Water and Wastewater Master Plan
Carleton Place, Ontario
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Carleton Place Water &
Wastewater Master Plan -
Phase 2 Report
Final
May 30, 2022
Prepared for:
Town of Carleton Place
Prepared by:
Stantec Consulting Ltd.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
This document entitled "Carleton Place Water & Wastewater Master Plan - Phase 2
Report" was prepared by Stantec Consulting Ltd. ("Stantec") for the account of Town of
Carleton Place (the "Client"). Any reliance on this document by any third party is strictly
prohibited. The material in it reflects Stantec's professional judgment in light of the scope,
schedule and other limitations stated in the document and in the contract between Stantec
and the Client. The opinions in the document are based on conditions and information
existing at the time the document was published and do not take into account any
subsequent changes. In preparing the document, Stantec did not verify information
supplied to it by others. Any use which a third party makes of this document is the
responsibility of such third party. Such third party agrees that Stantec shall not be
responsible for costs or damages of any kind, if any, suffered by it or any other third party
as a result of decisions made or actions taken based on this document.
Prepared by:
Pierre Wilder, P.Eng.
Christène Razafimaharo, M.Sc., EIT
Amy Langford, P.Eng.
Ferenaz Raheem, RPP MCIP
Reviewed by:
Olav Natvik, M.Eng., P.Eng.
Jean Hébert, P.Eng., ing., M.A.Sc.,
MPM
Approved by:
Kevin Alemany, M.A.Sc., P.Eng.
Digitally signed by Pierre Wilder
Date: 2022.05.30 13:44:51
-04'00'
Digitally signed by
Razafimaharo, Christene
Date: 2022.05.31
06:51:59 -04'00'
Digitally signed by
Langford, Amy
Date: 2022.05.30
13:26:10 -04'00'
Raheem,
Ferenaz
Digitally signed by
Raheem, Ferenaz
Date: 2022.05.31
10:45:52 -04'00'
Digitally signed by
Natvik, Olav
Date: 2022.05.30
16:18:45 -04'00'
Jean Hébert,
P.Eng.
Jean Hébert, P.Eng.
cn=Jean Hébert, P.Eng.,
o=Stantec Consulting Ltd,
email=jean.hebert@stante
c.com, c=CA
Digitally signed by
Alemany, Kevin
Date: 2022.05.30
13:47:14 -04'00'
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
i
Table of Contents
Executive Summary ....................................................................................................... i
1
Introduction ...................................................................................................... 1.1
1.1
Background ....................................................................................................... 1.1
1.2
Study Area ......................................................................................................... 1.1
2
Class Environmental Assessment Process & Master Planning .................. 2.1
2.1
Overview ........................................................................................................... 2.1
2.2
Consultation and Communication ...................................................................... 2.5
2.2.1
Study Website ................................................................................... 2.5
2.2.2
Study Contact List ............................................................................. 2.5
2.2.3
Notice of Study Commencement ....................................................... 2.5
2.2.4
Pre-Consultation Agency Meetings ................................................... 2.6
2.2.5
Notice of Online Public Information Centre (PIC) 1 ........................... 2.7
2.2.6
PIC 1 ................................................................................................. 2.7
2.2.7
Draft Master Plan Report ................................................................. 2.10
2.2.8
Notice of Study Completion / Final Master Plan Report................... 2.10
3
Existing Conditions ......................................................................................... 3.1
3.1
Natural Environment .......................................................................................... 3.1
3.1.1
Mississippi River ................................................................................ 3.1
3.1.2
Species at Risk Screening ................................................................. 3.2
3.2
Social & Economic Environment ........................................................................ 3.2
3.2.1
Population & Households .................................................................. 3.2
3.2.2
Economic Environment ...................................................................... 3.3
3.3
Cultural Environment ......................................................................................... 3.3
3.3.1
Cultural Heritage................................................................................ 3.3
3.3.2
Archaeology ...................................................................................... 3.5
3.4
Climate Change ................................................................................................. 3.6
4
Planning Alternatives ...................................................................................... 4.1
4.1
Potable Water System ....................................................................................... 4.1
4.1.1
Water Treatment Plant (WTP) ........................................................... 4.1
4.1.2
Water Storage ................................................................................... 4.1
4.1.3
Potable Water Distribution System (WDS) ........................................ 4.2
4.2
Wastewater System ........................................................................................... 4.2
4.2.1
Wastewater Treatment Plant (WWTP) .............................................. 4.2
4.2.2
Sanitary Collection System ................................................................ 4.3
5
Implementation Plan ....................................................................................... 5.1
5.1
Water Treatment Plant (WTP) ........................................................................... 5.1
5.1.1
Cost Estimate & Timing - WTP Upgrades ......................................... 5.3
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
ii
5.1.2
Climate Change Considerations - WTP ............................................. 5.5
5.2
Potable Water Distribution System (WDS) ........................................................ 5.6
5.2.1
Cost Estimate & Phasing - WDS ..................................................... 5.14
5.2.2
Climate Change Considerations - WDS .......................................... 5.16
5.3
Wastewater Treatment Plant (WWTP) ............................................................ 5.17
5.3.1
Cost Estimate & Timing - WWTP Upgrades .................................... 5.20
5.3.2
Climate Change Considerations - WWTP ....................................... 5.24
5.4
Permits and Approvals .................................................................................... 5.25
5.5
Summary of Implementation Plan .................................................................... 5.26
6
Conclusions and Next Steps .......................................................................... 6.1
7
References ....................................................................................................... 7.1
List of Tables
Table 2.1:
Summary of Notice of Study Commencement Comments and
Responses ............................................................................................... 2.6
Table 2.2:
Summary of Online PIC 1 Comments and Responses ............................ 2.8
Table 3.1:
Town of Carleton Place Growth Projections (2021-2041) ........................ 3.3
Table 5.1:
Unit Process Capacity Increases for WTP Expansion .............................. 5.3
Table 5.2:
Cost Estimate & Timing for WTP Upgrades ............................................. 5.4
Table 5.3:
Proposed Watermain Upgrades ............................................................. 5.10
Table 5.4:
Summary of Opinion of Probable Costs for Water Distribution
Infrastructure Upgrades (2022 dollars) ................................................... 5.14
Table 5.5
Unit Process Capacity Increases for WWTP Expansion ........................ 5.19
Table 5.6
Construction Cost Opinion for Example WWTP Expansion ................... 5.22
Table 5.7:
Potential Permit and Approval Requirements......................................... 5.25
List of Figures
Figure 1.1:
Town of Carleton Place Limits & Major Water/Wastewater
Infrastructure ............................................................................................ 1.3
Figure 2.1:
Summary of the Municipal Class EA Process (Source: Municipal
Engineers Association, 2021)................................................................... 2.3
Figure 5.1:
Potential Footprint of On-Site WTP Expansion ........................................ 5.2
Figure 5.2:
Map of Proposed Watermain Upgrades ................................................. 5.13
Figure 5.3:
Preliminary Water Distribution System Upgrades Cost Timeline ............ 5.15
Figure 5.4:
Potential Footprint of WWTP Expansion ................................................ 5.18
Figure 5.5:
Preliminary Implementation Plan ............................................................ 5.27
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
iii
List of Appendices
Appendix A
Phase 1 Report, Design Basis Memo and Sanitary Model
Upgrade Memo
A.1
Phase 1 Report
A.2
Design Basis Memo
A.3
Sanitary Model Upgrade Memo
A.4
2018 WTP & WWTP Resiliency Studies by J.L. Richards
Appendix B
Alternatives Technical Memorandum
Appendix C
Archaeological Study
Appendix D
Species at Risk Screening
Appendix E
Heritage Study
Appendix F
Consultation Documents
F.1
Stakeholder Contact List
F.2
Notice of Commencement and Correspondence
F.3
Indigenous Consultation
F.4
Notice of PIC and Correspondence
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
EX-i
Executive Summary
The Town of Carleton Place's water & wastewater infrastructure will require expansions
to accommodate planned growth to 2041. A Municipal Class Environmental
Assessment (MCEA) is being undertaken to identify problems & opportunities, identify
alternative solutions, define implementation plans and implement the solutions.
Based on a review of alternatives, the preferred alternatives were:
- To expand the existing water treatment plant (WTP) on the existing site at John St.
- To add water storage at the WTP site as part of the expansion
- To upgrade watermains in the water distribution system (WDS)
- To expand the existing wastewater treatment plant (WWTP) on the existing site off
Patterson Cres. and partially into the neighbouring property (Town's household
hazardous waste and compost depot).
The sanitary collection system was also investigated. However, it is recommended that
the existing system modelling tools first be further developed through a flow monitoring
program prior to using them for the detailed planning of solutions.
Consultation from the onset of and throughout the process was led to allow an
exchange of ideas with stakeholders and the public, and broaden the information base
for better decision-making, per the MCEA process.
