL

6 3.9 180 23.0 67 NIL

7 2.5 135 24.0 64 NIL

8 3.2 135 24.0 64 NIL

9 2.5 135 25.0 61 NIL

DATE : 01.05.2017 TO 02.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 2.2 210 27.0 70 NIL

11 1.5 210 28.0 64 NIL

12 1.4 120 30.0 65 NIL

13 1.2 135 32.0 55 NIL

14 C - 36.0 43 NIL

15 C - 37.0 44 NIL

16 4.5 180 36.0 48 NIL

17 5.8 45 35.0 49 NIL

18 8.8 45 34.0 86 15

19 9.9 270 32.0 92 12

20 7.5 45 32.0 86 NIL

21 5.2 180 32.0 71 NIL

22

4.2

180 31.0 54

NIL

23 3.2 180 31.0 48 NIL

0 2.5 180 30.5 51 NIL

1 2.2 210 30.5 44 NIL

2 C - 29.0 46 NIL

3 C - 29.0 40 NIL

4 C - 28.0 45 NIL

5 1.5 225 27.0 44 NIL

6 2.5 180 27.0 44 NIL

7 2 180 27.5 45 NIL

8 1.6 225 27.5 42 NIL

9 210 27.0 50 NIL



1.5

DATE : 02.05.2017 TO 03.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 2.5 120 28.0 57 NIL

11 3.5 135 29.0 58 NIL

12 2.2 210 30.0 53 NIL

13 C - 32.0 55 NIL

14 C - 34.5 44 NIL

15 C - 36.0 43 NIL

16 2.5 210 37.0 39 NIL

17 2.8 210 35.0 42 NIL

18 3.0 180 34.0 46 NIL

19 3.5 180 33.0 45 NIL

20 3.8 225 33.0 45 NIL

21 2.8 225 32.5 47 NIL

22

2.6

315 30.0 53

NIL

23 2.2 315 30.0 47 NIL

0 2.0 210 30.0 47 NIL

1 C - 29.0 49 NIL

2 C - 28.0 54 NIL

3 C - 27.0 50 NIL

4 1.5 225 26.0 55 NIL

5 2.6 225 25.0 54 NIL

6 3.5 180 24.0 53 NIL

7 2.8 180 25.0 47 NIL

8 2.3 180 26.5 50 NIL

9 2.2 180 27.5 51 NIL

DATE : 03.05.2017 TO 04.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.5 210 28.0 70 NIL

11 2.2 210 29.0 71 NIL

12 1.3 210 30.0 62 NIL

13 C - 32.0 61 NIL

14 C - 34.0 56 NIL

15 C - 36.0 55 NIL

16 2.5 225 37.0 54 NIL

17 2.7 225 37.0 59 NIL

18 2.4 225 36.0 61 NIL

19 2.2 225 35.0 62 NIL

20 1.5 225 35.0 57 NIL

21 1.8 180 34.0 62 NIL

22

1.2

180

32.0 67

NIL

23 1.0 180 30.0 75 NIL

0 C - 29.0 85 NIL



1 C - 29.0 81 NIL

2 C - 28.0 88 NIL

3 C - 27.5 88 NIL

4 2.2 180 27.0 84 NIL

5 3.5 180 26.5 81 NIL

6 2.7 225 26.5 81 NIL

7 2.5 180 27.0 84 NIL

8 2.2 180 28.0 74 NIL

9 1.8 225 29.0 78 NIL

DATE : 04.05.2017 TO 05.05.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.5 225 29.0 59 NIL

11 1.2 210 30.0 56 NIL 12 1.2 210 32.0 61 NIL

13 C - 34.0 65 NIL 14 C - 36.0 63 NIL

15 C - 38.0 50 NIL

16 1.2 180 37.0 54 NIL

17 2.2 180 37.0 59 NIL 18 3.4 180 36.0 58 NIL

19 3.0 180 35.0 57 NIL 20 1.9 210 35.0 57 NIL 21 2.0 240 34.0 63 NIL

22

1.2

180 34.0 56 NIL

23 C - 34.0 56 NIL 0 C - 34.0 67 NIL

1 C - 32.0 66 NIL 2 C - 31.0 65 NIL

3 C - 30.0 71 NIL

4 2.2 210 29.0 64 NIL

5 2.5 210 29.0 64 NIL 6 2.3 180 28.0 64 NIL

7 3.0 180 28.5 68 NIL 8 1.7 180 28.5 74 NIL

9 1.5 180 29.0 72 NIL

DATE : 05.05.2017 TO 06.05.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.2 120 32.0 55 NIL

11 2.2 135 34.0 51 NIL

12 1.5 225 36.0 48 NIL 13 1.2 225 38.0 47 NIL

14 C - 40.0 38 NIL 15 C - 39.0 41 NIL

16 C - 39.0 41 NIL

17 1.5 135 38.0 40 NIL



18 2.5 135 37.0 42 NIL

19 2.8 120 36.0 48 NIL 20 2.2 225 34.0 51 NIL

21 1.8 210 33.0 56 NIL 22

1.6

240 33.0 56 NIL 23 1.5 180 32.0 58 NIL

0 1.3 180 32.0 58 NIL 1 C - 31.0 60 NIL 2 C - 31.0 63 NIL

3 C - 30.0 65 NIL 4 C - 30.0 59 NIL

5 1.6 225 28.0 70 NIL

6 1.9 225 28.5 70 NIL

7 2.5 180 29.0 71 NIL 8 1.7 225 29.5 81 NIL

9 1.5 180 30.5 78 NIL

DATE : 06.05.2017 TO 07.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 5.2 120 28.5 78 NIL 11 6.2 120 29.5 65 NIL

12 3.6 120 30.5 63 NIL 13 3.5 210 32.0 64 NIL

14 3.2 210 34.0 56 NIL

15 3.0 240 36.0 55 NIL

16 3.6 210 38.0 54 NIL 17 4.8 210 37.0 54 NIL

18 3.7 210 36.0 58 NIL 19 3.6 210 36.0 58 NIL

20 3.5 240 35.0 47 NIL

21

3.0

120 34.5 52 NIL 22 2.9 210 34.0 51 NIL

23 2.9 210 34.0 51 NIL

0 3.0 240 33.0 53 NIL 1 C - 32.5 55 NIL 2 C - 32.0 55 NIL

3 C - 30.5 63 NIL

4 2.6 120 30.0 59 NIL 5 3.5 120 29.0 64 NIL

6 3.5 240 28.0 70 NIL 7 2.5 60 28.5 78 NIL

8 2.7 210 29.0 71 NIL

9 2.2 210 30.5 72 NIL

DATE : 07.05.2017 TO 08.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm)



10 4.3 240 31.5 67 NIL

11 4.5 120 32.0 64 NIL 12 5.3 210 32.5 65 NIL

13 4.8 210 33.0 61 NIL 14 4.0 120 36.0 54 NIL

15 3.8 135 36.0 53 NIL

16 5.6 135 35.0 48 NIL

17 9.9 120 34.0 48 NIL 18 9.0 240 28.0 70 NIL

19 6.2 240 26.0 88 NIL 20 5.0 210 27.0 66 NIL 21

3.9

210 26.0 73 NIL

22 3.0 135 25.5 73 NIL

23 2.5 210 25.0 73 NIL 0 2.5 240 24.5 76 NIL

1 C - 24.0 79 NIL 2 C - 24.0 79 NIL

3 C - 23.5 83 NIL

4 2.2 240 23.0 79 NIL

5 2.2 210 22.5 83 NIL 6 2.5 210 22.0 82 NIL

7 2.0 210 24.0 83 NIL 8 2.3 210 26.5 76 NIL

9 1.6 210 30.0 65 NIL

DATE : 08.05.2017 TO 09.05.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 3.2 240 30.5 82 NIL 11 2.5 120 31.0 78 NIL

12 2.2 210 32.0 73 NIL

13 2.2 210 34.0 71 NIL

14 1.9 120 36.0 58 NIL 15 2.5 120 38.0 54 NIL

16 3.0 135 38.0 54 NIL 17 5.6 135 36.5 57 NIL

18 7.2 120 36.0 56 NIL

19 4.0 240 34.0 62 NIL 20 3.0 240 32.5 70 NIL 21

2.1

240 32.0 67 NIL

22 2.6 210 30.5 79 NIL 23 3.0 210 30.5 79 NIL

0 3.6 210 30.0 75 NIL

1 C - 30.0 75 NIL

2 C - 29.5 78 NIL 3 C - 29.5 78 NIL

4 3.2 210 28.0 77 NIL 5 4.2 240 26.5 84 NIL

6 3.0 240 26.0 84 NIL

7 2.2 210 27.5 81 NIL



8 2.6 210 28.0 78 NIL

9 2.2 210 30.0 78 NIL

DATE : 09.05.2017 TO 10.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.7 180 34.0 46 NIL

11 1.4 180 35.0 42 NIL

12 1.9 210 36.0 43 NIL 13 1.9 240 38.0 40 NIL

14 2.2 135 38.0 45 NIL 15 2.8 135 38.0 45 NIL

16 3.2 180 37.0 49 NIL

17 3.4 210 37.0 44 NIL

18 2.4 240 36.0 48 NIL 19 2.6 240 35.0 47 NIL

20 3.1 180 34.0 51 NIL 21

3.2

240 32.0 55 NIL 22 1.9 270 30.0 65 NIL

23 1.8 270 29.0 64 NIL 0 2.4 210 28.0 70 NIL 1 2.9 225 26.0 76 NIL

2 3.2 180 26.0 76 NIL 3 3.1 180 26.0 76 NIL

4 2.9 225 26.0 76 NIL

5 2.1 135 26.0 76 NIL

6 1.9 120 26.0 76 NIL 7 1.8 225 28.0 70 NIL

8 1.1 225 30.0 65 NIL 9 1.0 180 31.5 64 NIL

DATE : 10.05.2017 TO 11.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.6 135 34.0 46 NIL

11 1.9 225 36.0 43 NIL

12 2.2 180 38.0 40 NIL

13 2.3 240 38.0 45 NIL 14 2.4 300 40.0 38 NIL

15 1.8 300 40.0 38 NIL 16 1.9 270 40.0 38 NIL

17 2.3 270 39.0 41 NIL

18 2.4 135 38.0 40 NIL

19 2.6 135 37.0 44 NIL 20 2.1 135 36.0 48 NIL

21

1.6

180 36.0 48 NIL 22 1.4 240 35.0 47 NIL 23 1.1 240 34.0 51 NIL



0 1.3 180 32.0 55 NIL

1 1.3 180 32.0 55 NIL 2 1.8 270 30.0 59 NIL

3 1.6 300 30.0 59 NIL 4 1.9 225 28.0 70 NIL

5 1.7 225 28.0 70 NIL

6 1.2 180 28.0 70 NIL

7 1.0 135 29.0 71 NIL 8 1.1 135 30.0 72 NIL

9 1.4 180 30.0 72 NIL

DATE : 11.05.2017 TO 12.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.9 180 34.0 62 NIL 11 2.2 225 36.0 55 NIL

12 1.8 210 37.0 51 NIL 13 2.3 240 37.0 51 NIL

14 2.4 300 38.0 47 NIL

15 2.4 30 37.0 49 NIL

16 2.4 120 35.0 57 NIL 17 1.9 30 28.0 77 11.0

18 3.2 45 26.0 84 4.5 19 2.8 120 26.0 84 NIL 20 1.9 135 26.0 84 NIL

21

1.8

225 26.0 84 NIL

22 2.3 270 26.0 84 NIL 23 2.4 180 26.0 84 NIL

0 3.1 240 26.0 84 NIL 1 3.1 240 26.0 84 NIL

2 2.4 135 25.0 92 NIL

3 2.1 135 25.0 92 NIL

4 2.3 180 25.0 92 NIL 5 2.6 180 25.0 92 NIL

6 3.1 210 25.0 92 NIL 7 1.4 240 25.0 92 NIL

8 1.6 225 26.0 92 NIL

9 1.4 270 26.0 85 NIL

DATE : 12.05.2017 TO 13.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.3 135 35.0 46 NIL

11 1.3 225 36.0 43 NIL 12 1.6 180 37.0 44 NIL

13 1.9 240 38.0 45 NIL 14 2.1 300 40.0 42 NIL

15 2.3 300 40.0 42 NIL

16 2.4 270 40.0 42 NIL



17 2.6 270 40.0 42 NIL

18 2.1 135 39.0 41 NIL 19 1.2 135 38.0 40 NIL

20 1.3 210 38.0 40 NIL 21 1.6 240 37.0 39 NIL

22 1.7 135 38.0 43 NIL

23 1.9 135 35.0 47 NIL

0 1.8 180 34.0 46 NIL 1 2.3 210 32.0 55 NIL

2 1.9 240 32.0 55 NIL 3 2.1 240 30.0 59 NIL 4 2.4 180 30.0 59 NIL

5 1.8 240 28.0 70 NIL 6 1.6 270 28.0 70 NIL

7 1.4 270 28.0 70 NIL

8 1.3 210 29.0 71 NIL

9 1.1 225 30.0 65 NIL

DATE : 13.05.2017 TO 14.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 2.1 240 34.0 46 NIL

11 1.9 240 36.0 43 NIL 12 2.4 180 38.0 40 NIL 13 3.2 240 40.0 38 NIL

14 3.1 270 40.0 52 NIL 15 5.0 210 36.0 82 12.5

16 2.3 240 34.0 86 NIL

17 3.1 240 28.0 77 NIL

18 3.1 180 27.0 84 NIL 19 2.8 240 26.0 92 NIL

20 3.1 120 26.0 92 NIL 21 3.3 135 26.0 92 NIL

22 2.4 120 26.0 92 NIL

23 2.1 225 26.0 92 NIL

0

3.1

270 25.0 92 NIL

1 1.9 210 25.0 92 NIL

2 1.4 225 25.0 92 NIL 3 2.1 180 24.0 91 NIL 4 2.4 135 24.0 91 NIL

5 1.9 225 24.0 91 NIL

6 1.8 180 25.0 92 NIL 7 2.2 210 26.0 84 NIL

8 1.8 225 28.0 77 NIL 9 1.9 240 30.0 65 NIL

DATE : 14.05.2017 TO 15.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm)



10 1.4 180 34.0 46 NIL

11 1.5 180 35.0 47 NIL 12 1.6 210 36.0 48 NIL

13 1.9 240 38.0 45 NIL 14 1.1 210 40.0 42 NIL

15 1.5 225 40.0 42 NIL

16 2.1 225 40.0 42 NIL

17 2.3 180 38.0 45 NIL 18 2.4 180 38.0 40 NIL

19 1.8 210 36.0 48 NIL 20 1.6 210 36.0 48 NIL 21 1.7 180 34.0 51 NIL

22 1.9 180 34.0 51 NIL 23 1.3 180 32.0 55 NIL

0

1.7

225 32.0 55 NIL

1 1.8 210 30.0 65 NIL 2 1.9 225 30.0 65 NIL

3 1.3 180 29.0 64 NIL

4 1.3 135 29.0 64 NIL

5 1.5 135 29.0 64 NIL 6 1.6 120 30.0 65 NIL

7 1.1 90 31.0 60 NIL 8 1.0 180 32.0 55 NIL

9 1.4 180 33.0 50 NIL

DATE : 15.05.2017 TO 16.05.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.4 180 33.5 48 NIL 11 1.9 180 34.0 46 NIL

12 2.1 210 36.0 47 NIL

13 2.3 210 38.0 32 NIL

14 2.2 180 40.0 38 NIL 15 1.8 225 40.0 38 NIL

16 1.7 180 40.0 38 NIL 17 1.5 120 38.0 40 NIL

18 1.4 135 38.0 40 NIL

19 2.1 135 37.0 39 NIL 20 2.3 180 36.0 43 NIL 21 2.1 180 36.0 43 NIL

22 2.5 120 35.0 42 NIL

23 1.7 120 34.0 46 NIL 0

1.8

210 34.0 46 NIL

1 1.9 225 33.0 45 NIL

2 1.3 225 32.0 49 NIL 3 1.4 210 32.0 49 NIL

4 1.5 210 32.0 49 NIL 5 1.1 225 32.0 49 NIL

6 1.1 180 32.0 49 NIL

7 1.1 180 32.0 49 NIL



8 1.0 270 33.0 50 NIL

9 1.1 270 33.0 50 NIL

DATE : 16.05.2017 TO 17.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.2 180 34.0 46 NIL

11 2.1 135 35.0 47 NIL

12 2.3 225 36.0 43 NIL

13 2.1 210 36.0 43 NIL

14 1.2 225 38.0 40 NIL

15 1.6 180 38.0 45 NIL

16 1.7 180 38.0 45 NIL

17 1.9 210 36.0 48 NIL

18 1.9 225 36.0 48 NIL

19 1.7 180 36.0 48 NIL

20 1.8 210 34.0 46 NIL

21 1.7 240 34.0 46 NIL

22 2.0 240 32.0 55 NIL

23 1.9 180 32.0 55 NIL

0

2.1

270 30.0 65

NIL

1 2.2 300 30.0 65 NIL

2 2.1 300 28.0 77 NIL

3 1.9 330 28.0 77 NIL

4 1.8 180 28.0 77 NIL

5 1.7 180 28.0 77 NIL

6 1.6 225 28.0 77 NIL

7 1.2 270 29.0 71 NIL

8 1.3 210 30.0 65 NIL

9 1.3 180 32.0 55 NIL

DATE : 17.05.2017 TO 18.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.8 180 32.0 55 NIL

11 1.7 180 34.0 46 NIL

12 1.5 225 36.0 43 NIL

13 1.3 210 38.0 40 NIL

14 1.3 240 38.0 40 NIL

15 1.8 240 39.0 41 NIL

16 1.9 180 38.0 45 NIL

17 2.2 270 36.0 68 NIL

18 3.3 270 34.0 76 5

19 2.8 270 32.0 67 NIL

20 3.1 300 32.0 67 NIL

21 2.1 300 31.0 66 NIL

22 1.2 270 30.0 72 NIL

23 2.0 225 30.0 72 NIL

0 210 28.0 77 NIL



1.9

1 1.8 240 28.0 77 NIL

2 1.7 225 28.0 77 NIL

3 1.5 240 28.0 77 NIL

4 1.3 210 28.0 77 NIL

5 C - 28.0 77 NIL

6 C - 29.0 71 NIL

7 1.3 180 29.0 71 NIL

8 1.1 180 30.0 65 NIL

9 1.1 180 30.0 65 NIL

DATE :18.05.2017 TO 19.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.5 180 32.0 62 NIL

