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Provincial Regulation 170/03Annual and Summary Report

For the PeriodJanuary 1 to December 31, 2007

For the City of Guelph andGazer/Mooney Water Systems

Submitted to:Guelph City Council

and Township of Guelph/Eramosa

Prepared by: The City of Guelph Waterworks Division

of the Environmental Services Department

GUELPH WATERWORKS DIVISION

Provincial Regulation 170/03 Annual and Summary Report

For the Period January 1 to December 31, 2007

For the City of Guelph and Gazer/Mooney Water Systems

Submitted to:

Guelph City Council and Township of Guelph/Eramosa

Prepared by: The City of Guelph Waterworks Division of the

Environmental Services Department

3

Contents

Page Section 1 Executive Summary ....................................................................................................11 Section 2 Introduction .................................................................................................................15 Section 3 Water Treatment Summary.........................................................................................23 Section 4 Summary of Water Test Results .................................................................................27 Section 5 Summary of Adverse Test Results and Corrective Actions ........................................39 Section 6 Summary of Maintenance ...........................................................................................43 Section 7 Compliance with Terms and Conditions of the Consolidated Certificate of Approval .47 Section 8 Non-Compliance with Terms and Conditions of the Certificate of Approval and Regulations .................................................................................................................................53 Section 9 Summary of Sodium Analytical Results ......................................................................57 Section 10 Summary of Quantity of Water Supplied...................................................................61 APPENDIX A .................................................................................................................................. CONSOLIDATED CERTIFICATE OF APPROVAL.....................................................................63 APPENDIX B .................................................................................................................................. 2007 MONTHLY PUMPAGE SUMMARIES..............................................................................101 APPENDIX C .................................................................................................................................. 2007 MONTHLY MAXIMUM INSTANTANEOUS FLOW SUMMARIES ...................................109

5

List of Figures

Page Figure A - 2007 Active Water Supply Facilities...........................................................................18 Figure B 2007 Gazer/Mooney Distribution System.....................................................................19 Figure C - Ten Year Trend of Total Annual Water Pumpage......................................................61

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List of Tables

Page Table A - 2007 Sodium Hypochlorite Usage and Chlorine Dosage ............................................23 Table B - 2007 Sodium Silicate Usage and Dosage...................................................................24 Table C1 - 2007 Guelph Water Supply Bacteriological Results Summary .................................28 Table C2 - 2007 Gazer/Mooney Distribution System Bacteriological Results Summary............29 Table D - 2007 Guelph Water Distribution Bacteriological Results Summary ............................30 Table E1 - 2007 Guelph Water Supply & Distribution Process Parameter Results Summary....31 Table E2 - 2007 Gazer/Mooney Distribution System Process Parameter Results Summary.....32 Table F - 2007 Reg. 170/03 Guelph Water Supply Schedule 23 Results...................................33 Table G - 2007 Reg. 170/03 Schedule 24 Results Summary for Guelph Water Supply.............34 Table H1 - 2007 Guelph Water Supply Miscellaneous Water Quality Results Summary ...........35 Table H2 - 2007 Gazer/Mooney Distribution System Miscellaneous Water Quality Results

Summary .............................................................................................................................36 Table I - 2007 Summary of Adverse Test Results and Corrective Actions .................................40 Table J - 2007 Customer Water Quality Complaints Summary ..................................................49 Table K - 2007 Sodium Analytical Results..................................................................................57 Table L - Monthly Pumpages (m3) for Wells (Before Treatment) as Governed by Permits to Take

Water .................................................................................................................................103 Table M - Monthly Pumpages (m3) for Treated Water to the Distribution System as Governed by

the Consolidated Certificate of Approval ...........................................................................106 Table N - Monthly Flows (L/s) for Wells (Before Treatment) as Governed by Permits to Take

Water .................................................................................................................................111 Table O - Monthly Instantaneous Flows (L/s) for Treated Water to the Distribution System as

Governed by the Consolidated Certificate of Approval ......................................................114

7

SECTION 1 EXECUTIVE SUMMARY

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Section 1 Executive Summary This report is submitted to satisfy Schedule 22 of Ontario Regulation 170/03 (O.Reg. 170/03, Schedule 22) requirement to prepare and distribute a Summary Report. According to this regulation, the Summary Report must contain the following information:

• List the requirements of the Safe Drinking Water Act, the regulations, the system’s approval and any order that the system failed to meet at any time during the period covered by the report and specify the duration of the failure;

• For each failure, describe the measures that were taken to correct the failure; • A summary of the quantities and flow rates of the water supplied during the period

covered by the report, including monthly average and maximum daily flows, and daily instantaneous peak flow rates; and

• A comparison of the actual flows to the rated capacity and flow rates approved in the system’s approval.

As well, this report is submitted to satisfy the Section 11 of Ontario Regulation 170/03 (O. Reg. 170/0, S. 11) requirement to prepare and distribute an Annual Report. According to this regulation, the Annual Report must contain the following information:

• A brief description of the water system; • A list of water treatment chemicals used; • A summary of the most recent water test results required under O. Reg. 170/03 or

an approval; • A summary of adverse test results and other issues including corrective actions

taken; and • A description of major expenses incurred to install, repair or replace equipment.

This report is prepared and submitted for both the City of Guelph Water System and the Gazer/Mooney distribution system as both systems are currently operated and maintained by the City of Guelph Waterworks Division of the Environmental Services Department.

Section 2 of this report contains a brief description of the drinking water systems. In 2007, all water was treated consistent with Ontario Ministry of the Environment (MOE) standards using approved treatment chemicals – specifically sodium hypochlorite and sodium silicate. To meet legislative requirements, water from the Emma well, Water St. Well, and water passing through F.M. Woods Pumping Station was also disinfected with ultra-violet light (UV) treatment in 2006 and 2007. In 2007, over 18,800 microbiological and chemical quality tests were performed on treated water supplied by Guelph Waterworks. All samples were collected by certified Waterworks operators following industry standard and Ministry of the Environment (MOE) protocols. Analyses were performed by these same operators and by accredited independent laboratories on water samples collected throughout the water system (supply and distribution).

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In 2007, all water supplied to consumers met or bettered all health-related Ontario Drinking Water Standards. Of the 8,683 treated water bacteriological analyses performed on treated water, one test or 0.012 percent indicated the presence of adverse indicator bacteria (see Table I). When re-sampled, the results did not confirm any water quality deterioration. At no time was E. coli detected in the systems’ drinking water. Of the 10,148 chemical analyses performed, one sample showed reportable levels of sodium that were confirmed through resampling to be below the Aesthetic guideline (see Table I). One sample showed a value of lead in the distribution system above the guideline, but resampling did not confirm this result. In total, zero percent of samples confirmed the presence of chemicals above regulatory health guidelines. In 2007, Waterworks operated and maintained the water supply and distribution system in such a manner that water supplied to all consumers serviced by the system met the requirements of the Safe Drinking Water Act, 2002. All operation and maintenance duties were performed by certified, adequately trained operators. In 2007, operation and major maintenance of the water supply and distribution system was accomplished with $6.6 million in funding from the operating budget and $11 million in capital funding. In 2007, Waterworks complied with the requirements of the Consolidated Certificate of Approval. All water supplied to customers met or exceeded regulatory standards. Upgrades at the Water Street Well and Woods Station were completed in 2007 to comply with new Provincial standards for disinfection of drinking water. In 2007, Waterworks had no instances of non-compliance with Ministry of the Environment regulations regarding drinking water. Copies of the Provincial Regulation 170/03 Annual and Summary Report for the Period January 1 to December 31, 2007 can be obtained at the following locations:

• Woods Station, 29 Waterworks Place (519-837-5627); • The main branch of the Guelph Public Library; • City Clerk’s Office, City Hall, 59 Carden Street and • Electronically on the City’s website, www.guelph.ca/waterworks.

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http://www.guelph.ca/waterworks

SECTION 2 INTRODUCTION

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Section 2 Introduction The mission of the City of Guelph Waterworks Division is to provide customers and the community with valued service through responsible water resource management. Waterworks provides and promotes reliable, cost effective systems for the safe production and delivery of consistently high quality water. Guelph Waterworks is a municipally owned and operated water utility first established in 1879. The source of Guelph’s drinking water is a series of 19 groundwater wells and a shallow groundwater collector system. Guelph’s water supply and distribution system is comprised of the following infrastructure:

o 6 kilometres of 1,067 mm diameter water supply aqueduct; o 5 underground storage reservoirs with a combined capacity of 48,000 cubic metres; o 3 water towers with a combined capacity of 11,300 cubic metres; o 600 kilometres of buried water main ranging in diameter from 100 mm to 900 mm; o Approximately 3,600 watermain valves; o Approximately 2,400 fire hydrants; and o Approximately 36,500 water services and water meters.