Implementation plans are presented in this Master Plan for the WTP expansion, WDS
upgrades and WWTP expansion, including phasing and planning level costing.
This Master Plan will be posted to the project website, and a Notice of Completion for
Schedule A and A+ projects will be published. Schedule C projects will be further
investigated in future phases of the EA.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
1.1
1
Introduction
1.1
Background
Stantec Consulting was retained by the Town of Carleton Place (The Town) to
undertake a Municipal Class Environmental Assessment (MCEA) and prepare a Master
Plan for the expansion of the Town's Water Treatment Plant (WTP) and Wastewater
Treatment Plant (WWTP) and to assess the need for the potential addition of a new
water storage reservoir. The Master Planning assignment will evaluate the Town's water
and wastewater infrastructure needs over 5-year, 10-year and 20-year horizons. In
addition to the treatment facility expansions and the water reservoir, the assessment will
investigate current and future needs of the potable water distribution and wastewater
collection systems.
The purpose of this report is to present the preferred solutions of the Master Plan, along
with an implementation strategy for each solution. Alternative solutions were previously
presented and evaluated in an Alternatives Evaluation Technical Memo (TM),
provided in Appendix B. These alternatives were developed as potential solutions to
address the problems and opportunities identified in the Phase 1 Report (provided in
Appendix A.1). The assessment of problems and opportunities under existing and
growth conditions are based on criteria established in the Phase 1 Report
(Appendix A.1).
Once finalized, the Master Plan will be posted to the project website
(https://carletonplace.ca/water-and-wastewater-master-plan.php), and a Notice of
Completion for Schedule A and A+ projects will be published. Schedule C projects will
be further investigated in future phases of the EA. This Master Plan will provide a basis
for any Schedule B projects to be pursued by the Town of Carleton Place under a
separate EA as needed.
1.2
Study Area
The Town of Carleton Place is situated in Lanark County, west of the City of Ottawa,
accessible via Highways 7 and 15. Based on the Census of 2021, the Town had a
population of 12,517 inhabitants and occupied an area of 9.94 km2. The Town has
experienced fast population growth, and this represents a 17.6% increase from the
2016 population.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
1.2
The Mississippi River runs through the center of the Town and serves as the source of
water for the municipal drinking water system and as the receiving stream for treated
sewage effluent. The Mississippi River is also used for recreational purposes around the
Town. The Town limits and major water & wastewater infrastructure are shown in
Figure 1.1.
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G l o u c e s t e r
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T O W N O F
T O W N O F
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T O W N S H I P O F
B E C K W I T H
B E C K W I T H
C O R P O R A T I O N O F T H E
C O R P O R A T I O N O F T H E
M U N I C I P A L I T Y O F
M U N I C I P A L I T Y O F
M I S S I S S I P P I M I L L S
M I S S I S S I P P I M I L L S
Mississippi
Lake
Mississippi
River
MOORE
STREET
HIGHWAY
7
BRIDGE STREET
COUNTY
ROAD
29
TOWNLINE ROAD WEST
HIGHWAY 15
MCNEELY
AVENUE
FINDLAY AVE
QUEEN ST SOUTH
PARK AVE
MOORE ST
MCKENZIE ST
LAKE AVE EAST
LAKE AVE WEST
VICTORIA ST
CHARLES ST
EMILY ST
ROBERTSON LN
JULIAN ST
GEMMILL ST
KING ST
NICHOLS CRES
DOUCETT DR
DUNHAM ST
ANN ST
WARREN ST
FRONT ST
DOLAN ST
PECKETT DRIVE
MCROSTIE ST
DUNHAM COURT
RATHWELL ST
ALEXANDER ST
MCNEELY AVE
JUDSON ST
TOWNLINE RD W
REAR ST
STONEWATER BAY
FLEGG WAY
GEORGE ST
JUDSON LN
JOHN ST
LISGAR ST
SUSSEX ST
QUARRY RD
EASTWOOD DR
BOYD ST
POWER ST
TOWNLINE RD WEST
RIDDELL ST
DUNLOP ROAD
MATTHEWS ST
CATHARINE ST
FRANKLIN ST
TOWNLINE RD EAST
RAMSAY ST
ALBERT ST
POLLOCK DR
COSTELLO DR
HOOPER ST
COLEMAN ST
LENORE ST
BAINES ST
CHARLOTTE ST
HERRIOTT ST
HURDIS WAY
JAMES ST
MISSISSIPPI RD
ROCHESTER ST
NELSON ST WEST
ARTHUR ST
MCDIARMID LANE N
ST PAUL ST
BARKER ST
MCDONALD ST
WILSON ST
CAMPBELL ST
WOODWARD ST
MORRIS ST
SINCLAIR AVE
DONALD ST
EDMUND ST
BURGESS ST
FLORA ST
BRIDGE ST
HUGHES ST
MULLETT ST
SARAH ST
NELSON ST EAST
LAURA ST
MAILEY DR
LYNDHURST ST
PRIME PLACE
MOFFATT ST
MAPLE LANE
LORNE ST
QUEEN ST NORTH
COOR CRT
PRINCE ST
MORPHY ST
CAVANAGH RD
PRINCESS ST
CARLETON ST
BELL ST
MUNRO ST
WATER ST
CARMEL ST
INDUSTRIAL AVE
WRIGHT ST
DULMAGE CRES
MCEWEN ST
TABER ST
BRICK ST
BEGLEY ST
CHRISTIE ST
ARGYLE ST
NEELIN ST
MCLAREN ST
BATES DR
HIGH ST
MCGREGOR ST
PATTIE DRIVE
SMYTHE RD
BECKWITH ST
JOHNSTON ST
JOSEPH ST
HAWTHORNE AVE
PETER ST
FRANK ST
CRAM ST
CRAMPTON DR
BORLAND DR
ROSAMOND ST
BENNETT ST
SANTIAGO ST
REYNOLDS AV
CUMMINGS AVE
MARY ST
MIGUEL ST
MCPHAIL ROAD
ALLAN ST
ANTRIM ST
DUFFERIN ST
STOKES DRIVE
DUNCAN ST
CAPTAIN A. ROY BROWN BLVD
BARCLAY ST
MACARTHUR AVE
WELLINGTON ST
HENRY ST
HIGHWAY 7
HACKBERRY TRAIL
DUNLOP RD
WYLIE WAY
CALDWELL ST
SPICER ST
NAPOLEON ST
GRANT ST
FERRILL CRES
BLAIR ST
THOMAS ST
KNOX ST
BRYCE COURT
EDWARDS DR
LANSDOWNE AVE
GRAHAM ST
MILL ST
LEMAISTRE ST
FRANKTOWN RD
BOUNDARY RD
RAMSAY CON 8
CODE CRES
FRANCIS ST
ANTONAKOS DR
FANNING ST
PEEVER PLACE
TERRY FOX AVE
MCPHAIL RD
ELIZABETH ST
PRESTON DRIVE
COMBA DR
WATERSIDE DRIVE
ROE ST
BRUCE CRES
PATTERSON CRES
WILLIAM ST
LANARK ST
HIGHWAY 15
EST
WTP
WWTP
409000
409000
410000
410000
411000
411000
412000
412000
413000
413000
4998000
4998000
4999000
4999000
5000000
5000000
5001000
5001000
Town of Carleton Place
Carleton Place W&WW Master Plan
Phase 2 Report
163401646 REVA
Carleton Place, ON
Prepared by CR on 2022-03-09
Town of Carleton Place Limits & Major
Water/Wastewater Infrastructure
Disclaimer: This document has been prepared based on information provided by others as cited in the Notes section. Stantec has not verified the accuracy and/or completeness of this information and shall not be responsible for any errors or omissions which may be incorporated herein as a result. Stantec assumes no responsibility for data supplied in electronic format, and the recipient accepts full responsibility for verifying the accuracy and completeness of the data.
Project Location
Client/Project
Figure No.
Title
Notes
1. Coordinate System: NAD 1983 UTM Zone 18N
2. Base features produced under license with the Ontario Ministry of Natural
Resources and Forestry © Queen's Printer for Ontario, 2021.
3. Data Source: Background shapefiles from the Town of Carleton Place
4. Abbreviations: EST = Elevated Storage Tank; WM = Watermain(s); WDS = Water
Distribution System; WTP = Water Treatment Plant; WWTP = Wastewater Treatment Plant
0
0.5
Kilometers
(
$
$¯
(At original document size of 11x17)
1:16,500
Legend
Town Limits
Highway
Major Road
Minor Road
Waterbody
Wooded Area
1-1
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
1.4
Background Studies and Official Plan
Stantec reviewed relevant studies, assessments and reports completed in recent years,
prior to the current Master Plan, that provide background information on the Town's
water and wastewater systems, and on the Town's population growth. The findings of
these studies are summarized in the Phase 1 Report (provided in Appendix A.1), as
well as in the Alternatives TM (provided in Appendix B).