11 1.2 180 34.0 58 NIL

12 C - 36.0 54 NIL

13 C - 38.0 54 NIL

14 C - 39.0 54 NIL

15 2.2 225 38.0 54 NIL

16 3.6 315 37.0 78 NIL

17 8.9 60 36.0 86 15.0

18 9.0 315 36.0 72 NIL

19 3.5 120 34.0 74 NIL

20 2.2 225 32.0 74 NIL

21 2.5 210 31.0 78 NIL

22 2.0 180 30.0 78 NIL

23 2.1 180 30.0 81 NIL

0

1.9

180 29.0 81

8.0

1 C - 29.0 85 6.0

2 C - 28.5 85 NIL

3 C - 27.0 88 NIL

4 1.5 225 26.5 88 NIL

5 1.6 225 26.5 92 NIL

6 1.2 225 25.0 84 NIL

7 1.2 180 25.0 78 NIL

8 1.3 180 26.0 75 NIL

9 1.0 225 26.5 70 NIL

DATE : 19.05.2017 TO 20.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 2.0 135 34.0 62 NIL

11 2.2 120 36.0 58 NIL

12 C - 38.0 54 NIL

13 C - 38.0 54 NIL

14 2.0 120 38.0 54 NIL

15 2.8 90 37.0 54 NIL

16 2.5 135 36.0 58 NIL



17 2.6 120 35.0 63 NIL

18 2.3 120 29.5 68 7.0

19 2.9 90 29.0 74 NIL

20 2.4 135 29.0 74 NIL

21 2.2 210 28.5 78 NIL

22 2.0 135 28.5 78 NIL

23 C - 28.0 81 NIL

0

C

- 28.0 81

NIL

1 C - 27.5 85 NIL

2 2.2 135 27.5 85 NIL

3 2.5 120 27.0 88 NIL

4 C - 26.5 88 NIL

5 C - 26.0 92 NIL

6 2.3 135 27.0 84 NIL

7 2.1 135 29.5 78 NIL

8 2.3 120 30.5 75 NIL

9 2.1 210 32.0 70 NIL

DATE : 20.05.2017 TO 21.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.4 225 32.0 64 NIL

11 2.0 135 34.0 56 NIL

12 1.5 135 36.0 48 NIL

13 C - 36.5 50 NIL

14 C - 38.0 54 NIL

15 C - 38.5 52 NIL

16 1.8 210 38.0 54 NIL

17 2.0 210 37.0 59 NIL

18 2.5 225 36.0 55 NIL

19 2.1 225 36.0 55 NIL

20 2.3 225 34.0 68 NIL

21 1.5 135 34.0 65 NIL

22

1.2

135 32.5 74

NIL

23 1.2 180 32.5 71 NIL

0 C - 32.0 73 NIL

1 C - 32.0 70 NIL

2 C - 30.0 78 NIL

3 C - 29.0 85 NIL

4 1.5 210 28.0 88 NIL

5 2.0 225 27.5 92 NIL

6 2.5 120 28.5 81 NIL

7 2.2 120 28.5 74 NIL

8 1.5 210 29.0 85 NIL

9 1.4 210 30.0 65 NIL

DATE : 21.05.2017 TO 22.05.2017




m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.2 210 32.0 64 NIL

11 1.5 180 34.0 59 NIL

12 C - 36.0 53 NIL

13 C - 37.0 54 NIL

14 C - 38.0 54 NIL

15 C - 40.0 56 NIL

16 1.5 210 39.5 62 NIL

17 1.2 225 38.0 70 NIL

18 2.5 225 37.0 70 NIL

19 2.5 315 37.0 70 NIL

20 1.5 120 36.5 62 NIL

21 1.7 135 36.0 63 NIL

22 1.6 225 36.0 58 NIL

23 1.2 225 34.0 68 NIL

0 C - 34.0 68 NIL

1

C

- 33.0 71

NIL

2 C - 32.0 71 NIL

3 C - 30.5 83 NIL

4 1.5 225 30.0 85 NIL

5 2.3 210 30.0 76 NIL

6 2 210 29.5 85 NIL

7 1.8 225 29.0 85 NIL

8 1.6 225 30.5 75 NIL

9 1.5 225 31.5 70 NIL

DATE : 22.05.2017 TO 23.05.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.2 225 34.0 59 NIL

11 1.5 225 36.0 53 NIL

12 1.2 225 38.0 52 NIL

13 C - 40.0 47 NIL

14 C - 41.0 54 NIL

15 C - 40.0 56 NIL

16 C - 39.0 60 NIL

17 1.2 225 38.0 64 NIL

18 2.5 180 36.0 66 NIL

19 2.5 180 34.0 77 NIL

20 2.0 225 32.0 86 NIL

21 2.0 180 32.0 86 NIL

22 1.2 180 30.5 92 NIL

23 1.5 225 30.5 92 NIL

0 1.2 120 30.0 93 NIL

1 C - 30.0 93 NIL

2 C - 29.0 92 NIL

3 C - 29.0 92 NIL

4 C - 28.5 92 NIL

5 1.2 225 28.5 92 NIL



6 1.3 225 28.0 92 NIL

7 1.0 210 29.0 71 NIL

8 1.5 225 30.0 65 NIL

9 1.5 210 32.0 58 NIL

DATE : 23.05.2017 TO 24.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.2 225 34.0 62 NIL

11 1.3 210 36.0 58 NIL

12 1.0 225 38.0 57 NIL

13 C - 39.0 52 NIL

14 C - 40.0 51 NIL

15 C - 41.0 52 NIL

16 2.2 120 38.0 54 NIL

17 3.5 240 36.0 53 NIL

18 3.8 135 34.0 61 3.0

19 2.0 315 30.0 62 NIL

20 1.0 225 29.0 68 NIL

21 1.2 225 29.0 68 NIL

22 1.3 225 29.0 64 NIL

23 C - 28.0 70 NIL

0 C - 27.0 70 NIL

1 C - 27.0 70 NIL

2 C - 27.0 66 NIL

3 C - 26.0 76 NIL

4 1.2 210 25.0 76 NIL

5 1.5 210 25.0 76 NIL

6 1.0 120 27.0 77 NIL

7 1.2 225 28.5 74 NIL

8

1.5

225 30.0 72

NIL

9 1.6 225 30.5 69 NIL

DATE : 25.05.2017 TO 26.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.5 120 34.0 62 NIL

11 1.2 225 36.0 53 NIL

12 1.6 210 38.0 50 NIL

13 C - 39.0 50 NIL

14 C - 40.0 47 NIL

15

C

- 39.0 50

NIL

16 C - 38.0 50 NIL

17 1.2 210 36.0 58 NIL

18 1.3 120 36.0 53 NIL

19 1.2 120 34.0 62 NIL

20 1.5 225 33.0 68 NIL

21 1.7 180 32.0 67 NIL



22 1.8 210 32.0 67 NIL

23 C - 30.0 78 NIL

0 C - 30.0 78 NIL

1 C - 30.0 72 NIL

2 C - 29.0 78 NIL

3 C - 29.0 78 NIL

4 2.0 210 28.0 77 NIL

5 2.1 210 28.0 77 NIL

6 1.8 210 29.0 71 NIL

7 1.5 240 29.0 71 NIL

8 1.2 240 30.0 72 NIL

9 1.3 135 32.0 67 NIL

DATE : 26.05.2017 TO 27.05.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.5 210 34.0 62 NIL

11 1.2 210 35.0 69 NIL

12 1.3 225 36.0 69 NIL

13 C - 38.0 64 NIL

14 C - 40.0 56 NIL

15

C

- 39.0 41

NIL

16 8.2 45 36.0 53 NIL

17 6.2 45 27.0 84 NIL

18 C - 27.0 84 NIL

19 C - 27.0 84 NIL

20 1.2 120 27.0 84 NIL

21 2.0 135 27.0 84 NIL

22 2.0 225 27.0 84 NIL

23 1.9 225 27.0 84 NIL

0 C - 26.0 84 NIL

1 C - 26.0 84 NIL

2 C - 26.0 84 NIL

3 C - 26.0 84 NIL

4 2.2 210 24.0 91 NIL

5 2.0 210 24.0 91 NIL

6 1.5 210 24.0 83 NIL

7 1.2 225 25.0 76 NIL

8 1.5 240 27.0 77 NIL

9 1.5 225 27.0 77 NIL

DATE : 27.05.2017 TO 28.05.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.8 210 28.0 77 NIL

11 2.0 180 30.0 72 NIL

12 1.5 135 32.0 67 NIL

13 C - 33.0 56 NIL

14 C - 33.0 56 NIL



15

C

- 33.0 56

NIL

16 1.5 120 34.0 56 NIL

17 2.0 135 32.0 61 NIL

18 2.3 225 32.0 61 NIL

19 2.3 225 31.0 72 NIL

20 1.8 210 31.0 72 NIL

21 1.6 210 30.5 76 NIL

22 1.2 225 30.0 78 NIL

23 1.2 225 29.0 78 NIL

0 C - 29.0 78 NIL

1 C - 29.0 78 NIL

2 C - 29.0 78 NIL

3 C - 28.0 77 NIL

4 1.5 225 28.0 77 NIL

5 1.8 225 28.0 77 NIL

6 2.0 240 28.0 77 NIL

7 2.3 240 29.0 85 NIL

8 1.5 210 29.0 85 NIL

9 1.3 210 30.0 78 NIL

DATE : 28.05.2017 TO 29.05.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.2 210 33.0 61 NIL

11 1.6 240 34.0 62 NIL

12 1.3 180 36.0 53 NIL

13 1.4 210 36.0 58 NIL

14 1.9 225 36.0 58 NIL

15 1.8 225 36.0 58 NIL

16 2.8 330 34.0 51 NIL

17 3.2 330 34.0 51 NIL

18 3.3 360 29.0 64 NIL

19 2.8 315 28.0 70 NIL

20 2.3 315 27.0 77 NIL

21 1.8 270 28.0 70 NIL

22 1.3 300 28.0 70 NIL

23 1.3 300 28.0 70 NIL

0 C - 28.0 70 NIL

1 C - 27.0 77 NIL

2 C - 27.0 70 NIL

3 C - 27.0 70 NIL

4 2.3 330 26.0 76 NIL

5 1.7 315 26.0 76 NIL

6 1.8 270 27.0 77 NIL

7 1.1 270 28.0 77 NIL

8 1.1 240 30.0 72 NIL

9 1.3 225 32.0 61 NIL

DATE : 29.05.2017 TO 30.05.2017




m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 2.5 180 33.0 63 NIL

11 2.0 225 34.0 63 NIL

12 2.2 210 36.0 59 NIL

13 1.5 180 36.0 59 NIL

14 C - 38.0 56 NIL

15 C - 39.0 52 NIL

16 1.7 180 39.0 59 NIL

17 1.5 180 38.0 56 NIL

18 1.8 225 37.0 56 NIL

19 1.6 210 36.0 59 NIL

20 1.7 210 36.0 59 NIL

21 1.5 135 35.0 59 NIL

22 1.3 120 34.0 63 NIL

23 1.2 135 34.0 63 NIL

0 C - 32.0 68 NIL

1 C - 32.0 68 NIL

2 C - 30.0 79 NIL

3 C - 29.0 79 NIL

4 1.5 225 28.0 85 NIL

5 1.8 225 28.0 78 NIL

6 2.2 225 27.0 85 NIL

7 1.3 210 28.0 78 NIL

8 1.5 120 30.0 67 NIL

9 1.4 180 32.0 56 NIL

DATE : 30.05.2017 TO 31.05.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 2.0 120 33.0 63 NIL

11 1.5 225 34.0 63 NIL

12 1.2 120 36.0 59 NIL

13 1.2 135 38.0 56 NIL

14 C - 39.0 52 NIL

15 C - 39.5 52 NIL

16 4.5 315 39.0 68 3.5

17 5.5 315 34.0 53 NIL

18 2.1 120 32.0 62 NIL

19 1.5 120 30.0 73 NIL

20 C - 30.0 67 NIL

21 C - 30.0 67 NIL

22 C - 29.0 73 NIL

23 C - 29.0 73 NIL

0 C - 28.0 72 NIL

1 1.2 225 28.0 72 NIL

2 1.5 210 28.0 72 NIL

3 1.6 180 27.0 72 NIL

4 1.8 180 26.0 77 NIL

5 1.9 180 26.0 77 NIL

6 2.0 210 26.0 70 NIL



7 1.9 210 27.0 70 NIL

8 1.6 120 28.0 70 NIL

9 1.5 225 30.0 67 NIL

DATE: 31.05.2017 TO 01.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 2.6 120 32.5 70 NIL

11 3.0 135 34.0 62 NIL

12 2.9 240 35.0 57 NIL

13 2.8 210 35.5 55 NIL

14 2.5 240 36.5 56 NIL

15 2.9 210 36.5 56 NIL

16 3.3 240 36.0 58 NIL

17 3.6 120 35.0 63 NIL

18 4.0 60 33.0 70 NIL

19 4.5 135 32.0 73 NIL

20 4.3 120 31.5 76 NIL

21 3.8 135 31.5 76 NIL

22 3.2 210 31.0 79 NIL

23 C - 31.0 79 NIL

0

C

- 30.5 79

NIL

1 2.5 300 30.5 79 NIL

2 2.8 240 30.0 82 NIL

3 3.1 120 29.5 82 NIL

4 2.9 60 29.0 85 NIL

5 2.7 135 29.0 85 NIL

6 2.5 120 29.5 82 NIL

7 2.4 210 29.5 82 NIL

8 2.5 240 30.0 78 NIL

9 2.9 135 31.5 73 NIL

DATE : 01.06.2017 TO 02.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.8 180 32.0 68 NIL

11 1.3 180 34.0 63 NIL

12 1.4 225 36.0 50 NIL

13 1.3 210 38.0 40 NIL

14 1.6 240 38.0 45 NIL

15 2.1 330 36.0 53 NIL

16 1.8 330 32.0 62 NIL

17 2.1 240 32.0 62 NIL

18 2.2 240 32.0 62 NIL

19 1.9 225 32.0 62 NIL

20 1.6 210 31.0 62 NIL

21 1.4 180 31.0 62 NIL

22 1.3 225 30.0 73 NIL

23 210 30.0 73 NIL



1.3

0 1.0 225 30.0 73 NIL

1 1.1 180 29.0 78 NIL

2 1.2 270 29.0 78 NIL

3 1.3 270 29.0 78 NIL

4 1.3 225 28.0 85 NIL

5 1.1 210 28.0 85 NIL

6 1.1 225 28.0 85 NIL

7 1.1 240 29.0 78 NIL

8 1.0 330 30.0 79 NIL

9 1.3 330 32.0 68 NIL

DATE : 02.06.2017 TO 03.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.2 360 34.0 63 NIL

11 1.4 30 35.0 59 NIL

12 1.3 330 36.0 59 NIL

13 1.3 330 38.0 51 NIL

14 1.4 270 38.0 51 NIL

15 1.5 180 36.0 50 NIL

16 2.9 225 31.0 62 NIL

17 3.1 210 30.0 73 4.0

18 2.8 225 30.0 73 NIL

19 1.7 210 29.0 78 NIL

20 1.9 240 29.0 78 NIL

21 1.8 270 29.0 78 NIL

22 1.3 270 28.0 85 NIL

23 1.3 180 27.0 84 NIL

0

1.1

180 27.0 84

NIL

1 1.1 225 27.0 84 NIL

2 1.4 210 26.0 84 NIL

3 1.7 240 26.0 84 NIL

4 1.1 240 26.0 84 NIL

5 1.0 225 27.0 84 NIL

6 1.1 210 28.0 77 NIL

7 1.2 180 29.0 78 NIL

8 1.3 180 30.0 79 NIL

9 1.1 180 32.0 73 NIL

DATE : 03.06.2017 TO 04.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.3 180 33.0 63 NIL

11 1.1 225 35.0 64 NIL

12 1.1 210 36.0 64 NIL

13 1.3 210 37.0 56 NIL

14 1.6 210 38.0 56 NIL

15 1.5 225 38.0 56 NIL



16 1.8 210 38.0 51 NIL

17 2.1 180 37.0 47 NIL

18 1.9 210 37.0 47 NIL

19 1.8 270 36.0 54 NIL

20 1.7 180 36.0 54 NIL

21 1.7 180 35.0 54 NIL

22 1.6 225 34.0 58 NIL

23 1.6 210 34.0 58 NIL

0 1.8 240 33.0 58 NIL

1 1.7 180 33.0 58 NIL

2 1.3 270 32.0 68 NIL

3

1.3

270 30.0 73

NIL

4 1.4 180 30.0 73 NIL

5 1.3 300 30.0 73 NIL

6 1.4 300 31.0 68 NIL

7 1.3 180 32.0 68 NIL

8 1.1 270 33.0 63 NIL

9 1.1 270 34.0 63 NIL

DATE : 04.06.2017 TO 05.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.1 180 34.0 69 NIL

11 1.0 180 36.0 59 NIL

12 1.1 225 38.0 56 NIL

13 1.4 240 40.0 48 NIL

14 1.4 210 41.0 42 NIL

15 1.3 180 42.0 42 NIL

16 1.3 180 42.0 42 NIL

17 1.1 270 41.0 42 NIL

18 1.2 270 40.0 42 NIL

19 1.5 240 40.0 42 NIL

20 1.6 225 38.0 56 NIL

21 1.9 180 36.0 56 NIL

22 1.6 180 37.0 56 NIL

23 1.7 180 36.0 64 NIL

0 1.4 270 34.0 75 NIL

1 1.3 270 34.0 69 NIL

2 1.3 180 34.0 69 NIL

3 1.4 180 32.0 80 NIL

4 1.9 300 32.0 80 NIL

5

1.9

330 32.0 80

NIL

6 1.8 225 32.0 80 NIL

7 1.1 210 34.0 69 NIL

8 1.1 225 35.0 64 NIL

9 1.1 225 35.0 64 NIL

DATE : 05.06.2017 TO 06.06.2017




m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.1 180 36.0 64 NIL

11 1.0 180 37.0 56 NIL

12 1.1 225 38.0 60 NIL

13 1.3 240 38.0 60 NIL

14 1.1 225 38.0 56 NIL

15 1.3 180 38.0 56 NIL

16 1.2 120 37.0 51 NIL

17 1.1 210 36.0 59 NIL

18 1.3 225 34.0 63 NIL

19 1.4 240 34.0 63 NIL

20 1.3 180 32.0 68 NIL

21 1.4 180 32.0 68 NIL

22 1.3 240 30.0 73 NIL

23 1.7 270 28.0 77 NIL

0 1.8 270 28.0 77 NIL

1 1.6 330 28.0 77 NIL

2 1.5 315 28.0 77 NIL

3 1.1 330 28.0 77 NIL

4 C - 28.0 77 NIL

5 C - 28.0 77 NIL

6 1.0 180 28.0 77 NIL

7 1.1 120 28.0 77 NIL

8 1.0 120 29.0 71 NIL

9 1.1 135 30.0 73 NIL

DATE : 06.06.2017 TO 07.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.0 180 32.0 68 NIL

