City of Penticton Water TreatmentHall/Documents/2009 Annual Report... · City of Penticton Water Treatment ... 1987-1988 and a dual source, water treatment plant was determined to

City of Penticton Water Treatment 2009 Annual Report

-1-

Executive Summary This report was completed in May 2010 in accordance with the requirements of the Ministry of Health Services, Safe Drinking Water Regulations. Also included in this report is discharge monitoring results as specified by the Ministry of Environment in regards to permit PE-13491 regulation of discharge water into Penticton Creek. 1. Water Treatment History In 1986 the City of Penticton experienced an outbreak of Giardia that was determined to have originated from the Penticton Creek water source. Engineering studies were conducted in 1987-1988 and a dual source, water treatment plant was determined to be the best solution for the future of Penticton. 2. Water Supply In 2009 the City of Penticton pumped 7410 mega liters from the Okanagan Lake Pump Station to the Penticton Water Treatment Plant. In addition to the lake volume, 256.53 mega liters of creek water was treated at the Water Treatment Plant. Total intake into the treatment plant was 7667 mega liters during 2009. This is an increase of 158 mega liters from 2008. Several different scenarios are considered to have influenced this increase with the dominant one being development. The City of Penticton maintains the Warren Avenue Well as a backup source that can provide twelve mega liters per day if required in an emergency. In 2009, no water from the Warren Avenue Well was pumped into the distribution system. 3. Water Treatment The City of Pentictons Water Treatment Plant is a multi barrier system that is designed to treat water from two sources; Okanagan Lake and Penticton Creek. The water quality of the two sources is distinctly different and requires different protocols for successful treatment. The objectives of treatment for the two sources are to meet Canadian Drinking Water Standards on a consistent basis. The Water Treatment Capacity Upgrade constructed in 2009 included the installation of the following processes; high rate dissolved air flotation replacing the gravity plate settler, pump station and dedicated main for the Ridgedale Reservoir, gravity thickeners for the residuals and increased clearwell storage. In 2009, laboratory testing indicated that all tests met or exceeded the Guidelines for Canadian Drinking Water Quality. 4. Water Distribution The City of Penticton water system consists of five reservoirs, three pump stations, two booster stations, 160 Km of distribution mains, 900 fire hydrants and 9000 water service connections.


-2-

5. Water Use Water use in Penticton has been relatively consistent over the past several years despite the fact that the population has been steadily increasing. Total distribution water for the year 2009 was 7527.63 million liters. Citizens of Penticton are practicing water conservation and we have seen improvement in this statistic as citizens become more aware of water issues through programs sponsored by the City Water Conservation Program. In 2009, Peak Day Demand was 41.17 ML/day on July 23, one of the lowest Peak Day on record. Average Daily Demand increased slightly from 20.33 ML/day (2008) to 20.62 ML/day. Maximum demand per capita was 1176 Lppd based on a population of 35,000.

Total Water Usage from all sources 1999-2009 Graph Maximum Daily Demand per Capita 2000-2009 Graph (35,000. pop 2009, 1176 l/c/d)

0100020003000400050006000700080009000

Meg

a Li

ters

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

0200400600800

10001200140016001800

Lite

rs/d

/cap

ita

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009


-3-

6. Quality Monitoring In 2009, 101 microbiological tests were performed on the raw water supply. The microbiological tests on our raw water supply indicated: Total Coliform counts that ranged from 19 to >2419 counts/100 ml for Penticton Creek and from Nil to 118 counts/100 ml for Okanagan Lake. E Coli Coliform counts ranged from Nil to 51 counts/100 ml for Penticton Creek and from Nil to 3.1 E Coli Coliform counts/100 ml for Okanagan Lake. 427 microbiological tests were sampled for E.coli and Total Coliform on the treated water supply in 2009. No samples collected from the distribution system tested positive for Total Coliform. Biological tests were collected from 59 different locations within the city distribution boundaries. Twelve of these locations accounted for the majority of samples collected with more than 10 samples collected at that particular location. In 2009, a commercial lab tested the treated water and source waters several times during the year. These scans test for trihalomethanes, metals, nutrients, total organic carbon and other nutrients. Samples are collected at the PRV Station, Okanagan Lake sample tap, Penticton Creek sample tap, Warren Avenue Well and finished water after filtration. For quality control 10% to 20% of the samples sent out to commercial labs are replicated. All commercial lab tests performed on the distributon water met or exceeded the Guidelines for Canadian Drinking Water Quality. 7. Backwash Water Discharge to Penticton Creek There were no unauthorized discharges to Penticton Creek during 2009. The City of Penticton is constantly evaluating and making improvements to its backwash handling procedures in relation to the backwash containment tank. Ministry of Environment permit # PE-13491 dictates requirements regarding discharge water to Penticton Creek. A copy of this permit is contained within this report in Appendix E. Capital upgrades to the residuals process were constructed in 2009 as part of the Water Treatment Capacity Upgrade. These upgrades consisted of a new pump station and two new gravity thickeners to process backwash residuals. 8. Supervisory Control and Data Acquisition (SCADA) In 2009, the City of Penticton improved the SCADA system at the Water Treatment Plant during the Capacity Upgrade capital project. Two new operator terminals were added in the residuals building and the DAF area. The majority of the distribution system SCADA transmission is directed through the Duncan Avenue Pump Station to the Water Treatment Plant via fiber optic cable.


-4-

City of Penticton Annual Report

Table of Contents Executive Summary............................................................................................1

Table of Contents.................................................................................................................. 4 1. Water Treatment History..........................................................................12 2. Water Supply System ................................................................................12

2. 1 Penticton Creek.......................................................................................................... 12 2. 2 Contamination of Penticton Creek or Greyback Mountain Reservoir....................... 12 2. 3 Okanagan Lake .......................................................................................................... 13 2. 4 Contamination of Okanagan Lake Source ................................................................. 14 2. 5 Warren Avenue Well ................................................................................................. 14 2. 6 Contamination Issues for Warren Avenue Well ........................................................ 14

3. Water Conservation...................................................................................14 4. Cross Connection Control.........................................................................16 5. Water Treatment .......................................................................................18

5. 1 Plant Profile ............................................................................................................... 19 5. 2 Process Description.................................................................................................... 21 5. 3 Water Use License ..................................................................................................... 24 5. 4 Penticton Creek Water License (Waterworks Local Authority)................................ 24 5. 5 Okanagan Lake Water License (Waterworks Local Authority) ................................ 24 5. 6 Capital and Improvement Projects Completed in 2009 ............................................. 24 5. 7 Anticipated Capital and Improvement Projects for 2010 .......................................... 25

6. Water Distribution.....................................................................................25 6.1 Water system pressure zones: ..................................................................................... 26

7. Water Usage Monitoring...........................................................................38 7.1 Source Water and Consumption 2009 ........................................................................ 42

8. Water Quality Monitoring ........................................................................43 8.1 Internal Lab Testing.................................................................................................... 47 8.2 Giardia Performance Monitoring (CT) ....................................................................... 47 8.3 Quick Facts Okanagan Lake Lab Data 2009 ......................................................... 47 8.4 Quick Facts Penticton Creek Lab Data 2009 ......................................................... 49 8.5 Quick Facts Intake and Distribution System 2009 ................................................ 49

9. Backwash Water Discharge to Penticton Creek .....................................50 10. SCADA Supervisory Control and Data Acquisition...........................51 Irrigation Systems.............................................................................................52

11.1 Penticton Creek Irrigation System............................................................................ 52 11.2 Ellis Creek Irrigation System.................................................................................... 53

List of Figures Figure 1 Okanagan Lake Water Shed Schematic .................................................................. 13 Figure 2 DAF Basin Photo..................................................................................................... 18 Figure 3 Penticton Water Treatment Plant Schematic.......................................................... 20