This distribution infrastructure (including water mains, valves, fire hydrants, services, and meters) includes the Gazer/Mooney distribution system. The replacement cost of the entire system is estimated to be $327 million (un-inflated) or approximately $3,000 per capita. The 2007 Operating Budget contained expenditures totalling $14.5 million. All Waterworks operations and capital projects are funded directly from the sale of water. In 2007, a total of 18.6 million cubic metres of water was pumped and treated. Lost water totalled approximately 11.87 percent of all water pumped. The average daily water demand was 51,005 cubic metres. The highest daily use of water occurred on June 26 when 63,652 cubic metres of water was pumped. This is 3.57 percent higher than the maximum pumpage day of 2006. In 2007, over 18,800 treated water microbiological and chemical quality tests were performed by certified operators and accredited, licensed laboratories on water samples collected throughout the water system. In all cases, the drinking water supplied to all customers was considered safe and was demonstrated to be better than all Ontario and Canadian health-related guidelines. Regulatory Changes In response to an outbreak of Escherichia (E. coli):O157 in Walkerton, the Ontario Provincial Ministry of the Environment (MOE) announced Operation Clean Water and enacted the Safe Drinking Water Act (the Act) in 2002. The Act prescribes strict, mandatory requirements for

15

testing and treatment of all municipal drinking water, and actions necessary when standards are not met. The regulation also identifies accountability for drinking water safety and supports the consumer’s right to timely and accurate reporting of water quality information. The Act has impacted Guelph Waterworks and its customers in the following ways:

o Previously, Waterworks relied on regular bacteriological testing to determine the chlorine levels required for disinfection of our various groundwater supplies. Minimum, prescribed levels of chlorine must now be added to all water supplies and maintained in all water distributed to customers. Customers have noticed and commented on the increased chlorine taste and odour in Guelph’s water. Waterworks is working with the Ministry of the Environment to minimize chlorine use.

o The additional chlorine in Guelph’s water is reacting with natural iron and manganese in

the groundwater to create more frequent episodes of discoloured water for customers. Waterworks has increased watermain cleaning activities to limit these incidents and is planning water treatment upgrades to remove these minerals from our well supplies.

o Additional sampling and testing, and the generation of both this Summary Report and an

Annual Report are required by the legislation.

o All water systems must follow minimum disinfection standards. This involves upgrades to system infrastructure including chemical systems, control and monitoring systems, and storage reservoirs.

o System upgrades have resulted in decreased system capacity in the short term as

existing supplies undergo treatment upgrades to comply with new legislation.

o Schedule 22 and Section 11 of Regulation 170/03 requires Waterworks to produce and distribute this annual Summary Report. Copies will be available for customers at Woods Station at 29 Waterworks Place, at the main branch of the Guelph Public Library and also at the City Clerk’s office in City Hall, 59 Carden Street. An electronic copy of the report will also be available on the City’s web site at www.guelph.ca/waterworks.

o Regulation 170/03 was amended in 2007 to include mandatory lead testing within the

City of Guelph. The requirements of the amendment are reflected in section 15.1 and 15.2 of the regulations. The result is that the City of Guelph must take a minimum of 250 additional water quality samples

Water rates have been increased significantly to pay for these activities and upgrades with the goal of providing a more secure water supply. On October 30, 2007 the MOE issued Guelph’s latest Consolidated Certificate of Approval (CC of A). The CC of A acts as a license for water supply and distribution operations and sets out a schedule of mandatory facility upgrades to comply with the Act. Currently one remaining water supply facility requires major disinfection and treatment upgrades.

16

http://www.guelph.ca/waterworks

The Guelph water system is currently licensed as a MOE Class IV Water Distribution and Supply Sub-System. In 2007, 31 water operators and staff were licensed to operate and maintain the water system. Figure A shows the locations of water supply facilities that were active in 2007. Figure B shows the location of the Gazer/Mooney distribution system.

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18

Figure A - 2007 Active Water Supply Facilities

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//////////////////////////////////////////////////////////////////////////////////////////////////

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Figure B 2007 Gazer/Mooney Distribution System

19

SECTON 3 WATER TREATMENT SUMMARY

21

Section 3 Water Treatment Summary This section describes the type and amount of drinking water treatment chemicals used in 2007. In 2007, chlorine in the form of a 12 percent sodium hypochlorite solution was added to disinfect all water supplied to consumers. Liquid sodium silicate was also added to all water supplied from the Helmar and Queensdale wells to control high levels of naturally occurring iron and manganese. Through the act of sequestration, sodium silicate prevents this iron and manganese from precipitating when the water is treated and thereby prevents discoloured water. In 2007, there were no periods of abnormal use of sodium hypochlorite or sodium silicate. Tables A and B below summarize sodium hypochlorite and sodium silicate use at each supply facility in 2007.

Table A - 2007 Sodium Hypochlorite Usage and Chlorine Dosage

FACILITY 12 % SODIUM

HYPOCHLORITE kg/Daya

WATER PRODUCED

Cubic Metres/Daya

CHLORINE DOSE mg/L

PURPOSE

Woods 344.52 23,760 1.74 Well water disinfection Helmar 36.81 986 4.48 Well water disinfection

Park 66.66 4,733 1.69 Well water disinfection Burke 82.50 5,562 1.78 Well water disinfection

Downey 55.43 4,056 1.64 Well water disinfection Membro 40.47 3,545 1.37 Well water disinfection

Queensdale 26.15 993 3.16 Well water disinfection Water 20.06 1,337 1.80 Well water disinfection Dean 16.51 1,312 1.51 Well water disinfection

University 17.56 1,538 1.37 Well water disinfection Calico 11.73 880 1.60 Well water disinfection Emma 39.62 2,874 1.67 Well water disinfection Clythe 12.41 3,310 0.45 Re-chlorination

Paisley 27.67 4,000 0.83 Re-chlorination & well water disinfection

Robertson 3.83 5,752 0.08 Re-chlorination mg/L - milligrams per litre. Equivalent to parts per million. a – Average based on days in operation

23

Table B - 2007 Sodium Silicate Usage and Dosage

FACILITY SODIUM SILICATE kg/Daya

WATER PRODUCED

Cubic Metres/Day a

SILICATE DOSE mg/L a

PURPOSE

Helmar 17.13 986 4.97 Iron control Queensdale 15.45 993 4.45 Iron control mg/L - milligrams per litre. Equivalent to parts per million. a Average based on days in operation

24

SECTION 4 SUMMARY OF WATER TEST RESULTS

25

Section 4 Summary of Water Test Results This section summarizes water quality test results required by the Ontario Drinking-Water System Regulation 170/03 for the period January to December 2007. In 2007, all water supplied to consumers met or bettered all health-related Ontario Drinking Water Standards. Of the 8,683 bacteriological analyses performed on treated water, one test or 0.01 percent indicated the presence of adverse indicators (see Table I). When resampled the results did not confirm water quality deterioration. At no time was E. coli detected in Guelph’s drinking water. Of the 10,148 chemical analyses performed on treated water, zero samples confirmed the presence of chemicals above regulatory health guidelines. The following Tables C1 through H2 provide a summary of 2007 laboratory and process parameter results. In general, Guelph water supply water quality test results also pertain to the water provided to the Gazer/Mooney water distribution system. A confirmed adverse sample consists of two consecutive samples where both results are consistent and demonstrate non-compliance with a legislative water quality guideline. Adverse sample results are always confirmed because of the potential for false positive results inherent in any water sampling program.

27

TABLE C1 - 2007 Guelph Water Supply Bacteriological Results Summary

Parameter O.D.W.S. Total Samples

Confirmed Adverse Samples

Detects** Range Typical Source of Contaminant

Total Coliform count/100mL * 649 0 0 N/A

Indicates possible

presence of fecal matter

E.Coli count/100mL * 649 0 0 N/A Definite indicator

of fecal matter

Heterotrophic Plate Count count/100mL

500 649 0 22 0-89 Indicator of water

quality deterioration

Background Count 200 cfu/100mL

200*** 649 0 9 0-190 Indicator of water


Raw Water Bacti TestsB N/A 3060 N/A 160 N/A

Indicator of Environmental Water Quality

O.D.W.S - Regulation 169/03 Ontario Drinking Water Standards N/A - Not Applicable mL – millilitre * Indicator of Adverse Water Quality if presence confirmed in treated water ** Detect does not automatically equal adverse. Confirmation samples, when taken, were compliant except in raw samples where resampling does not apply. ***reporting is not required A – see Table I , #1 B – raw water bacteriological tests include tests for E.Coli, Total Coliform, Background Bacteria and Heterotrophic Plate Count. Raw water quality is monitored for information on source water quality. Data for raw water is not individually reported

28

TABLE C2 - 2007 Gazer/Mooney Distribution System Bacteriological Results Summary



Percent Adverse Detects** Range Average

Typical Source of

Contaminant

Total Coliform count/100mL * 50 0 0 0 N/A N/A

Indicates possible

presence of fecal matter

E.Coli count/100mL * 50 0 0 0 N/A N/A

Definite indicator of fecal matter

Heterotrophic Plate Count count/100mL

500 50 0 0 1 0-4 N/A Indicator of

water quality deterioration

Background Count 200 cfu/100mL

200*** 49 0 0 0 N/A N/A Indicator of

water quality deterioration

O.D.W.S - Regulation 169/03 Ontario Drinking Water Standards N/A - Not Applicable mL – millilitre * Indicator of Adverse Water Quality if Confirmed in Treated Water ** Detect does not equal adverse. Confirmation samples, when taken, were compliant. *** reporting is not required Please note that a weekly sample for O. Reg 170/03 is defined as a sample that is taken not less than 5 days and not more than 10 days from the last valid sample. Depending on individual sample schedules a sample that is taken weekly may result in a total of 37 – 73 samples annually.

29

TABLE D - 2007 Guelph Water Distribution Bacteriological Results Summary



Detects** Range Typical Source of Contaminant

Total Coliform count/100mL * 1721 0 1 0-1

Indicates possible presence of Pathogenic organisms

E.Coli count/100mL * 1721 0 0 N/A Definite indicator of

fecal matter

Heterotrophic Plate Count

count/100mL 500 726 0 20 0-43

Indicator of water quality

deterioration Background Counts 200 cfu/100mL

200*** 1720 0 11 0-180 Indicator of water


O.D.W.S - Regulation 169/03 Ontario Drinking Water Standards N/A - Not Applicable mL – millilitre * Indicator of Adverse Water Quality if Confirmed in Treated Water ** Detect does not equal adverse. Confirmation samples were compliant. ***reporting is not required

30

TABLE E1 - 2007 Guelph Water Supply & Distribution Process Parameter Results Summary



Average Range Health Exceedences Notes

Treated Turbidity in

Supply (NTU)a

1 609 0 0.19 0.03-0.40 NO

Indicator of particles in

water

Raw Turbidity in

Supply (NTU)

N/A 236 0 0.17 0.05-2.89 NO

Indicator of particles in

water

Free Chlorine in

Supply (mg/L)

0.06 - 4.0 5124 0 0.86 0.22-

2.94 NO

MOE recommends 0.2 mg/L to

maintain microbiological

quality

Free Chlorine in Distribution

(mg/L)

0.06 - 4.0 2818 0 0.72 0.22-

1.51 NO

MOE recommends 0.2 mg/L to

maintain microbiological

quality O.D.W.S - Regulation 169/03 Ontario Drinking Water Standards NTU - Nephelometric Turbidity Units mg/L – milligrams per litre. Equivalent to parts per million

31

Table E2 - 2007 Gazer/Mooney Distribution System Process Parameter Results Summary

Parameter

O.D.W.S.