11 1.1 225 33.0 63 NIL

12 1.2 240 34.0 63 NIL

13 1.0 240 34.0 63 NIL

14 1.3 225 36.0 54 NIL

15 1.3 180 36.0 54 NIL

16 1.2 225 34.0 58 NIL

17 1.4 210 34.0 58 NIL

18 1.7 210 33.0 58 NIL

19 1.8 270 33.0 58 NIL

20 1.8 270 32.0 62 NIL

21 1.5 240 32.0 62 NIL

22 1.5 180 31.0 62 NIL

23 1.4 180 30.0 73 NIL

0 1.3 135 30.0 73 NIL

1 1.7 120 29.0 71 NIL

2 1.4 120 29.0 71 NIL

3 C - 28.0 77 NIL

4 C - 28.0 77 NIL

5 C - 28.0 77 NIL

6 C - 29.0 71 NIL



7 1.1 180 30.0 73 NIL

8 1.0 180 31.0 68 NIL

9 1.2 225 32.0 68 NIL

DATE : 07.06.2017 TO 08.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.1 180 34.0 63 NIL

11 1.2 270 35.0 54 NIL

12 1.3 225 36.0 59 NIL

13 1.3 240 36.0 59 NIL

14 1.0 240 36.0 59 NIL

15

1.1

270 36.0 54

NIL

16 1.3 225 36.0 54 NIL

17 1.3 270 36.0 54 NIL

18 1.2 270 35.0 54 NIL

19 1.6 120 34.0 58 NIL

20 1.5 120 34.0 58 NIL

21 1.1 135 34.0 58 NIL

22 1.1 180 32.0 68 NIL

23 C - 32.0 68 NIL

0 C - 31.0 68 NIL

1 C - 31.0 68 NIL

2 C - 30.0 73 NIL

3 1.2 180 30.0 73 NIL

4 1.2 180 28.0 78 NIL

5 1.2 225 28.0 78 NIL

6 1.2 240 29.0 92 NIL

7 1.1 210 32.0 80 NIL

8 1.1 225 32.0 80 NIL

9 1.0 240 34.0 68 NIL

DATE : 08.06.2017 TO 09.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.1 180 35.5 64 NIL

11 1.0 225 36.0 64 NIL

12 1.1 240 37.0 52 NIL

13 C - 38.0 60 NIL

14 C - 39.0 52 NIL

15

C

- 40.0 52

NIL

16 C - 39.0 52 NIL

17 1.2 240 37.0 47 NIL

18 1.3 270 36.0 54 NIL

19 1.3 180 36.0 54 NIL

20 1.2 180 35.0 54 NIL

21 1.2 225 34.0 58 NIL

22 1.1 240 34.0 58 NIL



23 C - 33.5 58 NIL

0 C - 32.0 62 NIL

1 C - 30.0 73 NIL

2 C - 30.0 73 NIL

3 C - 29.0 78 NIL

4 1.2 180 29.0 78 NIL

5 1.3 180 30.0 73 NIL

6 1.3 225 30.0 73 NIL

7 1.4 240 32.0 68 NIL

8 1.1 180 32.0 68 NIL

9 1.5 180 34.0 63 NIL

DATE : 09.06.2017 TO 10.06.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.9 225 35.0 54 NIL

11 3.2 225 36.0 54 NIL

12 4.0 120 38.0 47 NIL

13 4.6 135 38.0 47 NIL

14 4.2 210 39.0 42 NIL

15 4.9 90 38.0 47 NIL

16 5.8 315 36.0 54 NIL

17 6.7 315 34.0 58 NIL

18 5.3 180 32.0 68 NIL

19

4.2

225 30.0 79

NIL

20 4.0 135 30.0 79 NIL

21 2.0 240 29.0 85 NIL

22 1.2 240 29.0 85 NIL

23 1.2 225 29.0 78 NIL

0 2.3 225 29.0 78 NIL

1 1.5 225 28.0 85 NIL

2 1.3 225 28.0 85 NIL

3 1.2 240 28.0 85 NIL

4 1.6 120 27.0 84 NIL

5 2.6 120 26.0 92 NIL

6 3.3 120 27.0 84 NIL

7 1.8 210 30.0 73 NIL

8 1.5 225 31.0 68 NIL

9 1.2 225 32.0 68 NIL

DATE : 10.06.2017 TO 11.06.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.1 180 33.0 63 NIL 11 1.2 240 34.0 69 NIL

12 2.0 120 35.0 61 NIL 13 1.9 225 36.0 64 NIL

14 C - 38.0 47 NIL

15 C - 38.0 47 NIL



16 C - 37.0 51 NIL

17 1.6 225 36.0 54 NIL 18 2.2 225 34.0 63 NIL

19 2.4 225 32.0 62 NIL 20 2 210 32.0 62 NIL

21 1.9 240 31.0 68 NIL

22

1.6

225 30.0 79 NIL 23 1.5 225 30.0 79 NIL 0 1.5 240 29.0 78 NIL

1 C - 29.0 78 NIL 2 C - 28.5 78 NIL

3 C - 28.0 78 NIL

4 1.8 225 28.0 85 NIL

5 2.5 240 28.0 77 NIL 6 2.4 240 29.0 77 NIL

7 2.2 240 30.0 78 NIL 8 2.0 210 32.0 79 NIL

9 1.9 210 33.0 62 NIL

DATE : 11.06.2017 TO 12.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 2.5 120 34.0 63 NIL 11 2.4 135 34.0 63 NIL

12 2.6 135 35.0 61 NIL

13 1.8 45 36.5 54 NIL

14 1.6 225 37.0 51 NIL 15 2.5 225 38.0 51 NIL

16 1.5 180 37.0 51 NIL 17 2.6 240 35.0 54 NIL

18 1.5 120 33.0 63 NIL

19 1.2 90 32.0 74 NIL

20 1.4 90 32.0 74 NIL 21

1.4

135 31.5 68 NIL

22 1.3 225 31.0 68 NIL 23 1.5 225 30.0 79 NIL 0 1.4 225 29.0 78 NIL

1 1.6 240 28.0 85 NIL

2 1.5 120 28.0 85 NIL 3 1.2 225 28.0 85 NIL

4 1.5 225 27.0 84 NIL 5 1.6 225 27.0 84 NIL

6 1.9 225 28.0 85 NIL

7 1.8 210 30.0 73 NIL

8 2.2 120 31.0 62 NIL 9 2.0 135 31.0 62 NIL

DATE : 12.06.2017 TO 13.06.2017




m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.8 225 33.5 63 NIL 11 2.3 210 34.0 63 NIL

12 1.6 120 36.0 50 NIL

13 1.5 120 37.0 51 NIL 14 C - 37.0 51 NIL 15 C - 36.0 53 NIL

16 C - 34.0 56 NIL

17

2.2

225 34.0 62 NIL

18 2.0 225 33.0 62 NIL

19 2.6 210 33.0 62 NIL

20 1.8 225 32.0 74 NIL 21 2.2 225 31.5 74 NIL

22 1.6 180 31.0 74 NIL 23 1.9 180 31.0 74 NIL

0 1.2 180 30.0 79 NIL

1 1.5 210 29.0 85 NIL

2 1.2 120 29.0 85 NIL 3 1.3 30 28.0 85 NIL

4 1.5 225 28.0 85 NIL 5 1.6 120 27.0 84 NIL 6 2.0 135 29.0 78 NIL

7 2.3 135 30.0 79 NIL 8 1.5 240 31.0 68 NIL

9 1.4 30 32.0 68 NIL

DATE : 13.06.2017 TO 14.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.8 180 34.0 63 NIL

11 1.6 225 36.0 59 NIL 12

1.7

240 38.0 47 NIL 13 1.9 225 38.0 47 NIL

14 1.9 240 38.0 47 NIL

15 2.1 180 38.0 47 NIL 16 2.3 210 37.0 47 NIL

17 1.9 270 36.0 54 NIL 18 1.8 240 36.0 54 NIL

19 1.9 270 35.0 50 NIL

20 2.1 210 34.0 58 NIL

21 2.2 120 34.0 58 NIL 22 2.3 30 34.0 58 NIL

23 2.3 225 32.0 62 NIL 0 1.6 120 32.0 62 NIL

1 1.3 135 30.0 73 NIL

2 1.3 135 30.0 73 NIL

3 1.4 240 30.0 73 NIL 4 1.2 225 30.0 73 NIL



5 1.9 210 30.0 73 NIL

6 1.4 240 31.0 62 NIL 7 1.3 360 32.0 68 NIL

8 1.1 360 33.0 58 NIL 9 1.0 60 34.0 63 NIL

DATE : 14.06.2017 TO 15.06.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.0 120 35.0 53 NIL

11 1.1 180 36.0 53 NIL 12 1.2 210 38.0 47 NIL

13 1.3 240 39.0 42 NIL

14 1.4 240 39.0 42 NIL

15 1.3 180 39.0 42 NIL 16

1.4

225 38.0 45 NIL

17 1.5 210 36.0 48 NIL

18 2.3 90 31.0 78 5.0 19 2.4 120 28.0 85 NIL

20 2.1 60 28.0 85 NIL 21 1.9 270 27.5 85 NIL 22 C - 27.0 84 NIL

23 C - 27.0 84 NIL 0 C - 27.0 84 NIL

1 C - 27.0 84 NIL

2 C - 27.0 84 NIL

3 0.8 30 27.0 84 NIL 4 1.0 90 27.0 84 NIL

5 1.1 90 28.0 85 NIL 6 1.2 120 28.0 85 NIL

7 1.1 240 29.0 85 NIL

8 1.0 225 30.0 79 NIL

9 1.1 180 31.0 74 NIL

DATE : 15.06.2017 TO 16.06.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.1 180 32.0 74 NIL

11 0.9 225 33.0 69 NIL

12 1.0 210 34.0 69 NIL

13 2.8 240 26.0 85 6.0

14 2.3 360 26.0 85 NIL

15

1.9

360 26.0 85

NIL

16 C - 26.0 85 NIL

17 C - 26.0 85 NIL

18 C - 26.0 85 NIL

19 C - 27.0 84 NIL

20 C - 27.0 84 NIL



21 1.0 240 27.0 84 NIL

22 1.1 270 26.0 85 NIL

23 1.2 270 26.0 85 NIL

0 1.3 270 26.0 85 NIL 1 1.4 240 26.0 85 NIL

2 1.3 210 26.0 85 NIL

3 1.4 210 26.0 85 NIL

4 1.6 240 26.0 85 NIL 5 1.3 270 26.0 85 NIL

6 1.1 270 27.0 84 NIL 7 1.3 330 27.0 84 NIL

8 1.6 300 28.0 85 NIL

9 1.2 180 29.0 74 NIL

DATE : 16.06.2017 TO 17.06.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10 1.3 180 31.0 68 NIL

11 1.2 180 32.0 74 NIL

12 1.1 225 33.0 63 NIL

13

1.0

240 34.0 63

NIL

14 1.0 225 34.0 63 NIL

15 0.9 240 34.0 63 NIL

16 0.9 180 33.0 63 NIL

17 1.2 210 32.5 70 NIL

18 1.3 270 32.0 74 NIL

19 1.4 240 32.0 74 NIL

20 1.2 270 31.0 68 NIL

21 C - 30.0 79 NIL 22 C - 30.0 79 NIL

23 0.9 225 30.0 73 NIL

0 0.8 210 29.0 78 NIL

1 1.0 240 29.0 78 NIL

2 1.1 240 28.0 77 NIL

3 1.2 225 28.0 77 NIL

4 1.3 180 28.0 77 NIL

5 1.1 180 28.0 77 NIL

6 1.3 180 28.0 77 NIL

7 1.2 225 28.0 77 NIL

8 1.1 240 30.0 67 NIL

9 1.0 210 31.0 68 NIL

DATE : 17.06.2017 TO 18.06.2017



Temperature (0C)

Relative humidity

(%)

Rain fall

(mm) 10

1.2

180 32.0 68

NIL

11 1.3 225 34.0 63 NIL

12 1.4 210 36.0 59 NIL



13 1.3 240 37.0 51 NIL

14 1.3 180 38.0 51 NIL

15 1.2 225 38.0 51 NIL

16 1.3 225 37.0 51 NIL

17 1.4 210 36.0 59 NIL

18 1.5 240 36.0 59 NIL

19 1.6 225 35.0 54 NIL

20 1.7 225 34.0 53 NIL

21 1.9 270 32.0 62 NIL

22 1.8 270 32.0 62 NIL

23 1.6 240 31.0 62 NIL

0 1.7 210 31.0 62 NIL

1 1.9 180 30.0 73 NIL

2 1.6 180 30.0 73 NIL

3 1.6 210 30.0 73 NIL

4 1.7 225 30.0 73 NIL

5 1.1 210 30.0 73 NIL

6 1.2 225 30.0 73 NIL

7 1.0 240 30.0 73 NIL

8 1.1 180 31.0 68 NIL

9 1.0 135 32.0 68 NIL

DATE : 18.06.2017 TO 19.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.1 180 32.0 62 NIL

11 1.0 225 33.0 58 NIL

12 1.2 180 34.0 58 NIL

13 1.2 210 36.0 54 NIL

14

C

- 36.0 54

NIL

15 C - 38.0 51 NIL

16 C - 38.0 51 NIL

17 1.1 210 38.0 51 NIL

18 1.3 240 36.0 50 NIL

19 1.3 240 36.0 50 NIL

20 1.4 240 35.0 50 NIL

21 1.7 180 34.0 51 NIL

22 1.8 180 34.0 51 NIL

23 1.9 225 32.0 62 NIL

0 1.9 225 32.0 62 NIL

1 1.3 240 31.0 56 NIL

2 1.4 240 30.0 67 NIL

3 1.3 180 30.0 67 NIL

4 1.4 225 30.0 67 NIL

5 1.5 210 30.0 67 NIL

6 1.5 210 30.0 67 NIL

7 1.0 180 30.0 67 NIL

8 1.1 180 31.0 62 NIL

9 1.2 225 32.0 62 NIL

DATE : 19.06.2017 TO 20.06.2017




m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.4 270 33.0 74 NIL

11 1.6 225 34.0 62 NIL

12 1.5 210 36.0 58 NIL

13 1.7 210 38.0 58 NIL

14

1.8

240 38.0 58

NIL

15 1.9 180 36.0 53 NIL

16 1.9 180 36.0 86 NIL

17 1.3 225 29.0 96 15.0

18 1.4 135 29.0 78 NIL

19 1.6 120 28.0 85 NIL

20 1.7 180 28.0 85 NIL

21 1.8 270 27.0 84 NIL

22 1.3 270 27.0 84 NIL

23 1.3 240 27.0 84 NIL

0 1.4 270 26.0 84 NIL

1 2.1 270 26.0 84 NIL

2 1.8 300 26.0 84 NIL

3 1.9 330 26.0 84 NIL

4 2.2 360 26.0 100 20.0

5 2.1 330 26.0 92 NIL

6 C - 26.0 92 NIL

7 C - 26.0 92 NIL

8 C - 26.0 92 NIL

9 C - 26.0 92 NIL

DATE : 20.06.2017 TO 21.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 0.9 330 28.0 85 NIL

11 1.0 315 29.0 92 NIL

12 1.1 270 30.0 85 NIL

13 1.2 270 30.0 85 NIL

14 C - 30.0 85 NIL

15 C - 30.0 85 NIL

16

C

- 29.0 85

NIL

17 C - 28.0 85 NIL

18 1.2 270 28.0 85 NIL

19 1.3 240 28.0 85 NIL

20 1.3 240 28.0 85 NIL

21 1.3 240 27.0 84 NIL

22 1.2 240 27.0 84 NIL

23 1.4 225 27.0 84 NIL

0 1.5 270 26.5 84 NIL

1 1.6 270 26.0 84 NIL

2 1.7 270 26.0 84 NIL

3 1.2 225 26.0 84 NIL



4 1.3 225 26.0 84 NIL

5 C - 26.0 84 NIL

6 C - 27.0 84 NIL

7 C - 27.0 84 NIL

8 1.0 270 28.0 85 NIL

9 1.6 120 30.0 78 NIL

DATE : 21.06.2017 TO 22.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10

1.1

180 32.0 68

NIL

11 1.3 210 33.0 62 NIL

12 1.9 240 34.0 63 NIL

13 1.9 210 34.0 63 NIL

14 2.1 360 30.0 79 NIL

15 1.6 330 28.0 85 NIL

16 1.7 360 28.0 85 NIL

17 1.4 270 28.0 85 10.0

18 1.3 360 28.0 98 5.0

19 1.4 330 27.0 84 NIL

20 1.3 360 27.0 84 NIL

21 1.1 360 27.0 84 NIL

22 1.3 210 26.0 84 NIL

23 1.3 270 26.0 84 NIL

0 1.2 240 26.0 84 NIL

1 1.2 210 26.0 84 NIL

2 1.1 240 26.0 84 NIL

3 1.2 225 26.0 84 NIL

4 1.3 270 26.0 84 NIL

5 1.0 180 27.0 84 NIL

6 0.9 210 27.0 84 NIL

7 0.8 240 27.0 84 NIL

8 0.9 180 28.0 88 NIL

9 1.1 225 29.0 81 NIL

DATE : 22.06.2017 TO 23.06.2017


m/sec

Wind direction

from No.

