Chyangba Water Project ( Pem Dorjee Sherpa)

Engineers Without Borders – USA : Assessment Plan © 2006 Slide #

Water Distribution System Chayangba, Nepal

Implementation Trip #1 and #2

• Date of TAC Presentation: _____ 2008

• Project Tracking– Location: Chayangba, Nepal– Risk Level: Low

• Chapter(s): EWB-USA Boulder Professional Chapter

• Initial Site Assessment Travel: November 2007

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Project Background Participants

• Chayanba Youth Group ( Pem Dorjee Sherpa)• Boulder Rotary• EWB Boulder Professionals

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Project History

• Site Assessment #1– November 2006– Mike Gordon & Pem Dorjee Sherpa

• Site Assessment #2– January 2008– Louise Hamlin & Pem Dorjee Sherpa

• Design Completed – July 2008– Implementation Trip #1 – November 2008– Implementation Trip #2 – May 2008

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Objective(s) of Project

• Overall Project Objective: – This project proposes to provides reliable and safe

drinking water to the 400 residents of Chayangba village, Solukhumbo region, Nepal. The project will replace a non functional system of pipes and a single community tap stand with a properly engineered source collection and distribution system flowing to community tap stands within an easy walk of all the village’s residents. The benefits of this project include the reduction of waterbourne illnesses, improved productivity, and education on personal hygiene.

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Project Location

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Areal View of Chayangba

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Chayangba Village from Distance

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Blacksmith Village

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Conceptual Layout

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Spring Source

Existing Pipeline

Area C

(# of houses

Pressure Box

Area A

(# of houses)

Area B

(# of houses)

Area D

( # of houses)

Existing Distribution System

Source near Blacksmith

_____ River


General Site Assessment Information

• Population• Population - 400• Primary age range – Pre-teen and older adults• After age 18 – many move to Kathmandu for jobs or schooling

• Religion– Sherpa (areas A, B, and C) and Hindu (Area D)

• Economics– Average yearly income – $500 US– Many of young adults send money back to families– Primary occupation – subsistence farmer

• Livestock: Goats, chickens, water buffalo, cows• Crops grown – corn, potatoes and vegetables

– Secondary occupations• 1 Blacksmith• 4 Teachers• Stone mason, carpenter

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Site Assessment Data

• Key locations identified via hand held GPS– Existing

Houses– Existing

distribution system

– Spring source 1 L/sec

– Desired tap locations

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Water Distribution System Design

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General Design Parameters

• Demand estimate – 18,000 liters per day– 70 households– Population per household: ~7– Per capita water use - 45 liters per person– Demand for each area estimated & pipeline designed

accordlingly

• Spring source– Observed 1 liter/sec….(Site assessment #1)– Assume 0.5 liter/sec in dry season

• Storage– 1 day storage– Source protection reservoir serves as storage

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General Design Parameters

• Maximum pressure based on schedule II, HDPE pipe or 80psi

• Pipeline– Diameters are varied to design flow rates– All pipes will be HDPE purchased in Katmandu– Depth line to be buried to 2’– Connections will be made with banded over-sleeves

• Pressure relief boxes– Placed to restrict pressure to a maximum of 80 psi and/or to

restrict tap stand pressure to 40 psi

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Source Collection

Flow Measurements

Assessment Trip #1 (Oct 2006)

Measurement #1 1.0 liter/ sec

Assessment Trip #2 (Nov 2007)

Measurement #1 1.8 liter /sec

Measurement #2 2.2 liter / sec

Average: 1.66 liter /sec

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Source Collection

Water Quality at the Source

Sample time/date 11/11/07,2:21p

pH (acceptable range 6.5 – 8.5)

7.5

Water temp (deg C) 10-11

Dissolved O2 (> 5 ppm) 6-8 ppm

Nitrate (<10 ppm) 0 ppm

Phosphate (<.1 ppm) << 1 ppm

Turbidity (clear) 0

Results of Coliscan coliform culture #1

Negative

Results of Coliscan #2 4 colonies

Results of LaMotte coliform culture #1

Weakly positive

Results of LaMotte #2 Weakly positive

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Source Collection Design

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• 18,000 liter collection tank

• Stone and mortar construction

• 6mil polyethylene liner

• Foundation to bedrock

• Adjustable weir for overflow


Example site elevation data

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Total demand (flow/day)LF of pipelineDiameter of pipeline

(sized for X cfs)


Pressure relief tanks

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Existing community taps (2): see belowNew design (12): to be based on existing and widely-adopted design.