Total Samples


Average

Range

Health

Exceedences Notes

Free

Chlorine in Distribution

(mg/L)

0.06-4.0

365 0 0.65 0.30-1.03 NO

MOE

recommends 0.2 mg/L

to maintain microbiological

quality

O.D.W.S. – Regulation 169/03 Ontario Drinking Water Standards mg/L – milligrams per litre. Equivalent to parts per million

32

TABLE F - 2007 Reg. 170/03 Guelph Water Supply Schedule 23 Results

Parameter O.D.W.S. mg/L

Total Samples

Samples Above

DetectionAverage

mg/L Range mg/L

Health Exceedance

Typical Source of Contaminant

Antimony 0.006 19 7 0.0009 <0.0005-0.0013 NO

Natural Component of

Water

Arsenic 0.025 19 1 0.002 <0.001-0.002 NO


Water

Barium 1 19 19 0.058 0.031-0.076 NO


Water

Boron 5 19 18 0.042 <0.010-0.081 NO


Water

Cadmium 0.005 19 4 0.0001 <0.0001-0.0002 NO


Water

Chromium 0.05 19 0 N/A <0.005 NO Natural

Component of Water

Mercury* 0.001 15 0 N/A <0.0001 NO Rare in Groundwater

Selenium 0.01 19 0 N/A <0.002 NO Natural

Component of Water

Uranium 0.1 19 18 0.0015 <0.0001-0.0053 NO


Water O.D.W.S - Regulation 169/03 Ontario Drinking Water Standards N/A – not applicable mg/L - milligrams per litre. Equivalent to parts per million < - less than * Mercury sampling required once every 3 years - not required in this reporting period.

33

TABLE G - 2007 Reg. 170/03 Schedule 24 Results Summary for Guelph Water Supply

Parameter O.D.W.S. (mg/L)

Total Samples

Samples Above

DetectionAverage

mg/L Range mg/L

Health Exceedance

Benzene 0.005 74 0 N/A <0.0001 NO Carbon Tetrachloride 0.005 74 0 N/A <0.0001 NO

Chlorobenzene (monochlorobenzene) 0.08 74 0 N/A <0.0001 NO

1,2-Dichlorobenzene 0.02 74 0 N/A <0.0002 NO 1,4-Dichlorobenzene 0.005 74 0 N/A <0.0002 NO 1,2-Dichloroethane* (1,1-dichloroethane) 0.005 74 0 N/A <0.0001 NO

1,1-Dichloroethylene (Vinylidene Chloride) 0.014 74 0 N/A <0.0001 NO

Dichloromethane 0.05 74 0 N/A <0.0005 NO Tetrachloroethylene (perchloroethylene) 0.03 74 6 0.0002 <0.0001-

0.0002 NO

Trichloroethylene 0.005 74 26 0.0011 <0.0001-0.0030 NO

Vinyl Chloride 0.002 74 0 N/A <0.0002 NO O.D.W.S - Regulation 169/03 Ontario Drinking Water Standards N/A – not applicable mg/L - milligrams per litre. Equivalent to parts per million < - less than * 1,2-Dichloroethane only done every 3 years

34

Table H1 - 2007 Guelph Water Supply Miscellaneous Water Quality Results Summary

Parameters

O.D.W.S. mg/L

Total Samples

Samples Above

Detection

Averagemg/L

Range mg/L

Health Exceedance

Treated Water - Nitrate 10 63 53 1.4 <0.1 - 5.4 NO

Treated Water - Nitrite 1.0 63 5 0.01 0.01 – 0.02 NO

Lead in Distribution

System

0.01 15 13 0.0027 0.000-0.018b NO

Trihalomethanes in Distribution System

0.1 91 88 0.0129 0.0003-0.0529 NO

Sodium 20 and 200a 17 17 64.35 20 - 120 NO

O.D.W.S - Regulation 169/03 Ontario Drinking Water Standards < - less than mg/L - milligrams per litre. Equivalent to parts per million a - sodium levels above 20mg/L are reportable to the MOE every five years. Maximum allowable at any time as an aesthetic objective is 200mg/L b – a single distribution sample indicated a lead value above the ODWS – subsequent resampling did not confirm that the value was above the ODWS – see table I

35

TABLE H2 - 2007 Gazer/Mooney Distribution System Miscellaneous Water Quality Results Summary

Parameter O.D.W.S. mg/L

Total Samples

Samples Above

Detection Average

mg/L Range mg/L

Health Exceedance

Lead in Distribution System 0.01 1 0 N/A N/A NO

Trihalomethanes in Distribution System 0.1 4 4 0.03215 0.0149-

0.0529 NO

O.D.W.S - Regulation 169/03 Ontario Drinking Water Standards N/A – not applicable mg/L - milligrams per litre. Equivalent to parts per million

36

SECTION 5 SUMMARY OF ADVERSE TEST RESULTS

AND CORRECTIVE ACTIONS

37

Section 5 Summary of Adverse Test Results and Corrective Actions This section summarizes adverse water quality test results and incidents, and corresponding corrective actions taken for the period January to December 2007. Schedule 15.1 and 16 of the Drinking-Water Systems Regulation 170/03 prescribes the reporting procedures that must be followed when adverse water quality is observed or detected during routine testing. Waterworks contract laboratories must notify the MOE, the Wellington-Dufferin-Guelph Public Health (WDGPH), and the Waterworks Supervisor of the adverse result by phone. The Waterworks Supervisor must then again notify both by phone and in writing, the MOE and WDGPH of the adverse result and the conditions of operation at the time of sampling. If applicable, the Supervisor will then implement corrective actions such as resampling, increasing the chlorine dose, isolating a source, or flushing the system. Waterworks must then report the results of the corrective actions taken to both the MOE and WDGPH within seven days of the issue resolution. When an adverse bacteriological or chemical result is detected, the first “corrective” action required under Schedule 17 of Regulation 170/03 is the resampling and testing of the source with the adverse result. It is the nature of both microbiological and chemical analysis to occasionally have false-positive results. If additional confirmatory adverse results are not detected, then routine monitoring resumes. In 2007 a total of three sample results were classified as adverse according to legislation or Waterworks policy (see Table I):

• One sample indicated sodium above the lower reporting guideline of 20mg/L; • One sample initially indicated Total Coliform above the regulatory guideline (follow up

sampling DID NOT confirm the presence of Total Coliform bacteria above the regulatory guideline); and

• One sample for lead in the distribution system indicated a value for lead above 0.010 mg/L (max = 0.010). Subsequent resampling vales did not confirm the initial result.

The confirmatory resample results for Total Coliform were within regulatory guidelines. More detailed information on adverse results is provided in the following Table I.

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Table I - 2007 Summary of Adverse Test Results and Corrective

Actions

#

Date

Location

Description Corrective

Action Resample

Results Good

1 Mar 7 Clythe Inlet One positive count of

total Coliform (Max ODWS = 0 cfu).

Health Unit and MOE notified. Resampled at

location and up and down stream.

Yes

2 Jul 13 Hydrant H77-002

Lead above 0.010mg/l

(Max ODWS = 0.010 mg/L)

Health Unit and MOE notified. Resampled at

location, up and downstream and at closest source and water tower.

Yes

3 Aug 10 Membro Well Sodium above 20mg/l (Max ODWS = 20 mg/L)

Health Unit and MOE notified. Resampled.

Yes

ODWS. – Regulation 169 Ontario Drinking Water Standards cfu = colony forming units mg/L – milligrams per litre ug/L – micrograms per litre Note 1 – Sodium levels above 20mg/L are reportable to the MOE every five years. Maximum allowable at any time as an aesthetic objective is 200mg/L. Reporting times vary from location to location based on the concentration of sodium within the source waters – all other sources have been reported within the last 5 years

40

SECTION 6 SUMMARY OF MAINTENANCE

41

Section 6 Summary of Maintenance This section summarizes the 2007 major operating and capital expenses incurred to maintain the water supply and distribution system. The Waterworks Division of the Environmental Services Department is responsible for the supply and distribution of potable water to the citizens of Guelph. Water quality objectives established by the MOE are achieved through a combination of groundwater protection initiatives, disinfection of water from 19 groundwater wells and the maintenance of a distribution network consisting of almost 600 km of watermain. All Waterworks revenue is derived directly from the sale of water to customers. The water programs and services described below contribute to the Waterworks and Wastewater vision:

“We will be a recognized leader in municipal water management, moving forward consistently at the forefront of our industry and setting a standard for others to follow.”

Regulatory Compliance In February 2002, the Ministry of the Environment (MOE) issued a Consolidated Certificate of Approval (CC of A) to Waterworks based on the findings of the 2001 Engineers Report. The CC of A outlines the following requirements that have direct budgetary impact: A) Completion of Disinfection Upgrades by June 2007 Disinfection upgrades to the City’s water supply system have been substantially completed with the final Carter well facility scheduled to be completed in early 2008. Funding for these upgrades is split equally between the municipality, province and federal government with the City portion forecast at approximately $6 million. B) Completion of Groundwater Under the Direct Influence of Surface Water (GUDI) Compliance Treatment Study and Potential Treatment Upgrades In July of 2002, the City completed and submitted for MOE review a GUDI study of five water sources. In August 2006, a revised CC of A was received listing additional treatment upgrades and a compliance schedule. The upgrades have been substantially completed in 2007. Staff anticipates these upgrades cost an additional $16 million and have received Provincial and Federal support for a portion of this cost.