Temperature

(0C)

Relative

humidity (%)

Rain

fall (mm)

10 1.4 180 32.0 68 NIL

11

1.5

180 34.0 75

NIL

12 1.3 210 35.0 64 NIL

13 1.7 240 36.0 50 NIL

14 1.9 225 36.0 50 NIL

15 1.6 330 34.0 58 NIL

16 1.9 360 29.0 86 NIL

17 1.8 360 28.0 85 NIL

18 1.9 300 28.0 85 NIL

19 1.7 360 28.0 85 5.0



20 C - 27.0 85 10.0

21 C - 27.0 96 15.0

22

C - 26.0 85

NIL

23 1.1 360 26.0 85 NIL

0 1.2 330 26.0 85 NIL

1 1.2 300 26.0 85 NIL

2 1.3 300 26.0 85 NIL

3 1.3 330 26.0 85 NIL

4 1.4 270 26.0 85 NIL

5 1.4 270 27.0 86 NIL

6 1.5 270 27.0 86 NIL

7 1.1 225 28.0 85 NIL

8 1.1 240 29.0 79 NIL

9 1.2 240 30.0 79 NIL





ANNEXURE XII:AVG. CONC. OF AMBIENT AIR QUALITY MONITORING RESULTS (MARCH –JUNE 2017)

REPORT ON AMBIENT AIR QUALITY MONITORING

Monitored by: ENVIROCHECK Assigned by : ARCADIS India Pvt. Ltd.

63/B, Rastraguru Avn. 3rd Floor, Tower B, Logix Techno Park

Kolkata - 700028 Plot No. 5, Sector – 127, Noida, UP.