-5-

Figure 4 Monthly Filter Washes Graph 2009 ....................................................................... 22 Figure 5 Distribution Schematic ........................................................................................... 27 Figure 6 Duncan Avenue Reservoir Photo ........................................................................... 28 Figure 7 Ridgedale Reservoir Photo ..................................................................................... 29 Figure 8 Carmi Reservoir Photo ........................................................................................... 30 Figure 9 Carmi Booster Station Photo .................................................................................. 31 Figure 10 Evergreen Reservoir Photo................................................................................... 32 Figure 11 Gordon Avenue Reservoir Photo.......................................................................... 33 Figure 12 Gordon Avenue Booster Station Photo ................................................................ 34 Figure 13 Lake Pump Station Photo ..................................................................................... 35 Figure 14 Ellis Creek Monitoring Installation Photo............................................................ 36 Figure 15 Water Plant Capacity Upgrade ............................................................................... 37 Figure 16 Total Water Usage 2000-2009 Graph.................................................................... 38 Figure 17 Water Sources 2000 -2009 Graph ........................................................................ 39 Figure 18 Average Daily Demand per Capita 1996-2007 Graph (2000-2009 pop 35,000) .. 40 Figure 19 Maximum Daily Demand per Capita 2000-2009 Graph ...................................... 41 Figure 20 Water Treatment Plant PLC Photo ....................................................................... 51 List of Tables Table 1 Plant Profile ............................................................................................................. 19 Table 2 Chemical Usage 2009 .............................................................................................. 21 Table 3 Chlorine and Sulphur Dioxide dosages 2009 .......................................................... 23 Table 4 Source Water 2009................................................................................................... 42 Table 5 Distribution Monitoring Location Results 2009...................................................... 45 Appendix A List of Monthly Distribution Monitoring Results A 1. 1 January 2009 Distribution Monitoring Results......................................................... 1 A 1. 2 February 2009 Distribution Monitoring Results....................................................... 2 A 1. 3 March 2009 Distribution Monitoring Results........................................................... 3 A 1. 4 April 2009 Distribution Monitoring Results............................................................. 4 A 1. 5 May 2009 Distribution Monitoring Results.............................................................. 5 A 1. 6 June 2009 Distribution Monitoring Results.............................................................. 6 A 1. 7 July 2009 Distribution Monitoring Results............................................................... 7 A 1. 8 August 2009 Distribution Monitoring Results.......................................................... 8 A 1. 9 September 2009 Distribution Monitoring Results .................................................... 9 A 1. 10 October 2009 Distribution Monitoring Results ...................................................... 10 A 1. 11 November 2009 Distribution Monitoring Results .................................................. 11 A 1. 12 December 2009 Distribution Monitoring Results................................................... 12 A 2. 1 January 2008 Distribution Monitoring Results....................................................... 13 A 2. 2 February 2008 Distribution Monitoring Results..................................................... 14 A 2. 3 March 2008 Distribution Monitoring Results......................................................... 15 A 2. 4 April 2008 Distribution Monitoring Results........................................................... 16 A 2. 5 May 2008 Distribution Monitoring Results............................................................ 17 A 2. 6 June 2008 Distribution Monitoring Results............................................................ 18


-6-

A 2. 7 July 2008 Distribution Monitoring Results............................................................. 19 A 2. 8 August 2008 Distribution Monitoring Results........................................................ 20 A 2. 9 September 2008 Distribution Monitoring Results .................................................. 21 A 2. 10 October 2008 Distribution Monitoring Results ...................................................... 22 A 2. 11 November 2008 Distribution Monitoring Results .................................................. 23 A 2. 12 December 2008 Distribution Monitoring Results................................................... 24 A 3. 1 January 2007 Distribution Monitoring Results....................................................... 25 A 3. 2 February 2007 Distribution Monitoring Results.................................................... 26 A 3. 3 March 2007 Distribution Monitoring Results......................................................... 27 A 3. 4 April 2007 Distribution Monitoring Results........................................................... 28 A 3. 5 May 2007 Distribution Monitoring Results............................................................ 29 A 3. 6 June 2007 Distribution Monitoring Results............................................................ 30 A 3. 7 July 2007 Distribution Monitoring Results............................................................ 31 A 3. 8 August 2007 Distribution Monitoring Results........................................................ 32 A 3. 9 September 2007 Distribution Monitoring Results .................................................. 33 A 3. 10 October 2007 Distribution Monitoring Results ..................................................... 34 A 3. 11 November 2007 Distribution Monitoring Results ................................................. 35 A 3. 12 December 2007 Distribution Monitoring Results................................................... 36 A 4. 1 January 2006 Distribution Monitoring Results....................................................... 37 A 4. 2 February 2006 Distribution Monitoring Results..................................................... 38 A 4. 3 March 2006 Distribution Monitoring Results......................................................... 39 A 4. 4 April 2006 Distribution Monitoring Results........................................................... 40 A 4. 5 May 2006 Distribution Monitoring Results............................................................ 41 A 4. 6 June 2006 Distribution Monitoring Results........................................................... 42 A 4. 7 July 2006 Distribution Monitoring Results............................................................. 43 A 4. 8 August 2006 Distribution Monitoring Results....................................................... 44 A 4. 9 September 2006 Distribution Monitoring Results ................................................. 45 A 4. 10 October 2006 Distribution Monitoring Results .................................................. 46 A 4. 11 November 2006 Distribution Monitoring Results .............................................. 47 A 4. 12 December 2006 Distribution Monitoring Results............................................... 48 A 5. 1 January 2005 Distribution Monitoring Results....................................................... 49 A 5. 2 February 2005 Distribution Monitoring Results..................................................... 50 A 5. 3 March 2005 Distribution Monitoring Results......................................................... 51 A 5. 4 April 2005 Distribution Monitoring Results.......................................................... 52 A 5. 5 May 2005 Distribution Monitoring Results............................................................ 53 A 5. 6 June 2005 Distribution Monitoring Results............................................................ 54 A 5. 7 July 2005 Distribution Monitoring Results............................................................. 55 A 5. 8 August 2005 Distribution Monitoring Results....................................................... 56 A 5. 9 September 2005 Distribution Monitoring Results ................................................. 57


-7-

A 5. 10 October 2005 Distribution Monitoring Results ..................................................... 58 A 5. 11 November 2005 Distribution Monitoring Results ................................................. 59 A 5. 12 December 2005 Distribution Monitoring Results.................................................. 60 Appendix B List of Performance Monitoring Results (CT Data) B 1. 1 January 2009 CT Monitoring Data ........................................................................... 1 B 1. 2 February 2009 CT Monitoring Data ......................................................................... 2 B 1. 3 March 2009 CT Monitoring Data ............................................................................. 3 B 1. 4 April 2009 CT Monitoring Data ............................................................................... 4 B 1. 5 May 2009 CT Monitoring Data ................................................................................ 5 B 1. 6 June 2009 CT Monitoring Data ................................................................................ 6 B 1. 7 July 2009 CT Monitoring Data ................................................................................. 7 B 1. 8 August 2009 CT Monitoring Data ............................................................................ 8 B 1. 9 September 2009 CT Monitoring Data....................................................................... 9 B 1. 10 October 2009 CT Monitoring Data......................................................................... 10 B 1. 11 November 2009 CT Monitoring Data..................................................................... 11 B 1. 12 December 2009 CT Monitoring Data ..................................................................... 12 B 2. 1 January 2008 CT Monitoring Data ......................................................................... 13 B 2. 2 February 2008 CT Monitoring Data ....................................................................... 14 B 2. 3 March 2008 CT Monitoring Data ........................................................................... 15 B 2. 4 April 2008 CT Monitoring Data ............................................................................. 16 B 2. 5 May 2008 CT Monitoring Data .............................................................................. 17 B 2. 6 June 2008 CT Monitoring Data .............................................................................. 18 B 2. 7 July 2008 CT Monitoring Data ............................................................................... 19 B 2. 8 August 2008 CT Monitoring Data .......................................................................... 20 B 2. 9 September 2008 CT Monitoring Data..................................................................... 21 B 2. 10 October 2008 CT Monitoring Data......................................................................... 22 B 2. 11 November 2008 CT Monitoring Data..................................................................... 23 B 2. 12 December 2008 CT Monitoring Data ..................................................................... 24 B 3. 1 January 2007 CT Monitoring Data ......................................................................... 25 B 3. 2 February 2007 CT Monitoring Data ....................................................................... 26 B 3. 3 March 2007 CT Monitoring Data ........................................................................... 27 B 3. 4 April 2007 CT Monitoring Data ............................................................................. 28 B 3. 5 May 2007 CT Monitoring Data .............................................................................. 29 B 3. 6 June 2007 CT Monitoring Data .............................................................................. 30 B 3. 7 July 2007 CT Monitoring Data ............................................................................... 31 B 3. 8 August 2007 CT Monitoring Data .......................................................................... 32 B 3. 9 September 2007 CT Monitoring Data.................................................................... 33 B 3. 10 October 2007 CT Monitoring Data........................................................................ 34 B 3. 11 November 2007 CT Monitoring Data.................................................................... 35 B 3. 12 December 2007 CT Monitoring Data .................................................................... 36