43

Sustaining Infrastructure The Waterworks mission supports sustaining infrastructure to ensure reliable service. Over 80 percent of the water system is underground. In 2007, approximately $250,000 was spent on watermain re-lining. Operating Budget Highlights In 2007, Waterworks budgeted $3.1 million and $3.5 million to operate and maintain the water distribution and supply systems respectively. The following maintenance activities were funded by the Waterworks Operating budget in 2007:

• Repair of 57 watermain breaks; • Addition of 7 kilometres of new watermain • Replacement of 25 valves • Addition of 106 watermain valves; • Repair of 14 fire hydrants; • Addition of 83 hydrants • Addition of 906 new services • Removal of 2 services • Replacement of 1,122 water meters, installation of 906 new water meters and removal of

9 water meters from demolished properties; • Replacement or major repair of two Water Supply pumps and four Booster Station

pumps and • F.M. Woods Station Disinfection Upgrade • Arkell Aqueduct Upgrade • Water Street Disinfection Upgrade • Paisley Booster Station Refurbishment; and • Flushing and swabbing 117 kilometres of watermain.

44

SECTON 7 COMPLIANCE WITH TERMS AND

CONDITIONS OF THE CONSOLIDATED CERTIFICATE OF APPROVAL

45

Section 7 Compliance with Terms and Conditions of the Consolidated Certificate of Approval In 2007, Waterworks operated under three Consolidated Certificates of Approval (CC of A). CC of A 9434-6QRKDB (August 24, 2006), 9105-73RGSM (July 27, 2007), and 8929-77MHN9 (October 30, 2007) A copy of the most recent CC of A is included as Appendix A of this report. In 2006, Waterworks complied with all terms and conditions of each of the CCs of A. The following section briefly summarizes Waterworks’ compliance with the main terms and conditions as listed in the various CCs of A. Certificate of Approval Part 1 – Drinking-Water System Description The first section of the CC of A describes the various parts of the drinking water system operated by the City. Certificate of Approval Part 2 – Definitions and Information This section of the CC of A provides standard MOE definitions of terms used in the CC of A. Certificate of Approval Part 3 - General In 2007, Waterworks informed contractors working on the water supply and distribution systems of the requirements of regulations and legislation related to the work being conducted. In accordance with Part 3 – General, Guelph Waterworks operated the drinking water system in accordance with the Safe Drinking-Water Act, 2002. Over 18,800 water quality tests were performed on Guelph drinking water in 2007. The results demonstrate that Guelph tap water is safe, and are summarized in tables provided in Section 4 of this report. As well, Guelph Waterworks had valid Permits to Take Water for all municipal water supplies at the rates listed in the CC of A. A copy of the CC of A was “kept in a conspicuous place so that it [was] available for reference by all persons responsible for all or part of the operation of the approved drinking-water system”. All records required by or related in accordance with the CC of A have been, and are being retained for five years in a convenient location. Waterworks continues to maintain all records

47

and information related to water quality monitoring, sampling and analyzing programs for a minimum period of five years. Certificate of Approval Part 4 – Performance In accordance with Part 4 – Performance, Guelph Waterworks ensured that distribution flows did not exceed the maximum flow rates as set out in the CC of A, Table 4.1: Rated Capacities. In accordance with Part 4.4 – Performance, Guelph Waterworks ensured that in 2007 the UV disinfection equipment operated at Emma and Water wells provided a minimum dose of 40 mJ/cm2 at all times, and 24 mJ/cm2 at F.M. Woods Station. Certificate of Approval Part 5 – Monitoring and Recording In accordance with Part 5 – Monitoring and Recording, Guelph Waterworks operated and maintained devices to measure flow rate and daily quantity of water being supplied from each source. All flow measuring devices were checked and calibrated in accordance with the manufacturer’s instructions. In 2007, Waterworks verified the accuracy of each flow measuring device. In 2007, Waterworks recorded total daily flows at each water supply. This information is provided in summary tables included in Appendix B of this report. In accordance with Part 5.5 – Monitoring and Recording, Guelph Waterworks collected UV performance and flow data at the frequency outlined in the CC of A. In accordance with Part 5.6 – Monitoring and Recording, Guelph Waterworks collected Arkell recharge and collector water quality data as mandated by the CC of A. Certificate of Approval Part 6 – Operations and Maintenance In accordance with Part 6 – Operations and Maintenance, Guelph Waterworks ensured that all chemicals used in the operation of the drinking water system met all applicable standards set by the American Water Works Association (AWWA) and the American National Standards Institute (ANSI) safety criteria standards NSF/60 and NSF/61. With regard to new stock, materials and infrastructure, Waterworks ensures that all new equipment, materials and chemicals comply with the AWWA and ANSI standards. As well, an up-to date operations manual including all information required by the CC of A was maintained and available for reference by all persons responsible for all or part of the operation

48

of the approved drinking-water system. As part of the operations manual, Waterworks is required to maintain documentation and procedures for responding to customer complaints. In 2007, Waterworks maintained procedures for receiving, responding to, and documenting customer complaints. Staff received customer complaints and entered relevant information into the complaints database. This database allowed management to track and resolve issues and review trends in complaint information. In 2007, a total of 275 complaints were recorded in the complaints database. The majority of these complaints were related to discoloured water caused by disruption of sediment in water mains. The following Table J summarizes the types of complaints received in 2006. “Other” refers to customer inquires related to health concerns, water meters and general information requests.

TABLE J - 2006 Customer Water Quality Complaints Summary Number Complaint Type Complaint Group

126 Water is Yellow, Brown, Black, White, Sandy Appearance 18 Water Tastes of Chlorine, Sulphur, Metal, Stale Taste/Odour 11 Water Pressure Pressure 46 Meters, Hydrants, Other Leaks 90 Watermain Breaks Suspected Main Breaks

275 Request for Shut Offs and Turn Ons, Inquiries, Other Miscellaneous Additionally, up-to-date Process and Instrumentation Diagrams and as-constructed drawings for the drinking water system were kept on site at each drinking water facility. In 2007, Waterworks continued to follow written standard operating procedures for the notification of both the MOE and local health unit in the event of adverse water quality as defined by the Drinking Water Systems regulation. Further, Waterworks continued to develop the Waterworks Emergency Plan to support the overall City of Guelph Emergency Plan. Staff training was provided on standard operating procedures related to incident and emergency response. As well, Waterworks ensured the availability of adequate equipment and materials to assist with incident and emergency response. Certificate of Approval Part 7 – Future Alterations In 2007, there were no applicable terms and references included in Part 7 – Future Alterations

49

Certificate of Approval Part 8 – Studies and Upgrades Required As required by condition 8.3 of the current CC of A, the installation of enhanced disinfection upgrades for the Carter Wells and Arkell Glen collector system was commenced in 2004. These upgrades are scheduled for completion by in 2008. As required by condition 8.4 of the current CC of A, the chlorine contact upgrades required at the Water Street Well was completed by March 31, 2007. As required by condition 8.5 (i) of the previous CC of A, the installation of backflow prevention devices on reservoir overflows was completed in October 2004. Re-chlorination system upgrades at Paisley Pumping Station and Robertson Booster Pumping Station were completed in October and November 2004 respectively. The control system facility upgrades have been completed by the mandatory deadline (December 31, 2006) to provide minimum functionality. The installation of further enhancements to the system is ongoing. The correcting of deficiencies with the Arkell Glenn Collectors is scheduled to be completed after the installation of the Arkell Glenn Collectors flow diversion chamber. The flow diversion chamber is being constructed as part of the enhanced disinfection upgrade of the Arkell Glenn Collectors and should be completed by the end of 2007. The interim measures listed in conditions 8.6 and 8.6.1 of the current CC of A to ensure enhanced disinfection at Burke, Downey Wells and at the Arkell Glenn Collectors and Carter Wells were maintained in 2007.

50

SECTION 8 NON-COMPLIANCE WITH TERMS

AND CONDITIONS OF THE CONSOLIDATED CERTIFICATE OF APPROVAL AND REGULATIONS

51

Section 8 Non-Compliance with Terms and Conditions of the Certificate of Approval and Regulations This section of the Summary Report consists of a short description of issues of non-compliance with the terms and conditions as listed in the CC of A and with applicable provincial regulations. In 2007 there were no instances in which Waterworks operations were conducted in non-compliance with the terms and conditions listed in the CC of A. The promulgation of the Ontario “Drinking Water Protection Regulation 459/00” in August of 2000 introduced a new standard for municipal water treatment and placed a number of Guelph Waterworks facilities in non-compliance in terms of disinfection treatment. MOE procedure B13-3 entitled “Chlorination of Potable Water Supplies in Ontario, January 2001”, requires all supply facilities to provide a prescribed minimum level of disinfection for all water supplied. Although all Waterworks facilities provide the minimum level of chlorine addition required by legislation, the following facilities currently do not comply with additional requirements of the legislation – the MOE is aware of these issues and has provided both time and funding to reach these compliance requirements:

1. Arkell Glenn collectors and Carter Well (expected compliance December 30, 2008 when

current enhanced disinfection upgrades are completed at Woods Station).

At no time in 2007 did the operation of these facilities result in the provision of untreated or unsafe water to customers. Based on regulatory requirements, and including the results of the 2007 Ministry of the Environment inspection of Guelph Waterworks, there were no instances of regulatory non- compliance related to water quality sampling and sample scheduling.

53

SECTION 9 SUMMARY OF SODIUM ANALYTICAL RESULTS

55

Section 9 Summary of Sodium Analytical Results Guelph Waterworks is required to periodically report to the Wellington-Dufferin-Guelph Health Unit (WDGHU) the sodium sampling results for all facilities. This information has been incorporated into this Summary Report in order to effectively disseminate this information to all Waterworks customers and other interested parties. The MOE requires that sodium sampling be conducted every five years for all points of entry into the water distribution system. The results of the 2007 sampling are included in Table K.