Notably, the 2019 Town of Carleton Place Official Plan (OP) sets out the policies and
land use designations that are to be used by the Town to guide development until the
year 2032.
The OP sets out the population growth projections for the Town. The OP outlines
policies regarding land use, designating areas for development. This Master Plan is
prepared with consideration given to the objectives of the OP.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
2.1
2
Class Environmental Assessment Process &
Master Planning
2.1
Overview
The MCEA provides a consistent method of identifying and assessing technical and
environmental impacts and concerns before improvements or additions to municipal
infrastructure are undertaken. Planning in this way provides reassurance that potential
impacts from all municipal projects are addressed and mitigated, prior to
implementation.
The MCEA document defines four schedules under which projects may be planned and
the associated processes required for each. The four types of projects are referred to as
schedules and projects can be classed as either Schedule A, A+, B or C, depending on
the anticipated level of environmental impact, and for some projects, the anticipated
construction costs.
Schedule A projects are minor operational and/or maintenance activities and may go
ahead without further assessment once Phase 1 of the Class EA process is complete
(i.e., the problem is reviewed, and a solution is confirmed).
Schedule A+ projects are limited in scale, have minimal adverse environmental
impacts, and require no documentation. However, the public is to be advised of the
project prior to implementation.
Schedule B projects must proceed through the first two phases of the process.
Proponents must identify and assess alternative solutions to the problem, inventory
impacts, and select a preferred solution. They must also contact relevant agencies and
affected members of the public. Provided that no significant impacts are found, and no
requests are received to elevate the project to Schedule C or undertake the project as
an Individual EA, the project may proceed to detailed design (Phase 5).
Schedule C projects require more detailed study, public consultation and
documentation, as they may have more significant impacts. Projects categorized as
Schedule C must proceed through the first four phases of assessment. Schedule C
projects may potentially result in adverse impact(s), and as such, a public consultation
program is needed to ensure that stakeholders and local residents within the study area
are provided with the opportunity to provide meaningful input.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
2.2
The schedule in which a project applies determines the planning and design phases
that must be followed. The five phases are as follows:
- Phase 1: Identification of problem or opportunity
- Phase 2: Identification of alternative solutions
- Phase 3: Definition of alternative methods to implement the preferred solution
- Phase 4: Publication of an Environmental Study Report
- Phase 5: Implementation of the solution
This study was initiated and conducted in accordance with Approach #2 of the Master
Planning Process, as outlined in Appendix 4 of the MCEA document. As such, this
study will address Phases 1 and 2 of the MCEA process. Since further environmental
investigations are required for specific projects, this Water and Wastewater Master Plan
(W&W MP) report serves to form the basis for the recommended Schedule B and C
water and wastewater projects identified.
Consultation is a key element of EA planning and is required during different phases to
ensure public participation. Figure 2.1 summarizes the different schedules and phases
of the Class EA process, and Figure 2.2 provides details on the activities within each
phase of the process.
By incorporating the principles of the Class EA, Master Plans can support the
requirements of EAs. The Town of Carleton Place will look to satisfy the EA
requirements (Schedule B) for a potential new water reservoir, should it be found as the
preferred alternative, and publish Environmental Study Reports to satisfy the EA
requirements (Schedule C) for the water and wastewater treatment plant expansions.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
2.3
Figure 2.1: Summary of the Municipal Class EA Process (Source: Municipal Engineers Association, 2021)
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
2.4
Figure 2.2: Municipal Class EA Planning and Design Process (Source: Municipal Engineers Association, 2021)
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
2.5
2.2
Consultation and Communication
Consultation from the onset of and throughout the process is a key component of the
EA planning process. An effective consultation program can foster meaningful dialogue
between the project planners and stakeholders, allowing an exchange of ideas and
broadening of the information base for better decision-making.
2.2.1
Study Website
A separate study webpage was established on the Town's existing website. Study
background information, notifications, updates, and links to online consultation were
provided on the dedicated webpage, as it became available. The consultation material
published on the study webpage is also provided in Appendix F. Through the study
webpage, users were invited to contact study team members through their email
account. The dedicated website is: https://carletonplace.ca/water-and-wastewater-
master-plan.php
2.2.2
Study Contact List
A comprehensive study contact list consisting of government agencies, Town staff,
utilities, emergency service providers, Indigenous Nations, Indigenous Organizations,
local organizations and special interest groups and members of the public who
expressed interest in the study was developed at the onset of the study. This list was
updated as the study progressed. The latest version of this contact list is provided in
Appendix F.1.
2.2.3
Notice of Study Commencement
The purpose of the Notice of Study Commencement was to inform the public and
external agencies about the study and to seek initial input in relation to the study. The
notice briefly outlined the objective of the study, the Class EA process, study area
location map and contact information for project team representatives.
The Notice of Study Commencement was communicated via the local newspaper, the
Carleton Place Canadian Gazette on June 3, 2021, and was also posted on the Town's
website. Additionally, a copy of the notice was mailed and emailed to the contact
mailing list.
A copy of this notice is provided in Appendix Error! Reference source not found. of this d
ocument.
Nine (9) comments were received as a result of issuing the Notice of Study
Commencement. The comments and responses are summarized in Table 2.1 below.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
2.6
Table 2.1:
Summary of Notice of Study Commencement Comments and
Responses
Comments Received
Response
Request to be added to mailing list
Added
Response from the Ministry of the Environment,
Conservation and Parks (MECP) recommending a
pre-consultation meeting, and outlining considerations
for the Class EA Process, the MECP Technical
Review and consultation with Indigenous Nations
Pre-consultation meeting with the MECP held
on December 16th, 2021 (see Section
2.2.4.2).
Response from the Mississippi Valley Conservation
Authority (MVCA) expressing concerns for the
consideration of climate change in the Master Plan,
and specifically the impact of drought on water levels.
Pre-consultation meeting with the MVCA held
on July 5th, 2021 (see Section 2.2.4.1).
Low flow water levels considered in an
ongoing updated assimilative capacity study
and water availability study.
Climate change resilience considered
throughout the Master Plan (see Sections
3.4, 5.1.2, 1.1.1 and 5.3.2).
Response from the Ministry of Heritage, Sport,
Tourism and Culture Industries (MHSTCI) to develop
a Cultural Heritage Report Existing Conditions and
Preliminary Impact Assessment (CHRECPIA)
Response letter sent on July 12th, 2021,
outlining activities which will consider potential
cultural heritage resources, including a
Cultural Heritage Assessment (see Section
3.3.1) and screening for archaeological
potential (see Section 3.3.2).
Suggestion to consider the implementation of water
metering for cost-effectiveness
Response sent on June 4th, 2021
summarizing a cost-benefit analysis on the
impact of implementing metering on water
consumption.
Cost-effectiveness considered throughout the
Master Plan as part of the Planning
Alternatives (see Section 4) and
Implementation Plan (see Section 5).
2.2.4
Pre-Consultation Agency Meetings
Following the publication of the Notice of Study Commencement, pre-consultation
meetings were held with the Mississippi Valley Conservation Authority (MVCA) and with
the Ontario Ministry of the Environment, Conservation and Parks (MECP). The MVCA
and MECP were also consulted throughout subsequent steps of the study.
2.2.4.1 Pre-Consultation Meeting with the MVCA (July 5th, 2021)
Following the Notice of Study Commencement, the MVCA shared comments and
questions on the consideration of climate change in the Town's Class EA process. A
pre-consultation meeting was held with the MVCA on July 5th, 2021. The study team
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
2.7
gave a brief presentation providing an overview of the Master Plan project, followed by
a discussion of the MVCA's questions and comments regarding the uncertainty in
historical streamflow data and potential drought conditions, and their impacts on the
calculation of treatment objectives. The MVCA suggested that the Mississippi River low
flow indicators be re-calculated using an extended flow data set including more recent
dry years as an input to the ongoing assimilative capacity study (as requested by the
MECP, see next section on pre-consultation meeting with the MECP). The MVCA also
shared data on the Carleton Place Dam (rating curve), which will be used in or inform
additional studies (assimilative capacity study and water taking study, which will be
finalized in Phase 3 of this project). The meeting with the MVCA also helped identify
climate change considerations, which helped inform potential resilience measures in the
evaluation, selection and development of the preferred alternatives.
2.2.4.2 Pre-Consultation Meeting with the MECP (December 16th, 2021)
The study team organized a pre-consultation meeting with the MECP on December
16th, 2021, to review regulatory requirements which might impact the study. The study
team gave a presentation providing an overview of the Master Plan project, during
which the MECP's questions and comments were discussed. Following this meeting,
the study team is updating the Mississippi River assimilative capacity study and
preparing a water taking study, which will be finalized in Phase 3 of this project.
