water distribution system annual report - ville de dieppe · dieppe water distribution system...

Water Distribution System

Annual Report 2010

Submitted for

Environment and Local Government

Drinking Water Approvals

Prepared By:

Serge Robichaud

February 01, 2011

Dieppe Water Distribution System Annual Report 2010

INTRODUCTION

The purpose of this document is to satisfy condition 43 of the Certificate of Approval to operate a water

distribution system W-249 for the City of Dieppe. The following Water Distribution Annual Report is

intended to provide the Department of Environment and Local Government with updated information

related to the drinking water distribution and facilities in the City of Dieppe.

a) MONITORING RESULTS

Please find attached all daily monitoring data from our SCADA System which monitors various

sites throughout our different pressure zones for Free Available Chlorine, Turbidity and PH, Total

Coliform, E-Coli, HPC test and THM test results are also recorded.

In addition, Public Work Utility Water Workers flush 16 sites weekly, 14 sites bi-monthly and

141 sites monthly to ensure chlorine residuals are maintained above 0.2 mg/l at all dead-ends.

These sites are periodically reviewed and updated throughout the year.

b) WATER PRODUCTION

Table 1: Water Production Data for the City of Dieppe 2010

2010 TOTAL YEARLY PRODUCTION = 2,774,257 m

3

2010 AVERAGE DAILY CONSUMPTION = 7,600 m3 / day

Month

2009

Monthly

Production

( m3 )

2010

Monthly

Production

( m3 )

Month

2009

Monthly

Production

( m3 )

2010

Monthly

Production

( m3 )

January 220,797 218,808 July 220,219 243,604

February 195,435 199,893 August 229,569 259,469

March 219,014 221,997 September 222,744 242,776

April 208,953 213,965 October 216,254 238,440

May 225,768 246,674 November 208,418 228,821

June 229,558 227,357 December 216,898 232,453


c) OPERATIONAL HIGHLIGHTS

1. Significant Events

There were a total of nine (9) watermain breaks during the year 2010. They were all circular

breaks on Ductile Iron and Cast Iron pipes and had minimum effects on the water system.

Two (2) significant events took place in the water system

Avant-Garde and Gauvin Road (New watermain installation)

Total Coliform counts were detected on the temporary water system installed to serve

customers during the installations of new watermain. People were advised immediately to boil

their water and all customers were connected to the new watermain within days. All

temporary watermain installations were checked daily for chlorine residuals and tested weekly

for bacteria and although the cause of the coliform count was unknown, the very hot summer

we experienced definitely proved challenging to maintain good water quality.

Oxiard Street

During construction of a new subdivision in the St-Anselme zone, an existing watermain was

ruptured causing a significant decrease in pressure throughout the zone. Strategic flushing,

chlorine and turbidity samples along with three (3) bacteriological tests were taken throughout

the zone by certified water operators. All tests results showed adequate chlorine and turbidity

levels and no positive counts in the three (3) bacteria tests results.

2. System Improvements, Changes or Additions

Certified Dieppe Utility Water Workers once again were kept very busy performing swab

removal, pressure testing, disinfecting and commissioning of 6 km of new watermain

installations in 2010. The following describes system improvements, changes and/or additions

each categorized by: 10 – New Subdivision Developments, 3 - Private Developments, 3 -

Capital Projects:

New Subdivisions

1. Parc Bonaventure – Unit 39, Phase 5 = 340 m of 200mmØ (online March 11/10)

2. Pointe-aux-Renards = 423 m of 200mmØ (online May 17/10)

= 21 m of 150mmØ (online May 17/10)

3. Village Metropolitain = 79 m of 200mmØ (online May 26/10)


4. Jardin Beausoleil – Unit 3, Phase 1 = 422 m of 200mmØ (online Feb 11 and June 9 /10)

= 24 m of 150mmØ (online Feb 11 and June 9 /10)

5. Domaine Belle Forêt – Phase 1 = 293 m of 300mmØ (online June 2/10)

= 397 m of 200mmØ (online June 2/10)

= 25 m of 150mmØ (online June 2/10)


6. Parc Bonaventure – Unit 39, Phase 6 = 234 m of 200mmØ (online Aug. 23/10)

= 7 m of 150mmØ (online Aug. 23/10)

