2005 Waterworks Compliance Report

Prepared by David Atkinson, Superintendent of Utilities

1 Pembroke St E

Pembroke ON K8A 3J5

Phone:  (613) 732-0544

email:  datkinson@pembroke.ca

 

Table of Contents

a.   Projects 2005 and Forecasted Projects 2006

b.   Plant Description

  - Sampling per 170.03

  - Water Plant and Distribution Occurrence of Adverse Water Quality

c.   Calibrations

d.   Laboratory Results

  - Laboratory Organic and Inorganic Results (Schedule 23 & 24)

  - Raw Water Bacteriological Data

  - Treated Water Bacteriological Data

  - Distribution Systems

e.   Treated Water Flows

f.   Distribution Bacteriological Results and Free Chlorine Residuals

g.   Summary of Quantity of Water Supplied in 2005

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Municipality	Pembroke
Plant	Water Purification Plant
Capacity	36 368m3
Water Source	Ottawa River

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Chemicals Used

  Chlorine Gas

  Pre-hydrolated Aluminium Sulphate

  Sodium Silicate

  Sulphuric Acid

  Soda Ash

   Sodium Hypochlorite

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Projects completed in 2005

Construction of backwash storage tank and filter to waste valves to reduce TU spikes after backwashes is on-line. A Suspended Solid meter was purchased to ensure accurate reading and trending of backwash waste. De-chlorination equipment for the discharge water to the Ottawa River added to reduced toxics being pumped to the Ottawa River .

Metering pumps for process chemicals were purchased to allow for improved pumping rates and alarm system to signal to the standby operator equipment failure.

Projects anticipated for 2006

Quarry Road inlet valve actuator is being replaced and a manual valve is being added to allow for reservoir isolation.

The SCADA computer version is to be updated to allow communication with the SCADA at the Pembroke Pollution Control Centre.

Filter Media, both sand and anthracite will be replaced having been in operation since plant construction.

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Water System Description

The Pembroke Water Purification Plant (WPP) is located on the shores of the Ottawa River located in the City of Pembroke.  The plant was built in 1984 with an approved capacity of 32,368m3 /day.

A 424 metre long, 760mm diameter intake into the Ottawa River connects an intake crib to the plant raw water well. Four low lift turbine pumps, two rated at 125 litres/sec each, and two smaller pumps, rated at 60 litres/sec each convey raw water through a flow metre and a flash mixer to the flocculation/coagulation tanks (two sets of three tanks in series). Two settling tanks equipped with travelling hydraulic sludge collectors followed by duel media rapid gravity filters (134m2 area of filter).

The clearwells have a storage capacity of 8000m3. With high lift pumps as follows:

 

The chemical feed systems generally consist of the following:

 

There are a total of two storage facilities in the distribution system; a 2,300 m3 elevated tower at Bell Street and Fraser Street and a 4,500 m3 in-ground reservoir at Quarry Road, which includes a booster pumping station. Sodium Hypochlorite is added at both locations depending on chlorine requirements. Both locations have automatic chlorine analysers and pH meters relaying all data to the SCADA system located at the main plant for constant monitoring.

Water Purification Plant Classification      Level 3

Operator Certification Levels as per O. Regulation 128/04

Superintendent Chief Operator Operator (2) Operator (1) Operator (1) Operator (2)

Level 4 Level 4 Level 4 Level 3 Level 1 Level OIT

  

Distribution System Classification        Level 1

Superintendent Supervisor Operator (5) Operator (4) Operator (1)

Level 2 Level 1 Level 2 Level 1 OIT

Accredited Laboratory

Accutest Laboratory Ltd.

146 Colonnade Rd   Unit 8

Ottawa  ON K2E 7Y1

Phone: (613) 727-5692

Sampling as per Ontario Regulation 170/03

Microbiological

Total coliform, escherichia coli or fecal coliforms, heterotrophic plate count or total coliform background count by memrane filter analysis.

Raw Water Filtered Water Treated Water Bell Street Tower Quarry Road In-ground Reservoir Distribution

94 samples annually 52 samples annually 94 samples annually 50 samples annually 50 samples annually 385 samples annually

Treatment Process Monitoring and Controls

   Raw Water and Treated Water

On Line Instrumentation

Monitored by plant SCADA system. Data is collected and stored on hard drives and hard copy files.

  

Chemical Metering Pumps

Calibrated weekly to ensure proper dosing to both raw water and treated water. 

Results are recorded and filed. Drives and speed controllers are serviced by plant

electrician.   

Plant Operations Require Staff to Conduct Analysis