2.2.5
Notice of Online Public Information Centre (PIC) 1
The purpose of the Notice of Online Public Information Centre (PIC) 1 was to announce
the period of time in which the Online PIC 1 would be available for public review and
comment, to inform readers about the purpose, format and how to access the PIC
materials, and provide the study team's contact information.
The Notice of Online PIC 1 for this study was issued via mail and/or email to agencies,
interested persons and/or groups, and Indigenous Nations on February 3rd, 2022. The
notice was also posted in the Carleton Place/Almonte Canadian Gazette on January
27th, 2022 and February 3rd, 2022.
A copy of this notice is provided in Appendix F.4 of this document.
2.2.6
PIC 1
A PIC was held to share information and solicit feedback from the public, agencies,
Indigenous Nations and other stakeholders on the study background, MCEA process,
existing conditions, future deficiencies and opportunities, evaluation of alternative
solutions, recommended water and wastewater infrastructure solutions and next steps
in the study process. Considering COVID-19 and physical distancing requirements,
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2.8
PIC 1 was held on an online platform on the study website using the Articulate Storyline
platform. This platform included a prerecorded presentation which shared the study
materials on a set of slides, along with a transcript, which was available both audibly
and visually next to each slide. This format allowed participants to read/listen to the
presented information, as well as pause the presentation, or skip ahead to the section
that interests them most.
PIC 1 was held on the study website from February 10th, 2022 to February 24th, 2022.
All participants were encouraged to provide their feedback directly to the listed study
contacts by February 24, 2022. In total, 5 emails were received during the Online PIC 1
review period and the common response themes are summarized in Table 2.2.
Table 2.2:
Summary of Online PIC 1 Comments and Responses
Topic
Comments Received
Response
General Feedback
Request to be added to contact list/to
update contact information
Contact added/updated
Request to submit a Request for
Review (RFR) to the Fisheries and
Oceans Canada once design details
are available
Need to submit a RFR added to list of
Permits & Approvals (see
Section 5.4).
Water Treatment
Plant (WTP)
Concern regarding potential property
and traffic impacts to Carleton Place
High School.
Response provided, indicating that
the roadway around the WTP will be
restored after construction is
completed.
Impacts of construction on traffic will
be addressed at the detailed design
stage.
Suggestion to consider incorporating
water conservation measures in
tandem with the expansion of the WTP
to reduce impacts to the watershed.
Provided clarification that water
conservation measures will continue
to be implemented by the Town.
Concern regarding potential impacts to
the watershed and aquatic
environment as a result of the increase
of water taking from the Mississippi
River and resiliency to future droughts
and climate change.
The impact of increased water-taking
will be addressed in an ongoing water
availability study.
Climate change resilience considered
throughout the Master Plan (see
Sections 3.4, 5.1.2, 1.1.1 and 5.3.2).
A RFR will be submitted to Fisheries
and Oceans Canada once a detailed
design is prepared.
Inquiry regarding the consideration of
renewable energy sources to power
the WTP.
The use of renewable energy sources
to power the WTP can be
investigated as part of the detailed
design.
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2.9
Topic
Comments Received
Response
Concern for potential impacts to
individual trees and commitment for
replacement.
Responded that the Town can ensure
that additional trees are planted to
compensate for any trees lost in the
expansions.
Water Storage
Suggestion to implement water
conservation measures to reduce the
amount of water storage required.
Clarified that water conservation
measures alone will not provide the
necessary capacity for future growth.
Specified that water conservation
measures will continue to be
implemented by the Town.
Inquiry regarding the future use of the
existing Nelson St Water Storage
Tower.
Responded that the Nelson St water
storage tower will remain in operation,
but has limited capacity to be
expanded and would not meet the
criteria for redundancy.
Water Distribution
System (WDS) &
Sanitary Collection
System
Inquiry regarding upgrading/adding
watermain and sewers (including at
specific locations on Cavanagh Rd,
Coleman St and the Trans Canada
Trail)
Clarified that deficiencies in the WDS
and sanitary collection system would
in part be addressed by the WTP &
WWTP upgrades. Remaining
deficiencies are expected to be
addressed by Schedule A/A+
projects, which are pre-approved;
Schedule A+ projects will require
notification prior to implementation.
Sanitary sewer upgrades will be
investigated once flow monitoring has
been completed (see Section 4.2.2).
Watermain upgrades are identified in
Section 5.2.
Wastewater
Treatment Plant
(WWTP)
Concern regarding impacts to air
quality as a result of the expansion of
the WWTP near adjacent residential
dwellings.
Acknowledged the potential for
odours near WWTP. Odour control
will be investigated during detailed
design.
Suggestion to implement
inflow/infiltration reduction measures in
tandem with the WWTP expansion to
reduce the required expansion size
and operating costs.
Clarified that inflow/infiltration
reduction measures alone will not
provide the necessary capacity for
future growth.
Specified that infiltration reduction
measures (pipe rehabilitation/lining
activities) will continue to be
implemented by the Town. Indicated
that a flow monitoring program may
be implemented in the future to
identify locations of excess I/I.
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2.10
Topic
Comments Received
Response
Inquiry regarding the consideration of
renewable energy sources to power
the WWTP.
The use of renewable energy sources
to power the WWTP can be
considered as part of the detailed
design. Specifically, biogas re-use at
the WWTP may be investigated
depending on the treatment
technologies selected.
Concern regarding the potential for
contaminated runoff into the
Mississippi River.
Clarified that stormwater is not
directed to the WWTP. All new
subdivisions have storm sewers to
pick up storm water runoff and
facilities to provide the necessary
treatment before discharge to the
receiving stream. As part of the
Central Bridge reconstruction project,
a large oil/grit separator is being
installed to prevent contaminants
from the Bridge Street catchment
area north of the river from
discharging into the river.
Copies of the information presented as part of Online PIC 1 and the feedback received
are available within the Online PIC 1 Summary Report provided in Appendix F.4.
2.2.7
Draft Master Plan Report
The Draft Master Plan Report will be submitted to the Town staff for comments before a
Final Draft is prepared and presented to Town Council and the Committee of the Whole
(COW).
2.2.8
Notice of Study Completion / Final Master Plan Report
The Notice of Study Completion will be placed in the local newspaper (Carleton Place
Canadian Gazette) when the Master Plan report is made available for public review.
The Notice will also be made available on the project website and distributed via mail
and email to agencies, key stakeholders, Indigenous Nations and the public on the
study mailing list. This notice will briefly outline the Recommended Solutions and note
the Master Plan will be posted to the project website for a 30-day public review period.
Comments received throughout the 30-day review period will be addressed and records
from the 30-day review period will be included in the Environmental Study Report
(ESR).
Those who wish to review the Master Plan report will be encouraged to do so and
submit comments to the project contacts provided by a specified date.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
3.1
3
Existing Conditions
This section provides an overview of the existing conditions in the Town of Carleton
Place, considering different environmental factors, as recommended in the MCEA
Manual (Section C.3.1).
3.1
Natural Environment
3.1.1
Mississippi River
The Mississippi River is 200 km in length, flows northeastwards through the center of
the Town and is a tributary of the Ottawa River. The Mississippi Lake is located
upstream (southwest) of the Town. The Mississippi River watershed encompasses an
area of 3,750 km2 and comprises various natural environment features including
wetlands and woodlands. Within the developed and undeveloped areas of the Town
there are several creeks and parklands that present both opportunities and constraints
to future developments, and need to be considered in the different components of this
EA.
Furthermore, given the proximity of existing facilities to the river, the location of
floodplains needs to be considered throughout the planning and design phases of this
EA. Mitigation measures will need to be developed accordingly. Conversely, another
key objective of this Master Plan is to limit the impact that any proposed infrastructure
may have on the surrounding natural environment.
Water levels in Mississippi Lake are controlled by the Carleton Place Dam, which is
owned and operated by the MVCA. The dam is not intended for hydro-electric
production, but rather, it maintains recreational levels in Mississippi Lake and provides
some flood control benefits for Mississippi Lake and downstream municipalities (MNRF
2020). Operation of the Carleton Place Dam is important for maintaining water levels in
Mississippi Lake during low flow conditions. Additionally, the Carleton Place Dam is
operated to reduce shoreline damage and maintain stable ice levels in Mississippi Lake.
As the Town's WTP draws water from the Mississippi River, a water availability
assessment is ongoing to assess the impact of projected increased water taking needed
to accommodate future growth on the river's water levels, which is identified in Phase 1
Report (provided in Appendix A.1). The findings of the water availability assessment
will be presented in Phase 3 of this project.