-8-

B 4. 1 January 2006 CT Monitoring Data ......................................................................... 37 B 4. 2 February 2006 CT Monitoring Data ....................................................................... 38 B 4. 3 March 2006 CT Monitoring Data ........................................................................... 39 B 4. 4 April 2006 CT Monitoring Data ............................................................................. 40 B 4. 5 May 2006 CT Monitoring Data .............................................................................. 41 B 4. 6 June 2006 CT Monitoring Data .............................................................................. 42 B 4. 7 July 2006 CT Monitoring Data ............................................................................... 43 B 4. 8 August 2006 CT Monitoring Data .......................................................................... 44 B 4. 9 September 2006 CT Monitoring Data..................................................................... 45 B 4. 10 October 2006 CT Monitoring Data......................................................................... 46 B 4. 11 November 2006 CT Monitoring Data..................................................................... 47 B 4. 12 December 2006 CT Monitoring Data .................................................................... 48 B 5. 1 January 2005 CT Monitoring Data ......................................................................... 49 B 5. 2 February 2005 CT Monitoring Data ....................................................................... 50 B 5. 3 March 2005 CT Monitoring Data ........................................................................... 51 B 5. 4 April 2005 CT Monitoring Data ............................................................................. 52 B 5. 5 May 2005 CT Monitoring Data .............................................................................. 53 B 5. 6 June 2005 CT Monitoring Data .............................................................................. 54 B 5. 7 July 2005 CT Monitoring Data ............................................................................... 55 B 5. 8 August 2005 CT Monitoring Data .......................................................................... 56 B 5. 9 September 2005 CT Monitoring Data..................................................................... 57 B 5. 10 October 2005 CT Monitoring Data........................................................................ 58 B 5. 11 November 2005 CT Monitoring Data.................................................................... 59 B 5. 12 December 2005 CT Monitoring Data .................................................................... 60 Appendix C List of External Lab Results C. 1 External Lab Data 2004-2008 (sorted alphabetically by parameter) ............................... 1 Appendix D List of Internal Lab Results D 1. 1 Penticton Creek Internal Lab Data 2009................................................................... 1 D 1. 2 Penticton Creek Internal Lab Data 2008................................................................... 1 D 1. 3 Penticton Creek Internal Lab Data 2007................................................................. 11 D 1. 4 Penticton Creek Internal Lab Data 2006................................................................. 21 D 1. 5 Penticton Creek Internal Lab Data 2005................................................................. 33 D 2. 1 Okanagan Lake Internal Lab Data 2009 ................................................................. 45 D 2. 2 Okanagan Lake Internal Lab Data 2008 ................................................................. 57 D 2. 3 Okanagan Lake Internal Lab Data 2007 ................................................................. 70 D 2. 4 Okanagan Lake Internal Lab Data 2006 ................................................................. 83 D 2. 5 Okanagan Lake Internal Lab Data 2005 ................................................................. 95 D 3. 1 Blended Raw Water Internal Lab Data 2009........................................................ 107 D 3. 2 Blended Raw Water Internal Lab Data 2008........................................................ 118


-9-

D 3. 3 Blended Raw Water Internal Lab Data 2007........................................................ 130 D 3. 4 Blended Raw Water Internal Lab Data 2006........................................................ 142 D 3. 5 Blended Raw Water Internal Lab Data 2005........................................................ 154 D 4. 1 Chemical Dosage Data 2009................................................................................. 166 D 4. 2 Chemical Dosage Data 2008................................................................................. 177 D 4. 3 Chemical Dosage Data 2007................................................................................. 189 D 4. 4 Chemical Dosage Data 2006................................................................................. 201 D 4. 5 Chemical Dosage Data 2005................................................................................. 214 D 5. 1 Backwash Pond Internal Lab Data 2009............................................................... 226 D 5. 2 Backwash Pond Internal Lab Data 2008............................................................... 237 D 5. 3 Backwash Pond Internal Lab Data 2007............................................................... 250 D 5. 4 Backwash Pond Internal Lab Data 2006............................................................... 263 D 5. 5 Backwash Pond Internal Lab Data 2005............................................................... 276 D 6. 1 Distribution Water Internal Lab Data 2009 .......................................................... 288 D 6. 2 Distribution Water Internal Lab Data 2008 .......................................................... 299 D 6. 3 Distribution Water Internal Lab Data 2007 .......................................................... 312 D 6. 4 Distribution Water Internal Lab Data 2006 .......................................................... 325 D 6. 5 Distribution Water Internal Lab Data 2005 .......................................................... 338 Appendix E Discharge Monitoring Penticton Creek E 1. 1 Ministry of Water, Land and Air Protection Permit PE-13491 ............................... 1 E 2. 1 Discharge Permit PE-13491 Data Summary 2009.................................................... 9 E 2. 2 Discharge Permit PE-13491 Data Summary 2008.................................................. 10 E 2. 3 Discharge Permit PE-13491 Data Summary 2007.................................................. 11 E 2. 4 Discharge Permit PE-13491 Data Summary 2006.................................................. 12 E 2. 5 Discharge Permit PE-13491 Data Summary 2005.................................................. 13 E 3. 1 January 2009 Discharge Monitoring....................................................................... 14 E 3. 2 February 2009 Discharge Monitoring..................................................................... 15 E 3. 3 March 2009 Discharge Monitoring......................................................................... 16 E 3. 4 April 2009 Discharge Monitoring........................................................................... 17 E 3. 5 May 2009 Discharge Monitoring............................................................................ 18 E 3. 6 June 2009 Discharge Monitoring............................................................................ 19 E 3. 7 July 2009 Discharge Monitoring ............................................................................ 20 E 3. 8 August 2009 Discharge Monitoring........................................................................ 21 E 3. 9 September 2009 Discharge Monitoring .................................................................. 22 E 3. 10 October 2009 Discharge Monitoring ...................................................................... 23 E 3. 11 November 2009 Discharge Monitoring .................................................................. 24 E 3. 12 December 2009 Discharge Monitoring................................................................... 25


-10-

E 4. 1 January 2008 Discharge Monitoring....................................................................... 26 E 4. 2 February 2008 Discharge Monitoring..................................................................... 27 E 4. 3 March 2008 Discharge Monitoring......................................................................... 28 E 4. 4 April 2008 Discharge Monitoring........................................................................... 29 E 4. 5 May 2008 Discharge Monitoring............................................................................ 30 E 4. 6 June 2008 Discharge Monitoring............................................................................ 31 E 4. 7 July 2008 Discharge Monitoring ............................................................................ 32 E 4. 8 August 2008 Discharge Monitoring........................................................................ 33 E 4. 9 September 2008 Discharge Monitoring .................................................................. 34 E 4. 10 October 2008 Discharge Monitoring ...................................................................... 35 E 4. 11 November 2008 Discharge Monitoring .................................................................. 36 E 4. 12 December 2008 Discharge Monitoring................................................................... 37 E 5. 1 January 2007 Discharge Monitoring....................................................................... 38 E 5. 2 February 2007 Discharge Monitoring..................................................................... 39 E 5. 3 March 2007 Discharge Monitoring......................................................................... 40 E 5. 4 April 2007 Discharge Monitoring........................................................................... 41 E 5. 5 May 2007 Discharge Monitoring............................................................................ 42 E 5. 6 June 2007 Discharge Monitoring............................................................................ 43 E 5. 7 July 2007 Discharge Monitoring ........................................................................... 44 E 5. 8 August 2007 Discharge Monitoring........................................................................ 45 E 5. 9 September 2007 Discharge Monitoring .................................................................. 46 E 5. 10 October 2007 Discharge Monitoring ...................................................................... 47 E 5. 11 November 2007 Discharge Monitoring .................................................................. 48 E 5. 12 December 2007 Discharge Monitoring.................................................................. 49 E 6. 1 January 2006 Discharge Monitoring....................................................................... 50 E 6. 2 February 2006 Discharge Monitoring..................................................................... 51 E 6. 3 March 2006 Discharge Monitoring......................................................................... 52 E 6. 4 Arpil 2006 Discharge Monitoring........................................................................... 53 E 6. 5 May 2006 Discharge Monitoring........................................................................... 54 E 6. 6 June 2006 Discharge Monitoring............................................................................ 55 E 6. 7 July 2006 Discharge Monitoring ............................................................................ 56 E 6. 8 August 2006 Discharge Monitoring........................................................................ 57 E 6. 9 September 2006 Discharge Monitoring .................................................................. 58 E 6. 10 October 2006 Discharge Monitoring ...................................................................... 59 E 6. 11 November 2006 Discharge Monitoring ................................................................. 60 E 6. 12 December 2006 Discharge Monitoring.................................................................. 61 E 7. 1 January 2005 Discharge Monitoring....................................................................... 62 E 7. 2 February 2005 Discharge Monitoring..................................................................... 63