Location : Bansia village (AAQ-01) Lat/ Long : 23037’56”N / 87018’58”E

Date Pollution level in µg/m3 mg/m3 Pollution level in µg/m3

PM10 PM2.5 SO2 NOx CO VOC MHC NMHC

22.03.17 to 23.03.17 108.5 48.2 7.2 24.1 <0.1 <1.0 <65.0 <25.0

25.03.17 to 26.03.17 106.5 46.5 6.7 23.7 <0.1 <1.0 <65.0 <25.0

27.03.17 to 28.03.17 110.5 50.1 6.3 25.0 <0.1 <1.0 <65.0 <25.0

29.03.17 to 30.03.17 96.2 48.2 5.6 24.6 <0.1 <1.0 <65.0 <25.0

04.04.17 to 05.04.17 98.5 45.1 5.8 25.0 <0.1 <1.0 <65.0 <25.0

06.04.17 to 07.04.17 90.1 46.8 6.1 23.7 <0.1 <1.0 <65.0 <25.0

12.04.17 to 13.04.17 89.5 43.2 5.8 22.5 <0.1 <1.0 <65.0 <25.0

14.04.17 to 15.04.17 106.5 51.8 7.2 24.9 <0.1 <1.0 <65.0 <25.0

20.04.17 to 21.04.17 91.2 49.5 6.3 23.7 <0.1 <1.0 <65.0 <25.0

22.04.17 to 23.04.17 102.6 50.1 6.5 25.0 <0.1 <1.0 <65.0 <25.0





28.04.17 to 29.04.17 110.8 52.6 6.7 25.6 <0.1 <1.0 <65.0 <25.0

30.04.17 to 01.05.17 91.2 48.5 6.1 23.7 <0.1 <1.0 <65.0 <25.0

06.05.17 to 07.05.17 86.5 45.2 5.8 25.2 <0.1 <1.0 <65.0 <25.0

08.05.17 to 09.05.17 80.1 43.8 5.6 23.2 <0.1 <1.0 <65.0 <25.0

14.05.17 to 15.05.17 91.5 46.5 6.3 24.7 <0.1 <1.0 <65.0 <25.0

16.05.17 to 17.05.17 112.6 50.1 7.4 26.5 <0.1 <1.0 <65.0 <25.0

22.05.17 to 23.05.17 102.5 49.2 6.3 25.2 <0.1 <1.0 <65.0 <25.0

24.05.17 to 25.05.17 106.1 51.2 7.2 23.2 <0.1 <1.0 <65.0 <25.0

30.05.17 to 01.06.17 110.6 52.6 7.4 25.2 <0.1 <1.0 <65.0 <25.0

01.06.17 to 02.06.17 86.2 46.2 6.7 25.1 <0.1 <1.0 <65.0 <25.0

07.06.17 to 08.06.17 90.1 48.5 6.5 24.8 <0.1 <1.0 <65.0 <25.0

09.06.17 to 10.06.17 86.5 45.2 6.3 23.3 <0.1 <1.0 <65.0 <25.0

15.06.17 to 16.06.17 106.5 53.1 6.9 25.2 <0.1 <1.0 <65.0 <25.0

17.06.17 to 18.06.17 92.5 48.5 6.5 23.7 <0.1 <1.0 <65.0 <25.0







Location : Hetadoba village (AAQ-02) Lat/ Long : 23036’48”N / 87017’26”E



22.03.17 to 23.03.17 116.2 53.2 7.8 26.5 <0.1 <1.0 <65.0 <25.0

25.03.17 to 26.03.17 110.6 52.8 7.6 25.0 <0.1 <1.0 <65.0 <25.0

27.03.17 to 28.03.17 116.5 53.6 8.0 28.5 <0.1 <1.0 <65.0 <25.0

29.03.17 to 30.03.17 118.5 54.8 8.3 25.0 <0.1 <1.0 <65.0 <25.0

04.04.17 to 05.04.17 106.2 52.6 7.6 23.5 <0.1 <1.0 <65.0 <25.0

06.04.17 to 07.04.17 102.8 50.1 7.0 26.5 <0.1 <1.0 <65.0 <25.0

12.04.17 to 13.04.17 108.5 51.8 7.6 25.0 <0.1 <1.0 <65.0 <25.0

14.04.17 to 15.04.17 96.2 49.2 6.7 23.8 <0.1 <1.0 <65.0 <25.0

20.04.17 to 21.04.17 98.5 48.6 7.0 22.1 <0.1 <1.0 <65.0 <25.0

22.04.17 to 23.04.17 106.5 49.8 7.2 25.0 <0.1 <1.0 <65.0 <25.0





28.04.17 to 29.04.17 104.1 48.2 7.4 26.5 <0.1 <1.0 <65.0 <25.0

30.04.17 to 01.05.17 89.2 46.5 7.0 25.0 <0.1 <1.0 <65.0 <25.0

06.05.17 to 07.05.17 93.5 48.2 6.7 23.5 <0.1 <1.0 <65.0 <25.0

08.05.17 to 09.05.17 92.1 45.2 6.3 25.0 <0.1 <1.0 <65.0 <25.0

14.05.17 to 15.05.17 96.5 48.5 6.7 23.8 <0.1 <1.0 <65.0 <25.0

16.05.17 to 17.05.17 91.2 49.6 6.3 21.5 <0.1 <1.0 <65.0 <25.0

22.05.17 to 23.05.17 90.1 48.2 6.1 23.1 <0.1 <1.0 <65.0 <25.0

24.05.17 to 25.05.17 108.2 51.2 7.4 25.6 <0.1 <1.0 <65.0 <25.0

30.05.17 to 01.06.17 110.2 53.6 7.2 26.5 <0.1 <1.0 <65.0 <25.0

01.06.17 to 02.06.17 102.6 51.8 7.0 25.0 <0.1 <1.0 <65.0 <25.0

07.06.17 to 08.06.17 106.5 52.1 7.2 26.5 <0.1 <1.0 <65.0 <25.0

09.06.17 to 10.06.17 89.2 48.2 6.3 23.1 <0.1 <1.0 <65.0 <25.0

15.06.17 to 16.06.17 82.6 49.6 6.1 22.5 <0.1 <1.0 <65.0 <25.0

17.06.17 to 18.06.17 83.5 51.2 6.3 23.8 <0.1 <1.0 <65.0 <25.0







Location : Patswara village (AAQ-03) Lat/ Long : 23036’20”N / 87015’44”E



21.03.17 to 22.03.17 96.2 45.8 6.5 23.5 <0.1 <1.0 <65.0 <25.0

24.03.17 to 25.03.17 91.5 43.6 6.3 20.0 <0.1 <1.0 <65.0 <25.0

27.03.17 to 28.03.17 89.2 42.2 6.1 21.5 <0.1 <1.0 <65.0 <25.0

29.03.17 to 30.03.17 86.2 41.3 5.9 22.8 <0.1 <1.0 <65.0 <25.0

04.04.17 to 05.04.17 81.5 43.8 5.7 23.5 <0.1 <1.0 <65.0 <25.0

06.04.17 to 07.04.17 86.2 46.2 6.1 22.5 <0.1 <1.0 <65.0 <25.0

12.04.17 to 13.04.17 91.2 48.5 6.7 23.5 <0.1 <1.0 <65.0 <25.0

14.04.17 to 15.04.17 92.6 49.2 6.5 22.8 <0.1 <1.0 <65.0 <25.0

20.04.17 to 21.04.17 93.5 48.6 6.3 26.5 <0.1 <1.0 <65.0 <25.0

22.04.17 to 23.04.17 91.5 45.8 6.1 23.8 <0.1 <1.0 <65.0 <25.0





28.04.17 to 29.04.17 86.2 43.2 6.1 22.6 <0.1 <1.0 <65.0 <25.0

30.04.17 to 01.05.17 91.5 48.6 7.0 25.0 <0.1 <1.0 <65.0 <25.0

06.05.17 to 07.05.17 82.5 42.1 6.7 23.5 <0.1 <1.0 <65.0 <25.0

08.05.17 to 09.05.17 80.1 41.6 6.5 22.8 <0.1 <1.0 <65.0 <25.0

14.05.17 to 15.05.17 86.2 46.5 6.3 23.5 <0.1 <1.0 <65.0 <25.0

16.05.17 to 17.05.17 92.5 48.6 7.2 25.0 <0.1 <1.0 <65.0 <25.0

22.05.17 to 23.05.17 96.2 51.2 7.4 26.5 <0.1 <1.0 <65.0 <25.0

24.05.17 to 25.05.17 86.5 45.2 6.5 25.0 <0.1 <1.0 <65.0 <25.0

30.05.17 to 01.06.17 80.1 43.8 6.3 23.5 <0.1 <1.0 <65.0 <25.0

01.06.17 to 02.06.17 82.6 45.2 5.9 26.1 <0.1 <1.0 <65.0 <25.0

07.06.17 to 08.06.17 83.2 43.6 5.7 24.8 <0.1 <1.0 <65.0 <25.0

09.06.17 to 10.06.17 81.6 45.1 6.1 23.5 <0.1 <1.0 <65.0 <25.0

15.06.17 to 16.06.17 86.5 48.3 5.7 26.8 <0.1 <1.0 <65.0 <25.0

17.06.17 to 18.06.17 82.1 43.8 5.4 23.5 <0.1 <1.0 <65.0 <25.0







Location : Andal Town (AAQ-04) Lat/ Long : 23035’34”N / 87012’28”E



20.03.17 to 21.03.17 112.6 56.2 8.3 32.5 <0.1 <1.0 <65.0 <25.0

24.03.17 to 25.03.17 123.6 58.3 8.7 35.0 <0.1 <1.0 <65.0 <25.0

31.03.17 to 01.04.17 110.2 53.8 8.5 30.0 <0.1 <1.0 <65.0 <25.0

02.04.17 to 03.04.17 109.5 52.1 8.9 28.1 <0.1 <1.0 <65.0 <25.0

08.04.17 to 09.04.17 112.5 54.8 9.1 28.5 <0.1 <1.0 <65.0 <25.0

10.04.17 to 11.04.17 116.2 51.6 9.6 30.0 <0.1 <1.0 <65.0 <25.0

16.04.17 to 17.04.17 118.5 52.8 10.2 31.5 <0.1 <1.0 <65.0 <25.0

18.04.17 to 19.04.17 110.8 50.6 9.3 30.0 <0.1 <1.0 <65.0 <25.0

24.04.17 to 25.04.17 108.5 49.2 9.1 28.5 <0.1 <1.0 <65.0 <25.0

26.04.17 to 27.04.17 96.5 45.6 7.8 25.0 <0.1 <1.0 <65.0 <25.0





02.05.17 to 03.05.17 93.5 48.2 7.4 26.5 <0.1 <1.0 <65.0 <25.0

04.05.17 to 05.05.17 90.1 46.1 7.2 23.8 <0.1 <1.0 <65.0 <25.0

10.05.17 to 11.05.17 116.2 53.8 9.1 28.5 <0.1 <1.0 <65.0 <25.0

12.05.17 to 13.05.17 112.8 52.1 8.9 32.6 <0.1 <1.0 <65.0 <25.0

18.05.17 to 19.05.17 108.5 51.3 8.7 35.0 <0.1 <1.0 <65.0 <25.0

20.05.17 to 21.05.17 106.2 50.1 8.5 31.8 <0.1 <1.0 <65.0 <25.0

26.05.17 to 27.05.17 112.6 53.8 9.3 32.5 <0.1 <1.0 <65.0 <25.0

28.05.17 to 29.05.17 120.5 56.2 10.4 35.0 <0.1 <1.0 <65.0 <25.0

03.06.17 to 04.06.17 110.6 54.6 10.2 32.1 <0.1 <1.0 <65.0 <25.0

05.06.17 to 06.06.17 106.2 52.8 9.6 30.0 <0.1 <1.0 <65.0 <25.0

11.06.17 to 12.06.17 98.5 48.6 8.5 26.5 <0.1 <1.0 <65.0 <25.0

13.06.17 to 14.06.17 96.2 46.1 8.7 28.1 <0.1 <1.0 <65.0 <25.0

19.06.17 to 20.06.17 106.5 51.8 9.1 30.0 <0.1 <1.0 <65.0 <25.0

21.06.17 to 22.06.17 102.8 50.1 8.9 28.5 <0.1 <1.0 <65.0 <25.0







Location : Bahula village (AAQ-05) Lat/ Long : 23039’40”N / 87011’52”E



20.03.17 to 21.03.17 123.5 56.2 9.3 35.0 <0.1 <1.0 <65.0 <25.0

24.03.17 to 25.03.17 120.6 52.8 9.1 32.6 <0.1 <1.0 <65.0 <25.0

31.03.17 to 01.04.17 110.8 50.1 8.5 30.0 <0.1 <1.0 <65.0 <25.0

02.04.17 to 03.04.17 118.5 54.8 9.1 32.8 <0.1 <1.0 <65.0 <25.0

08.04.17 to 09.04.17 120.6 56.2 10.2 35.0 <0.1 <1.0 <65.0 <25.0

10.04.17 to 11.04.17 110.8 53.2 9.1 34.1 <0.1 <1.0 <65.0 <25.0

16.04.17 to 17.04.17 92.6 49.2 8.5 30.0 <0.1 <1.0 <65.0 <25.0

18.04.17 to 19.04.17 93.5 48.5 7.8 28.5 <0.1 <1.0 <65.0 <25.0

24.04.17 to 25.04.17 90.1 46.1 7.6 26.1 <0.1 <1.0 <65.0 <25.0

26.04.17 to 27.04.17 118.5 54.2 9.3 36.2 <0.1 <1.0 <65.0 <25.0





02.05.17 to 03.05.17 120.6 56.1 9.1 35.0 <0.1 <1.0 <65.0 <25.0

04.05.17 to 05.05.17 121.5 54.8 9.3 32.6 <0.1 <1.0 <65.0 <25.0

10.05.17 to 11.05.17 116.5 53.6 8.7 33.1 <0.1 <1.0 <65.0 <25.0

12.05.17 to 13.05.17 113.5 52.8 8.5 32.5 <0.1 <1.0 <65.0 <25.0

18.05.17 to 19.05.17 118.2 54.3 9.1 32.8 <0.1 <1.0 <65.0 <25.0

20.05.17 to 21.05.17 112.6 53.1 8.5 31.5 <0.1 <1.0 <65.0 <25.0

26.05.17 to 27.05.17 98.2 50.1 7.8 30.0 <0.1 <1.0 <65.0 <25.0

28.05.17 to 29.05.17 96.5 48.6 7.4 32.6 <0.1 <1.0 <65.0 <25.0

03.06.17 to 04.06.17 90.1 46.5 7.2 30.0 <0.1 <1.0 <65.0 <25.0

05.06.17 to 06.06.17 92.5 48.6 7.4 32.5 <0.1 <1.0 <65.0 <25.0

11.06.17 to 12.06.17 102.5 51.8 8.3 35.0 <0.1 <1.0 <65.0 <25.0

13.06.17 to 14.06.17 98.2 50.1 7.8 30.0 <0.1 <1.0 <65.0 <25.0

19.06.17 to 20.06.17 92.5 48.5 7.2 31.5 <0.1 <1.0 <65.0 <25.0

21.06.17 to 22.06.17 91.8 46.2 6.7 30.0 <0.1 <1.0 <65.0 <25.0







Location : Bhatmura village (AAQ-06) Lat/ Long : 23041’29”N / 87015’43”E



20.03.17 to 21.03.17 116.2 54.2 8.5 31.5 <0.1 <1.0 <65.0 <25.0

24.03.17 to 25.03.17 120.5 56.2 10.4 36.5 <0.1 <1.0 <65.0 <25.0

31.03.17 to 01.04.17 128.5 58.6 12.2 32.5 <0.1 <1.0 <65.0 <25.0

02.04.17 to 03.04.17 132.5 63.5 12.8 36.8 <0.1 <1.0 <65.0 <25.0

08.04.17 to 09.04.17 126.5 52.6 12.2 35.0 <0.1 <1.0 <65.0 <25.0

10.04.17 to 11.04.17 106.5 56.1 10.2 30.0 <0.1 <1.0 <65.0 <25.0

16.04.17 to 17.04.17 110.8 58.2 11.3 32.5 <0.1 <1.0 <65.0 <25.0

18.04.17 to 19.04.17 120.6 56.1 11.5 28.5 <0.1 <1.0 <65.0 <25.0

24.04.17 to 25.04.17 126.5 59.1 11.3 30.0 <0.1 <1.0 <65.0 <25.0

26.04.17 to 27.04.17 120.8 56.8 10.4 26.8 <0.1 <1.0 <65.0 <25.0





02.05.17 to 03.05.17 110.6 56.2 9.1 25.0 <0.1 <1.0 <65.0 <25.0

04.05.17 to 05.05.17 120.6 58.1 10.2 32.5 <0.1 <1.0 <65.0 <25.0

10.05.17 to 11.05.17 136.5 65.2 12.2 35.0 <0.1 <1.0 <65.0 <25.0

12.05.17 to 13.05.17 128.5 62.1 10.4 30.0 <0.1 <1.0 <65.0 <25.0

18.05.17 to 19.05.17 120.6 58.6 9.1 26.1 <0.1 <1.0 <65.0 <25.0

20.05.17 to 21.05.17 123.8 56.1 12.2 28.6 <0.1 <1.0 <65.0 <25.0

26.05.17 to 27.05.17 120.6 55.8 11.5 25.0 <0.1 <1.0 <65.0 <25.0

28.05.17 to 29.05.17 118.5 54.3 10.2 23.8 <0.1 <1.0 <65.0 <25.0

03.06.17 to 04.06.17 116.2 55.2 10.2 23.8 <0.1 <1.0 <65.0 <25.0

05.06.17 to 06.06.17 110.2 53.2 9.3 25.0 <0.1 <1.0 <65.0 <25.0

11.06.17 to 12.06.17 123.8 56.8 12.2 26.5 <0.1 <1.0 <65.0 <25.0

13.06.17 to 14.06.17 120.6 54.3 11.5 25.0 <0.1 <1.0 <65.0 <25.0

19.06.17 to 20.06.17 118.2 53.8 10.4 26.8 <0.1 <1.0 <65.0 <25.0

21.06.17 to 22.06.17 110.8 52.8 9.3 23.8 <0.1 <1.0 <65.0 <25.0







Location : Laudoha Village (AAQ-07) Lat/ Long : 23039’29”N / 87018’14”E



22.03.17 to 23.03.17 91.5 48.2 6.7 23.5 <0.1 <1.0 <65.0 <25.0

25.03.17 to 26.03.17 86.5 46.8 6.5 23.5 <0.1 <1.0 <65.0 <25.0

27.03.17 to 28.03.17 80.2 45.2 5.9 22.5 <0.1 <1.0 <65.0 <25.0

29.03.17 to 30.03.17 102.6 52.8 5.7 25.0 <0.1 <1.0 <65.0 <25.0

04.04.17 to 05.04.17 112.8 54.1 6.5 23.8 <0.1 <1.0 <65.0 <25.0

06.04.17 to 07.04.17 108.5 52.8 6.3 25.0 <0.1 <1.0 <65.0 <25.0

12.04.17 to 13.04.17 92.6 50.1 5.7 21.5 <0.1 <1.0 <65.0 <25.0

14.04.17 to 15.04.17 89.2 49.2 6.1 20.0 <0.1 <1.0 <65.0 <25.0

20.04.17 to 21.04.17 86.2 48.1 5.7 25.0 <0.1 <1.0 <65.0 <25.0

22.04.17 to 23.04.17 82.5 46.2 5.4 23.5 <0.1 <1.0 <65.0 <25.0





28.04.17 to 29.04.17 86.5 48.2 6.5 23.5 <0.1 <1.0 <65.0 <25.0

30.04.17 to 01.05.17 82.3 46.1 5.7 20.0 <0.1 <1.0 <65.0 <25.0

06.05.17 to 07.05.17 91.2 51.2 6.7 25.0 <0.1 <1.0 <65.0 <25.0

08.05.17 to 09.05.17 85.6 50.1 5.7 23.5 <0.1 <1.0 <65.0 <25.0

14.05.17 to 15.05.17 80.2 48.2 5.4 20.0 <0.1 <1.0 <65.0 <25.0

16.05.17 to 17.05.17 83.1 46.3 6.1 23.5 <0.1 <1.0 <65.0 <25.0

22.05.17 to 23.05.17 81.6 45.1 5.4 22.5 <0.1 <1.0 <65.0 <25.0

24.05.17 to 25.05.17 80.1 46.6 5.2 21.8 <0.1 <1.0 <65.0 <25.0

30.05.17 to 01.06.17 82.5 48.5 5.4 20.0 <0.1 <1.0 <65.0 <25.0

01.06.17 to 02.06.17 86.2 51.2 5.2 26.5 <0.1 <1.0 <65.0 <25.0

07.06.17 to 08.06.17 81.5 49.2 5.9 25.0 <0.1 <1.0 <65.0 <25.0

09.06.17 to 10.06.17 89.1 53.6 5.7 23.8 <0.1 <1.0 <65.0 <25.0

15.06.17 to 16.06.17 90.1 54.8 6.5 26.5 <0.1 <1.0 <65.0 <25.0

17.06.17 to 18.06.17 92.5 56.1 6.7 23.5 <0.1 <1.0 <65.0 <25.0







Location : DVC-DTPS Colony (AAQ-08) Lat/ Long : 23031’34”N / 87015’19”E



20.03.17 to 21.03.17 123.5 53.2 9.3 32.5 <0.1 <1.0 <65.0 <25.0

24.03.17 to 25.03.17 120.6 51.8 9.1 30.0 <0.1 <1.0 <65.0 <25.0

31.03.17 to 01.04.17 118.5 50.1 8.9 28.5 <0.1 <1.0 <65.0 <25.0

02.04.17 to 03.04.17 121.6 52.8 10.2 35.0 <0.1 <1.0 <65.0 <25.0

08.04.17 to 09.04.17 118.5 50.1 10.4 32.6 <0.1 <1.0 <65.0 <25.0

10.04.17 to 11.04.17 116.2 49.8 9.3 32.8 <0.1 <1.0 <65.0 <25.0

16.04.17 to 17.04.17 112.5 48.5 9.1 30.0 <0.1 <1.0 <65.0 <25.0

18.04.17 to 19.04.17 110.6 46.3 8.9 32.8 <0.1 <1.0 <65.0 <25.0

24.04.17 to 25.04.17 123.5 53.1 12.2 35.0 <0.1 <1.0 <65.0 <25.0

26.04.17 to 27.04.17 112.8 52.8 11.7 32.5 <0.1 <1.0 <65.0 <25.0





02.05.17 to 03.05.17 96.2 48.2 8.5 25.0 <0.1 <1.0 <65.0 <25.0

04.05.17 to 05.05.17 98.5 49.6 8.7 26.5 <0.1 <1.0 <65.0 <25.0

10.05.17 to 11.05.17 106.5 50.8 8.9 28.5 <0.1 <1.0 <65.0 <25.0

12.05.17 to 13.05.17 118.2 51.2 10.2 30.0 <0.1 <1.0 <65.0 <25.0

18.05.17 to 19.05.17 112.5 50.6 9.3 28.5 <0.1 <1.0 <65.0 <25.0

20.05.17 to 21.05.17 110.8 48.2 9.1 26.5 <0.1 <1.0 <65.0 <25.0

26.05.17 to 27.05.17 120.8 53.6 11.5 28.1 <0.1 <1.0 <65.0 <25.0

28.05.17 to 29.05.17 116.2 51.2 10.9 26.5 <0.1 <1.0 <65.0 <25.0

03.06.17 to 04.06.17 110.2 50.1 9.1 25.0 <0.1 <1.0 <65.0 <25.0

05.06.17 to 06.06.17 93.2 46.8 8.5 25.0 <0.1 <1.0 <65.0 <25.0

11.06.17 to 12.06.17 98.5 48.1 8.9 26.5 <0.1 <1.0 <65.0 <25.0

13.06.17 to 14.06.17 112.5 52.8 10.2 28.5 <0.1 <1.0 <65.0 <25.0

19.06.17 to 20.06.17 108.2 51.3 8.5 26.5 <0.1 <1.0 <65.0 <25.0

21.06.17 to 22.06.17 116.5 53.2 9.1 28.5 <0.1 <1.0 <65.0 <25.0







Location : Benachity Village (AAQ-09)

Lat/ Long : 23033’1”N / 87016’11”E



20.03.17 to 21.03.17 126.2 63.2 10.2 36.5 <0.1 <1.0 <65.0 <25.0

24.03.17 to 25.03.17 128.5 65.8 10.4 35.0 <0.1 <1.0 <65.0 <25.0

31.03.17 to 01.04.17 120.6 62.6 10.2 32.5 <0.1 <1.0 <65.0 <25.0

02.04.17 to 03.04.17 116.2 58.6 9.1 30.0 <0.1 <1.0 <65.0 <25.0

08.04.17 to 09.04.17 120.8 59.3 10.2 32.6 <0.1 <1.0 <65.0 <25.0

10.04.17 to 11.04.17 128.5 65.8 12.2 35.0 <0.1 <1.0 <65.0 <25.0

16.04.17 to 17.04.17 118.2 59.2 11.5 30.0 <0.1 <1.0 <65.0 <25.0

18.04.17 to 19.04.17 120.6 58.6 12.2 32.8 <0.1 <1.0 <65.0 <25.0

24.04.17 to 25.04.17 121.5 59.2 11.7 36.2 <0.1 <1.0 <65.0 <25.0

26.04.17 to 27.04.17 112.6 56.8 10.4 32.5 <0.1 <1.0 <65.0 <25.0





02.05.17 to 03.05.17 112.6 53.2 10.2 30.0 <0.1 <1.0 <65.0 <25.0

04.05.17 to 05.05.17 110.5 50.1 9.3 26.5 <0.1 <1.0 <65.0 <25.0

10.05.17 to 11.05.17 128.5 63.5 12.4 32.5 <0.1 <1.0 <65.0 <25.0

12.05.17 to 13.05.17 106.2 54.2 10.9 30.0 <0.1 <1.0 <65.0 <25.0

18.05.17 to 19.05.17 108.5 55.3 11.5 32.8 <0.1 <1.0 <65.0 <25.0

20.05.17 to 21.05.17 110.2 52.8 9.3 30.0 <0.1 <1.0 <65.0 <25.0

26.05.17 to 27.05.17 118.6 56.2 10.9 28.5 <0.1 <1.0 <65.0 <25.0

28.05.17 to 29.05.17 116.8 55.8 11.5 26.5 <0.1 <1.0 <65.0 <25.0

03.06.17 to 04.06.17 96.2 48.6 8.5 23.5 <0.1 <1.0 <65.0 <25.0

05.06.17 to 06.06.17 98.5 50.1 8.7 25.0 <0.1 <1.0 <65.0 <25.0

11.06.17 to 12.06.17 118.2 56.1 10.9 28.5 <0.1 <1.0 <65.0 <25.0

13.06.17 to 14.06.17 110.6 55.8 9.1 26.5 <0.1 <1.0 <65.0 <25.0

19.06.17 to 20.06.17 116.5 56.2 10.9 26.8 <0.1 <1.0 <65.0 <25.0

21.06.17 to 22.06.17 106.5 52.8 9.1 25.0 <0.1 <1.0 <65.0 <25.0


Monitored

by:

ENVIROCHECK Assigned by : ARCADIS India Pvt. Ltd.





Location : Kamalpur Village (AAQ-10) Lat/ Long : 23035’32”N / 87018’30”E



22.03.17 to 23.03.17 102.6 53.2 6.5 26.5 <0.1 <1.0 <65.0 <25.0

25.03.17 to 26.03.17 106.5 54.8 6.1 25.0 <0.1 <1.0 <65.0 <25.0

27.03.17 to 28.03.17 86.2 48.5 5.9 23.5 <0.1 <1.0 <65.0 <25.0

29.03.17 to 30.03.17 82.5 45.2 5.4 21.8 <0.1 <1.0 <65.0 <25.0

04.04.17 to 05.04.17 91.5 46.5 6.1 25.0 <0.1 <1.0 <65.0 <25.0

06.04.17 to 07.04.17 83.2 45.1 5.9 26.2 <0.1 <1.0 <65.0 <25.0

12.04.17 to 13.04.17 101.6 50.8 6.7 28.5 <0.1 <1.0 <65.0 <25.0

14.04.17 to 15.04.17 108.5 52.6 7.2 25.0 <0.1 <1.0 <65.0 <25.0

20.04.17 to 21.04.17 92.6 51.8 6.5 23.5 <0.1 <1.0 <65.0 <25.0

22.04.17 to 23.04.17 90.1 48.5 6.1 25.0 <0.1 <1.0 <65.0 <25.0





28.04.17 to 29.04.17 106.2 51.2 6.3 26.5 <0.1 <1.0 <65.0 <25.0

30.04.17 to 01.05.17 92.5 49.5 5.9 23.5 <0.1 <1.0 <65.0 <25.0

06.05.17 to 07.05.17 86.2 46.2 5.4 23.8 <0.1 <1.0 <65.0 <25.0

08.05.17 to 09.05.17 80.1 45.1 5.2 23.5 <0.1 <1.0 <65.0 <25.0

14.05.17 to 15.05.17 82.5 43.2 5.9 21.8 <0.1 <1.0 <65.0 <25.0

16.05.17 to 17.05.17 83.2 44.8 5.4 23.5 <0.1 <1.0 <65.0 <25.0

22.05.17 to 23.05.17 81.5 45.6 5.2 20.0 <0.1 <1.0 <65.0 <25.0

24.05.17 to 25.05.17 86.2 48.2 5.4 25.0 <0.1 <1.0 <65.0 <25.0

30.05.17 to 01.06.17 83.6 48.3 5.9 23.8 <0.1 <1.0 <65.0 <25.0

01.06.17 to 02.06.17 81.6 42.6 5.2 21.5 <0.1 <1.0 <65.0 <25.0

07.06.17 to 08.06.17 86.2 48.5 6.1 25.0 <0.1 <1.0 <65.0 <25.0

09.06.17 to 10.06.17 90.1 51.2 6.5 26.5 <0.1 <1.0 <65.0 <25.0

15.06.17 to 16.06.17 86.1 46.8 6.1 25.0 <0.1 <1.0 <65.0 <25.0

17.06.17 to 18.06.17 92.8 51.2 6.3 23.5 <0.1 <1.0 <65.0 <25.0



AMBIENT AIR QUALITY MONITORING RESULTS FOR APRIL – MAY 2015

Sampling Date PM10

(µg/m³) PM2.5 (µg/m³)

Sulphur Dioxide (µg/m³)

Nitrogen Dioxide (µg/m³)

Hydrocarbon (methane)

(ppm)

Volatile Organic

Compound (µg/m³)

Mahisampura Village –AQ 1

17.04.15 85 34 15 27 <5.0 <5.0 18.04.15 87 15 28

23.04.15 96 39 18 32 <5.0 <5.0 24.04.15 90 16 29

29.04.15 92 37 16 30 <5.0 <5.0 30.04.15 82 14 25

5.05.15 78 32 12 23 <5.0 <5.0

06.05.15 76 11 21 11.05.15 75 34 13 20 <5.0 <5.0

12.05.15 85 14 21 18.05.15 88 33 16 18 <5.0 <5.0

19.05.15 89 18 19 25.05.15 84 36 14 20 <5.0 <5.0

26.05.15 87 13 21

30.05.15 89 38 13 20 <5.0 <5.0 Max 96 39 18 32 <5.0 <5.0

Min 75 32 11 18 <5.0 <5.0

Mean 85.5 35.4 14.5 19.5 <5.0 <5.0

98% 94.9 38.9 18.0 31.4 <5.0 <5.0

STD 5.85 2.50 2.03 4.52 <5.0 <5.0

Kelejora Village-AQ2

17/04/15 82 34 14 13 <5.0 <5.0



Sampling Date PM10

(µg/m³) PM2.5 (µg/m³)




(ppm)

Volatile Organic

Compound (µg/m³)

18/04/15 87 15 17 22/04/15 78 32 12 18 <5.0 <5.0

23/04/15 75 11 20 28/04/15 82 35 14 15 <5.0 <5.0

30/4/15 76 11 21 5/05/15 68 28 14 24 <5.0 <5.0

6/5/15 65 12 16

08/05/15 77 30 13 15 <5.0 <5.0 9/5/15 79 14 16

16/05/15 76 32 15 12 <5.0 <5.0 17/5/15 70 13 13

22/05/15 84 33 12 14 <5.0 <5.0 28/05/15 74 13 17

29/5/15 74 34 11 18 <5.0 <5.0

Max 87 35 15 24 <5.0 <5.0

Min 65 30 11 12 <5.0 <5.0

Mean 76.5 32.3 12.9 16.6 <5.0 <5.0

98% 86.2 34.9 15.0 23.2 <5.0 <5.0

STD 6.0 2.3 1.4 3.3 <5.0 <5.0

Patharchur Village-AQ3 16/4/15 132 64 20 25 <5.0 <5.0

17/04/15 146 23 20

21/4/15 160 72 26 30 <5.0 <5.0 22/4/15 148 24 25

27/4/15 154 67 25 18 <5.0 <5.0 28/4/15 140 21 22

5/5/15 128 53 18 19 <5.0 <5.0 6/5/15 120 16 17



Sampling Date PM10

(µg/m³) PM2.5 (µg/m³)




(ppm)

Volatile Organic

Compound (µg/m³)

12/5/15 132 60 18 18 <5.0 <5.0 13/5/15 130 22 24

20/5/15 132 63 24 18 <5.0 <5.0 21/5/15 150 24 26

27/5/15 152 65 22 21 <5.0 <5.0 28/5/15 155 23 25

Max 160 72 26 30 <5.0 <5.0

Min 120 53 16 17 <5.0 <5.0

Mean 141.9 63.8 21.6 21.8 <5.0 <5.0

98% 158.7 71.4 25.74 28.96 <5.0 <5.0

STD 12.3 5.9 2.9 3.9 <5.0 <5.0

Bansia Village-AQ4

17/4/15 65 31 12 17 <5.0 <5.0 18/4/15 68 14 25

23/4/15 76 35 16 15 <5.0 <5.0

24/4/15 72 15 25 28/4/15 84 40 18 28 <5.0 <5.0

29/4/15 78 16 19 5/5/15 75 36 15 17 <5.0 <5.0

6/5/15 66 11 21 10/5/15 65 34 12 26 <5.0 <5.0

11/5/15 78 14 25

18/5/15 62 36 15 24 <5.0 <5.0 19/5/15 75 18 27

25/5/15 71 38 12 23 <5.0 <5.0 26/5/15 74 14 25

30/5/15 80 34 18 27 <5.0 <5.0



Sampling Date PM10

(µg/m³) PM2.5 (µg/m³)




(ppm)

Volatile Organic

Compound (µg/m³)

Max 84 40 18 28 <5.0 <5.0

Min 62 31 11 15 <5.0 <5.0

Mean 72.6 35.5 14.7 22.9 <5.0 <5.0

98% 82.9 39.7 18.0 27.7 <5.0 <5.0

STD 6.3 2.7 2.3 4.1 <5.0 <5.0

Bansgara Village-AQ5 15/4/15 70 36 16 23 <5.0 <5.0

16/4/15 66 13 24

20/4/15 75 40 16 21 <5.0 <5.0 21/4/15 78 18 19

27/4/15 82 42 19 25 <5.0 <5.0 28/4/15 72 16 25

4/5/15 68 34 14 18 <5.0 <5.0 5/5/15 62 12 23

10/5/15 68 38 16 24 <5.0 <5.0

11/5/15 74 17 22 18/5/15 70 38 18 18 <5.0 <5.0

19/5/15 73 12 19 26/5/15 66 41 11 20 <5.0 <5.0

27/5/15 71 15 21 30/5/15 80 35 17 22 <5.0 <5.0

Max 82 42 19 25 <5.0 <5.0

Min 62 34 11 18 <5.0 <5.0

Mean 71.7 38.0 15.3 21.6 <5.0 <5.0

98% 81.4 41.9 18.7 25.0 <5.0 <5.0

STD 5.5 2.9 2.4 2.4 <5.0 <5.0

Pahari Village-AQ6

15/4/15 62 28 13 20 <5.0 <5.0



Sampling Date PM10

(µg/m³) PM2.5 (µg/m³)