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3.2
3.1.2
Species at Risk Screening
A species at risk (SAR) screening was conducted on the WTP site, WWTP site and on
the Town-owned lot on Bates Dr. representing a potential site for additional water
storage. The SAR screening for the three sites included a desktop review of potential
SAR occurrences and/or habitat accompanied by a single site visit. Natural heritage
features and potentially suitable habitat for species at risk were observed and/or
identified as occurring within the Study Areas of the WTP and WWTP (e.g., Blanding's
turtle) as well as the Bates Dr. site (e.g., wood thrush). Additionally, the mature trees
within the boundaries of the WTP site potentially provide maternity roost habitat for SAR
bats.
The Species at Risk Screening Report is provided in Appendix D.
3.2
Social & Economic Environment
3.2.1
Population & Households
According to the 2021 federal census, the population in Carleton Place was
12,517 persons, a 17.6% increase from the 2016 population. This is double the growth
rate experienced by the Town in the previous 5 years (+8.5% from 2011 to 2016). In
2021, there were a total of 5,340 private dwellings reported in the federal census,
representing an increase of 21% since 2016.
Growth projections over multiple planning horizons were developed as the basis of the
Master Plan. This study addresses the following horizons:
- Baseline year 2021
- Short term, or 5-year planning horizon, in the year 2026
- Medium term, or 10-year planning horizon, in the year 2031
- Long term, or 20-year planning horizon, in the year 2041
The Design Basis Memo (Appendix A.2) provides detailed information on how
population and area growth projections were developed for this Master Plan. The
resulting growth projections, geospatial distribution and phasing of development for the
Town of Carleton Place are presented in the Design Basis Memo (Appendix A.2).
The 2021 federal census results were not available during the development of the
Design Basis Memo (Appendix A.2). As such, the baseline (2021) population used as
the basis of the Master Plan overestimates the reported population by ~1,000 persons.
However, for long-term planning purposes, this allows for a conservative estimate of
future population, providing the Town with additional capacity should the current
population growth rate be maintained in the future.
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3.3
Table 3.1:
Town of Carleton Place Growth Projections (2021-2041)
Baseline (2021)
2026
2031
2041
Total Number of Units
5,623
7,186
8,535
10,581
Total ICI Area (ha)
35.0
42.2
48.7
57.4
Total Land Area (ha) (2)
591.0
650.0
700.0
850.0
Total Population (3)
13,500
17,000
20,500
25,000
Notes:
(1) Refer to Design Basis Memo (Appendix A.2) for detailed projection methodology.
(2) Total land area rounded to nearest 50 ha.
(3) Total population rounded to nearest 500.
3.2.2
Economic Environment
Along with population, employment and institutional, commercial and industrial (ICI)
areas are also projected to grow. The Town's major economic sectors include the
manufacturing industry, the health industry and retail trade (Corporation of the Town of
Carleton Place 2022, The Labour Market Group of Renfrew & Lanark 2017).
A component of this Master Plan will be to ensure that future ICI sites supporting the
economic development growth with the Town can be appropriately serviced with
municipal water and wastewater services.
3.3
Cultural Environment
3.3.1
Cultural Heritage
The MCEA require consideration of cultural environment heritage, including built
heritage resources, throughout the EA process. The MCEA Manual suggests that
cultural heritage resources that retain heritage attributes should be identified early in the
EA process and avoided where possible. Where avoidance is not possible, potential
effects to these attributes should be identified and minimized. Adverse impacts should
be mitigated according to provincial and municipal guidelines. It is suggested that this
happen early in the process so that potential impacts to significant features can be
included in an understanding of Project impacts and plans established to mitigate these
impacts.
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3.4
Per the letter received from the Ministry of Heritage, Sport, Tourism, and Culture
Industries (MHSTCI), a Cultural Heritage Report of Existing Conditions and Preliminary
Impact Assessment (CHRECPIA) was prepared. The purpose of the CHRECPIA was to
identify the presence of built heritage resources and cultural heritage landscapes within
the study area, understand the potential impacts of the project on these resources and
prepare mitigation strategies to minimize these impacts.
A site visit was conducted by a Cultural Heritage Specialist with Stantec, on March 2,
2022. During the survey, the Study Area was surveyed for previously identified or
potential built heritage resources or cultural heritage landscapes. Where identified,
these were photographed, the characteristics noted while in the field, and their locations
recorded.
In general, buildings and structures of more than 40 years of age were screened during
the survey for their potential to satisfy O. Reg. 9/06 criteria and the MHSTCI Criteria for
Evaluating Potential for Built Heritage Resources and Cultural Heritage Landscapes
(MHSTCI 2016). Only properties containing buildings or structures determined to have
potential to satisfy O. Reg. 9/06 were evaluated. The use of the 40-year threshold is
generally accepted by both the federal and provincial authorities as a preliminary
screening measure for cultural heritage interest or value. This practice does not imply
that all buildings and structures more than 40 years of age are inherently of significant
heritage value, nor does it exclude exceptional examples constructed within the past 40
years of being of significant cultural heritage value.
The Carleton Place WTP located at 199 John Street is a two-storey Edwardian style
industrial building built in 1914 and is listed on the Town's municipal heritage register.
An addition on the south elevation of the original building was built in 1983. The building
is made of buff brick and includes carved stone at the cornice and at the top of each
column. The west elevation consists of three bays separated by four columns. The side
bays include a 20-pane window at the lower level and a 4-pane window at the upper
level. The windows have stone sills. The central bay includes a single wooden door that
provides access into the building, as well as a cast iron light fixture and a sign that
reads "CARLETON PLACE WATER WORKS 1914". The east elevation is the same as
the west elevation but has a double door in place of a single door in the central bay. The
north elevation consists of five bays separated by six columns. The four easternmost
bays contain a 20-pane window at the lower level and a 4-pane window at the upper
level, while the westernmost has a wooden access door and a 4-pane window at the
second level. The south elevation has a one-storey annex that is used for chlorine
storage. The annex uses the same design language as the main WTP building but
includes a double width loading door with an arched brick voussoir on its south
elevation. The remaining annex elevations include 20-pane windows, access doors and
the connection to the contemporary addition. The contemporary addition to the WTP
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3.5
was built in 1983 and is a Brutalist inspired extension. The interior of the WTP has been
extensively modified.
The Carleton Place WWTP is an infrastructure complex located at 122 Patterson
Crescent. The complex consists of three above ground buildings that are all connected
through a series of underground tunnels. The original WWTP was built in 1914 and
there was a major overhaul of the entire complex that was completed in 1993. The new
design of the facility does not retain any of the design elements of the historic structure
of the site. Therefore, the property cannot be considered rare, unique, representative or
an early example of a style, type, expression, material or construction method.
Given that the Bates Drive site is a plot of land that has been cleared of trees, it is not
important in defining, maintaining or supporting the character of an area nor is it
physically, functionally, visually or historically linked to its surroundings. The site could
not be considered to be a landmark.
A copy of the CHRECPIA is provided in Appendix E.
3.3.2
Archaeology
A Stage 1 Archaeological Assessment (AA) was conducted in accordance with Section
1.3.2 and Section 7.7.4 of the Ministry of Heritage, Sport, Tourism and Culture
Industries' (MHSTCI) 2011 Standards and Guidelines for Consultant Archaeologists to
determine the potential for the presence of known and/or potential archaeological
resources within the study area. This was based on a review of relevant background
information and multiple site visits to different properties conducted on September 9th,
2021. The properties visited were the existing WTP site, the existing WWTP site, and
the Town's potential future water reservoir site on Bates Dr.
A review of soil texture and topography provided an indication of past settlements. The
background information of the study area indicates that its geology mainly consists of
shallow soil over limestone, with shallow tracts of clay near the Town, and bogs in the
region as well. Soils within the study area comprise loam, which are generally used for
pasture and agriculture. The background information of the study area demonstrated
that the study area retained potential for the recovery of pre- and post-contact
Indigenous and Euro-Canadian archaeological resources. Two archaeological sites
were identified within one kilometer of the study areas, consisting of Euro-Canadian
residential sites.
Construction drawings of the WTP and WWTP were reviewed and demonstrated
previous ground disturbances at the time of construction. During the site visits, signs of
previous grading activities and landscaping activities were identified. As such, it was
determined that the existing WTP site, the existing WWTP site and the Town's potential
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3.6
future water reservoir site on Bates Dr. do not retain potential for the recovery of
archaeological resources.
A copy of the Stage 1 AA Report is provided within Appendix C.
3.4
Climate Change
The 2014 Provincial Policy Statement issued under the Planning Act advises of the
need to consider climate change adaptation and mitigation. The MECP provides further
guidance on considering climate change adaptation and mitigation in the environmental
assessment process (Considering climate change in the environmental assessment
process | ontario.ca; MECP Guidance on Considering Climate Change). With climate
change leading to highly variable conditions, adaptation measures may be required in
the future to ensure the infrastructure's resiliency and mitigate the impact of extreme
weather events. Climate change and the potential impact to infrastructure is highly
uncertain. This uncertainty should be considered in engineering planning and design
initiatives.