Table K - 2007 Sodium Analytical Results

Facility Sodium Result (mg/L)* Burke Well 24 Calico Well 27.8 Clythe Booster Station 20 Dean Well 110 Downey Well 45 Emma Well 64.7 Helmar Well 29.6 Membro Well 120 Paisley Booster Station 47 Park Wells (combined) 111 Queensdale Well 31 Robertson Booster Station 67.8 University Well 70 Water Street Well 86 Woods Station 20 mg/L – milligrams per litre * Sodium levels above 20mg/L are reportable to the MOE every five years. Maximum allowable at any time as an aesthetic objective is 200mg/L

Note: Sodium values are reportable every five years when values are above 20mg/L. Reporting times to the Ministry of the Environment varies from location to location based on the time of the last report and the value of sodium in the source water. Sodium is measured for operational purposes on an annual frequency at all sources – as per above values above 20mg/L do not necessarily require reporting.

57

SECTION 10 SUMMARY OF QUANTITY

OF WATER SUPPLIED

59

Section 10 Summary of Quantity of Water Supplied In 2007, 19 water supplies were operated to satisfy customer water demand. A total of 18,616,944 cubic metres of water was pumped to the water distribution system. This total represents a 0.743 percent decrease from the previous year’s total. A graph showing the ten year trend in total water pumpage is shown in Figure C.

Figure C - Ten Year Trend of Total Annual Water Pumpage

17.5

18.0

18.5

19.0

19.5

20.0

20.5

1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007

Year

Pum

page

(mill

ions

of c

ubic

met

res)

The 2007 total average day demand was 51,005 cubic metres per day. This volume is lower than the current dry perennial water system capacity of 63,000 cubic metres per day. The recent multi-year drought, degradation in water quality, and compliance with new regulations has reduced system capacity below the rated capacity of about 75,000 cubic metres per day. Tables L to W located in Appendix B detail 2007 monthly pumpage summaries from all active water supplies. Table X in Appendix C details 2007 monthly maximum instantaneous flow from all active water supplies.

61

APPENDIX A CONSOLIDATED CERTIFICATE OF APPROVAL

63

APPENDIX B 2007 MONTHLY PUMPAGE SUMMARIES

Table L – 2007 Monthly Pumpages (m3) for Wells (Before Treatment) as Governed by Permits to Take Water

Arkell 1

Arkell 6*

Arkell 7*

Arkell 8*

Arkell Collectors

Arkell Recharge

**

Carter Combined #1 #2

Max Pumpage Volume (m3/day) 3,273 19,640* 19,640* 19,640* 25,000 9,092** 7,856

Maximum Volume (m3/day) 1,632 5,046 4,871 4,680 11,173 0 6,600

Average Volume (m3/day) 525 3,956 3,663 3,176 10,128 0 2,935 January Total Volume (m3/month) 16,266 122,634 113,553 98,550 313,969 0 90,980


Average Volume (m3/day) 94 4,030 4,061 3,919 10,279 0 3,727 February Total Volume (m3/month) 2,619 112,848 113,708 109,740 287,733 0 104,356


Average Volume (m3/day) 904 4,026 3,666 3,300 9,718 0 3,798 March Total Volume (m3/month) 28,029 124,804 113,635 102,300 301,263 0 117,740


Average Volume (m3/day) 179 3,832 3,552 3,111 8,867 0 3,275 April Total Volume (m3/month) 5,361 11,4966 106,574 93,330 266,017 0 98,250

Maximum Volume (m3/day) 1,641 4,531 4,646 4,450 18,314 7,720 6,800

Average Volume (m3/day) 130 3,475 3,311 2,827 12,918 841 2,620 May Total Volume (m3/month) 4,033 107,713 102,636 87,640 400,451 26,070 81,222


Average Volume (m3/day) 740 3,858 3,403 2,825 18,409 7,436 2,816 June Total Volume (m3/month) 22,197 115,740 1,928 84,757 552,277 223,083 84,488

Maximum Volume (m3/day) 5 4,657 4,459 4,180 20,178 7,690 6,470

Average Volume (m3/day) n/a 3,734 3,428 2,870 18,545 6,751 2,537 July Total Volume (m3/month) 11 115,758 106,261 88,980 574,884 209,280 78,660


Average Volume (m3/day) 394 3,855 3,566 3,206 14,190 2,634 3,860 August Total Volume (m3/month) 12,219 11,917 110,551 99,390 439,893 81,660 119,660


Average Volume (m3/day) 869 4,629 4,387 3,839 8,813 536 4,343 September Total Volume (m3/month) 26,057 138,867 131,624 115,180 264,396 16,090 130,280


Average Volume (m3/day) 1,002 3,483 4,764 4,218 7,937 1,259 2,875 October Total Volume (m3/month) 31,056 150,422 147,696 130,750 236,742 39,020 89,140

Maximum Volume (m3/day) 1,730 6,029 5,990 6,060 14,263 7,760 0

Average Volume (m3/day) 1,178 4,538 4,560 3,944 9,103 3,158 0 November Total Volume (m3/month) 35,346 136,143 136,797 118,320 273,083 94,740 0

Maximum Volume (m3/day) 1,630 6,012 5,971 6,060 6,193 0 0

Average Volume (m3/day) 643 5,413 5,283 5,090 5,511 0 0 December Total Volume (m3/month) 19,943 167,793 163,770 157,780 170,834 0 0

Annual Total Volume (m3) 20,3137 1,527,205 1,448,892 1,286,717 5,460,727 689,943 994,776

* Arkell wells 6, 7, and 8 operate under a wellfield permit therefore each well can pump up to the combined rate. ** Recharge Pump has a different rate depending on the time of year and ranges from 157.85 L/s to 552.47 L/s.

Table L – 2007 Monthly Pumpages (m3) for Wells (Before Treatment) as Governed by Permits to Take Water continued...

Burke Calico Dean Downey Emma Helmar Membro

Max Pumpage Volume (m3/day) 6,547 5,237 2,300 5,237 3,100 3,273 6,050

Maximum Volume (m3/day) 5,734 986 1,442 4,313 2,566 1,097 4,154

Average Volume (m3/day) 5,680 894 1,375 4,287 2,537 1,080 3,775 January Total Volume (m3/month) 176,087 27,700 42,617 132,909 78,651 33,495 117,017 Maximum Volume (m3/day) 5,689 1,040 1,508 4,262 2,572 1,084 4,133

Average Volume (m3/day) 5,633 9,25 1,374 4,235 1,634 1,014 3,653 February Total Volume (m3/month) 157,730 25,890 38,461 118,572 45,743 28,383 102,275 Maximum Volume (m3/day) 5,769 994 1,398 4,214 2,536 1,082 4,211

Average Volume (m3/day) 5,612 909 1,355 4,161 2,489 1,072 4,043 March Total Volume (m3/month) 173,986 28,170 42,015 128,996 77,168 33,240 125,347 Maximum Volume (m3/day) 5,693 922 1,392 4,751 2,536 1,090 4,242

Average Volume (m3/day) 5,631 885 1,332 4,102 2,508 1,041 3,992 April Total Volume (m3/month) 168,918 26,556 39,948 127,233 75,231 31,225 119,748 Maximum Volume (m3/day) 5,730 987 1,421 4,119 2,550 1,008 4,023

Average Volume (m3/day) 5,561 899 1,177 4,061 2,492 993 3,673 May Total Volume (m3/month) 172,388 27,859 36,475 125,901 77,265 30,777 113,871 Maximum Volume (m3/day) 5,691 1,019 1,439 4,278 2,533 1,008 4,008

Average Volume (m3/day) 5,613 943 1,342 4,036 2,477 932 3,433 June Total Volume (m3/month) 168,375 28,300 40,271 121,071 74,301 27,957 102,998 Maximum Volume (m3/day) 5,673 1,821 1,376 4,022 2,646 991 3,990

Average Volume (m3/day) 5,577 983 1,311 3,994 2,408 954 3,081 July Total Volume (m3/month) 172,875 30,480 40,638 123,807 78,156 29,582 95,506 Maximum Volume (m3/day) 5,625 1,756 1,368 4,006 2,533 995 3,976

Average Volume (m3/day) 5,524 935 1,247 3,962 2,163 917 3,560 August Total Volume (m3/month) 171,246 28,986 38,651 122,827 67,057 28,421 110,347 Maximum Volume (m3/day) 5,730 987 1,363 3,956 2,531 1,024 3,936

Average Volume (m3/day) 5,546 854 1,234 3,930 2,118 936 3,796 September Total Volume (m3/month) 166,379 25,633 37,033 117,891 63,542 28,900 113,884 Maximum Volume (m3/day) 5,651 977 1,470 3,995 0 986 3,917

Average Volume (m3/day) 5,508 820 1,327 3,923 0 979 3,869 October Total Volume (m3/month) 170,745 25,418 41,139 121,615 0 30,340 119,926 Maximum Volume (m3/day) 5,518 873 1,392 3,978 2,499 1,032 4,072

Average Volume (m3/day) 5,338 759 1,350 3,921 970 960 3,073 November Total Volume (m3/month) 160,151 22,766 40,505 117,617 29,108 28,785 92,188 Maximum Volume (m3/day) 5,608 816 1,413 3,948 2,439 1,037 4,171

Average Volume (m3/day) 5,530 761 1,325 3,939 2,386 925 2,606 December Total Volume (m3/month) 171,435 23,600 41,070 122,123 73,956 28,663 80,779

Annual Total Volume (m3) 2,030,295 321,358 478,823 1,480,562 740,179 359,768 1,293,886

Table L – 2007 Monthly Pumpages (m3) for Wells (Before Treatment) as Governed by Permits to Take Water continued...