7. Aviation = 1000 m of 350mmØ (online Oct. 18/10)

8. Belle-Forêt (rue des Érables) = 116 m of 200mmØ (online Nov. 2/10)

= 20 m of 150mmØ (online Nov. 2/10)

9. Belle-Forêt (rue des Frènes) = 129 m of 200mmØ (online Nov. 2/10)

10. Domaine Le Vignoble – Unit 2, Phase 3 = 265 m of 200mmØ (online Dec. 14/10)

= 21 m of 150mmØ (online Dec. 14/10)

Total 350mmØ PVC = 1000 m




Total = 3822 m

Private Developments

1. Domaine du Ruisseau – Phase 13 = 123 m of 200mmØ (online May 16/10)


2. 33 Sifroi Court (32 units) = 50 m of 150mmØ (online March 11/10)

3. Malley’s Industries = 53 m of 200mmØ (online May 16/10)


Total 200mmØPVC = 176 m

Total 150mmØPVC = 266 m

Total = 442 m


Capital Projects

1. Avant-Garde = 563 m of 200mmØ (online July 7 and 27/10)

= 41 m of 150mmØ (online July 7 and 27/10)

2. Paul Street = 721 m of 300mmØ (online July 14/10 and Sept. 27/10)

= 37 m of 250mmØ (online July 14/10 and Sept. 27/10)



3. Gauvin Road = 125 m of 300mmØ (online Sept. 20/10 and Oct. 13/10)

= 183 m of 200mmØ (online Sept. 20/10 and Oct. 13/10)

= 18 m of 150mmØ (online Sept. 20/10 and Oct. 13/10)





Total = 1698 m

Temporary Watermain

Four (4) temporary water systems totalling 2.6 km of 50 mm diameter pipe were installed for

the capital project watermain renewals on Avant-Garde, Gauvin Road, Dover Rd and Paul

Street. All piping were tested, disinfected and commissioned by certified Utility Water Workers.

All temporary water systems were supplied by the City’s fire hydrants and connected with

portable backflow prevention device units and a water meter. Daily chlorine residual checks and

weekly microbiological tests were taken to ensure continuous good water quality was

maintained in the temporary water system.

d) ALARM LOG

Here are the critical alarms during the calendar year. Both alarms were at the Industrial

Park Pumphouse and Reservoir.

Date Time Alarm Type Response Corrective Action

January 6 3:10 am High Turbidity Check Turbidity Clean and Calibrate

August 28 3:00 am Chlorine system Low Chlorine Tank

Level

Fill the Chlorine tank

and fix leak at the

chlorine inlet line

Table 2: City of Dieppe Alarm Log 2010


e) BACKFLOW PREVENTION AND CROSS & CONNECTION CONTROL

ACTIVITIES

The City of Dieppe implemented a cross connection program and has completed the inspections

of all its industrial, institutional, commercial and multi-residential customers to ensure that all

internal plumbing conforms to the City of Dieppe Water and Sewer By-Law no. 78-5. We are

currently sending the notices for correction to our customers. The City of Dieppe is reminding

to all of its customers the importance of this program which is designed to protect our water

quality and the safety of our entire community.

f) FLUSHING ACTIVITIES

In summary, the purpose of a Uni-Directional Flushing Program is to systematically and uni-

directionally flush the distribution system through the manipulation of valves and fire hydrants.

Clean water is flushed from the source to the extremities, from larger to smaller pipes and from

cleaner to dirtier pipes.

The City of Dieppe continued with Aqua Data Atlantic for the updating and configuration of the

computer programming of the UDF program. Once the program was completed, the City of

Dieppe certified Water Operators solely performed the Uni-Directional Flushing program in 31

days.