As recommended in the MECP Guidance on Considering Climate Change, the Phase 1
Report (Appendix A.1) presents the historical means, trends and projected trends in
average total precipitation and average mean temperature for the study area, and
potential impacts to the different components of this EA are identified. The Resiliency
Plan - Water Treatment Plant (J.L. Richards, 2018) and the Resiliency Plan -
Wastewater Treatment Plant (J.L. Richards, 2018) relate to climate change and water
infrastructure resiliency for the Town of Carleton Place. Both studies concluded that
some of the infrastructure required to accommodate population growth could also
contribute to enhancing the facilities' resiliency to climate change. Measures to enhance
the treatment facilities' resiliency were also presented. These studies are provided in
Appendix A.4.
For the Town of Carleton Place, notable historical weather events include the very wet
spring of 2017 and 2019 (stressing the WWTP) and the very dry summer of 2016
(stressing the WTP). With climate change, high and low extreme water levels are more
likely to occur. Low water levels can pose issues with water-taking quantity and quality
at the WTP, and with the assimilative capacity of the WWTP effluent receiving stream.
High water levels can create risks of flooding at the WTP and WWTP sites and could
also pose issues with the WWTP gravity outfall (requiring pumping of effluent). Climate
change resilience was considered as part of the preferred alternatives for the WTP
(Section 1.1.1) and WWTP (Section 5.3.2). Climate change was furthermore
considered as part of the ongoing water availability assessment.
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3.7
The MECP Guidance on Considering Climate Change also highlights the importance of
considering and understanding the potential impacts that a project may have on climate
change. This can be done qualitatively and includes reviewing measures that could
contribute to climate change mitigation.
As recommended in the MECP Guidance on Considering Climate Change, potential
climate adaptation and mitigation measures were considered in the evaluation of
alternatives, and are outlined in the Alternatives TM (Appendix B) as well as in each
component's implementation plan (Section 5).
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
4.1
4
Planning Alternatives
4.1
Potable Water System
4.1.1
Water Treatment Plant (WTP)
Existing and future (growth) constraints were identified in the Phase 1 Report
(Appendix A.1). The following alternatives to address these constraints were
proposed and evaluated for the WTP. These alternatives align with recommended
alternatives in the MCEA Manual (Section C.2.1.3). Detailed descriptions are provided
in the Alternatives TM (Appendix B):
- Alternative A: Do Nothing
- Alternative B: Water Conservation Measures
- Alternative C: Expand Existing WTP On-Site
- Alternative D: Build an Additional WTP (Off-Site)
- Alternative E: Municipal Groundwater Well
The detailed evaluation of each alternative is presented in the Alternatives TM
(Appendix B). Based on this evaluation, the preferred alternative is Alternative C, to
expand the WTP on-site.
4.1.2
Water Storage
Existing and future (growth) constraints were identified in the Phase 1 Report
(Appendix A.1). The following alternatives to address these constraints were
proposed and evaluated for water storage. These alternatives align with recommended
alternatives in the MCEA Manual (Section C.2.1.3). Detailed descriptions are provided
in the Alternatives TM (Appendix B):
- Alternative A: Do Nothing
- Alternative B: Expand WTP Clearwell
- Alternative C: Add New Storage Off-Site
The detailed evaluation of each alternative is presented in the Alternatives TM
(Appendix A.1). Based on this evaluation, the preferred alternative is Alternative B,
to add storage at the WTP site. As such, the detailed implementation plan for
additional storage will be outlined as part of the WTP expansion plan.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
4.2
4.1.3
Potable Water Distribution System (WDS)
Existing and future (growth) constraints were identified in the Phase 1 Report
(Appendix A.1). The following alternatives to address these constraints were
proposed for the water distribution system throughout the Town. These alternatives
align with recommended alternatives in the MCEA Manual (Section C.2.1.3). Detailed
descriptions are provided in the Alternatives TM (Appendix B):
- Alternative A: Do Nothing
- Alternative B: Upgrade Watermains without Adding New Fire Flow Storage
- Alternative C: Add Secondary Fire Flow Storage
The selection of the preferred alternative depended on the alternative selected for the
WTP and the water storage. As described in the Alternatives TM (Appendix B), it
was decided that for the 20-year planning horizon, new fire flow storage would not be
added. As such, the preferred alternative is Alternative B, to upgrade watermains
without adding new fire flow storage. Watermain upgrades will be recommended in this
report.
4.2
Wastewater System
4.2.1
Wastewater Treatment Plant (WWTP)
Existing and future (growth) constraints were identified in the Phase 1 Report
(Appendix A.1). The following alternatives to address these constraints were
proposed and evaluated for the WWTP. These alternatives align with recommended
alternatives in the MCEA Manual (Section C.2.2.3). Detailed descriptions are provided
in the Alternatives TM (Appendix B):
- Alternative A: Do Nothing
- Alternative B: Inflow & Infiltration Reduction Measures
- Alternative C: Expand Existing WWTP
- Alternative D: Build an Additional WWTP
The detailed evaluation of each alternative is presented in the Alternatives TM
(Appendix B). Based on this evaluation, the preferred alternative is Alternative C, to
expand the WWTP on-site and partially into the neighbouring property (Town's
household hazardous waste and compost depot).
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
4.3
4.2.2
Sanitary Collection System
Existing and future (growth) constraints in the sanitary trunk collection system were
initially identified in the Phase 1 Report (Appendix A.1).Based on the Phase 1
Report recommendations, a PCSWMM model was developed and an updated
analysis was completed, which considers the hydraulic grade lines (HGL) throughout
the trunk sanitary network and includes the considerations for basement and surface
flooding. This analysis is presented in Technical Memorandum #1 - Sanitary Trunk
Model Update & Phase 1 Report Addendum (Appendix A.3). This developed
PCSWMM model was used to assess and identify possible deficiencies within the
system based on system constraints, as well as areas where more information is
required.
While there is greater confidence in the updated model than in the previous sanitary
sewer design spreadsheets (SSDSs), the flows generated in the model used design
guideline values, and as such may not be representative of the actual flows or their
distributions observed within the system. Once flow monitoring data has been used to
verify flows within the sanitary collection system, solutions can be evaluated. Sanitary
collection system upgrades will need to consider the WWTP expansion and may
include some of the following options [also outlined in the MCEA Manual (Section
C.2.2.3)]:
- Conveyance upgrades, including:
− Increasing pipe diameters to improve pipe flow capacity;
− Adjusting pipe slopes to improve pipe flow capacity; and
− Laying deeper pipes to reduce HGL issues;
- I/I reduction (e.g. identifying areas with high I/I, relining older pipes);
- Installation of backwater valves at individual properties' service lines, to reduce the
risk of basement flooding if the HGLs are within basement level; and
- Storage within the sanitary collection system in order to control downstream flows
to the WWTP in the collection system.
Furthermore, the impacts of climate change and extreme weather events on the
sanitary collection system include:
- Increased peak inflow during wet weather event with increased precipitation
- Insufficient flushing velocity with decreased precipitation
- Odour issues from sewers due to convective air circulation as a result of
temperature increase
- Increased melt contribution to wet weather flows with temperature increase
- Impact of freeze-thaw cycles on sewers
- Severe storms leading to power outages at pumping stations
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4.4
These impacts should be explored using the hydraulic model (once updated), and
resilience measures should be considered in the development of solutions, which
could include (in addition to the solutions listed previously):
- Additional sewer flushing;
- Condition assessment of sewers prone to impacts of freeze-thaw;
- Backup power sources at pumping stations (where currently not available); and,
- Pumping station overflows (where currently not available)
Opportunities for climate change mitigation (GHG emissions reduction) and energy
savings include:
- Upgrading pumping station pumps (and motors) to increase their efficiency (or
selecting new high-efficiency pumps and motors)
- Reduce incoming sewage to pumping stations with pipe rehabilitation projects and
other I/I reduction measures
These opportunities should be further considered during the detailed planning and
design of solutions developed using an updated hydraulic model.