-11-

E 7. 3 March 2005 Discharge Monitoring......................................................................... 64 E 7. 4 April 2005 Discharge Monitoring.......................................................................... 65 E 7. 5 May 2005 Discharge Monitoring............................................................................ 66 E 7. 6 June 2005 Discharge Monitoring............................................................................ 67 E 7. 7 July 2005 Discharge Monitoring ............................................................................ 68 E 7. 8 August 2005 Discharge Monitoring........................................................................ 69 E 7. 9 September 2005 Discharge Monitoring .................................................................. 70 E 7. 10 October 2005 Discharge Monitoring ...................................................................... 71 E 7. 11 November 2005 Discharge Monitoring .................................................................. 72 E 7. 12 December 2005 Discharge Monitoring................................................................... 73


-12-

1. Water Treatment History In 1986 the City of Penticton experienced an outbreak of Giardiasis (Beaver fever) from the Penticton Creek water source, with more than 300 confirmed cases. The City discontinued use of the Penticton Creek source and was able to temporarily satisfy demand from Okanagan Lake and the Warren Avenue well. Following the outbreak, the City began preliminary engineering studies to evaluate water treatment alternatives. A dual source (Okanagan Lake and Penticton Creek) water filtration plant was chosen. Before the implementation of the water treatment plant, chlorination was the only means of treatment. Pentictons water treatment plant uses a multiple barrier treatment system, consisting of coagulation, flocculation, clarification, filtration, and disinfection. This treatment provides protection against Giardia lamblia, Cryptosporidium, water borne bacteria, and viruses.

2. Water Supply System Pentictons water supply system was initially designed in the 1920s to use water from Penticton Creek. Okanagan Lake water was pumped into the system during the spring freshet due to high colour and turbidity in the creek water. After an outbreak of Giardiasis in 1986, the City realized that additional treatment would be required. The current water treatment facility is the result. Water is supplied to the treatment plant from two sources Penticton Creek, through a gravity system, and Okanagan Lake, by means of pumps and a new dedicated water main. The City water distribution system has five storage reservoirs, 160 kilometers of water mains, 900 hydrants, and 9000 service connections serving a population of 35,000 people 2. 1 Penticton Creek Penticton Creek originates from Greyback Mountain Dam approximately 10 km east of Penticton at an elevation of 1649 meters. Many small tributaries and creeks also feed Penticton Creek, which allows water to be used at times without depleting storage. The City of Penticton maintains Greyback Lake and Dam, which has a maximum storage volume of 10,000-acre feet, or 12.3 million cubic meters. The dam was built in 1967 under the A.R.D.A. (Agricultural Rural Development Act) program. Untreated water is diverted from Penticton Creek at the Campbell Mountain Diversion for agricultural irrigation. Penticton Creek continues west towards the Water Treatment Plant where there is a dam, small reservoir and intake located just east of the plant. Without the untreated Penticton Creek irrigation system, the Water Treatment Plant would have been twice the capacity and more costly to construct. This feature has served the citizens of Penticton well. 2. 2 Contamination of Penticton Creek or Greyback Mountain Reservoir The Greyback Mountain Reservoir watershed covers a vast area with the principle activities within the watershed being logging and cattle grazing. One of the more serious contamination issues would be a large fuel spill within the immediate area of the reservoir or its discharge. Other items of concern would be willful contamination by an individual or


-13-

group of individuals. The City of Penticton has written emergency response procedures for contamination issues within the Penticton Creek watershed. 2. 3 Okanagan Lake Okanagan Lake is situated in south central British Columbia. It has a catchment area of over 6,000 km2 and is the largest of the five main and interconnected lakes in the Okanagan valley. The Okanagan valley is U-shaped with mountains rising on both sides to 1,000-2,500 m. Okanagan Lake in general is a deep, nutrient deficient water body with two shallower reaches with poorer water circulation, higher nutrient levels, and greater plankton abundance. The lake in profile is composed of three basins, a large north basin, a mid basin and a southern basin. It is joined to Kalamalka Lake in the north by Vernon Creek, and at the south end to Skaha Lake by the Okanagan River. This river flows south through Skaha Lake, Vaseaux Lake and Osoyoos Lake; it joins the Columbia River near Brewster, Washington. Three major population centres are located along lake Okanagan shores: Vernon at the north end, Kelowna at the mid point and Penticton at the south end (Pentictons sewage effluent is discharged to the outflow of Okanagan Lake). The major industrial development in the valley is associated with agriculture and forestry. Tourism is also a major economic factor in the local economy. These facts coupled with the arid nature of the region have resulted in a very high economic value being given to water quality and quantity.

Figure 1 Okanagan Lake Water Shed Schematic


-14-

2. 4 Contamination of Okanagan Lake Source Due to the size of the water body and the depth of the intake it would be very difficult to determine if a contamination issue could actually work its way into the intake pipe. If contamination was to occur it would probably be the result of an incident within the pump station or a failure in the dedicated main between the pump station and the treatment plant. If a severe contamination of the lake were to occur, the emergency response plan would be activated. This plan outlines the procedure for operating the pump station in a wasting mode such that no water would be drawn into the treatment plant, but was recycled back to the lake. This would allow for raw lake water to be sampled over a lengthy period of time. 2. 5 Warren Avenue Well Warren Avenue Well was installed by the City of Penticton in 1982, and is 92.9 m (304.5 ft) deep, completed in a confined and flowing artesian aquifer encountered at a depth between 52.1 and 87.5 m (171 and 287 ft). At present this source of water is used strictly as an emergency source and has not been called into use since 1995. 2. 6 Contamination Issues for Warren Avenue Well One of the conditions to operate a water system issued by the Interior Health Authority is to conduct an extensive study on all ground source waters. In the spring of 2004 the City of Penticton contracted Pacific Hydrology Consultants Ltd. to prepare a well head protection plan for the Warren Avenue Well. Activities that pose a potential threat to the well and aquifer are: Commercial and Industrial fuel storage, Agriculture irrigation practices in regard to fertilizer and pesticides and Transportation Corridors in particular fuel spill events and road salt. The consultant has determined that the well aquifer is at very low risk due to depth and the fact that the aquifer is a flowing artesian aquifer. Pacific Hydrology Consultants have recommended that the City conduct a survey of high hazard operations in the upstream area of the Warren Avenue Well. The Water Treatment Staff will acquire this data if the Warren Avenue Well is considered for active use.

3. Water Conservation The Water Conservation Initiative took effect in the spring of 2004 with the purpose of reducing Peak Day Demand from a high of 53 ML/day (2003). Presently, the program focuses on increasing the value of water by providing financial and environmental solutions to the commercial sector. As for the residential sector the program focuses on water restriction education and compliance as well as water audits. Commercial and residential water audits were funded thru OBWB grant of $9500. Demand has a direct impact on existing water and wastewater infrastructure as well as community planning, For example, Peak Day has been the primary indicator for the success of the water conservation program due to the semi arid cliimate. A secondary indicator, Annual Day Demand has been used as a gauge on behaviour changes in our growing community, as a measure of the overall impact education has on reducing water waste,.


-15-

Peak Day Demand corresponds to the highest volume of water treated at the Water Treatment Plant over a 24 hour period. And this year, Peak Day Demand dropped from 43ML (2008) to 41 ML. Average Annual Day Demand remains steady from last year with slight fluctuations 20.2 ML to 20.6 ML in 2009. Again, trends are emerging indicating externalities nominally impact the reported consumption data and that more importantly behaviours are beginning to change towards an increase in the value of water. Average Daily Demand per person increased slightly from 581 litres per capita per day (2008) to 589 Lpcd. Please note, since 2008 per capita demand was tabulated using most recent BCStats population figure of 35 000. In previous years, a Statcan population of 33 000 was used to tabulate per capita consumption. And finally, the 2009/2008 annual demand decreased by 9 ML for a total demand of 7410 ML. 1. Expand Water Smart Initiative Purpose - to develop and implement demand management initiatives aimed at benefiting residential and small business water users. Status - Recruit, train and supervise two local students to perform audits and educate the

community on water restrictions Perform free automatic irrigation reprogramming service as well as assistance in

identifying over watered zones No water restriction fines served to residents or businesses.

2. School Presentations Purpose to promote conservation to the younger generation Status

Focus on where our water comes from, the costs and processes required to provide safe drinking water and the importance of turning off the tap

Create activities to engage students as well as adhere to prescribed learning outcomes

2010 Water Conservation Goal and Objectives

1. Acquire funding to hire two students to provide Commercial Water/Energy Audits Purpose Ambassadors perform water, electricity, gas and solid waste audits to small and medium sized businesses. Outside funding sourcing including grants are required to support the entire program.


-16-

2. Reduce Peak Day Demand and Average Daily Demand.

Purpose minimize the implication of our growing community on water resources. Effectively develop programs which aim at reducing Peak Day Demand and Average Daily Demand.