The following summarizes the results of the Uni-Directional Flushing program for 2010

compared to the years 2009, 2008 and 2002. It shows the effectiveness of the program since

less time and water is required to achieve a clean system:

Table 3: Uni-Directional Flushing Data for the City of Dieppe 2010

Item Year 2002 Year 2008 Year 2009 Year 2010

Total number of fire

hydrants in water system 740 1108 1140 1194

Number of fire hydrants

flushed 213 263 281 278

Total number of valves in

water system 724 1176 1205 1291

Number of valves used 269 386 408 426

Total amount of watermain

in system 103 km 130 km 139 km 146.4 km

Length of watermain

flushed 96 km 122.7 km 128.5 km 125.9 km

Total flushing time 120 hrs 98 hrs 113 hrs 112 hrs

Total amount of water

volume used 22,712 m ³

18,927 m ³

24,227 m ³ 23,848 m ³


g) OPERATIONAL INFORMATION

1. Staffing

No change in our staff. At the present time the total numbers of employees working

directly with water are one (1) Water and Sewer Manager, four (4) Water System

Operators and four (4) Utility Water Workers.

2. Training

Reggie LeBlanc (Water and Sewer Manager)

First Aid

CWWA (Canadian Water and Wastewater Association)

Excelling as Managers

Martin LeBlanc (Water System Operator)

First Aid

Arc Flash

Confined Space and High Angle Rescue

Embridge Gas

M40 Gas Monitor Training

Building a Stainable Foundation for Infrastructure Renewal

Nova Communication Showcase

Serge Robichaud (Water System Operator)

First Aid

Arc Flash

NB Backflow Prevention meeting


Neptune Equinox / ARB_ N Sight Refresher Training


Gabriel Belliveau (Water System Operator)

First Aid


Water Tower Rescue

Protecting and Conserving Water Resources

Lock out Tag Out

WHMIS

CLA-VAL Maintenance training



Christian Vienneau (Water System Operator)

First Aid


Accessible Water & Wastewater Solutions

Neptune Equinox / ARB_N Sight Refresher Training

ACWWA (Atlantic Canada Water Wastewater Association)

Basic Electrical & Safety Course

Sansom Equipment

Industrial Communications and SCADA Systems

People Management

Asset and Operations Management


Serge Bisson (Utility Water Worker)

First Aid

Confined Space

MPWWA (Maritime Province Water Wastewater Association)


Basic Electrical & Safety Course

Denis Bourgeois (Utility Water Worker)

First Aid


Water Tower Rescue


MPWWA (Maritime Province Water Wastewater Association)

3. Certification

There were no additional certification levels achieved by our system staff in the

calendar year.

h) PUBLIC RELATIONS

1. Notification

Here are a few example of notification that has been issued for the City of Dieppe

residences and commercial customers of various water system activities such as line

flushing, watermain closure, water conservation and cross connection program.


Public Notices Flushing of Hydrants

The flushing of fire hydrants will be done as part of the maintenance program of the

City of Dieppe from April 23rd to June 8th, Monday to Friday, 8:00 a.m. to 5:00 p.m.

Water may be discolored during this period. Residents are advised to run their water

and check it before laundering.

We regret any inconvenience this work may cause.

PUBLIC NOTICE

AMIRAULT STREET

The City of Dieppe’s Public Works Department will be undertaking work on the water system in

your area on Wednesday, July 9, 2010 from 8:30 a.m. to 6:00 p.m., assuming no unforeseen

delays. During this time period, YOUR WATER SERVICE WILL BE SHUT OFF. To

minimize the potential inconvenience from this disruption to your service, we recommend the

following:

1) Close the water valve where the water line enters your basement.

2) When the water service is restored, run your cold water a few minutes or until

clear water shows. ONLY AFTER, run your hot water until clear hot water

shows.

We regret any inconvenience. Thank you for your cooperation and understanding


2. Brochures

Brochure 1 Water conservation Tips

Brochure 2 Water conservation for tenants


Brochure 3 Cross Connection Program

In May 2010, the City of Dieppe in conjunction with the National Public Works Week did a

presentation to the Amirault elementary school with a visit to our Water Tower. This helped to

better inform the younger citizens of Dieppe. Positive feedback came from the teachers of the

schools and also the parents. The City of Dieppe will be continuing this event during the Public

Works Week to the same school with different students every year.