Pressure relief boxes

• Existing boxes (3): leaking and need replacement

• New boxes (14): stone masonry or poured concrete

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Tap Stand Design

• Existing community taps (2): see below

• New design (12): to be based on existing and widely-adopted design.

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Estimated Costs

• Total estimated cost $ 30,000.00

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Donors & Funding

• List sources of funds and in-kind contributions

– Private donors - $12,000

– Consulting Firm - $3000

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Metrics

Technical:• What metrics will be used to determine the technical success of this

project?– What types of data will need to be collected before and after the

project is implemented to evaluate success of the project?• What are the future plans for visiting and following up with any

problems that may arise?

Economics: (If your project has an economic impact)• What metrics will be used to measure the affect of this project on

the community? • What data are needed? • From where will your team collect the data?

– Follow up trips & surveys– Dates missed due to being sick & lost productivity– Not direct impact to economy

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Metrics

Health: • Health information Data

– List data– Infant mortality was cut in half in 90s– Surveys of illnesses– Likely a lot of diseases water related– Nearest health care center – ½ day walk

• People prefer another hospital further away– Tests on agricultural runoff – poorest people drink ag runoff

• What metrics will be used to measure the affect of this project on the community? – No implementation component with this phase, but in future, will

determine prevalence of water borne illnesses, mortality rates• Follow up surveys • Specifically focus on lower village which mainly relied ag runoff as water

supply

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Health

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• High incidence of gastro-intestinal disorders

• High infant mortality rate

• Health assessment survey adopted from EWB-Nepal, 12% of households surveyed

• Metric is decrease in GI illnesses (goal is 50% decrease in first year)


Community Involvement

• Village water council established– Water and system usage laws passed– Responsible for siting system elements– Tax collection– Water quality montoring

• Each household contributes 10 days of labor towards construction

• Single employee will have system maintenance responsibilities – Salary provided by tax collection

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Community Education Goals

• Villagers understand the importance of clean drinking water and hygiene

– kitchen cleanliness and organization

• Villagers understand factors in water quality

• Education by EWB and water employee (monitor)

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Construction Phasing

• Phase 1– Tap stand and pressure break box construction

– Oct.

• Phase 2– Pipe line construction

– Source collection reservoir

– Nov. thru Dec.

• Phase 3– Follow up

– Apr.

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Implementation Trips

• Implementation Trip #1 (Oct 08)– Organize transport of materials– Review design– Confirm construction schedule– Work with Chayangba community

• Present design• Confirm construction schedule• Assist with organizing laborers

– Involve EWB-Nepal• Implementation Trip #2 (Nov-Dec 08)

– Oversee construction in progress– Work with on-site construction volunteer to solve issues/problems

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Trip Details – Equipment and Training

• Project equipment – From USA: GPS units, laptop computers (and lot of batteries)– From Kathmandu: shovels, raw materials, hand tools, etc

• Describe what training your team has undergone/will undergo for this project.– First aid– Water system calculation spreadsheet– GPS use

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Trip Details - Living Arrangements

• Transportation: as a group when possible, air to Phavlu, by foot to village‘

• Housing: community is providing house for the volunteers

• Volunteers will eat local food and purify local water

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Trip Details - Safety & Emergency Plan

• Safety Plan– Travel in groups of two or more– Determine meeting place if separation occurs at any stage during travel– Each group will carry a first aid kit and water– CPR/First Aid certification for Health Point person

• Emergency Plan & Exit Strategy– Team members will have travel insurance which includes medical care and

evacuation insurance– Hospital 10km away (Phavlu)

• Are there any State Department Warnings for this country?– No – will monitor as travel dates approach

• Are there any other safety concerns for traveling at this time? – No – will monitor as travel dates approach. Maoist threat substantially reduced

since elections in February 2008.

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Project Contact information

• Project / Community leader

• Pem Dorjee Sherpa E-mail: [email protected] Phone: 303-834-5512Address: 17618 w. 14th Ave # 8 Golden, Co. 80401

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Documents

Chyangba Water Project ( Pem Dorjee Sherpa)