3. Update Water Conservation Webpage Purpose provide relevant solutions to reducing water waste as well as timely information on water consumption in order to promote the cause and effect of turning off the tap. Every drop counts!

4. Review Irrigation, Sewer and Water Bylaw Purpose continue to focus on the update of the water conservation section for relevance.

4. Cross Connection Control A cross connection refers to any actual or potential physical connection between a potable water line and any pipe, vessel or machine containing or possibly containing a non potable fluid, gas or solid, such that it is possible for the contaminant to enter the water system by backflow. The City of Pentictons Cross Connection Control Program administers 1246 testable assemblies, of which 124 were new installations. These testable assemblies refer to Double Check Valve Assemblies and Reduced Pressure Backflow Assemblies isolating moderate and high hazards. Of the 1179 test reports received, 60 assemblies failed. Since only seven failed assemblies were recorded in 2008, the jump in failed assemblies may indeed be associated with an increase in accurate reporting of failed test reports. A secondary component of the Cross Connection Control Program entailed performing site surveys which identified actual or potential cross connections and their remedies. In some cases, the solution incorporated a non testable device such as a Hose Bib Vacuum Breaker, an approved air gap or the elimination of the backflow hazard altogether. And in other circumstances, testable assemblies isolated the hazard. These measures are in place as a means of providing safe drinking water and meeting one of the City of Pentictons conditions on the Permit to Operate 1. Administer Cross Connection Control Program

Purpose to ensure testable backflow prevention assemblies passed their yearly required test and inform facility owners of upcoming required assembly testing. - Enforce survey requirements and deadlines - Inspect backflow preventer installations for CSA B64 compliance


-17-

2. Perform Surveys Purpose to ensure safe drinking water thru the prevention of backflow incidents by installing backflow prevention assemblies or other measures as required and/or determined through surveys. The focus of the surveys identify premises, zone and fixture isolation. Status Surveyed severe and moderate hazards for potential or actual cross connections Reviewed mechanical drawings for hazards and assembly requirements Provided survey report with requirements to be implemented within six months

according to BCBC Part 7, Bylaw 2005-02 and/or CSA B64.10/B128, as applicable. 2010 Cross Connection Goal and Objectives

1. Continue to Address Severe and High Hazards Purpose continue to survey severe and high hazards in order to ensure safe drinking water. Primary focus of education to facility owners will ensure compliance.

2. Update Cross Connection Webpage Purpose to become an industry leader in providing timely and relevant information to facility owners such as solutions to ensuring backflow does not occur.

3. Review Irrigation, Sewer and Water Bylaw Purpose to recommend amendments which are in line with the most recent CSA B64, Selection and Installation of Backflow Preventers to incorporate non potable water backflow prevention standards in line with the most recent CSA B128, Design and Installation of Non-potable Water Systems

4. Remain Current on regulations, acts and other relevant industry requirements

Purpose industry innovation occurs promptly when linked to government incentives and as such, participation in industry technical meetings ensures backflow prevention remains at the forefront.


-18-

5. Water Treatment The water treatment plant uses a multiple barrier treatment system consisting of coagulation, flocculation, clarification, filtration, and disinfection. Deep bed mono-media filters are one of the first installations of this type of filter in Canada. The plant has been designed to treat highly coloured Penticton Creek as well as low turbidity Okanagan Lake. Dual water sources provide the City of Penticton with an excellent supply, capacity, operational flexibility and power savings when using the gravity flow from the Penticton Creek supply. Modern control and instrumentation systems are used to monitor treatment plant operations. The latest supervisory and data acquisition system allows City staff to monitor remote water supply facilities from the water treatment plant. Backup systems are in place to deal with equipment or power failure. In 2009 the City of Penticton upgraded the Water Treatment Plant to increase capacity of the treatment plant. The inclined plate sedimentation process was upgraded to high rate dissolved air flotation (DAF). This process will allow the City to use Penticton Creek during the peak demand periods.

Figure 2 DAF Basin Photo


-19-

5. 1 Plant Profile

TOTAL OKANAGAN LAKE PENTICTON CREEK

Nominal Plant Capacity 100 ML/d 50 ML/d 50 ML/d

Process Capacity 100 ML/d 50ML/d 50 ML/d

Hydraulic Capacity 100 ML/d 50 ML/d 50 ML/d

PROCESS COMPONENTS

Flash/Rapid Mixing: Number of Units Volume (m3) Dimensions (m) Flash G Value (sec-1) (2

speed) Rapid G Value (sec-1) (2

speed)

4

31.5 - - -

2

15.75 1.5 x 1.6 x 2.8

1000/500 700/350

2

15.75 1.5 x 106 x 2.8

1000/500 700/350

Flocculation: Number of Tanks Volume (m3) Dimensions (m) Mixer G Value (sec-1)

2

1350 - -

1 (3 stages)

675 14.9 x 10 x 4.5

80/50/30

1 (3 stages)

675 14.9 x 10 x 4.5

80/50/30

Clarification (High Rate DAF): Number of Tanks Volume (m3)

2

950

Filters: Number of Filters Filtration Rate (m/h) Size (m x m) Filter Box Depth (m) Media Depth (m) Media / Size

6 - - - - -

2

15.3 4.5 x 10

5.8 1.83

Anthracite-1.4mm E.S.,1.5 U.C.

4

7.6 4.5 x 10

5.8 1.83

Anthracite-1.4mm E.S.,1.5 U.C.

Clearwell: Number of Cells Volume (m3)

4

8550

- -

- -

Filter Backwash: Backwash Water Rate

(m/hr) Air Scour Rate (m3/min) Backwash Settling

Basin (m3)

27-54

46 1056

27-54

46 -

27-54

46 -

Table 1 Plant Profile


-20-

Figure 3 Penticton Water Treatment Plant Schematic


-21-

5. 2 Process Description 1. Intake Large objects such as logs and plants are screened out as the water is drawn to the treatment plant from Penticton Creek or Okanagan Lake. Penticton Creek water is fed to the treatment plant by gravity from a reservoir behind the treatment plant. Okanagan Lake water is pumped to the treatment plant from the lakeshore pump station. 2. Mixing The water arrives at the treatment plant into the rapid mixing tanks, where coagulants (chemicals that cause fine particles to clump together, forming floc) are added. This mixing disperses the coagulants throughout the water and starts the coagulation process. 3. Coagulation & Flocculation Water passes through the flocculation tanks where it is gently mixed. Tapered energy mixing is employed in the flocculation process. The particles will come in contact with each other and form larger floc. It is in this stage of the process that the majority of your impurities and harmful bacteria are captured within the floc particles and will later be captured in the DAF float or the filters. Month Total Q Chlorine SO2 PAC Floc Aid Filter Aid2009 Mega Liters Kg. Kg. Kg. Kg. Kg.January 405.1 808 22.8 3863.1 810.2 9.3February 366.1 740 12.4 3790.0 697.0 7.6March 406.9 915 18.4 3497.0 655.0 7.7April 489.8 1114 21.4 4086.0 784.0 9.3May 816.8 1874 38.0 6373.0 1307.0 15.7June 1059.7 2385 64.6 6521.7 1635.0 19.7July 1103.5 2493 61.2 9171.0 1655.0 20.0August 1004.9 2325 43.8 8416.0 1507.0 34.6September 766.5 1712 22.2 15039.0 1390.0 23.4October 495.6 1325 33.4 4300.0 892.0 12.1November 369.8 940 16.0 3325.0 666.0 9.2December 382.9 951 32.4 3451.0 685.0 9.6Monthly Avg. 638.97 1465.17 32.22 5986.07 1056.94 14.85Total 7667.6 17582 386.6 71832.8 12683.22 178.21Yearly Avg. mg/L 2.3 9.4 1.7 0.023

Table 2 Chemical Usage 2009

Poly aluminum chloride, floc aid and filter aid weights are calculated using an average of the lake and creek dosages when separate water sources are being treated.

Average chlorine dosage for the year 2.30 mg/L


-22-

Average poly-aluminum chloride dosage for the year 9.4 mg/L Average floc aid polymer dosage for the year 1.7 mg/L Average filter aid polymer dosage for the year 0.023 mg/L 4. Dissolved Air Floatation The water enters the dissolve air flotation basin where a saturated dissolved air/water stream is mixed with the process steam allowing the floc particles that have formed in the previous process to rise. The float rises to the top of the basin removing impurities from the water. This float is processed by the onsite centrifuge. The water then proceeds to the filtration stage. 5. Filtration Deep bed, mono medium filters are utilized at the Penticton Water Treatment Plant and are one of the first installations in Canada. The filter material used is anthracite coal at a depth of 1.8 meters. As the water passes through the filter, impurities are removed. Number of filter washes required is directly related to the amount of water processed through the filter and its quality. Filter backwashes are regulated by three different factors. They are; time that filter has been online, turbidity or particle counts and headloss. As the graph indicates the number of filter washes increases dramatically in months of July and August. This is related to temperature and reduced rainfall.