(ppm)

Volatile Organic

Compound (µg/m³)

16/4/15 60 12 18 20/4/15 67 32 15 22 <5.0 <5.0

21/4/15 70 16 21 27/4/15 65 30 14 15 <5.0 <5.0

28/4/15 72 17 21 4/5/15 64 32 14 20 <5.0 <5.0

5/5/15 60 11 21

10/5/15 67 30 14 20 <5.0 <5.0 11/5/15 60 15 17

18/5/15 58 28 16 18 <5.0 <5.0 19/5/15 68 14 21

26/5/15 70 30 11 16 <5.0 <5.0 27/5/15 72 13 15

30/5/15 65 30 15 18 <5.0 <5.0

Max 72 32 17 22 <5.0 <5.0

Min 58 28 11 15 <5.0 <5.0

Mean 65.3 30.0 14.0 18.9 <5.0 <5.0

98% 72.0 32.0 16.7 21.7 <5.0 <5.0

STD 4.6 1.5 1.8 2.3 <5.0 <5.0

Arati Village-AQ7 17.04.15 82 37 14 25 <5.0 <5.0

18.04.15 86 15 27

23.04.15 78 32 12 21 <5.0 <5.0 24.04.15 90 16 25

29.04.15 94 40 17 24 <5.0 <5.0 30.04.15 80 14 19

5.05.15 76 30 12 21 <5.0 <5.0 06.05.15 72 10 24



Sampling Date PM10

(µg/m³) PM2.5 (µg/m³)




(ppm)

Volatile Organic

Compound (µg/m³)

11.05.15 78 38 11 22 <5.0 <5.0 12.05.15 78 12 25

18.05.15 80 35 15 26 <5.0 <5.0 19.05.15 85 17 26

25.05.15 85 33 16 25 <5.0 <5.0 26.05.15 83 15 20

30.05.15 82 35 12 23 <5.0 <5.0

Max 94 40 17 27 <5.0 <5.0

Min 72 30 10 19 <5.0 <5.0

Mean 81.9 35.0 13.9 23.5 <5.0 <5.0

98% 92.9 39.7 17.0 26.7 <5.0 <5.0

STD 5.6 3.3 2.2 2.4 <5.0 <5.0

Ichhapur Village-AQ8 13/04/15 88 40 15 23 <5.0 <5.0

14/04/15 92 18 20

19/04/15 85 38 14 15 <5.0 <5.0 20/04/15 96 19 27

25/04/15 90 42 17 21 <5.0 <5.0 26/04/15 80 13 29

01/05/15 75 34 11 19 <5.0 <5.0 02/05/15 82 14 24

10/05/15 88 38 13 29 <5.0 <5.0

11/5/15 86 16 25 18/5/15 80 36 14 27 <5.0 <5.0

19/5/15 86 12 26 27/5/15 88 40 16 20 <5.0 <5.0

28/5/15 84 18 23 Max 96 42 19 29 <5.0 <5.0



Sampling Date PM10

(µg/m³) PM2.5 (µg/m³)




(ppm)

Volatile Organic

Compound (µg/m³)

Min 75 34 11 15 <5.0 <5.0

Mean 85.7 38.5 15.1 23.5 <5.0 <5.0

98% 95.0 41.8 18.7 29.0 <5.0 <5.0

STD 5.4 2.7 2.4 4.1 <5.0 <5.0

Andal Village –AQ9

15/4/15 128 59 19 30 <5.0 <5.0 16/4/15 136 18 38

20/4/15 112 43 17 32 <5.0 <5.0

21/4/15 108 22 29 27/4/15 120 55 16 32 <5.0 <5.0

28/4/15 124 24 40 4/5/15 132 50 17 35 <5.0 <5.0

5/5/15 116 12 33 10/5/15 128 54 20 34 <5.0 <5.0

11/5/15 117 20 32

18/5/15 130 52 24 28 <5.0 <5.0 19/5/15 132 20 29

26/5/15 126 48 17 32 <5.0 <5.0 27/5/15 120 18 30

Max 136 59 24 40 <5.0 <5.0

Min 108 43 12 28 <5.0 <5.0

Mean 123.4 51.4 18.7 32.8 <5.0 <5.0

98% 135.0 58.5 24.0 39.5

STD 8.3 5.2 3.2 3.4

Srirampur Village-AQ10

17.04.15 145 64.5 18 34 <5.0 <5.0 18.04.15 120 18 27

23.04.15 132 56 17 32 <5.0 <5.0



Sampling Date PM10

(µg/m³) PM2.5 (µg/m³)




(ppm)

Volatile Organic

Compound (µg/m³)

24.04.15 114 20 24 29.04.15 125 50 16 36 <5.0 <5.0

30.04.15 140 24 26 5.05.15 136 62 17 30 <5.0 <5.0

06.05.15 108 12 29 11.05.15 126 58 20 27 <5.0 <5.0

12.05.15 130 21 32

18.05.15 132 58 24 30 <5.0 <5.0 19.05.15 127 22 35

25.05.15 132 56 17 26 <5.0 <5.0 26.05.15 127 18 24

30.05.15 123 60 17 32 <5.0 <5.0 Max 145 64.5 24 36 <5.0 <5.0

Min 108 50 12 24 <5.0 <5.0

Mean 127.8 58.1 18.7 29.6 <5.0 <5.0 98% 143.6 64.2 24.0 35.7 <5.0 <5.0

STD 9.4 4.4 3.2 3.9 <5.0 <5.0



Mean values

PM10

(µg/m3)

PM2.5

(µg/m3)

SO2

(µg/m3)

NOx

(µg/m3)

HC

(ppm)

VOC as

BTX(µg/m3)

AAQ1 85.8 35.5 14.6 26.9 <5 <5

AAQ2 70.1 32.3 12.9 24 <5 <5

AAQ3 141 64 21.6 35.3 <5 <5

AAQ4 73 35.5 14.6 25.6 <5 <5

AAQ5 71.6 38 15.5 27.1 <5 <5

AAQ6 65 30.5 14 25.4 <5 <5

AAQ7 82.25 34.75 13.75 24.875 <5 <5

AAQ8 86 38.5 15.1 26.2 <5 <5

AAQ9 127.5 58.1 15.9 28.2 <5 <5

AAQ10 122 51.75 16.9 29.9 <5 <5

CPCB limit

(µg/m3) 24 hrs. 100 60 80 80 :

* Detectable Limit for VOC ( as BTX ) is 5 µg/m3

*Detectable Limit for Methane hydrocarbon (HC): 5 ppm



Annexure XIII: Soil Monitoring Qaulity Locations

PARAMETERS

tested

S-1

(Dubehuria

Village

S-2

(Banguri

Village)

S-3 (Amrai

Village)

S-4

(Banshia

Village)

S-5

(Kelejora

Village)

S-6

(Patharchur

Village)

pH(40% Slurry ) 6.36 6.25 6.63 4.77 5.65 5.25

Electrical

Conductivity(50% Slurry

),µs/cm 185.2 390 237 110.9 117 104.5

Sand,%w/w 22 20 24 46 19 20

Silt,%w/w 46 32 30 38 45 30

Clay,%w/w 32 48 46 16 36 50

Texture Clay Loam Clay loam Clay loam

Sandy

Loam Clay Loam Clay loam

Sodium Absorption ratio 0.8 1.57 1.48 1.26 1.02 0.82

Sodium, mg/kg 23.7 81.8 57.5 23.8 19 19.2

Available Potassium,

mg/kg 49.4 180.4 74.9 29.8 160 60

Porosity, %w/w 44 56 52 37.5 46 54

Lead,mg/kg 12.8 12.4 14.4 3.5 18.1 20.5

Iron , % 1.52 2.56 1.9 1.21 1.9 4.53

Copper, mg/kg 19.1 25.5 25.2 12.1 21.6 33.6

Zinc, mg/kg 23.9 31.9 27.7 8.8 38.9 43.2

Manganese,% 117.8 332.9 287.4 63 384.7 1731.3

Infiltration Rate,mm/hour 16 8.7 9.4 24.3 16.4 9

Bulk Density,gm/cc 1.5 1.4 1.4 1.6 1.43 1.4



Organic matter,%w/w 0.98 1.68 1.13 0.76 0.91 1.33

Organic Carbon,%w/w 0.57 0.98 0.66 0.44 0.53 0.77

Available

Nitrogen,mg/Kg 514 457.5 508.5 222.8 499 322

Available

Phosphorous,mg/Kg 34.3 30.2 17 16 52.7 19.6

Moisture Content,%w/w 7.06 5.3 10.9 7.64 10.3 6.5

Chloride, mg/kg 28.5 66.8 38.2 28.7 28.5 35.8

Sulphate, mg/kg 4.5 41.8 10 10.5 16 9.5

Magnesium, mg/kg 35 37.4 52.7 10.6 5.3 18.4

Boron,mg/Kg 9.7 16.8 13.3 6.8 12.8 33.6

Total Alkalinity,meq/kg 19.8 40.00 39.8 40 40 20.6

Calcium [as Ca], mg/kg 8.7 140.3 26.3 8.8 17.5 8

Acidity [as CaCO3],

mg/kg <20.0 60 39.8 79.6 40 80

Sodium [as NaCl], mg/kg 60.2 207.8 146 60.5 48.5 48.8

Specific Gravity, gm/cc 1.52 1.46 1.44 1.62 1.46 1.42

Sodium Carbonate, mg/kg 54.6 188.5 132.5 54.9 44 44.2



ANNEXURE XIV: SURFACE WATER QUALITY MONITORING RESULTS

S.N

Water Quality

Parameter SW1 SW2 SW3 SW4 SW5

1 Colour, Hazen units <1.0 <1.0 <1.0 <1.0 <1.0

2 Turbidity in (N.T.U) <1.0 <1.0 <1.0 <1.0 <1.0

3 pH, at 25°C 8.1 8 7.8 7.22 7.45

4 TDS, mg/l 224 244 238 237 783

5 Total Hardness 114 114.4 119 123.2 282

6 Total Alkalinity 91 99 99 103.3 380

7 Calcium 70.4 79.8 70.4 84.8 172.2

8 Chloride ,mg/l 13.4 15.3 15.3 15.3 111.2

9 Dissolved Oxygen 5.2 5.5 5.8 4 4.5

10 BOD 2.8 2.5 3 3 3

11 COD 22 18 18 26 20

12 Fluoride mg/l 1.2 1.1 1 1 1

13 Magnesium, mg/l 43.6 34.6 48.6 38.4 109.8

14 Phenolic compound,, mg/l <0.001 <0.001 <0.001 <0.001 <0.001

15 Nitrate, mg/l <1.0 1.3 1.3 <1.0 2.5

16 Sulphate, mg/l 22.3 24.3 23 17.3 29.2

17 Odour Agreeable Agreeable Agreeable Agreeable Agreeable

18 Cyanide, mg/l <0.05 <0.05 <0.05 <0.05 <0.05

19

Hexavalent Chromium (as

cr+6), mg/l <0.03 <0.03 <0.03 <0.03 <0.03

20 Iron ,mg/l <0.1 0.3 0.12 <1.0 <1.0

21 Copper, mg/l <0.05 <0.05 <0.05 <0.05 <0.05

22 Zinc , mg/l <0.02 <0.02 <0.02 <0.02 <0.02

23 Cadmium, mg/l <0.003 <0.003 <0.003 <0.003 <0.003



24 Lead , mg/l <0.005 <0.005 <0.005 <0.005 <0.005

25 Mercury , mg/l <0.001 <0.001 <0.001 <0.001 <0.001

26 Boron, mg/l <0.1 <0.1 <0.1 <0.1 <0.1

27 Arsenic, mg/l <0.003 <0.003 <0.003 <0.003 <0.003

28 Aluminum, mg/l <0.05 0.12 0.07 0.06 <0.02

29 Manganese , mg/l <0.05 <0.05 <0.05 <0.05 0.32

30 Selenium, mg/l <0.005 <0.005 <0.005 <0.005 <0.005

31 Total Coliform (MPN/100ml) 80 23 50 <2.0 240

32 Fecal Coliform (MPN/100ml) 30 13 <2.0 <2.0 13


SENES/K-20271Oct 2016 118 ONGC

ANNEXURE XV: GROUND WATER QUALITY MONITORING RESULTS

S.N Water Quality Parameter Protocol GW 1

(Shakradanga

Village )

GW 2 (Dubehuria

Village )

GW 3 (

Icchapur

Village)

GW4

(Banshia

Village)

GW 5 (

Amrai

Village )

Acceptable

Limit

Permissible

Limit

1 Colour, Hazen units IS 3025 pt-04 <1.0 <1.0 <1.0 <1.0 <1.0 5 15

2 Turbidity in (N.T.U) IS 3025 pt-10 <1.0 <1.0 <1.0 <1.0 <1.0 1 5

3 pH, at 25°C IS 3025 pt-11 7.39 7.8 7.31 7.33 6.58 6.5-8.5

No

relaxation

4 TDS, mg/l IS 3025 pt-16 1293 799 638 394 108 500 2000

5

Total Hardness (as

CaCO3), mg/l IS 3025 pt-21 559 211 321 167.2 35.2 200 600

6

Total Alkalinity (as

CaCO3),mg/l IS 3025 pt-23 409 355 74.3 219 8.3 200 600

7 Calcium (as Ca), mg/l IS 3025 pt-38 129 54.6 72.3 39 11 75 200

8 Chloride (as Cl), mg/l IS 3025 pt-32 305 119 167 15.3 25 250 1000

9 Fluoride (as F), mg/l

APHA-4500-F-

D 1 0.63 0.5 0.82 0.4 1 1.5

10 Magnesium (as Mg),mg/l IS 3025 pt-46 58 18 34 17 2.1 30 100

11

Phenolic compound (as

C6H5OH), mg/l IS 3025 pt-43 <0.001 <0.001 <0.001 <0.001 <0.001 0.001 0.002

12 Nitrate (as NO3), mg/l

APHA-4500-B-

NO3 2.5 1.2 <1.0 <1.0 <1.0 45

No

relaxation

13 Sulphate (as SO4), mg/l IS 3025 pt-24 104 46 83 3.5 29 200 400

14 Odour IS 3025 pt-05 Agreeable Agreeable Agreeable Agreeable Agreeable Agreeable Agreeable

15 Cyanide (as CN), mg/l IS 3025 pt-27 <0.05 <0.05 <0.05 <0.05 <0.05 0.05

No

relaxation

16

Hexavalent Chromium (as

cr+6), mg/l IS 3025 pt-52 <0.03 <0.03 <0.03 <0.03 <0.03 0.05

No

relaxation

17 Iron (as Fe) ,mg/l IS 3025 pt-2 0.35 <0.1 1.33 0.2 1.07 0.3

No

relaxation

18 Copper (as cu), mg/l IS 3025 pt-2 <0.05 <0.05 <0.05 <0.05 <0.05 0.05 15

19 Zinc (as Zn), mg/l IS 3025 pt-2 0.14 0.99 0.07 <0.02 <0.02 5 15

20 Cadmium (as Cd), mg/l IS 3025 pt-2 <0.003 <0.003 <0.003 <0.003 <0.003 0.003

No

relaxation



21 Lead (as Pb), mg/l IS 3025 pt-2 <0.01 <0.01 <0.01 <0.01 <0.01 0.01

No

relaxation

22 Mercury (as Hg), mg/l IS 3025 pt-2 <0.001 <0.001 <0.001 <0.001 <0.001 0.001

No

relaxation

23 Boron (as B), mg/l IS 3025 pt-2 <0.1 <0.1 <0.1 <0.1 <0.1 0.5 1

24 Arsenic (as As), mg/l IS 3025 pt-2 <0.005 <0.005 <0.005 <0.005 <0.005 0.01 0.05

25 Aluminum (as Al), mg/l IS 3025 pt-2 <0.02 <0.02 <0.02 <0.02 0.04 0.1 0.3

26 Manganese (as Mn), mg/l IS 3025 pt-2 0.06 <0.05 <0.05 <0.05 0.11 0.1 0.3

27 Selenium (as Se), mg/l IS 3025 pt-2 <0.005

<0.005 <0.005 <0.005 <0.005 0.01

No

relaxation

28

Total Coliform

(MPN/100ml) IS:1622 :1982 <2.0 <2.0 <2.0 <2.0 <2.0 ND

No

relaxation

29

Fecal Coliform

(MPN/100ml) IS:1622 :1982 <2.0 <2.0 <2.0 <2.0 <2.0 ND

No

relaxation

N.D = Not Detected



Annexure EIA study for development of CBM Activities in Raniganj CBM

SENES/K-20271/Oct 2016 121 ONGC

ANNEXURE XVI: TRAFFIC MONNITORING RESULTS

Two Wheeler AVG. Three Wheeler AVG. LMV AVG. HMV AVG. Others AVG.

