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CITY OF CAMBRIDGE

DOVER STREET SANITARY PUMPING STATION MUNICIPAL CLASS ENVIRONMENTAL ASSESSMENT

City of Cambridge

Dover Street Sanitary Pumping Station

Municipal Class Environmental Assessment

Public Information Centre

Thursday, March 8, 2018

Preston Auditorium, 1458 Hamilton Street, Cambridge

5:00 pm – 7:00 pm

CITY OF CAMBRIDGE


Why is this Study being Undertaken?

Purpose of the Study

• The City of Cambridge has initiated a Municipal Class Environmental

Assessment (EA) Study to assess the preferred sanitary servicing

strategy for existing and future servicing needs within the Dover

Street Sanitary Pumping Station (SPS) catchment area.

Dover St SPS Class EA

PIC

Gain an understanding of the Municipal Class EA process

Hear about the preliminary preferred servicing option

Provide your feedback in the Class EA process -

Stay involved …

Process

Ideas

Feedback

Study Context

• The Dover Street Sanitary Pumping Station was constructed in 1968;

the station currently has condition and operational constraints

• The station is required to service the catchment of existing residential

and business properties within a 900 hectare service area

• The City of Cambridge is planning for future development which will

result in additional sanitary flow in the existing system and to the SPS

• The City must determine if the existing pumping station can

accommodate existing and future servicing requirements

CITY OF CAMBRIDGE


Municipal Class EA Process and Consultation

The study follows the Municipal Class Environmental Assessment

process as outlined in the Municipal Engineers Association (MEA)

Municipal Class Environmental Assessment (Oct 2000, as amended in

2007, 2011 and 2015).

This study is being undertaken as a Schedule “B” Class EA which

involves completion of Phases 1 and 2 of the MEA Municipal Class EA

process.

PHASE 1Identify & Describe the

Problem/Opportunity Statement

PHASE 2Complete Study Area Inventory

Identify & Evaluate Alternative

Solutions

Dover St SPS Class EA

Project File Report

Notice of Completion(Mandatory Contact Point)

Spring 2018

We Are

Here

Study Problem / Opportunity Statement“Support existing servicing needs and projected growth within

the Dover Street Sanitary Pumping Station catchment area ”

PIC

Public Consultation/Review

Agency Contact Point

March 2018

Study Overview

Step 1 - Understand Existing Conditions

• Undertake condition assessment of the

facility

• Establish existing capacity and flow

• Understand existing environmental

features

This step confirmed the need for extensive

upgrades

Step 2 - Assessment to Identify and

Recommend Servicing Solution

• Establish capacity/servicing requirements

to meet existing & future needs

• Develop & evaluate servicing options

• Complete Class EA requirements

• Develop Implementation Plan

This step identified and evaluated a range of

options to address existing deficiencies and

future needs

CITY OF CAMBRIDGE


Environmental Features

CITY OF CAMBRIDGE


Evaluation of Servicing Alternatives

7.NEW PUMPING STATION

Construct new pumping station

adjacent to existing SPS

RECOMMENDED? NO

• Most costly alternative

• Longest construction time/traffic

impact

• Does not maximize use of

existing station

4.FACILITY REFURBISHMENT

Refurbishment of existing station

to meet standards

RECOMMENDED? NO

• Little opportunity to improve existing

site and building

• Does not address existing O&M issues

• More difficult to operate during

construction

• No increase in emergency storage

5.NEW CONTROL BUILDING ON EXISTING

FOOTPRINT

Refurbishment of existing wet well and dry well +

construction of new control building on same footprint

RECOMMENDED? NO

• More difficult to operate during construction

• No increase in available emergency storage

• Does not address existing wet well O&M issues

6.NEW CONTROL BUILDING ON NEW FOOTPRINT

Convert existing wet well and dry well into single wet well +

construct new control building on alternative footprint

RECOMMENDED? YES

• Opportunities to construct control building outside of floodplain

• Eliminates need for new well

• Reduces potential environmental and socio impact

• Provides increased emergency storage and provides

opportunity to improve O&M

• Presents optimum capital and lifecycle costs

SELECTION OF PRELIMINARY

PREFERRED ALTERNATIVE

Option 6: New Control Building

on New Footprint

PASS / FAIL CRITERIA

Does the alternative meet the

problem/opportunity statement

Does the alternative meet

technical requirements

SHORTLIST ALTERNATIVES

Option 4: Full Facility

Refurbishment (meet standards)

Option 5:New Control Building

on Existing Footprint


on New Footprint

Option 7: New Pumping Station

LONGLIST ALTERNATIVES

Option 1: Do Nothing

(screened out)

Option 2: Limited Growth

(screened out)

Option 3: Status Quo Facility

Refurbishment (screened out)

Option 4: Full Facility

Refurbishment (meet standards)

Option 5:New Control Building

on Existing Footprint


on New Footprint

Option 7: New Pumping Station

PLANNING POLICY FRAMEWORK

AND DRIVERS

City of Cambridge

Official Plan

Region of Waterloo

Official Plan

City of Cambridge Sanitary

Servicing Master Plan

Region of Waterloo Wastewater

Treatment Master Plan

Condition Assessment

Environmental Inventory

Existing and Future

Service Area

5 POINT EVALUATION CRITERIA

1. Technical

2. Environmental

3. Socio/Cultural

4. Financial

5. Legal/Jurisdictional

CITY OF CAMBRIDGE


The Preliminary Preferred Servicing Alternative

New Control Building on New

Footprint

Convert existing wet well and dry

well into single wet well + construct

new control building on alternative

footprint

• Opportunities to construct control

building outside of floodplain

• Eliminates need for new wet/dry

well

• Reduces potential environmental

and socio/economic impact

• Provides increased emergency

storage and provides opportunity to

improve O&M

• Presents optimum capital and

lifecycle costs

CITY OF CAMBRIDGE


How to Get Involved

Please …

• Fill out the comment sheet provided

• Contact the project team with your input

Next Steps

Following this PIC, the project team will:

• Review and consider your input received during the PIC and comments sheets

• Select preferred servicing alternative strategy

• Complete the Project File (final report) for public review and Issue a Notice of Completion

• Continue to work with review agencies and stakeholders

• Identify precise SPS upgrades and location within the site during detailed design

• Develop a construction plan to minimize impact. (Including but not limited to: Traffic Management Plan, Odour Control Plan, Noise and Dust Control Strategy)

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