Figure 4 Monthly Filter Washes Graph 2009

01020304050607080

Janu

ary

Febru

aryMa

rch April

May

June Ju

ly

Augu

st

Septe

mber

Octob

er

Nove

mber

Dece

mber


-23-

Total Q # Filters Avg. Q / Wash Wash Water Wash Q / Total Q2009 Mega Liters Washed Mega Liters Mega Liters Percentage

January 405.1 33 12.28 9.90 2.44%February 366.1 27 13.56 8.10 2.21%

March 406.9 27 15.07 8.10 1.99%April 489.8 29 16.89 8.70 1.78%May 816.8 56 14.59 16.80 2.06%June 1059.7 94 11.27 28.20 2.66%July 1103.5 87 12.68 26.10 2.37%

August 1004.9 69 14.56 20.70 2.06%September 766.5 36 21.29 10.80 1.41%

October 495.6 39 12.71 11.70 2.36%November 369.8 23 16.08 6.90 1.87%December 382.9 31 12.35 9.30 2.43%Average 638.97 45.92 14.44 13.78 2.14%

Total 7667.6 551 165.3 6. Disinfection Once impurities have been removed from the water, chlorine is added as a disinfectant. This ensures that the water is safe and prevents bacteria from developing as it travels from the treatment plant to the customer. The water treatment plant has five chlorinators that can inject chlorine at the pre treatment stage, pre filtration stage, post filtration stage, pre clearwell or post clearwell. Chlorine dosage includes approximately 0.5 0.7 mg/L pre chlorine dosage.

Table 3 Chlorine and Sulphur Dioxide dosages 2009

Month Total Q Chlorine SO2 Cl dose Dist. C/W2009 Mega Liters Kg. Kg. mg/L Residual mg/lJanuary 405.1 808 22.8 1.99 1.10February 366.1 740 12.4 2.02 1.10March 406.9 915 18.4 2.25 1.10April 489.8 1114 21.4 2.27 1.10May 816.8 1874 38.0 2.29 1.10June 1059.7 2385 64.6 2.25 1.10July 1103.5 2493 61.2 2.26 1.00August 1004.9 2325 43.8 2.31 1.10September 766.5 1712 22.2 2.23 1.10October 495.6 1325 33.4 2.67 1.10November 369.8 940 16.0 2.54 1.10December 382.9 951 32.4 2.48 1.10Average 638.97 1465.17 32.2 2.30 1.09Total 7667.6 17582 386.6


-24-

7. Distribution The finished water is stored at the plant in a large reservoir called a clear well, and throughout the City in five additional storage reservoirs. There are approximately 160 kilometers of water mains, more than 900 fire hydrants and 9000 service connections serving a population of 35,000 people. Staff routinely samples locations within the distribution system to ensure that the water meets all standards and is safe to drink. The City of Penticton performed 427 bacteriological tests within the distribution system during 2009. 5. 3 Water Use License The City of Penticton holds water licenses for Penticton Creek, Ellis Creek and Okanagan Lake water sources for the purpose of Waterworks Local Authority. Total yearly capacity of these licences total 34,752 ML. These licenses are renewed each year and reviewed by the Water Stewardship Division within the Ministry of Environment. Penticton Creek (license C014229), (licence C005729), and Okanagan Lake (license C116809), (C116810), (C116811) are issued for local authorized water works. 5. 4 Penticton Creek Water License (Waterworks Local Authority) The City of Penticton is licensed to draw 1,460,000,000 imperial gallons per year from Penticton Creek and its subsidiaries for the purpose of Local Authorized Water Works. This license dates to 1892. In 2009 the City of Penticton drew 56,422,086 imperial gallons (256.5 mega liters) from Penticton Creek for its domestic water use. Penticton Creek withdrawl is considerably less in 2009 due to upgrades to the water treatment plant. 5. 5 Okanagan Lake Water License (Waterworks Local Authority) The City of Penticton is licensed to draw 2,737,500,000 imperial gallons per year from Okanagan Lake and its subsidiaries for the purpose of Local Authorized Water Works. Water licenses date back to the early 1900s for domestic use. In 2009 the City of Penticton pumped 1,630,148,105 imperial gallons (7410.8 mega liters) from Okanagan Lake for its domestic water use. 5. 6 Capital and Improvement Projects Completed in 2009

1. Hydrant maintenance program

2. Installation of 15 new hydrants yearly to improve coverage.

3. Upgrade water meters to radio frequency technology.

4. Dam stability and geotech analysis.

5. Upgrade large water meters.

6. Implement new meter reading software.

7. Campbell Mountain tunnel inspection and reservoir cleaning.


-25-

8. Greyback Dam spillway improvements to Dam Safety Guidelines.

9. Water Plant Capacity Upgrade.

a. High Rate Dissolved Air Flotation b. Residuals Handling process improvments c. Increased onsite clearwell storage d. Pump station and pipeline to Ridgedale Reservoir

10. Ridgedale Booster Station and pipeline.

11. Branford PRV upgrade.

12. Water service upgrades

5. 7 Anticipated Capital and Improvement Projects for 2010

1. Hydrant maintenance program

2. Installation of 15 new hydrants yearly to improve coverage.

3. Upgrade water meters to radio frequency technology. 4. Upgrade large water meters.

5. Filter audit at the water treatment plant.

6. Water Treatment Plant Optimization

7. Annual small water upgrade projects

8. Numerous upgrades to distribution piping.

9. New reservoir to service 2020 zone.

10. Additional pump capacity at the Ridgedale Reservoir to service the

6. Water Distribution Pentictons water distribution system consists of the Water Treatment Plant clearwell and five reservoirs that are strategically located at different locations within the city boundaries. These reservoirs establish different pressure zones to service a particular area of the distribution system. The reservoirs are filled during periods of decreased water usage and are


-26-

used to buffer the system when water demands are high. Total reservoir capacity excluding the treatment plant clearwell is 12.22 mega liters. All reservoirs are remotely controlled via the SCADA system located at the Water Treatment Plant. Connected to these reservoirs are 160 km of distribution water mains, 900 fire hydrants and approximately 9000 water service connections. Figure 4 illustrates the water distribution system, and figures 5 13 show the pump stations and reservoirs. 6.1 Water system pressure zones: 1420 zone. The supply reservoir for this zone is the Duncan Avenue Reservoir, which

has a capacity of 5.9 mega liters in addition to the Water Treatment Plant clearwell. Water to fill this reservoir originates at the Treatment Plant and is controlled via automatic valve located near the reservoir. This zone supplies the lower areas of Penticton.

1620 zone. The supply reservoir for this zone is the Evergreen Reservoir, which has a capacity of 2.3 mega liters. This zone supplies the southern middle bench lands of Penticton. Water to fill this reservoir is gravity fed from the 1650 Ridgedale Reservoir via an automatic control valve.

1650 zone. The supply for this zone is the Ridgedale Reservoir, which has a capacity of 2.35 mega liters. Water for this reservoir is pumped from the 1420 Duncan Avenue Reservoir. This zone supplies the middle bench lands of Penticton.

1820 zone. The supply for this zone is the Carmi and Gordon Avenue Reservoirs, which have a capacity of 1.135 and 0.53 mega liters respectively. This zone supplies the upper level areas of Penticton and is aided by the addition of two pumping stations, one supplied by the Carmi Reservoir and the other supplied by the Gordon Avenue Reservoir. Water to fill these reservoirs is supplied by pumps located at the 1650 Ridgedale Reservoir.


-27-

Figure 5 Distribution Schematic Insert drawing here. 11 x 17


-28-

Figure 6 Duncan Avenue Reservoir Photo


-29-

Figure 7 Ridgedale Reservoir Photo


-30-

Figure 8 Carmi Reservoir Photo


-31-

Figure 9 Carmi Booster Station Photo


-32-

Figure 10 Evergreen Reservoir Photo


-33-

Figure 11 Gordon Avenue Reservoir Photo


-34-

Figure 12 Gordon Avenue Booster Station Photo


-35-

Figure 13 Lake Pump Station Photo


-36-

Figure 14 Ellis Creek Monitoring Installation Photo


-37-

Figure 15 Water Plant Capacity Upgrade Photos


-38-

7. Water Usage Monitoring The volume of water pumped from the Okanagan Lake Pump Station and Penticton Creek is continuously monitored by flow meters located at the Water Treatment Plant. Treated plant discharge water into the distribution system is also continuously monitored to determine peak days and unusual usage. Over the past ten years the City of Pentictons water usage has remained fairly consistent. The population of Penticton has continued to grow over these years and consumption has risen moderately. This would indicate that the citizens of Penticton are practicing water conservation. In 2009, total intake from all water sources was 7667 mega liters.