Although no detailed implementation plan will be developed for the sanitary collection
system as part of this Master Plan, the following steps are recommended to further
improve the confidence in the model and yield a tool that can be used to develop
alternative solutions to resolve confirmed system constraints:
- Implement a flow monitoring program to collect flow and rain data for the Town,
which should then be used to calibrate the model. Updated populations and ICI
distributions, and calibrated per capita rates, diurnal patterns, baseflows (or
Ground Water Infiltration (GWI) rates), and wet weather I/I rates can be determined
and used to improve the Town's understanding of their sanitary system (i.e., leaky
areas, variation in flow distributions, etc.);
- Obtain additional data at the WWTP including wet well levels during large events to
improve the confidence in the boundary conditions applied; and,
- Include the local system pipes in the model. This is not required to develop
solutions for the trunk system, however this would allow the model to identify local
constraints or areas at risk that are currently unknown. Flow monitoring can also be
used to help understand the characteristics of flows within local systems
throughout the Town.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.1
5
Implementation Plan
5.1
Water Treatment Plant (WTP)
The preferred alternative based on the evaluation performed in the Alternatives TM
(Appendix B) maintains the existing WTP site footprint and involves expanding
treatment processes, from the existing plant capacity (10,000 m3/d - limited by the low
lift pumps) to the capacity required to meet the planned growth (20,700 m3/d). A high-
level review of the required process expansion footprints indicates that the 2041
demand could be met by expanding the existing facility on the current property, as
shown in Figure 5.2. For a limited portion of processes, this could be achieved by
expanding individual processes within the existing building footprint, by increasing
hydraulic loading (on a m3/m2/h basis) within maximum acceptable capacity as
recommended by Ministry of the Environment, Conservation and Parks (MECP)
Design Guidelines. For most processes, new structures will be required to be
constructed on site. Expansion will meet firm capacity requirement, so the plant will
develop rated capacity even with the largest unit of a given process being out of
service, for maintenance or repair purpose.
The current site, while relatively small, is expected to be capable of accommodating all
the new construction to meet the target rated capacity. The existing raw water intake
can support the higher water demand, but the new low lift pumps would require a
larger and deeper basin than the current one. The new basin is proposed to be set
below the new chemical feed building. The new standby power generator capable to
meet future plant needs will be set beside the chemical room, within an acoustical
attenuation weatherproof enclosure. Additional clearwell cells and increased high lift
pump capacity will also be required. The original 1914 building has cultural heritage
value or interest and will be preserved in any expansion of the site. This building may
continue to be used for reduced chemical storage, maintenance activities and
administrative purposes.
The proposed expansion of the ACTIFLO and gravity filter processes may consist of
one of the following options:
- Option 1:
−
Addition of two (2) ACTIFLO tanks, and
−
Addition of three (3) steel tank gravity filters.
- Option 2:
−
Addition of two (2) ACTIFLO tanks, and
−
Addition of two (2) concrete tank gravity filters.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.2
- Option 3:
− Addition of two (2) ACTIFLO tanks,
− Addition of two (2) concrete tank gravity filters, and
− Replacement of steel filters with concrete filters.
These sub-options will be evaluated in subsequent stages of the EA process. Once
the existing ACTIFLO basins and/or circular steel tank filters reach the end of their
service life, there may still be enough land on site to replace those with new facilities
before decommissioning; however, this would limit future WTP expansions on the
existing site beyond the 20-year planning horizon. An expansion area adjacent to the
existing WTP or a new plant would need to be identified and secured for the next
required WTP capacity increase. Further expansion may be practical into the open
park space to the East of the existing Canoe Club building.
Figure 5.1: Potential Footprint of On-Site WTP Expansion
The following table details the required capacity increases for each unit process to
meet the projected year 2041 maximum day water demand. A cost estimate and
timing for the required upgrades is further outlined in Section 5.1.1.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.3
Table 5.1:
Unit Process Capacity Increases for WTP Expansion
Process
Existing Capacity (1)
Proposed
Maximum Day
Demand Process
Capacity Increase
Maximum Day
Capacity Required to
meet 2041 Population
Water Demands (2)
Low Lift Pumping
10,000 m3/d
10,700 m3/d
20,700 m3/d
Water Storage Tank
(Clearwells)
2,960 m3
1,590 m3
4,550 m3
1,530 m3
6,080 m3
Chemical Feed Systems,
Power Supply, Generator,
SCADA, site piping and
other civil works
-
-
-
Gravity Filters, Backwash
Tank, & Backwash
Equalization Tank
13,400 m3/d (limited
by the gravity filters)
7,300 m3/d
16,000 m3/d
20,700 m3/d
ACTIFLO Basins
12,000 m3/d
8,700 m3/d
20,700 m3/d
High Lift Pumping
16,800 m3/d
14,700 m3/d
31,500 m3/d
Table Notes:
(1) Assuming all units in operation
(2) With largest unit out of service (i.e. firm capacity)
5.1.1
Cost Estimate & Timing - WTP Upgrades
The proposed WTP upgrades are provided below by process area and include an
opinion of probable cost (Class 4 estimate (-30% to +50%) in $CAD 2022) and timing
for the upgrades.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.4
Table 5.2:
Cost Estimate & Timing for WTP Upgrades
Process System
Opinion of Probable
Construction Cost (2022
$CAN)
Proposed Upgrades or Notes
2023 - 2025: Increase WTP capacity to 20,700 m3/d to support population growth up to 2041
Power Supply, Generator & SCADA
$1,700,000
-
Upgrading the plant's standby power system, including replacing the water-cooled diesel generator with an air-cooled diesel or natural gas generator within a sound
attenuating, weatherproof enclosure, having rated capacity sufficient to meet the 2041 standby power needs
-
Upgrading the plant's SCADA system
Low Lift Pump & Chemical Feed
Building
$2,640,000
-
Installing a new Chemical Feed and Low Lift Pumping Building adjacent to the existing Low Lift Pumping Building
-
Replace low lift pumps and install in new building
-
Upgraded chemical feed systems to resolve 30-day chemical storage issue
-
Replacing the gaseous chlorine feed system with a sodium hypochlorite solution feed system
-
Relocating the fluoride feed system to the existing gaseous chlorine feed room
-
Demolishing the lime feeder
-
Implementing a carry water-based sand transfer system in the existing chemical storage room, to carry ACTIFLO sand to the ACTIFLO basins
Clearwell Expansion
$2,550,000
-
Expanding the clearwells to meet chlorine contact and additional emergency storage requirements to meet 2041 projected water demand
High Lift Pump Upgrades
$600,000
-
Replacing high lift pumps to meet 2041 peak hour demand flow rate
-
Upgrading the HVAC system in the High Lift Pump Room.
Site Piping and Other Civil Works
$250,000
-
Includes connecting the raw water intake pipe to the new Low Lift Pumping Building
Gravity Filters, Backwash Tank,
Backwash Equalization Tank
$4,140,000
-
Installing new gravity filters (two (2) new concrete gravity filters have been assumed for preliminary costing)
-
Installing new backwash equalization tank and new backwash pumps
-
Installing a duplex low lift pump system to transfer a portion of the current ACTIFLO basin clarified water to the new gravity filters
ACTIFLO Basins with Chemical Feed
System Upgrades
$1,760,000
-
Install two (2) new ACTIFLO basins and extend chemical feed systems to new basins
Sub-Total
$13,640,000
Contingency, Engineering, &
Additional General Contract Costs
(1)
$5,720,000
-
Includes contingency (20%), engineering (10% - includes design and contract administration), additional general contract costs that are significant factors of
construction contracts, including mobilization/demobilization/bonds/insurance (2%), and contract contingency/cash allowance (10%). Contractor's overhead and
profit is assumed to be included in items above.
Grand Total
$19,370,000
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.5
5.1.2
Climate Change Considerations - WTP
The Phase 1 Report also discusses climate change projections and potential impacts
to each system. The impacts of climate change and extreme weather events on the
WTP include:
- Increased runoff's impact on source water quality due to increased precipitation;
- Flooding during higher river flows due to increased precipitation;
- Low flows impact on water intake and water quality due to decreased
precipitation/prolonged droughts;
- Increase in water demand linked to temperature increases;
- Water quality issues linked to temperature increases;
- Formation of frazil ice at intake structure during low water levels; and
- Severe storms interrupting deliveries or leading to power outages.
To address potential climate change impacts and increase resilience to climate
change, different measures could be integrated in the preferred alternative to expand
the existing WTP. Opportunities for climate change adaptation include:
- Adaptation to flooding risks
− Build new process structures and buildings above the floodplain limit, with a
buffer to accommodate future floods,
− Relocating equipment away from flood-prone areas, and
− Verify and update emergency measures for flooding;
- Adaptation to increased precipitation and impact on source water quality
− Design processes to increase chemical dosing and other operational
parameters in case of degraded source water quality,
− Adapt chemical supply planning based on modified usage, and
− Consider changes in proportion of process wastewater;
- Adaptation to low water levels due to drought
− Design low-lift pumps and basin considering potential low water levels,
− Keep existing raw water intake at current location, which is the deepest point in
the River upstream of the dam, minimizing the risk of frazil ice formation; and
− Implement water conservation measures in the Town to restrict water usage
during periods of drought.
- Adaptation to degraded source quality due to drought
− Design processes which can handle increased solids loading;
- Adaptation to increased potable water demand with increased temperatures
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.6
− Integrate process water usage efficiency in design, and
− Encourage water conservation in the Town; and
- Adaptation to impacts of severe storms
− Design storing capacity to provide additional reserve and minimize impacts of
delayed deliveries on plant operation, and
− Size backup power generators for critical plant processes.