Paisley Park Wells* No.1 No.2 Queensdale University Water

Street

Max Pumpage Volume (m3/day) 3,200 10,300* 5,237 3,300 3,400

Maximum Volume (m3/day) 1,193 4794 1,168 1,734 0

Average Volume (m3/day) 914 4658 1,106 1,658 0 January Total Volume (m3/month) 28,331 144,405 34,273 51,388 0 Maximum Volume (m3/day) 1,113 5,018 1,226 1,824 0

Average Volume (m3/day) 612 4,821 1,109 1,634 0 February Total Volume (m3/month) 17,136 25,890 31,043 45,764 0 Maximum Volume (m3/day) 1,110 4,903 1,120 1,664 0

Average Volume (m3/day) 1,068 4,719 1,073 472 0 March Total Volume (m3/month) 33,098 146,283 33,260 14,626 0 Maximum Volume (m3/day) 1,091 4,767 1,136 1,699 0

Average Volume (m3/day) 1,085 4,725 1,076 386 0 April Total Volume (m3/month) 32,549 141,741 32,284 11,588 0 Maximum Volume (m3/day) 1,080 4,840 2,259 2,155 1,944

Average Volume (m3/day) 1,006 4,622 1,130 1,690 274 May Total Volume (m3/month) 31,187 143,277 35,016 58,164 8,497 Maximum Volume (m3/day) 1,069 4,967 1,209 1,944 1,817

Average Volume (m3/day) 1,057 4,530 1,134 1,791 596 June Total Volume (m3/month) 31,723 135,899 34,027 53,744 17,887 Maximum Volume (m3/day) 1,058 4,847 1,186 1,910 1,849

Average Volume (m3/day) 485 4,569 1,116 1,765 653 July Total Volume (m3/month) 15,026 141,634 34,588 54,727 20,246 Maximum Volume (m3/day) 0 4,914 1,164 1,875 1,781

Average Volume (m3/day) 0 4,678 932 1,795 1,211 August Total Volume (m3/month) 0 14,032 28,879 55,649 37,556 Maximum Volume (m3/day) 1,465 4,834 1,188 1,855 1,661

Average Volume (m3/day) 193 4,691 1,142 1,786 1,508 September Total Volume (m3/month) 5,804 140,727 34,258 53,589 45,249 Maximum Volume (m3/day) 1,454 5,029 1,208 1,919 1,726

Average Volume (m3/day) 1,262 4,962 983 1,774 1,203 October Total Volume (m3/month) 39,117 153,822 30,462 54,979 37,288 Maximum Volume (m3/day) 1,420 5,220 1,148 1,818 1,601

Average Volume (m3/day) 1,021 4,908 1,034 1,764 1,290 November Total Volume (m3/month) 30,642 147,245 31,017 52,923 38,713 Maximum Volume (m3/day) 0 5,729 1,001 1,828 2,241

Average Volume (m3/day) 0 4,915 108 1,745 749 December Total Volume (m3/month) 0 152,378 3,357 54,082 23,223

Annual Total Volume (m3) 264,621 1,727,419 362,464 561,223 228,659 * Park Wells have a combined maximum pumpage rate (ie. One well can run up to the maximum rate or both wells combined can run up to the maximum rate)

Table M - 2007 Monthly Pumpages (m3) for Treated Water to the Distribution System as Governed by the Consolidated Certificate of

Approval

Burke Calico Clythe Discharge Dean Downey Emma Helmar

Rated Capacity Daily Volume (m3/day) 6,546 5,237 5,443 2,300 5,237 3,100 3,273

Maximum Volume (m3/day) 5,734 986 4,076 1,442 4,313 2,566 1,097 Average Volume (m3/day) 5,680 894 3,570 1,375 4,287 2,537 1,080 January

Total Volume (m3/month) 176,087 27,700 110,671 42,617 132,909 78,651 33,495 Maximum Volume (m3/day) 5,689 1,040 4,023 1,508 4,262 2,572 1,084

Average Volume (m3/day) 5,633 925 3,402 1,374 4,235 1,634 1,014 February Total Volume (m3/month) 157,730 25,890 95,253 38,461 118,572 45,743 28,383 Maximum Volume (m3/day) 5,769 994 3,901 1,398 4,214 2,536 1,082

Average Volume (m3/day) 5,612 909 3,308 1,355 4,161 2,489 1,072 March Total Volume (m3/month) 173,986 28,170 102,542 42,015 128,996 77,168 33,240 Maximum Volume (m3/day) 5,693 922 3,988 1,392 4,751 2,536 1,090

Average Volume (m3/day) 5,631 885 3,329 1,332 4,102 2,508 1,041 April Total Volume (m3/month) 168,918 26,556 99,857 39,948 127,233 75,231 31,225 Maximum Volume (m3/day) 5,730 987 4,187 1,421 4,119 2,550 1,008

Average Volume (m3/day) 5,561 899 3,445 1,177 4,061 2,492 993 May Total Volume (m3/month) 172,388 27,859 106,786 36,475 125,901 77,265 30,777 Maximum Volume (m3/day) 5,691 1,019 4,412 1,439 4,278 2,533 1,008

Average Volume (m3/day) 5,613 943 3,717 1,342 4,036 2,477 932 June Total Volume (m3/month) 168,375 28,300 111,522 40,271 121,071 74,301 27,957 Maximum Volume (m3/day) 5,673 1,821 4,218 1,376 4,022 2,646 991

Average Volume (m3/day) 5,577 983 3,659 1,311 3,994 2,408 954 July Total Volume (m3/month) 172,875 30,480 113,426 40,638 123,807 78,156 29,582 Maximum Volume (m3/day) 5,625 1,756 4,145 1,368 4,006 2,533 995

Average Volume (m3/day) 5,524 935 3,486 1,247 3,962 2,163 917 August Total Volume (m3/month) 171,246 28,986 108,066 38,651 122,827 67,057 28,421 Maximum Volume (m3/day) 5,730 987 4,244 1,363 3,956 2,531 1024

Average Volume (m3/day) 5,546 854 3,382 1,234 3,930 2,118 936 September Total Volume (m3/month) 166,379 25,633 101,471 37,033 117,891 63,542 28,900 Maximum Volume (m3/day) 5,651 977 3,999 1,470 3,995 0 986

Average Volume (m3/day) 5,508 820 3,309 1,327 3,923 0 979 October Total Volume (m3/month) 170,745 25,418 102,590 41,139 121,615 0 30,340 Maximum Volume (m3/day) 5,518 873 3,855 1,392 3,978 2,499 1,032

Average Volume (m3/day) 5,338 759 3,292 1,350 3,921 970 960 November Total Volume (m3/month) 160,151 22,766 98,753 40,505 117,617 29,108 28,785 Maximum Volume (m3/day) 5,608 816 3,588 1,413 3,948 2,439 1,037

Average Volume (m3/day) 5,530 761 3,204 1,325 3,939 2,386 925 December Total Volume (m3/month) 171,435 23,600 99,323 41,070 122,123 73,956 28,663

Annual Total Volume (m3) 2,030,295 321,358 1,250,260 478,823 1,480,562 740,179 359,768

Table M – 2007 Monthly Pumpages (m3) for Treated Water to the Distribution System as Governed by the Consolidated Certificate of

Approval continued…

Membro Paisley Station

Park Combined Queensdale University

Rated Capacity Daily Volume (m3/day) 6,050 13,738 10,300 5,237 5,108

Maximum Volume (m3/day) 4,154 8,490 4,794 1,168 1,734 Average Volume (m3/day) 3,775 5,999 4,658 1,106 1,658 January

Total Volume (m3/month) 117,017 185,960 144,405 34,273 51,388 Maximum Volume (m3/day) 4,133 5,630 5,018 1,226 1,824

Average Volume (m3/day) 3,653 3,869 4,821 1,109 1,634 February Total Volume (m3/month) 102,275 108,320 25,890 31,043 45,764 Maximum Volume (m3/day) 4,211 4,140 4,903 1,120 1,664

Average Volume (m3/day) 4,043 3,711 4,719 1,073 472 March Total Volume (m3/month) 125,347 115,031 146,283 33,260 14,626 Maximum Volume (m3/day) 4,242 4,270 4,767 1,136 1,699

Average Volume (m3/day) 3,992 3,723 4,725 1,076 386 April Total Volume (m3/month) 119,748 111,680 141,741 32,284 11,588 Maximum Volume (m3/day) 4,023 6,240 4,840 2,259 2,155

Average Volume (m3/day) 3,673 4,069 4,622 1,130 1,690 May Total Volume (m3/month) 113,871 126,140 143,277 35,016 58,164 Maximum Volume (m3/day) 4,008 6,190 4,967 1,209 1,944

Average Volume (m3/day) 3,433 4,665 4,530 1,134 1,791 June Total Volume (m3/month) 102,998 139,960 135,899 34,027 53,744 Maximum Volume (m3/day) 3,990 5,500 4,847 1,186 1,910

Average Volume (m3/day) 3,081 4,431 4,569 1,116 1,765 July Total Volume (m3/month) 95,506 137,370 141,634 34,588 54,727 Maximum Volume (m3/day) 3,976 5,820 4,914 1,164 1,875

Average Volume (m3/day) 3,560 4,327 4,678 932 1,795 August Total Volume (m3/month) 110,347 134,140 14,032 28,879 55,649 Maximum Volume (m3/day) 3,936 5,290 4,834 1,188 1,855

Average Volume (m3/day) 3,796 4,167 4,691 1,142 1,786 September Total Volume (m3/month) 113,884 125,010 140,727 34,258 53,589 Maximum Volume (m3/day) 3,917 4,510 5,029 1,208 1,919

Average Volume (m3/day) 3,869 3,755 4,962 983 1,774 October Total Volume (m3/month) 119,926 116,400 153,822 30,462 54,979 Maximum Volume (m3/day) 4,072 5,410 5,220 1,148 1,818