Figure 16 Total Water Usage 2000-2009 Graph In 2005 the City awarded a contract to Earth Tech Engineering Consultants to review the current water system and address any anticipated issues likely to arise over the next 5-year, 10-year and 15-year terms. A preliminary recommendation of this study was that Penticton

0100020003000400050006000700080009000

Meg

a Li

ters

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009


-39-

Creek could be used as an alternate summer peak demand water source. Pilot studies were completed in the fall of 2007 and a high rate dissolved aeration process was identified as the preferred option to meet increased summer demands. Final design was completed in early 2008 with construction began in the fall of 2008. The project was completed in November 2009.

Figure 17 Water Sources 2000 -2009 Graph In January of 1997 the City placed its new water treatment facility online and the Penticton Creek source was returned to service. Since 1997 the City has used only Okanagan Lake and Penticton Creek for its domestic water usage. As the graph indicates the two sources are used in variable proportions from year to year. This difference is determined by source water quality, quantity and plant operational considerations. The Warren Avenue well has been removed from service and is now a dedicated emergency water source.

0

1000

2000

3000

4000

5000

6000

7000

8000

Meg

a Li

ters

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

Lake Creek Warren Ave Well


-40-

Figure 18 Average Daily Demand per Capita 1996-2007 Graph (2000-2009 pop 35,000)

Year Population Avg. Daily Demand Liters/d/Capita

Avg. Canadian Daily Demand

Liters/d/Capita 2000 32,000 683 2001 32,000 661 335 2002 32,000 725 2003 33,000 703 2004 33,000 645 343 2005 33,000 684 343 2006 33,825 629 343 2007 35,000 612 343 2008 35,000 579 343 2009 35,000 589 343

0

100

200

300

400

500

600

700

800

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009Avg. Daily Demand / Capita Canadian Avg. Daily Demand / Capita

Linear (Canadian Avg. Daily Demand / Capita)


-41-

Figure 19 Maximum Daily Demand per Capita 2000-2009 Graph

Year Population Max. Daily Demand Liters/d/Capita

2000 32,000 1636 2001 32,000 1613 2002 32,000 1531 2003 33,000 1650 2004 33,000 1441 2005 33,000 1429 2006 33,825 1340 2007 35,000 1248 2008 35,000 1224 2009 35,000 1176

0200400600800

10001200140016001800

Lite

rs/d

/cap

ita

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009


-42-

7.1 Source Water and Consumption 2009 Month Penticton Warren Okanagan Total Distribution2009 Creek Well Lake Intake

ML ML ML ML MLJanuary 0 0 405.1 405.1 401.3February 0 0 366.1 366.1 365.2March 0 0 406.9 406.9 407.4April 0 0 489.8 489.8 482.5May 0 0 816.8 816.8 802.6June 0 0 1059.7 1059.7 1028.4July 0 0 1103.5 1103.5 1072.4August 0 0 1004.9 1004.9 979.7September 256.5 0 510 766.5 754.1October 0 0 495.6 495.6 488.8November 0 0 369.8 369.8 368December 0 0 382.9 382.9 377.3

Total ML 256.5 0 7411.1 7667.6 7527.7Total Imp Gal. 56,423,228 0 1,630,246,347 1,686,669,575 1,655,895,269Monthly Avg. ML 21.4 0 617.6 639.0 627.3Monthly Avg. Igal. 4,701,936 0 135,853,862 140,555,798 137,991,272Daily Avg. ML 0.703 0 20.30 21.01 20.62Daily Avg. Igal. 154,584 0 4,466,428 4,621,013 4,536,699

Max Daily Distribution Flow for 2009 41.17 ML July 23, 20099,056,313 Imp Gal1176.29 l/c/d

Min Daily Distribution Flow for 2009 10.96 ML Dec 26, 20092,410,911 Imp Gal

Percentage of total derived from creek source. 3.35%Percentage of total derived from lake source. 96.65%

Table 4 Source Water 2009


-43-

8. Water Quality Monitoring Distribution Bacteriological Monitoring Staff at the Water Treatment Plant collects a minimum of thirty bacteriological samples from various locations within the distribution system monthly. Locations are chosen to cover high-risk locations such as schools and shopping centers and areas of low use and little turnover. Bacteriological samples, are also collected when staff attends to complaints by citizens. This accounts for some of the test locations where only one sample was collected. 427 samples from the distribution system were tested for E.Coli and Total Coliform in 2009. There was no Coliform detected in any of the samples collected. Biological tests were collected from 59 different locations within the city distribution boundaries. Fourteen of these locations accounted for the majority of samples collected with 10 or more samples collected at each of these locations. Besides bacteriological testing of each sample collected, chlorine residual, pH, temperature and turbidity are also tested on each sample. Analyzing these other parameters is a method of early detection of problems that may arise in the future. Table 5 and Appendix A list monitoring locations and the results of distribution monitoring.


-44-

Water Treatment External Sampling Schedule for 2009

Month Dissolved

Al THM's HHA's CN-

Full WQ Scan TOC

Pesticide Scan

Quality Control Replicate Samples

January Dissolved Al, Pond / TOC Penticton Creek & Okanagan Lk.

May

Dissolved Al Upstream / THM's Smythe Dr. and Randolph Rd. chlorination station

July THM's, TOC's, Full WQ Scan on PRV and pesticide scan

October

Dissolved Al, Downstream / CN- Warren Ave. Well & Okanagan Lk.

Dissolved Aluminum sampling for PE 13491 permit. 4 sites x 4 months = 16 samples/year

125 mL poly bottles, 0.45 um filtered and preserved with 1.5 mL [HNO3] / sample

Four Sampling Sites: 1) Upstream Penticton Creek, 2) Downstream Penticton Creek,

3) Backwash Pond, 4) PRV Station

Trihalomethane's (3 glass vials with septum tops, no head space, 4oC) sampled 4x a year from;

1) PRV Station, 2) Smythe Drive Sample Station, 3) 785 Naramata Rd

Request speciation of the four THM's - i.e. Cl3CH, Cl2BrCH, ClBr2CH, Br3CH

Full WQ Scan includes; Total metals ICP scan (125 mL poly bottle, preserved with 1.5 mL [HNO3] / sample), plus nutrients and other ions ( 2 x 1-L poly bottle/site, 4oC), and Total Phosphorous & Ammonia (125 ml amber glass bottles, preserved with H2SO4 vial) sampled 4x a year

1) PRV Station

2) Okanagan Lake sample tap in lab

3) Penticton Creek sample tap in lab

4) Warren Ave. Well sample artesian or pump running

TOC = Total Organic Carbon (250 mL poly bottle, 2.5 mL [HCl] pres. ) sampled 4x a year from;

1) PRV Station



4) Finished water after filtration for Lake and Creek Source

CN- = Free cyanide (250 mL poly bottle, 2.5 mL 6N NaOH pres. ) sampled 4x a year from;

1) PRV Station




Pesticide LUKE screen and herbicide screen = Two 1-L amber bottles, (no head space, 4oC) once per year from;

1) PRV Station


Quality Control Samples 10% to 20% of samples- Replicate samples

For dissolved aluminum - upstream, downstream and PRV Station samples, collect another grab sample

as close as possible at the same point. For pond collect composite sample.