T1 T2 T3 T4 T1 T2 T3 T4 T1 T2 T3 T4 T1 T2 T3 T4 T1 T2 T3 T4

9:00AM --

12:00 PM 157 130 90 102 120 83 21 16 26 37 195 200 32 152 145 192 181 20 121 129 6 17 12

1:00 PM --

4:00 PM 160 86 97 95 110 87 11 16 11 31 170 192 32 147 135 177 173 25 116 123 5 11 8

5:00 PM --

8:00 PM 96 19 79 84 70 74 6 11 17 27 150 128 31 107 104 162 156 23 96 109 3 13 8

Avg. 138 78 89 94 100 81 13 14 18 32 172 173 32 135 128 177 170 23 111 120 5 14 9

9:00 PM --

12:00 PM 37 19 13 11 20 17 6 0 7 8 124 128 17 83 88 139 156 26 60 95 0 1 1

1:00AM --

4:00 AM 18 29 14 28 22 13 5 1 13 8 55 125 12 47 60 90 158 10 64 81 1 3 2

5:00 AM--

8:00 AM 135 139 62 77 103 78 29 8 19 34 169 182 26 111 122 164 179 14 90 112 1 4 3

Avg. 63 62 30 39 49 36 13 3 13 16 116 145 18 80 90 131 164 17 71 96 1 3 2



ANNEXURE XVII: LIST OF VASCULAR PLANTS

S.N Scientific name Family Common name/Local

name

Habit Occurrence

1. Acacia auriculoformis Leguminosae Phuljhari Tree Common

2. Aegle marmelos Rutaceae Bel Tree Common

3. Albizia lebbek Mimosaceae Sirish Tree Frequent

4. Ailanthus excelsa Simaroubaceae Mahal Tree Rare

5. Alstonia scolaris Apocynaceae Chatim Tree Rare

6. Annona squamosa Annonaceae Ata Tree Common

7. Anogeissus latifolia Combreataceae Dhawra Tree Rare

8. Anthocephalus cadamba Rubiaceae Kadamba Tree Rare

9. Artocarpus heterophyllus Moraceae Kathal Tree Common

10. Azadirachta indica Meliaceae Neem Tree Common

11. Madhuca latifolia Sapotaceae Mahua Tree Frequent

12. Bambusa arundinacea Poaceae Bansh Grass Common

13. Bombax ceiba Bombacaceae Shimul Tree Frequent

14. Borassus flabelifer Arecaceae Tal Tree Common

15. Butea monosperma Papilonaceae Palash Tree Common

16. Cassia fistula Caesalpiniaceae Bandar lath Tree Frequent

17. Dalbergia sisso Fabaceae Sisso Tree Common

18. Dillenia indica Dilleniaceae Chalta Tree Rare

19. Ficus benghalensis Moraceae Bata Tree Common

20. Ficus religiosa Moraceae Ashathwa Tree Common

21. Holarrhena antidysenterica Apocynaceae Kurchi Tree Rare

22. Ficus hispida Moraceae Dumur Tree Rare

23. Leucaena leucocephala Fabaceae Subabul Tree Common

24. Melia azedarach Meliaceae Mahanim Tree Rare

25. Moringa oleifera Moringaceae Sajana Tree Frequent

26. Oroxylum indicum Bignoniaceae Sona patti Tree Rare

27. Phoenix sylvestris Arecaceae Khajur Tree Common

28. Polyanthia longifolia Annonaceae Debdaru Tree Common

29. Pongamia pinnata Papilionaceae Karanja Tree Common

30. Samanea saman Fabaceae Raintree Tree Frequent

31. Syzygium cumini Myrtaceae Kalo jam Tree Common

32. Ziziphus mauritiana Rhamnaceae Kul Medium

Tree

Common

33. Acalypha hispida Euphorbiaceae Acalypha Shrub Frequent

34. Adhatoda vasica Acanthaceae Vasaka Shrub Frequent

35. Calotropis procera Asclepiadaceae Akanda Shrub Common

36. Cassia alata Caesalpiniaceae Ring worm

senna

Shrub Common

37. Cassia tora Caesalpiniaceae Cassia shrub common

38. Clerodendron inerme Verbinaceae Batraj Shrub Frequent

39. Crotalaria juncea Papilionaceae Shon pat shrub common

40. Duranta spinosa Verbinaceae Golden dew

drop shrub

Rare

41. Datura metel Solanaceae Dhutra Shrub Common

42. Ipomoea batata Convulvulaceae Besharam Shrub Common

43. Jatropha curcas Euphorbiaceae Bag bherenda Shrub Rare

44. Lantana camara Verbenaceae Chotra Shrub Frequent

45. Ricinus commnunis Euphorbiaceae Bheranda Shrub Rare

46. Solanum indicum Solanaceae Bon begun Shrub Rare

47. Solanum surattense Solanaceae Kantakari Shrub Rare



48. Vitex negundo Verbenaceae Nisinda Shrub Rare

49. Opuntia dillenii Cactaceae Phani manasha Frequent

50.

51. Achyranthes aspera Amaranthaceae Apang Herb Common

52. Acalypha indica Euphorbiaceae muktajhuri Herb Common

53. Abutilon indicum Malvaceae Patari Herb Common

54. Ageratum conizoides Compositae Uchunti Herb Common

55. Amaranthus indica Amaranthaceae kata natya Herb Common

56. Andrographis paniculata Acanthaceae Kalmegh Herb Frequent

57. Argemone mexicana Papaveraceae Siyal kanta Herb Frequent

58. Blumea lacera Compositae Kukur sunga Herb Frequent

59. Celosia cristata Amaranthaceae Morog ghuti Herb Frequent

60. Centella asiatica Apiaceae Thankuni Herb Frequent

61. Chenopodium album Chenopodiaceae Bbethu sag Herb Common

62. Cleome sps Capparidaceae - Herb Frequent

63. Costus speciosus Zingiberaceae Keu Herb Rare

64. Croton bonplandianum Euphorbiaceae Croton Herb Frequent

65. Desmodium trifforum Papilionaceae Kudaliya Herb Rare

66. Eclipta alba Asteraceae Bhringaraja Herb Common

67. Euphorbia hirta Euphorbiaceca --- Herb Common

68. Eupatorium odoratum Compositae --- Herb Rare

69. Heliotropium indicum Boraginaceae Hatisudha Herb Rare

70. Hyptis suaveolens Labiatae Bilati tulshi Herb Common

71. Chloris barbata Poaceae - Grass Common

72. Chrysopogon aciculatus Poaceae Chorkata Grass Frequent

73. Cynodon dactylon Poaceae Durba grass Grass Common

74. Saccharum spontaneum Poaceae Kush ghass Grass Frequent

75. Cyperus kyllingia Cyperaceae Nirbishi Grass Common

76. Echinochloa colonum Poaceae Shama Grass Common



ANNEXURE XVIII: STAKEHOLDER CONSULTATIONS - MINUTES OF MEETING

A. Consultations with the Community at Ichapur Gram Panchayat, Durgapur- Fatehpur Block, Durgapur Subdivision

Proceedings of the Meeting with the Community at ‘Arti’ Village

Venue: Satyapir Asthana Masjid, Arti Village Date: 20.04.2015

Village Profile: (As told by the Community Members)

No. of Households: 600

Population: Approx. 4000 +/_

Religion: Muslim

Major Occupation: Agriculture (Single Harvest)

Additional Occupation: Daily Wage Labourers as Masons

Education Level: Highest education level found up to 12th Standard.

Educational Institute: Urdu Medium Primary Madrasah & Bengali Medium Govt. Free Primary

School

Nearest Higher Education

School / College etc

15 Kms away at Durgapur Town

ICDS Centre 2 (within the village)

Nearest Health Centre: 2 Km away (No Health Centre within the village)

Nearest Hospital: 15 Kms away at Durgapur Town

Major Ailments: Diarrhea, Asthma & Common Cold

Water Resources: Hand Pumps (15 Nos.) and a few dug wells (Water Crisis often occurred

during dry seasons and becomes a matter of concern for the Panchyat even.)

Electricity: Most of the Houses have electric connections

Cooking Fuel resources: Cow-dung Cakes, Coal & Wood

Participants:

From Community: From the Consultants:

i) Akib Mondal, Panchyat Member Ms. Jyoti Das

ii) Taiba Bibi, Panchayat Member

iii) 15 Persons representing the Masjid Committee (Didn’t mention their names)



During the discussion it was revealed that there is no apprehension or complain regarding the boring

work done by ONGC here, which had started since 2011. Though, at present there is no boring work

going on. But, there are issues among the community regarding the development promises made by

ONGC. The “Arti’ village is only Muslim infested. And the entire village is some way or other linked

with and influenced by the Masjid Committee there. The Masjid Committee has a strong influence

among the community in general. Most of the community members are very much hopeful that ONGC

will keep their promise regarding the development activities of the area and they will do it in

collaboration with the Masjid Committee so that the community’s needs and necessities get clearly

addressed.

Consultation at Satyapir Asthana Masjid, Arti Village



B. Consultations with the Community at Hetedoba Gram Panchayat, Durgapur- Fatehpur

Block, Durgapur Subdivision

Proceedings of the Meeting with the Community at ‘Bansia’ Village

Venue: Bansia Yuvak Sangha (Club), Bansia Village,

The village is located within the Ukhra Forest Area.

Date: 21.04.2015

Village Profile: (As told by the Community Members including the Club Members)



Religion: Majorly Hindu

Caste/ Tribe: Scheduled Caste -50% & Tribals (80 Families)

Major Occupation: Cultivation (Single Harvest)

Additional Occupation: Daily Wage Labourers as Masons and different other occupations

as they gets

Distance from nearest Main

Road (though semi kucha): 5 Kms.


Educational Institute: 1 Bengali Medium Govt. Free Upper- Primary School & 1 Bengali

Medium Govt. Free Primary School

Nearest Higher Education School /

College etc

20 Kms away at Durgapur Town



* But, Health Outreach Activities takes place once in a month

within the village by Govt. Health Dept.

Nearest Hospital: 20 Kms away at Durgapur Town

Major Ailments: Diarrhea, Asthma & Common Cold

Water Resources: Hand Pumps (18 Nos.) and 10 natural ponds (Water Crisis all

through the year except during monsoon – The Ponds only gets fill.)


Cooking Fuel resources: Cow-dung Cakes, Coal & Fire woods collected from the forest

Participants:


i. Beli Tulu, Panchyat Member Ms. Jyoti Das

ii. 17 Persons form the Community and also a few from the Club



Bansia Yuvak Sangha (Club), Bansia Village Interaction with Women at Bans ia Vi l lage, Ukhra Forest Area.

It was revealed from the consultation that most of the villagers and forest dwellers are unaware about the ONGC activities and its impact on environment of the area. The area is economically backward. There is no alternative livelihood opportunity for them except Monsoon Cultivation and Forest wood collection. Though, most of the households posses Hen, Cow or Ox and Goat as pets. Almost all the households have the milk resources for them. While queried about deforestation and firewood collection the Community Members stated that they conventionally collect dry broken wood from the forest and also plant saplings as it is customary and mandatory for their community. The villagers, who are basically forest dwellers, have a serious demand about Road and Transportation

Improvement. They seriously feel that only the conveyance improvement can be contributing factor to their livelihood improvement as it will connect them to the mainstream areas of the nearer industrial belt.

C. Consultations with the Community at Dhomani Gram Panchayat, Barabani Block,

Durgapur Subdivision



Proceedings of the Meeting with the Community at ‘Dhomani’ Village

Venue: Dhomani Village Date: 24.04.2015




Religion: Both Hindu & Muslim

Caste/ Tribe: A section of the vil lagers are Scheduled Caste. There is no Scheduled

Tribe.


Additional Occupation: Daily Wage Labourers as Masons and different other occupations as they

gets

Distance from nearest Main Road

(though the Main Road is semi kucha): 5 Kms.

Education Level: Highest education level found is Graduation completed.

Educational Institute: 2 Bengali medium Govt. Free Primary School & 1 Bengali medium High

School (used both as Girls’ and Boys’ respectively in the morning and day

time.)


College etc

5 Kms. away at Domahani Town

ICDS Centre 3 (within the vil lage)

Nearest Health Centre: 8 Km away (No Health Centre within the vil lage

Nearest Hospital: 8 Kms away at Kelejora PHC & 25 Kms away at Asansol

Major Ailments: Asthma & Common Cold

Water Resources: Hand Pumps (30 Nos.) and 3 natural ponds (Water Crisis all through the

year except during monsoon – The Ponds only gets fi l l .) Purified Supply

Water from Mython Dam once in a day for 1 Hour only.


Cooking Fuel resources: Cow-dung Cakes, Coal & LPG 15%

Participants:


i) Sk. Mansur, Panchyat Member Ms. Jyoti Das

ii) 10 Persons from the Community and a School Teacher

During the discussion it was revealed that there is no apprehension or complain regarding the boring

work done by ONGC here, which had started since 2013. Though, at present there is no boring work

going on.



But, there are issues among the community regarding the boring activities. Many of the agrarian lands

were bored/ drilled and Pipes and Marking Stones were entrenched without any knowledge of the land

owners or any of the villagers. Later, it was known that ONGC had made these activities for Monitoring

of Gas presence. This has made the villagers a little agitated. More, the dividers and banks of the

Agrarian Fields got broken, shaggy and bumpy.

Publ ic Consultation at Dhomani Village, Barabani Block Interaction with Women at Dhomani Vi l lage.

D. Consultations with the Community at Banowara Gram Panchayat, Baraboni Block, Durgapur Subdivision



Proceedings of the Meeting with the Community at ‘Banowara’ Village

Venue: Banowara Village Date: 24.04.2015

Village Profile: (As told by the Panchyat Members)



Religion: Hindu

Caste/ Tribe: Scheduled Caste & Tribes


Additional Occupation: Daily Wage Labourers as Masons and different other occupations

as they gets

Distance from nearest Main

Road (though semi kucha): 7 Kms.


Educational Institute: Only 1 Bengali Medium Govt. Free Primary School and no high

schools


College etc

7 Kms away at Domahani Town



Nearest Hospital: 8 Kms away at Kelejora PHC & 20 Kms away at Asansol


Water Resources: Hand Pumps (7 Nos.) and 3 natural ponds (Water Crisis all through

the year except during monsoon – The Ponds only gets fill.) only.


Cooking Fuel resources: Cow-dung Cakes, Coal & Fire woods

Participants:


iii. Ajit Bauri, Panchyat Member Ms. Jyoti Das iv. Panchyat member



None of the villagers have any knowledge about the ONGC boring activities. Neither, they know that

their village falls within the ONGC Monitoring area. Talks with the Panchyat Member revealed this

fact.

As the village is problem stricken and backward in many ways- like there is no Health Centre, no

educational institution and no option for even seasonal employment many of the villagers felt hopeful

that the ONGC activities may open some doorway for employment and thus even help developing the

situation of the village.

Bhanobara Vi l lage, Barabani Block



E. Consultations with the Community at Punchra Gram Panchayat, Barabani Block,

Durgapur Subdivision

Proceedings of the Meeting with the Community at ‘Kelajora’ Village

Venue: Kelajora Village Date: 24.04.2015




Religion: Both Hindu & Muslim

Caste/ Tribe: A section of the vil lagers belongs to Scheduled Caste and Other Backward

Class. There is no Scheduled Tribe.


Additional Occupation: Daily Wage Labourers at nearer Industries in the Jamuria Industrial Belt

Distance from nearest Main Road

(though the Main Road is semi kucha): 2 Kms.

Education Level: Highest education level found is Graduation completed.

Educational Institute: 1 Bengali medium Govt. Free Primary School


College etc

4 Kms. away at Domahani Town

ICDS Centre 2 (within the vil lage)

Nearest Health Centre: 1 (within the vil lage)- Kelajora PHC

Nearest Hospital: 16 Kms away at Asansol


Water Resources: Hand Pumps (20 Nos.) and 4 natural ponds (Water Crisis all through the

year except during monsoon – The Ponds only gets fi l l .)


Cooking Fuel resources: Cow-dung Cakes, Coal & LPG (by 10% of the Families only)

Participants:


i) Ashish Barui, Panchyat Member Ms. Jyoti Das

ii) Radha Barui, Panchyat Member None of the villagers have any information about the ONGC boring activities. Neither, they know that their village falls within the ONGC Monitoring area. Talks with the Panchyat Member revealed this fact. The villagers have issues regarding Water Crisis, Connectivity (demand for Roads Improvement etc.) and employment.



F. Consultations with the Community at Meja Gram Panchayat, Meja Block, Bankura

Sadar Subdivision, Bankura District Proceedings of the Meeting with the Community

Venue: Panchayat Office

(Villages Covered: 15

Prabhatipur, Churabaria, Gamua, Shyampur 1, Shyampur 2,

Gopalganj 1, Gopalganj 2, Namo Madia 1, Namo Madia 2,

Tarapur 1, Tarapur 2, Kheryari Danga, Dhanmedia 1, Dhanmedia

2 & Meja)

Date: 25.04.2015

Village Profile: (As told by the Panchyat Pradhan)



Religion: Hindu

Caste/ Tribe: A section of the vil lagers belongs to Scheduled Caste and Other Backward

Class. There is no Scheduled Tribe.


Additional Occupation: Daily Wage Labourers at nearer Bankura town.

Education Level: Highest education level found is Post Graduation completed.

Educational Institute: 15 Bengali medium Govt. Free Primary School , 2 Higher Secondary School

ICDS Centre 17

Nearest Health Centre: 4

Nearest Hospital: Bankura District Hospital

Major Ailments: Skin Problem, Asthma & Common Cold

Water Resources: Sufficient no. of Hand Pumps but the Water Level goes pretty low during

dry seasons and Damodar River which is adjacent to the vil lages.


Cooking Fuel resources: Cow-dung Cakes, Coal & LPG (by 10% of the Families only)

Participants:


i) Pratima Das, Panchyat Pradhan Ms. Jyoti Das

None of the villagers have any information about the ONGC boring activities. Neither, they know that

their village falls within the ONGC Monitoring area. Talks with the Panchyat Member revealed this

fact.

The villagers have issues regarding Water Crisis, Connectivity (demand for Roads Improvement etc.)

and employment.



G. Excerpts from overall Consultations at CBM Monitoring area.

Date: 20.04.2015 to 25.04.2015 Areas visited and Community consulted:

a. Bardhaman District

1. Durgapur- Fatehpur Block Community consulted in Villages:

a. Arti

b. Patsawara c. Ichapur d. Amrai e. Tamla f. Bansia

2. Raniganj Block

a. Egara

b. Ballavpur c. Bansra d. Jemeri e. Ratibati f. Tirat

3. Andal Block a. Andal G.P b. Dupchuria c. Gopalmath

4. Jamuria Block a. Jamuria

b. Sidhpur 5. Barbani Block

a. Dhomani b. Bhanowara c. Kalajora d. Hijolgora

b. Bankura District Community consulted in Villages:

1. Meja Block a. Mejia

b. Shyampur

c. Parbatipur

d. Gopalpur

e. Ardhagram

f. Barduari



In most of the places all the influential segments of the Community like the Panchayat Pradhans,

Panchayat Members, the Club Members, Teachers, Women and the Community Members in

general all were consulted. It revealed during the discussion that mostly the Community Members

have a good trust on ONGC and they don’t have any complain regarding the mining activities by

ONGC. Rather, they are expecting to get employment as labourers under the contractors and sub-

contractors of ONGC.