3. Complaints

During the calendar year there were a total of 14 complaints. Five (5) were low pressure

complaints, three (3) were discoloration in the water, two (2) were high pressure complaints,

two (2) were taste & odor, one (1) was a frozen service and one (1) was a service leak.

i) NEW CONNECTIONS / WATERMAINS

1. New connections / repairs completed in 2010

Location Type Date

1. Regis / Paul St. Watermain Repair January 19

2. Gould / Acadie Watermain Repair February 10

3. Orleans Watermain Repair March 23

4. Chartersville Rd. Watermain Repair April 7

5. Lakeburn Service Repair April 7

6. Syrah Service Repair April 13

7. Malenfant Blvd. Valve Repair April 21

8. Oxiard Watermain Repair April 23

9. Paul St. Service Repair May 24

10. Canaan New Connection May 25

11. Beaumont / Bernard Valve Repair June 14

12. Avant-Garde New Valve Installation June 22

13. Parc Rotary New Connection July 8

14. Amirault Watermain Repair July 15

15. Gauvin Rd. Watermain Repair August 17

16. Thibodeau New Connection August 18

17. Champlain (Mathieu-Martin) Valve Repair August 23

18. Thomas / Gauvin Rd. New Connection August 23

19. Thomas / Gauvin Rd. New Connection September 2

20. Amirault Watermain Repair September 17

21. Champlain St. New Connection September 29

22. Champlain St. Valve Repair October 7

23. Pault St. Valve Repair October 10

24. Champlain Place Valve Repair October 18

25. Eunice Watermain Repair October 21

26. Champlain Place Fire Hydrant Relocation November 4

27. Chartersville Rd. Watermain Repair November 15

28. Moncton Airport Watermain Repair December 29

Table 4: Watermain New Connection and Repair for the City of Dieppe 2010


2. Analytical results for each new connection / repair

Location for new

connections or Repair

Bacteria Test

Location

Total

Coliform E coli Free Chlorine

1. Regis / Paul St. 473 Pault St ND ND 0.81 ppm

2. Gould / Acadie 525 Acadie ND ND 0.65 ppm

3. Orleans 167 Orleans ND ND 0.58 ppm

4. Chartersville Rd. 264 Chartersville ND ND 0.69 ppm

5. Lakeburn 166 Lakeburn ND ND 0.79 ppm

6. Syrah 93 Syrah ND ND 0.71 ppm

7. Malenfant Blvd. 700 Malenfant ND ND 0.45 ppm

8. Paul St. 473 Paul St. ND ND 0.87 ppm

9. Canaan 155 Canaan ND ND 0.57 ppm

10. Beaumont / Bernard 386 Beaumont ND ND 0.76 ppm

11. Avant-Garde 475 Avant-Garde ND ND 0.64 ppm

12. Parc Rotary 200 rue du Parc ND ND 0.69 ppm

13. Amirault 1824 Amirault ND ND 0.69 ppm

14. Gauvin Rd. 660 Gauvin Rd ND ND 0.60 ppm

15. Thibodeau 600 B Canso ND ND 0.68 ppm

16. Champlain (Mathieu-

Martin) 511 Champlain ND ND 0.53 ppm

17. Thomas / Gauvin Rd. 121 Thériault

317 Thomas ND ND

0.49 ppm

0.57 ppm

18. Thomas / Gauvin Rd. 668 Gauvin Rd ND ND 0.80 ppm

19. Amirault 457 Amirault ND ND 0.68 ppm

20. Champlain St. 2178 Champlain ND ND 1.08 ppm

21. Champlain St. 1080 Champlain ND ND 0.75 ppm

22. Paul St. 459 Paul St. ND ND 0.82 ppm

23. Champlain Place Toys R Us ND ND 0.71 ppm

24. Eunice 449 Eunice ND ND 0.72 ppm

25. Champlain Place Wal-Mart ND ND 0.85 ppm

26. Chartersville Rd. 779 Chartersville ND ND 0.61 ppm

27. Moncton Airport Old Terminal ND ND 0.71 ppm

ND – Not Detected

Table 5: Analytical results for new Connection and Repair for the City of Dieppe 2010

j) ADDITIONAL COMMENTS

The water entering the city is of excellent quality. Over the years, system improvements from

capital projects, new construction, upgrades to water facilities and regular yearly maintenance

programs have been projects that water utility staff continually work on to ensure that Dieppe

customers continue to receive excellent water quality with minimum interruptions.

water distribution system annual report - ville de dieppe · dieppe water distribution system...

Documents