Average Volume (m3/day) 3,073 3,755 4,908 1,034 1,764 November Total Volume (m3/month) 92,188 112,640 147,245 31,017 52,923 Maximum Volume (m3/day) 4,171 5,080 5,729 1,001 1,828

Average Volume (m3/day) 2,606 3,247 4,915 108 1,745 December

Total Volume (m3/month) 80,779 100,660 152,378 3,357 54,082

Annual Total Volume (m3) 1,293,886 1,513,311 1,727,419 362,464 561,223

Table M- 2007 Monthly Pumpages (m3) for Treated Water to the Distribution System

as Governed by the Consolidated Certificate of Approval continued…

Water Street

Woods Station

Rated Capacity Daily Volume (m3/day) 3,400 65,000

Maximum Volume (m3/day) 0 26,420 Average Volume (m3/day) 0 22,499 January

Total Volume (m3/month) 0 697,480 Maximum Volume (m3/day) 0 30,210

Average Volume (m3/day) 0 24,067 February Total Volume (m3/month) 0 673,870 Maximum Volume (m3/day) 0 26,810

Average Volume (m3/day) 0 23,730 March Total Volume (m3/month) 0 735,640 Maximum Volume (m3/day) 0 29,830

Average Volume (m3/day) 0 23,769 April Total Volume (m3/month) 0 713,080 Maximum Volume (m3/day) 1,944 29,410

Average Volume (m3/day) 274 23,592 May Total Volume (m3/month) 8,497 731,340 Maximum Volume (m3/day) 1,817 34,260

Average Volume (m3/day) 596 28,083 June Total Volume (m3/month) 17,887 842,480 Maximum Volume (m3/day) 1,849 31,540

Average Volume (m3/day) 653 27,396 July Total Volume (m3/month) 20,246 849,270 Maximum Volume (m3/day) 1,781 34,210

Average Volume (m3/day) 1,211 25,433 August Total Volume (m3/month) 37,556 788,420 Maximum Volume (m3/day) 1,661 29,380

Average Volume (m3/day) 1,508 23,925 September Total Volume (m3/month) 45,249 717,760 Maximum Volume (m3/day) 1,726 27,600

Average Volume (m3/day) 1,203 22,357 October Total Volume (m3/month) 37,288 693,070 Maximum Volume (m3/day) 1,601 24,770

Average Volume (m3/day) 1,290 20,760 November Total Volume (m3/month) 38,713 622,810 Maximum Volume (m3/day) 2,241 24,330

Average Volume (m3/day) 749 19,587 December Total Volume (m3/month) 23,223 607,210

Annual Total Volume (m3) 228,659 867,2430

APPENDIX C 2007 MONTHLY MAXIMUM INSTANTANEOUS

FLOW SUMMARIES

Table N - 2007 Monthly Flows (L/s) for Wells (Before Treatment) as Governed by Permits to Take Water

Arkell 1

Arkell 6*

Arkell 7*

Arkell 8*

Arkell Collectors

Arkell Recharge

**

Carter*** #1 #2

Permit Flow Rate (L/s) 37.88 228.33* 228.33* 228.33* 433.30 157.85** 136.38***

Maximum Flow (L/s) 19.46 71.33 72.40 71.90 166.00 0.00 80.00 80.00January Average Flow (L/s) 7.09 58.45 53.59 48.91 117.66 0.00 40.34

Maximum Flow (L/s) 19.61 71.98 71.90 71.38 150.00 0.00 80.00 80.00February Average Flow (L/s) 2.79 62.65 60.08 58.07 120.11 0.00 46.69

Maximum Flow (L/s) 19.44 72.75 71.40 71.61 141.20 0.00 80.00 80.00March Average Flow (L/s) 16.14 66.34 60.95 52.76 119.68 0.00 33.55

Maximum Flow (L/s) 19.45 72.97 69.90 70.75 177.00 0.00 40.00 40.00April Average Flow (L/s) 16.40 68.35 64.84 54.53 141.60 0.00 27.34

Maximum Flow (L/s) 19.46 72.18 71.40 71.60 227.50 88.00 77.50 77.50May Average Flow (L/s) 11.95 59.39 58.49 52.97 156.28 11.10 21.86

Maximum Flow (L/s) 19.51 72.15 72.40 70.70 241.00 90.00 80.00 80.00June Average Flow (L/s) 11.92 59.58 60.28 55.76 198.57 88.10 31.34

Maximum Flow (L/s) 19.44 72.14 71.40 70.70 232.00 89.00 40.00 40.00July Average Flow (L/s) 2.43 65.71 60.79 57.93 213.79 87.21 41.29

Maximum Flow (L/s) 19.46 73.73 70.10 71.65 214.0 88.00 40.00 40.00August Average Flow (L/s) 7.46 68.36 64.16 56.60 165.2 33.42 27.75

Maximum Flow (L/s) 19.81 72.61 74.20 71.98 124.0 88.00 45.00 45.00September Average Flow (L/s) 12.99 66.44 63.03 56.50 106.0 11.47 26.84

Maximum Flow (L/s) 19.79 75.00 72.10 71.93 187.0 90.00 80.00 80.00October Average Flow (L/s) 13.96 69.06 66.36 66.12 94.8 25.29 27.10

Maximum Flow (L/s) 20.10 73.62 72.70 74.41 167.0 91.00 0 0 November Average Flow (L/s) 16.38 68.63 71.08 61.45 106.1 38.33 0

Maximum Flow (L/s) 19.37 76.60 74.70 74.71 94.5 0.00 0 0 December Average Flow (L/s) 10.16 69.53 65.64 65.59 65.0 0.00 0

* Arkell wells 6, 7, and 8 operate under a wellfield permit therefore each well can pump up to the combined rate. ** Recharge Pump has a different rate depending on the time of year and ranges from 157.85 L/s to 552.47 L/s. *** Carter Wells have a combined permitted instantaneous flow rate of 136.38 L/s. The flow may be derived from either or both of the wells in combination subject to limitations in the CC of A – maximum instantaneous flow rates are shown for both wells because they each operated on separate occasions throughout the month and are not additive - thee PTTW instantaneous flow rate was not exceeded

Table N – 2007 Monthly Flows (L/s) for Wells (Before Treatment) as Governed by Permits to Take Water continued...

Burke Calico Dean Downey Emma Helmar Membro

Permit Flow Rate (L/s) 75.77 90.92 39.93 90.92 53.82 37.88 105.03

Maximum Flow (L/s) 71.20 16.00 20.70 51.10 30.00 16.50 59.25 January Average Flow (L/s) 61.46 12.70 15.66 50.43 29.68 14.63 54.10

Maximum Flow (L/s) 70.40 16.02 28.02 50.30 31.39 16.42 58.50 February Average Flow (L/s) 69.89 13.55 15.86 49.86 29.99 14.31 51.01

Maximum Flow (L/s) 69.74 16.00 21.56 50.00 30.51 16.30 58.97 March Average Flow (L/s) 69.74 11.19 15.34 49.25 29.46 14.83 49.94

Maximum Flow (L/s) 70.30 15.98 21.47 49.40 30.14 16.12 56.03 April Average Flow (L/s) 67.77 12.69 17.46 48.69 29.37 12.19 51.49

Maximum Flow (L/s) 70.50 16.00 20.58 48.80 30.00 16.11 55.02 May Average Flow (L/s) 67.78 11.20 14.73 47.91 29.40 11.84 46.07

Maximum Flow (L/s) 70.60 15.77 20.51 49.90 30.40 16.28 52.56 June Average Flow (L/s) 67.72 11.95 17.42 47.47 29.41 11.71 48.05

Maximum Flow (L/s) 70.70 15.46 20.00 47.70 30.48 16.18 52.83 July Average Flow (L/s) 63.54 12.38 17.45 47.11 29.14 11.78 45.05

Maximum Flow (L/s) 70.10 15.75 19.59 47.30 31.49 15.81 57.93 August Average Flow (L/s) 53.59 14.34 16.78 46.57 25.19 13.55 46.72

Maximum Flow (L/s) 70.70 15.22 19.64 47.10 29.87 15.84 52.41 September Average Flow (L/s) 63.11 12.46 16.68 46.17 26.06 13.02 43.69

Maximum Flow (L/s) 71.30 14.71 20.00 47.20 0.00 15.88 51.02 October Average Flow (L/s) 70.24 12.57 18.04 46.50 0.00 15.15 48.89

Maximum Flow (L/s) 71.20 12.89 19.90 47.20 29.72 15.97 55.20 November Average Flow (L/s) 61.20 10.53 16.01 46.60 11.42 12.05 41.34

Maximum Flow (L/s) 70.60 12.88 19.67 47.00 28.38 16.34 55.91 December Average Flow (L/s) 61.18 9.38 16.16 46.44 28.10 12.08 34.48

Table N – 2007 Monthly Flows (L/s) for Wells (Before Treatment) as Governed by Permits to Take Water continued...