-45-

Table 5 Distribution Monitoring Location Results 2009

Distribution Monitoring 2009 Location

Location Count Smythe Dr. sample station 45 Naramata Rd. N. sample station 36 Valleyview Rd. S. sample station 35 Gordon Ave. pump station 30 Carmi Ave. pump station 27 Community Centre 27 Timmins St. sample station 26 City Yards 23 Randolph Rd. chlorine station 18 Parkway School 14 1900 Penticton Ave. (WTP) 13 Wiltse School 12 Township 7 10 Columbia School 10 Uplands School 9 KVR School 9 Princess Margaret School 8 459 Waterloo Ave. (WWTP) 7 WWTP 7 City Hall 6 190 Waterloo Ave. 3 241 Orchard Ave. 3 498 Woodruff Ave 3 1126 King Street 3 Township 7 Winery 3 Hillside Winery 3 Evergreen Reservoir 2 CityYards 2 #145-2670 Skaha Lake Rd. 2 124 South Beach Dr. (Marina) 2 699 Heather Rd. 2 144 Maple Street 1 143 Bankview 1 134 Nicholson Place 1 122 Fraser Crt. 1 101 598 Westminster Ave 1 1565 Randolph Rd. 1 #6-854 Main St. 1


-46-

Distribution Monitoring 2009 Location

Location Count #6 - 854 Main St. 1 #145 - 2670 Skaha Lake Road 1 #145 - 1634 Carmi Ave 1 # 6 1701 Penticton Ave 1 1126 King St. 1 257 Orchard Avenue 1 810 Three Mile Road 1 717 Creekside Road 1 710 Kamloops Ave 1 Community Centre Staff Room 1 1 145-2670 Skaha Lake Rd. 1 3099 South Main 1 145 - 2670 Skaha Lake Road 1 PRV Station 1 1786 Fairford Drive 1 1650 Reservior 1 1616 Carmi Ave 1 City Hall Staff Room 1 145-2670 Skaha Lake Road 1 3099 South Main St. 1 Number of bacteriological samples collected 427 Number of sample locations 59 Average free chlorine residual of samples collected 0.63 mg/L Average turbidity of samples collected 0.227 NTU Average pH of samples collected 7.74


-47-

8.1 Internal Lab Testing The City of Penticton has a dedicated lab located at the Water Treatment Plant in which daily analysis is conducted on the source water and the treated water. Two types of monitoring are performed at the lab, (1) monitoring for the purpose of process control and (2) monitoring to insure distribution water meets provincial requirements for safe drinking water. Appendix D lists all lab test results performed at the Water Treatment Plant lab. 8.2 Giardia Performance Monitoring (CT) CT value is a calculation that determines the concentration of disinfectant in relation to the time that the disinfectant is in contact with the water to allow for the inactivation of Giardia. Included in the calculation is source water temperature and pH. The Penticton Water Treatment Plant was able to achieve required CT values 340 days during 2009. Adequate CT was not achieved on 25 occasions. The days of non-compliance were on April 20 30, May 17, May 23, May 24, May 25, May 27 May 31, June 10, June 15, June 17, June 19, June 29. The majority of these non-compliance events occurred during construction of the Water Capacy Upgrade. CT issues occurred when clearwell strorage volume was reduced to accommodate construction during high plant demand periods. Interior Health Authority is aware of these events and recognizes that periodically they will occur. Appendix B lists CT performance calculations. 8.3 Quick Facts Okanagan Lake Lab Data 2009 Lake Alkalinity Maximum 1. February 20, 2009 ____________________________________122 mg/l CaCO3 2. July 31, 2009________________________________________120 mg/l CaCO3 3. August 31, 2009 _____________________________________120 mg/l CaCO3 Lake Alkalinity Minimum 1. July 17, 2009________________________________________110 mg/l CaCO3 2. November 16, 2009___________________________________110 mg/l CaCO3 3. January 2, 2009 ______________________________________112 mg/l CaCO3 Lake Colour Apparent Maximum 1. May 13, 2009 _______________________________________10 Colour Units 2. June 1, 2009 ________________________________________10 Colour Units 3. June 9, 2009 ________________________________________10 Colour Units Lake Colour Apparent Minimum 1. January 16, 2009 _____________________________________2 Colour Units 2. January23, 2009 _____________________________________2 Colour Units 3. February, 2009 ______________________________________2 Colour Units


-48-

Lake Colour True Maximum 1. January 9, 2009 ______________________________________5 Colour Units 2. February 23, 2009 ____________________________________5 Colour Units 3. February 27, 2009 ____________________________________5 Colour Units Lake Colour True Minimum 1. November 16, 2009___________________________________1 Colour Units 2. November 30, 2009___________________________________1 Colour Units 3. December 4, 2009 ____________________________________1 Colour Unit Lake Hardness Maximum 1. July 17, 2009________________________________________124 mg/l CaCO3 2. September 28, 2009 __________________________________124 mg/l CaCO3 3. January 2, 2009 ______________________________________122 mg/l CaCO3 Lake Hardness Minimum 1. November 27, 2009___________________________________110 mg/l CaCO3 2. January 29, 2009 _____________________________________110 mg/l CaCO3 3. September 25, 2009 __________________________________112 mg/l CaCO3 Lake pH Maximum 1. December 23, 2009 ___________________________________8.37 2. June 10, 2009 _______________________________________8.36 3. June 9, 2009 ________________________________________8.35 Lake pH Minimum 1. September 23, 2009 __________________________________7.86 2. September 27, 2009 __________________________________7.91 3. September 18, 2009 __________________________________7.93 Lake Turbidity Maximum 1. May 1, 2009 ________________________________________0.680 NTU 2. May 24, 2009 _______________________________________0.652 NTU 3. May 13, 2009 _______________________________________0.606 NTU


-49-

Lake Turbidity Minimum 1. February 6, 2009 _____________________________________0.158 NTU 2. October 23, 2009_____________________________________0.168 NTU 3. January 9, 2009 ______________________________________0.107 NTU 8.4 Quick Facts Penticton Creek Lab Data 2009 Penticton Creek was not used in 2009 because of the construction of the Water Treatment Plant Upgrade. 8.5 Quick Facts Intake and Distribution System 2009 Total Intake ____________________________________________7667 ML Total Lake Intake _______________________________________7410.8 ML Total Creek Intake_______________________________________256.5 ML Total Distribution _______________________________________7527.6 ML Daily Average Distribution________________________________20.62 Million Liters Average Daily per Capita Distribution _______________________589 Liters/day Maximum Daily per Capita Distribution _____________________1176 Liters/day Minimum Daily per Capita Distribution______________________313 Liters/day Maximum Daily Distribution ______________________________July 23/09 41.17 ML Per capital calculation based on population of 35,000 Daily Intake Maximum 1. July 23, 2009________________________________________41.62 ML/d 2. June 11, 2009 _______________________________________40.86 ML/d 3. July 22, 2009________________________________________40.77 ML/d Daily Intake Minimum 1. November 20, 2009___________________________________11.23 ML/d 2. November 13, 2009___________________________________11.29 ML/d 3. December 26, 2009 ___________________________________11.31 ML/d Lake Source Maximum 1. July 23, 2009________________________________________41.62 ML/d 2. June 11, 2009 _______________________________________40.86 ML/d 3. July 22, 2009________________________________________40.77 ML/d Creek Source Maximum 1. September 15, 2009 __________________________________29.11 ML/d 2. September 18, 2009 __________________________________28.48 ML/d 3. September 16, 2009 __________________________________27.81 ML/d


-50-

Distribution Daily Maximum 1. July 23, 2009________________________________________41.17 ML/d 2. June 11, 2009 _______________________________________39.82 ML/d 3. July 21, 2009________________________________________39.71 ML/d Distribution Daily Minimum 1. December 26, 2009 ___________________________________10.96 ML/d 2. December 28, 2009 ___________________________________11.04 ML/d 3. November 21, 2009___________________________________11.12 ML/d Distribution Alkalinity Average ____________________________108 mg/l CaCO3 Distribution Chlorine Residual Field Average ________________0.630 mg/L Distribution Hardness Average_____________________________114 mg/l CaCO3 Distribution Temperature Average __________________________5.10 C Distribution pH Average__________________________________7.73 Distribution Turbidity Average_____________________________0.080 NTU

9. Backwash Water Discharge to Penticton Creek The City of Penticton is regulated by the Ministry of Land, Air and Water Protection in regards to discharge of water from their municipal water treatment plant to Penticton Creek. Permit PE-13491 was issued in June 1996. The permit contains the following requirements listed below. Testing results for the backwash discharge is contained in Appendix C, Appendix D and Appendix E. There were no unauthorized discharges to Penticton Creek during 2009. General Requirements of Permit PE-13491 Maintenance of Works Operational and Maintenance Manual for Water Treatment Plant Bypass of treatment works. Process Modifications Plans for new works Dechlorination of discharge Dilution of Penticton Creek Operator Certification Contingency and Emergency Response Plan Effluent Monitoring and Reporting Composite Sampling


-51-

Analyses Flow Measurement Reporting Surface Water Monitoring Penticton Creek Sampling Penticton Creek Analyses Flow Measurement Penticton Creek Summary Report First Year of Operation Reporting Permittee Quality Assurance 10%-20% of samples replicated Replicate composite samples

10. SCADA Supervisory Control and Data Acquisition The City of Penticton Water Treatment Plant uses state of the art hardware and software to acquire and analyze data from the treatment plant and its distribution system. The software package that the city uses is called Intouch, and was developed by Wonderware of Irvine California. Hardware is built by Modicon and consists of numerous electronic devises. All City pump stations, reservoirs and auxiliary power generation units are integrated into the SCADA system located at the Water Treatment