They have issues regarding

1. Water Crisis, 2. Road, Transportation and Connectivity with closest city areas 3. Right Compensation against land acquisition for boring activities

The entire zone, except some part of Andal & Raniganj urban area, is economically and

educationally backward and ignorant about the Environmental Impact of the Bore Well and other

mining activities. Though, some sensible part of the Community like Teachers, some Youth

Groups etc. are apprehending that the ONGC Mining activities are impacting the Climate

adversely and thus the Water Crisis and low Rain rate is increasing.

Yet, the larger segment of the community is still very much hopeful that ONGC will carry on the

Development Activities for the overall development of the Zone like they may build Schools, Hospitals,

Pond embankments, Community Hall, Water resources development etc. As most of the areas are still

not having any proper toilet or latrine arrangement there is another very pertinent demand from the

community of different areas is to build Community Latrines and Toilets especially for Women.

Vi l lage- Tambla, Durgapur- Fatehpur Block- Consultation with Panchyat

Member Ms. Khumarani Bagdi

Handpump- Village Tambla, the Water

Resource

Amrai , Ward No. 12, Durgapur

Municipal Corporation



Publ ic Consultation at Hi jolgora Vi l lage Jamuria

Block Publ ic Consultation at Dhomani Village, Barabani Block

Interaction Panchyat Members at Egra Vi l lage, Nurpur Gram Panchayat, Raniganj Block



ANNEXURE XIX: FORMULA USED FOR CALCULATION OF NOISE LEVEL

A. CALCULATION FOR DETERMINATION OF NOISE LEVEL AT DIFFERENT

DISTANCES

Distance from the source where Noise level is measured = R1 [Here considered 10 m.]

At the distance R1, Noise Level (L1) = 94 db

Let the distance of receiver from the source = R2 [Here calculated at various distance]

Therefore, at the distance R2 Noise Level (L2) = L1 – 20 Log (R2/R1)

B. CALCULATION FOR COMBINED NOISE LEVEL AT CERTAIN POINT

Let, Ambient (Base) Noise Level at a certain point = Leq1 [Here considered as 50 db]

Noise Level coming from a point source at the same point = Leq2

So, there will be a combined noise level (Leq3) at that point.

Combined Noise Level (Leq3) = 10 Log (10 Leq1/10 + 10 Leq2/10)

C. CALCULATION OF ATTENUATION

The noise reduction due to barrier (attenuation) is determined by first calculating the path length

difference (δ). Path length is defined by the following equation:

δ = A + B – C

Here, A = Angular distance from source (S) of the noise to noise barrier (B)

B = Angular distance from the noise barrier (B) to noise receiver (R)

C = Linear distance from source (S) and receiver (R) of the noise

In the following a Schematic Diagramme is provided to show the positions of noise source, receiver

and barrier.

X5

X6 X7

X4

X1

X2

X3

X1 to X6 = Ground Level, X2 = Source of Noise (at man height), X3 = Receiver

of Noise (at man height), X3 to X7 = Height of the Barrier from the ground level,

X4 to X7 = Effective Height of barrier (here considered as 4 m.), A = Distance

between X2 and X3, B = Distance between X3 and X5,

C = Distance between X1 and X6.



Frequency (f) of the noise at the source is considered as 500 Hz.

Velocity (c) of the sound = 340 m./sec.

We know from the standard formula, Wave Length (λ) = c / f

Here we have calculated the wave length as (500/340) m. = 0.68 m.

From these results we have to calculate the Fresnel Number (N), which is determined by the following

equation:

N = δ / λ = (A+B-C) / λ

Having the value of N (Fresnel Number), Attenuation (Ae) value is determined from the Standard semi-

logarithmic graph.

When the value of Attenuation (Ae) is deducted from the noise level, we get the net noise level (Leq)

at that place after putting a barrier or attenuation along the path of noise i.e. Leq(actual) – Ae = Leq(net

value).


Arcadis/10002910/August’17 139 ONGC

ANNEXURE XX: RESOURCES AVAILABLE ONSITE WITH THE CRISIS MANAGEMENT TEAM



ANNEXURE XXI: NABET ACCREDITION CERTIFICATE OF LAB



ANNEXURE XXII: DURATION AND EXTEND OF FLARING



ANNEXURE XXIII: FLOWING GAS COMPOSITION OF WELL



ANNEXURE XXIV: SOCIO-ECONOMIC SURVEY QUESTIONNAIRE FOR HOUSEHOLDS





ANNEXURE XXV: DISTRIBUTION OF CSR FUND IN THE CENTRES OF RANIGANJ AREA

Year Name of the recipient of CSR fund Purpose for which CSR fund was given

2008-09 Ichhapur N. C. High Scool, P.O. Ichhapur , Dist. Burdwan

Development of boundary wall of the school

2009-10 -do- Construction of two nos. Cycle Stand

2010-11 Gopalmath High Scool, Oyariya, Burdwan

Construction of one class room

2010-11 Muchipara Village, P.O. Ichhapur, Dist. Burdwan

One Tube well

2010-11 Gangamata Primary School, P. O. & Village: Ichhapur, Dist. Burdwan

Chairs and Tables for Classrooms.

2011-12 Durgapur Padakhep Society, Kururia Danga, P.O. Amrai, Durgapur

Construction of one class room



ANNEXURE XXVI: RATIONALE FOR SELECTION OF MONITORING LOCATIONS

Location Code

Location Criteria for Selection Monitoring Frequency

AMBIENT AIR STATIONS

AQ1 Mahishmura village

To establish the ambient air quality at Upwind direction and adjoining residential area and in the vicinity of corehole RSB

Two times a week for 12 weeks

AQ2 Kelejora village To establish the ambient air quality at upwind direction and adjoining residential area and in the vicinity of corehole RSE and RSC

AQ3 Patharchur village To establish the ambient air quality at upwind direction and adjoining residential area and in the vicinity of corehole RSD

AQ4 Bansia village

To establish the ambient air quality at Downwind direction and adjoining residential area

AQ5 Banshgara village To establish the ambient air quality at Downwind direction, adjoining residential area and in the vicinity of corehole RSI and RSH and pilot well RN1

AQ6 Pahari village To establish the ambient air quality in Downwind direction in the vicinity of pilot well RN3 as well as to understand ambient air quality of the adjoining residential area.

AQ7 Arati village To establish the ambient air quality at Downwind direction near the pilot well RN3 and adjoining residential area

AQ8 Tamla village To establish the ambient air quality at upwind direction and the adjoining residential area.

AQ9 Andal (Near Dubchururla Village)

To establish the ambient air quality at upwind direction and in the vicinity of the various sponge iron industries and thermal power plant

AQ10 Shrirampur village To establish the ambient air quality at Upwind direction in the vicinity of the settlement area and various sponge iron industries

AMBIENT NOISE STATIONS

NQ1 Mahishmura village

Ambient noise quality monitoring station would be selected based on the following criteria;

To establish the baseline noise quality within 1 km. radius of the proposed well location,

To establish baseline noise quality near residential area

Continuous for 24 hours once during the study period

NQ2 Kelejora village

NQ3 Patharchur village

NQ4 Bansia village

NQ5 Banshgara village



Location

Code Location Criteria for Selection

Monitoring

Frequency

NQ6 Pahari village To establish baseline noise quality near access road to be used to the proposed project

NQ7 Arati village

NQ8 Tamla village

NQ9 Andal (Near Dubchururla Village)

NQ10 Shrirampur village

SOIL SAMPLING LOCATIONS

SQ1 Dubchururla village, Bardwan district

The sampling sites were selected at areas close to the proposed drilling site and that might be impacted due to the proposed project

During selection of site different type of land use were considered where proposed project would impact

One grab sample at each location

SQ2 Banguri village, Bardwan district

SQ3 Amrai village, Bardwan district

SQ4 Bansia village, Bardwan district

SQ5 Kelejora village, Bardwan district

SQ6 Patharchur village, Bardwan district

GROUNDWATER SAMPLING LOCATIONS

GW1 Shakradanga village

To assess the potable water quality at the project site being used for meeting drinking and domestic requirements


GW2 Dubehuria village

GW3 Icchapur village near pilot well RN3

GW4 Banshia village

GW5 Amrai village

SURFACE WATER SAMPLING LOCATIONS

SW1 Near Egara Village (u/s Damodar river)

This location is selected to establish surface water quality of Damodar river at upstream location with respect to the project area


SW2 Near Midnapur Village (m/s of Damodar river)

This sampling location is selected to establish midstream surface water quality of Damodar river and the river which has been sourced by local people for domestic needs.

SW3 Near Ramprasadpur Village (m/s of Damodar river)

This sampling location is selected to establish midstream surface water quality of Damodar river and assess the potential impact due to



Location

Code Location Criteria for Selection

Monitoring

Frequency

effluent discharge from nearby sponge iron industries.

SW4 Srirampurrai Village

(d/s of Damodar river)

This location is selected to establish surface water quality of Damodar river at downstream location with respect to the project area and assess the potential impact due to effluent discharge from nearby coal mine area

SW5 Near Jhatidanga Village

Village pond

TRAFFIC MONITORING STATION

T1 Durgapur to Kolkata Road

To establish traffic load on NH2 and assess possible impact on the vehicular movement due to the project. To establish traffic load on the access road presently used for the coal mines and would be further used in future for the proposed project

Continuous for 24 hours once during the study period

T2 Village road of Andal Village

To establish traffic load on the acess road used by local residents and assess possible impact on the vehicular movement due to the project

T3 Village road of Shrirampuar Village

To establish traffic load in the access road of the village and assess possible impact on the vehicular movement due to the project

T4 Village road of

Jamuria Village

To establish traffic load on the access road used by local villagers. To establish traffic load on the access road presently used for the sponge iron industries and would be further used in future for the proposed project.


Arcadis/K-20271/Oct 2017 149 ONGC

ANNEXURE XXVII: SUMMARY OF PUBLIC CONSULTATION CONDUCTED IN THE BLOCK

S.N Village

Name

HH

size/Pop. (approx.)

Livelihood Main

Cultivation crops

Education

facility/AWC

Health

facility

Drinking

water source

Irrigation

source

Ground

water level (ft)

Source of

fuel

Electricity

availability

Village

roads

Common Property

Resource

1 Arti 600/3600 Main

farming,

secondary

labour work

Paddy, One Govt. Primary

School,

One Urdu Primary

school,

Two AWC

N.A. Hand Pumps,

own well

Tube well and

village Pond

80 Wood and

Cow dung

Available in

all houses

Paved and

unpaved both

Grazing land(1 acre),

Community pond (8)

2 Patsawara 550/2750 Main

farming,

secondary

labour work

Paddy One Govt. Primary

School,

One AWC

N.A. Hand Pump ,

own well

Well and

Village Pond

80 Wood and

Cow dung

Available in

all houses

Paved and

unpaved both

Grazing land (2 acre),

Community pond (6)

3 Ichapur 1130/4793 Farming in

major and

secondary

labour work

Paddy, Wheat One Govt. Primary

School High School,

One , Privet Primary

School four AWC two

Health sub

center

Hand Pumps,

own well

Tube well and

Wells

80 Wood, cow

dung and coal

Available in

all houses

Paved and

unpaved both

Pond (5), Grazing

land(3acre),

4 Amrai 3000/15000 Labour work N.A Govt. Primary School

three, High School 1

AWC 5

N.A. Tap water N.A 60 Coal, Wood

and minor in

LPG

Available in

all houses

Paved and

unpaved both

N.A.

5 Tamla 1400/4000 Main

farming,

secondary

labour work

Paddy, Wheat Govt. Primary School,

One AWC

N.A. Hand Pumps,

open well and

tube well

Tube well ,

Wells and

Pond

250 Coal, Wood

and cow dung

Available in

all houses

Paved and

unpaved both

Grazing land

Community pond (4)

6 Bansia 350/2500 Main

farming,

secondary

labour work

Paddy,

vegetable

Govt. Primary School,

One AWC two

N.A. Hand Pumps

and open well

Tube well and

open wells

100 Wood and

cow dung

Available in

all houses

Paved and

unpaved both

Community well (1)

7 Andal 1920/9548 Service,

labour work,

business

N.A Govt. Primary School,

2 AWC two One Govt.

High school,

One

PHC 1 Hand Pumps,

open well and

tube well

Tube well and

open wells

250 Wood and

minor in LPG,

cow dung,coal

Available in

all houses

Paved and

unpaved both

N.A

8 Dupchuria 910/3650 Main labour

work,

secondary

farming

Paddy one Govt. Primary

School,

2 AWC

N.A Hand Pumps,

open well and

tube well

Tube well and

open wells

250 Wood, cow

dung and

minor in LPG

Available in

all houses

Paved and

unpaved both

N.A

9 Egara 1000/6000 Main

farming,

secondary

labour work

Paddy, Wheat, One Govt. Primary

School,

One High school,

Seven AWC

Health sub

center

Hand Pumps,

open well

Tube well and

open Wells

250 Wood cow

dung and coal

Available in

all houses

Paved and

unpaved both

N.A

10 Gopalmath 272/1220 Main

farming,

secondary

labour work

Paddy, Wheat, One Govt. Primary

School,

One High school,

3 AWC

Health sub

center

Hand Pumps,

own well

Tube well and

open wells

200 Wood cow

dung and coal

Available in

all houses

Paved and

unpaved both

N.A

11 Ballavpur 1450/6400 Service,

labour work,

business,

Main

farming

Paddy, One Govt. Primary

School,

One High school,

2 AWC

Health sub

center

Hand Pumps,

own well, Tap

water

Tube well and

open wells

250 Wood cow

dung and coal

Available in

all houses

Paved and

unpaved both

N.A

12 Bansra 1290/5700 Service,

labour work,

business,

Main

N.A One Govt. Primary

School,

2 AWC

Health sub

center

Tap water N.A 250 Wood cow

dung and coal

Available in

all houses

Paved and

unpaved both

N.A

13 Jemeri 800/4500 Main

farming,

secondary

labour work


School,

2 AWC

N.A Hand Pumps,

own well,

Tube well and

open Wells

200 Wood cow

dung and coal

Available in

all houses

Paved and

unpaved both

N.A



S.N Village

Name

HH

size/Pop. (approx.)

Livelihood Main

Cultivation crops

Education

facility/AWC

Health

facility

Drinking

water source

Irrigation

source

Ground

water level (ft)

Source of

fuel

Electricity

availability

Village

roads

Common Property

Resource

14 Ratibati 900/4500 Service,

labour work,

business,

Main


School,

One High school,

2 AWC

Health sub

center

Hand Pumps,

own well, Tap

water

Tube well and

open Wells

250 Wood cow

dung and coal

Available in

all houses

Paved and

unpaved both

N.A

15 Tirat 900/4500 Service,

labour work,

business,

Main


School,

One High school,

2 AWC

Health sub

center

Hand Pumps,

own well, Tap

water

Tube well and

open Wells

250 Wood cow

dung and coal

Available in

all houses

Paved and

unpaved both

N.A

16 Jamuria 500/3000 Main

farming,

secondary

labour work


School, One Junior

High school

2 AWC

N.A Hand Pumps,

own well,

Tube well and

open Wells

200 Wood cow

dung and coal

Available in

all houses

Paved and

unpaved both

N.A

17 Sidhpur 400/1400 Main

farming,

secondary

labour work


School, One High

school

2 AWC

Health sub

center

Hand Pumps,

own well,

Tube well and

open Wells

250 Wood cow

dung and coal

Available in

all houses

Paved and

unpaved both

N.A

18 Domahani 1200/4500 Main

farming,

secondary

labour work


School, One High

school

2 AWC

N.A Hand Pumps,

own well,

Tube well and

open Wells

300 Wood cow

dung, coal and

LPG Gas

Available in

all houses

Paved and

unpaved both

Grazing land

Community pond (4)

19 Bhanowara 300/1800 Main

farming,

secondary

labour work


2 AWC

N.A Hand Pumps,

own well,

Tube well and

open Wells

300 Wood cow

dung, coal and

LPG Gas

Available in

all houses

Paved and

unpaved both

Grazing land

Community pond (4)

20 Kalajora 400/2000 Main

farming,

secondary

labour work


2 AWC

Health sub

center

Hand Pumps,

own well,

Tube well and

open Wells

300 Wood cow

dung, coal and

Available in

all houses

Paved and

unpaved both

Grazing land

Community pond (8)

21 Hijolgora 1200/5500 Main

farming,

secondary

labour work


2 AWC

N.A Hand Pumps,

own well,

Tube well and

open Wells

250 Wood cow

dung, coal and

Available in

all houses

Paved and

unpaved both

Community pond (9)

22 Kulti 550/2500 Service,

labour work,

business,

Main


School,

One High school,

2 AWC

Health sub

center

Hand Pumps,

own well, Tap

water

Tube well and

open Wells

250 Wood cow

dung and coal

Available in

all houses

Paved and

unpaved both

N.A

23 Mejia 900/4500 Main

farming,

secondary

labour work


2 AWC

Health sub

center

Hand Pumps,

own well,

Tube well and

open Wells

250 Wood cow

dung, coal and

Available in

all houses

Paved and

unpaved both

Community pond (9)

24 Shyampur 800/4000 Main

farming,

secondary

labour work


One High school

2 AWC

N.A Hand Pumps,

own well,

Tube well and

open Wells

350 Wood cow

dung, coal and

Available in

all houses

Paved and

unpaved both

Community pond (3)

25 Parbatipur 1200/6000 Main

farming,

secondary

labour work


school

3 AWC

N.A Hand Pumps,

own well,

Tube well and

open Wells

350 Wood cow

dung, coal and

Available in

all houses

Paved and

unpaved both

N.A)

26 Gopalpur

700/4200 Main

farming,

secondary

labour work


school

2 AWC

Health sub

center

Hand Pumps,

own well,

Tube well and

open Wells

350 Wood cow

dung, coal and

Available in

all houses

Paved and

unpaved both

N.A)

27 Ardhagram

900/5400 Main

farming,

secondary

labour work


One High school

2 AWC

N.A Hand Pumps,

own well,

Tube well and

open Wells

350 Wood cow

dung, coal and

Available in

all houses

Paved and

unpaved both

N.A)



S.N Village

Name

HH

size/Pop. (approx.)

Livelihood Main

Cultivation crops

Education

facility/AWC

Health

facility

Drinking

water source

Irrigation

source

Ground

water level (ft)

Source of

fuel

Electricity

availability

Village

roads

Common Property

Resource

28 Barduari

600/3200 Main

farming,

secondary

labour work


One High school

2 AWC

N.A Hand Pumps,

own well,

Tube well and

open Wells

350 Wood cow

dung, coal and

Available in

all houses

Paved and

unpaved both

N.A)