Paisley Park Wells* No.1 No.2 Queensdale University Water

Street

Permit Flow Rate (L/s) 55.55 178.82* 178.82* 60.62 57.30 59.03

Maximum Flow (L/s) 13.91 54.91 54.75 16.33 24.00 0 January Average Flow (L/s) 12.20 54.63 41.71 16.32 22.18 0

Maximum Flow (L/s) 15.14 56.74 56.42 16.34 22.84 0 February Average Flow (L/s) 8.60 51.85 48.34 16.06 21.09 0

Maximum Flow (L/s) 12.97 54.13 54.48 16.33 22.06 24.22 March Average Flow (L/s) 12.61 25.83 49.07 13.95 15.42 23.72

Maximum Flow (L/s) 15.58 55.27 55.01 16.33 22.07 25.12 April Average Flow (L/s) 12.64 29.94 25.42 15.23 21.76 23.05

Maximum Flow (L/s) 16.29 56.48 55.25 16.33 29.93 30.56 May Average Flow (L/s) 12.86 32.77 21.21 15.22 24.55 24.70

Maximum Flow (L/s) 13.70 56.25 55.33 16.33 24.85 28.72 June Average Flow (L/s) 12.35 33.86 20.05 15.78 21.26 23.59

Maximum Flow (L/s) 12.37 54.88 55.64 16.33 27.17 28.94 July Average Flow (L/s) 5.58 27.32 24.65 14.99 19.93 22.34

Maximum Flow (L/s) 0.00 55.99 58.67 16.33 26.58 24.70 August Average Flow (L/s) 0.00 24.33 30.02 13.80 24.06 15.45

Maximum Flow (L/s) 0.00 0.00 55.05 15.83 25.04 24.53 September Average Flow (L/s) 2.68 18.04 34.31 15.30 21.01 18.11

Maximum Flow (L/s) 16.46 56.71 56.02 15.83 25.05 27.34 October Average Flow (L/s) 15.39 38.33 17.98 13.52 22.18 15.47

Maximum Flow (L/s) 0.00 56.67 56.20 16.30 25.04 25.17 November Average Flow (L/s) 11.96 39.58 15.58 14.13 22.17 16.20

Maximum Flow (L/s) 0.00 54.56 64.43 15.66 25.54 27.60 December Average Flow (L/s) 0.00 28.55 27.89 1.96 23.30 9.68

* Park Wells have a combined maximum flow rate (ie. One well can run up to the maximum rate or both wells combined can run up to the maximum rate)

Table O - 2007 Monthly Instantaneous Flows (L/s) for Treated

Water to the Distribution System as Governed by the Consolidated Certificate of Approval

Burke Calico Clythe Discharge Dean Downey Emma Helmar

Rated Capacity Instantaneous Flow (L/s) 75.76 60.61 189.00 63.00 60.61 35.87 37.88

Maximum Flow (L/s) 68.20 11.72 62.77 16.69 50.92 30.00 13.10 January Average Flow (L/s) 66.96 10.72 46.51 16.10 50.21 29.68 12.69

Maximum Flow (L/s) 67.40 11.21 63.36 19.40 50.25 31.39 13.60 February Average Flow (L/s) 66.55 10.72 47.84 16.13 49.01 29.99 12.16

Maximum Flow (L/s) 65.63 12.00 67.00 16.48 49.80 30.51 13.00 March Average Flow (L/s) 65.63 10.63 45.05 16.10 49.19 29.46 12.52

Maximum Flow (L/s) 67.60 10.73 61.60 16.77 49.42 30.14 13.00 April Average Flow (L/s) 66.20 10.27 44.54 15.76 48.58 29.37 12.33

Maximum Flow (L/s) 68.50 15.87 62.00 16.18 48.62 30.00 13.00 May Average Flow (L/s) 66.35 10.64 42.40 15.08 47.84 29.40 11.73

Maximum Flow (L/s) 67.50 11.57 62.82 17.00 47.69 30.40 11.90 June Average Flow (L/s) 66.29 10.83 49.54 15.95 47.24 29.41 11.12

Maximum Flow (L/s) 66.70 11.40 61.40 16.74 47.64 30.48 11.70 July Average Flow (L/s) 65.68 10.83 49.19 15.77 46.89 29.14 11.39

Maximum Flow (L/s) 66.80 10.82 60.64 15.94 47.30 31.49 16.20 August Average Flow (L/s) 65.57 9.94 47.57 15.49 46.47 25.19 11.20

Maximum Flow (L/s) 68.70 11.65 63.14 15.86 49.95 29.87 12.20 September Average Flow (L/s) 65.81 9.77 45.44 14.92 46.27 26.06 11.64

Maximum Flow (L/s) 67.20 11.78 65.82 16.20 47.23 0.00 11.70 October Average Flow (L/s) 65.17 9.88 41.42 15.61 46.47 0.00 11.43

Maximum Flow (L/s) 65.49 10.05 59.55 16.71 47.24 29.72 12.10 November Average Flow (L/s) 64.52 8.86 43.42 15.83 46.51 11.42 11.38

Maximum Flow (L/s) 66.50 9.67 58.20 16.66 47.20 28.38 12.40 December Average Flow (L/s) 65.19 8.90 42.53 15.85 46.37 28.10 11.30

Table O - 2007 Monthly Instantaneous Flows (L/s) for Treated Water to the Distribution System as Governed by the Consolidated Certificate of

Approval continued…

Membro Paisley Park Combined Queensdale Robertson University

Rated Capacity Instantaneous Flow (L/s) 70.02 159.00 119.21 60.61 N/A 59.12

Maximum Flow (L/s) 49.60 114.00 57.46 13.70 146.70 20.20 January Average Flow (L/s) 48.71 89.03 55.18 12.90 56.24 19.52

Maximum Flow (L/s) 49.92 113.00 58.52 13.50 121.59 19.90 February Average Flow (L/s) 48.23 60.27 55.95 12.76 84.14 19.42

Maximum Flow (L/s) 50.10 60.00 56.12 13.60 92.37 19.70 March Average Flow (L/s) 48.14 54.17 54.79 12.73 83.43 16.18

Maximum Flow (L/s) 50.40 105.00 56.48 13.80 93.22 19.90 April Average Flow (L/s) 47.88 49.42 54.86 13.12 82.31 19.63

Maximum Flow (L/s) 48.10 113.00 57.65 13.90 91.34 25.70 May Average Flow (L/s) 43.73 60.61 55.47 13.36 82.50 22.07

Maximum Flow (L/s) 49.90 57.00 57.17 14.30 95.17 22.30 June Average Flow (L/s) 46.73 53.77 55.39 13.36 87.07 21.51

Maximum Flow (L/s) 50.10 110.00 56.66 16.50 92.52 21.80 July Average Flow (L/s) 42.45 59.70 51.88 13.54 86.50 21.35

Maximum Flow (L/s) 47.40 56.00 60.12 13.90 93.32 21.70 August Average Flow (L/s) 45.02 62.14 55.03 11.57 93.32 20.40

Maximum Flow (L/s) 47.70 56.00 68.02 14.10 91.78 21.80 September Average Flow (L/s) 46.22 57.51 55.53 13.40 84.87 21.05

Maximum Flow (L/s) 47.20 56.00 58.60 13.70 92.62 21.90 October Average Flow (L/s) 45.58 56.02 57.52 11.82 88.18 20.89

Maximum Flow (L/s) 48.20 56.00 58.22 13.70 91.47 21.70 November Average Flow (L/s) 40.66 55.52 56.58 12.23 79.32 20.89

Maximum Flow (L/s) 49.50 40.00 66.92 11.50 90.30 21.30 December Average Flow (L/s) 35.07 74.60 57.44 1.46 65.22 20.75

Table O - 2007 Monthly Instantaneous Flows (L/s) for Treated Water to the Distribution System as

Governed by the Consolidated Certificate of Approval continued…

Water Street

Woods Station

Rated Capacity Instantaneous Flow (L/s) 39.35 752.31

Maximum Flow (L/s) 0 494.00 January Average Flow (L/s) 0 281.21

Maximum Flow (L/s) 0 463.00 February Average Flow (L/s) 0 269.21

Maximum Flow (L/s) 24.22 463.00 March Average Flow (L/s) 23.72 279.29

Maximum Flow (L/s) 25.12 426.00 April Average Flow (L/s) 23.05 260.97

Maximum Flow (L/s) 30.56 457.10 May Average Flow (L/s) 24.70 328.06

Maximum Flow (L/s) 28.72 601.00 June Average Flow (L/s) 23.59 333.13

Maximum Flow (L/s) 28.94 467.00 July Average Flow (L/s) 22.34 375.96

Maximum Flow (L/s) 24.70 572.00 August Average Flow (L/s) 15.45 324.94

Maximum Flow (L/s) 24.53 518.00 September Average Flow (L/s) 18.11 306.72

Maximum Flow (L/s) 27.34 512.00 October Average Flow (L/s) 15.47 281.25

Maximum Flow (L/s) 25.17 418.00 November Average Flow (L/s) 16.20 285.10

Maximum Flow (L/s) 27.60 431.90 December Average Flow (L/s) 9.68 284.31

Addendum

ENVIRONMENTAL SERVICES DEPARTMENT

TO: All Recipients of City of Guelph Waterworks 2007 Annual and Summary Report FROM: Waterworks DEPARTMENT: ENVIRONMENTAL SERVICES DATE: October 8, 2008 SUBJECT: Notice of Addendum to City of Guelph Waterworks 2007 Annual and Summary Report Please note that during the 2007/2008 Annual Inspection of the Gazer Mooney Sub-Division Distribution System on August 20th, 2008, it was noted by a Provincial Officer that an incorrect interpretation of Ontario Regulation 170/03 – Schedule 6 was published in the notes section of Table C2 – 2007 Gazer/Mooney Distribution System Bacteriological Results Summary. The text of the interpretation is captured by;

“Please note that a weekly…a total of 37-73 samples annually”

As per documentation in the Reporting and Corrective Actions Section of the Final Gazer Mooney Inspection Report, the statement does not allow for the accurate summarization of the information required by section 11 (6) of the Ontario Regulation 170/03. As a Corrective Action the City of Guelph Waterworks is required to publish in all forms and make available an addendum in all locations where the original reports were made available. NOTICE OF ADDENDUM - Please delete or disregard the following from the notes section of Table C2 – 2007 Gazer/Mooney Distribution System Bacteriological Results Summary.

“Please note that a weekly sample for O. Reg. 170/03 is defined as a sample that is taken not less than 5 days and not more than 10 days from the last valid sample. Depending on individual sample schedules a sample that is taken weekly may result in a total of 37 – 73 samples annually.”

Please contact the City of Guelph Waterworks for Further Details at 519-837-5627

WATERWORKS DIVISION

T 519-837-5727

Page 1 of 1 F 519-822-8837

E [email protected]

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