Opportunities for climate change mitigation (GHG emissions reduction) and energy
savings are considered in the evaluations and include:
- Upgrading pumps and other processes to increase their efficiency (or selecting
new high-efficiency pumps and motors);
- Optimizing pump operation and other processes to reduce energy consumption
and process water usage;
- Upgrading backup generator with energy efficient model; and
- Using renewable energy sources.
The impacts and associated mitigation measures for the above noted Schedule C
project will be determined during Phase 3 and 4 of the EA and listed in the ESR.
5.2
Potable Water Distribution System (WDS)
The following presents potential upgrades to the water distribution system to address
existing constraints and meet growth needs. The potential watermain upgrades
consider the implementation of upgrades at the WTP, as described previously.
Watermain upgrades were also identified based on planned or recommended road
upgrades, as provided by the Town. The serviceability of future growth areas outside
the existing water distribution network was also evaluated.
Potential watermain upgrades or additional interconnections were identified. The
recommended infrastructure upgrades are summarized in Table 5.3 and illustrated in
Figure 5.2. As the water distribution system evolves, it is recommended that an up-to-
date version of the hydraulic model which is representative of the system be used
during detailed stages of planning and design of each proposed upgrade, to confirm
the sizing and assess the performance each watermain upgrade, prior to implementing
these modifications. Potential changes in the water distribution system which may
impact the hydraulic analysis include increased demands with population growth,
watermain upgrades, elevated storage tank maintenance (tank offline) and upgrades
of high-lift pumps at the WTP.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.7
For each proposed upgrade, the approval status was also identified in Table 5.3. The
EA schedule types presented are based on the general description of the project
described in the MCEA Manual. Existing piping upgrades and new piping installations
within an existing utility corridor or road allowance are expected to be Schedule A or
Schedule A+ projects. Per the MCEA Manual, Schedule A and A+ projects are pre-
approved as part of this EA; Schedule A+ projects will require notification of the public
prior to implementation. New piping installation outside an existing road allowance or
utility corridor (or right-of-way, ROW) are expected to be Schedule B projects, which
are not approved as part of this EA, and will need to undergo a separate EA process if
required at the time of implementation.
The estimated time to plan, design, tender and construct is dependent on various
factors including the complexity of the work, the approvals process, the length of the
construction season, the ability to secure land and the availability of contractors. The
estimated time to complete additional EA processes is also provided in Table 5.3; this
estimated time does not include required time for design, tender and construction,
which would range between 1 and 2 years, depending on the watermain upgrades.
The estimated costs (including 30% contingency) for each watermain upgrade is also
provided.
The proposed watermain upgrades were categorized in 4 different types of upgrades:
A) Backbone watermain interconnections required within new development
areas: these watermain interconnections would be implemented to address
growth as part of the future development projects. The proposed timing of these
interconnections is based on the phasing of the developments presented in the
Design Basis Memo (Appendix A.2), however it should be re-confirmed once
planning for the development areas begins. These watermain interconnections
will not be approved as part of this ongoing EA; their approval falls under the
purview of the Planning Act. The construction of these backbone watermain
interconnections should be funded by developers.
B) Upgrades to existing distribution system watermains to improve
conveyance to future development areas: these watermain upgrades would
be implemented to address growth when future development areas are built.
The proposed timing of these upgrades is based on the phasing of the
developments presented in the Design Basis Memo (Appendix A.2) or on
known planned road infrastructure upgrades, however it should be re-confirmed
once planning for the development areas and/or road reconstruction begins.
The costs for these watermain upgrades could be factored into development
charges or funded by specific developments they service.
- Project B-1 consists of replacing the existing watermain on Bates Dr with
a larger watermain (B-1a) and extending the watermain to form a loop
with Project A-2 in conjunction with the planned Bates Dr westerly
extension road project (B-1b). While replacing the existing watermain is a
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.8
Schedule A/A+ project (and is hence pre-approved), the watermain
extension will only be a Schedule A/A+ project once the Bates Dr
extension is built. The watermain could be included as part of the road
extension project.
- Projects B-2 to B-11 consist of existing watermain replacement or are
located within existing roadways, and are thus Schedule A/A+ projects,
which are pre-approved.
Cost-sharing opportunities should be explored once planning for the
development areas begins.
C) Upgrades to existing distribution system watermains to improve system
performance: these watermain upgrades are recommended to address
existing water distribution system deficiencies, as identified in Phase 1
(Appendix A.1). These upgrades are recommended to provide the Town with a
stronger and more reliable backbone network, and to improve fire flow
conveyance across the system. Where feasible, these watermain upgrades
were recommended based on known or recommended road upgrade projects,
however timing should be re-confirmed once planning for road upgrade begins.
These projects would require municipal funding.
- Project C-1 is recommended once a municipal roadway connecting
Franktown Rd and McNeely Ave is built. This project is currently not pre-
approved, however, once the roadway is built, it will be a Schedule A/A+
project (and would then be pre-approved). This project is recommended
but is not required to address existing water distribution system
deficiencies.
- Project C-4 is recommended to provide watermain looping and thus
improve fire flow conveyance in this part of the system, whereby fire
flows are below the target threshold of 60 L/s (see Phase 1
(Appendix A.1)). This project would be routed along the existing utility
corridor connecting Johnston St to Hughes St. This project would be a
Schedule A+ project, and is pre-approved, while requiring consultation of
residents prior to implementation.
- Project C-6 is recommended to reinforce the backbone watermain
network and complete the connectivity of 300 mm diameter watermains
in the system. This project would be routed along an existing right-of-way
on Boyd St, connecting Taber St and Arthur St. As ROW is currently
undeveloped, it would a Schedule B project, not approved under this EA
and requiring its own EA process once implementation is decided.
Alternatively, should the adjacent lands be developed and require that
this ROW also be developed, the approval of this project would fall under
the purview of the Planning Act. This project is recommended but is not
required to address existing water distribution system deficiencies.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.9
D) Condition assessment and rehabilitation program for older watermains:
older watermains are recommended for condition assessment as they are
reaching the end of their lifespan and may eventually need to be replaced or
rehabilitated. The proposed timing for replacement or rehabilitation of these
watermains is based on the age of the watermains or the timing of other
projects they may be associated with. Timing and funding should be re-
confirmed following condition assessment and based on future developments
(i.e. if there are benefits to upsizing the watermains during replacement to
improve conveyance to a future development area).
- Projects D-1, D-5 and D-6 are recommended for existing watermains on
Town property or in the existing right-of-way (project D-1 could
potentially also be associated with the redevelopment of Strategic
Property 26 on Emily St, see project D-4). These projects would be
Schedule A/A+ projects and are pre-approved.
- Projects D-2 and D-3 are recommended for existing watermains leaving
the WTP. These projects would be Schedule A/A+ projects and are pre-
approved. For costing purposes, they are not included in the WTP
expansion costs (see Section 5.1.1), however their timing may be
aligned with the WTP expansion.
- Project D-4 is recommended for the existing watermains on the Strategic
Property 26 on Emily St. The existing watermain is currently under a
building. The Town has indicated that, once the property is redeveloped,
the watermain may be abandoned in favour of a new watermain in the
existing right-of-way (ROW). This will need to be re-evaluated as part of
the redevelopment of the site. This project is recommended but is not
required to address existing water distribution system deficiencies. This
project would be a Schedule A/A+ project and would be pre-approved.
Project D-1 may also be implemented as part of this site redevelopment.
A 5th watermain upgrade category (Category E) is also shown in Figure 5.2. These are
approved or recent watermain upgrades or new watermains implemented by private
developers or by the Town. They are shown as they provide additional looping to the
backbone watermain network, however they are not further considered as part of
costing within this Master Plan.
The system was tested under year-2041 peak hour demand, considering the upgrades
proposed herein (WM upgrades and WTP HLP upgrade). Pressures in this scenario
improved from a range of 38 to 68 psi (no upgrades) to a range of 47 to 74 psi. A fire
flow analysis was also completed with all infrastructure revisions implemented. This
analysis showed an overall improvement in the available fire flow with the
implementation of all upgrades and the WTP HLP upgrade, reducing the number of
nodes with fire flows ≤ 60 L/s. Fire flows in the areas around Industrial Ave (north of
the Mississippi River) and in the southwestern quadrant of Town also improve.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.10
Table 5.3:
Proposed Watermain Upgrades
Upgrade
ID
Street
From
To
Type of Upgrade
Total
Length
(m)
Proposed
Diameter
(mm)
Rationale
Year Recommended
Project Schedule &
Approval Status
Estimated Time to
Complete Studies for
Approval(7)
Estimated
Cost
($CAN), incl.
30%
Contingency
A) Watermain interconnections which will be required as part of development areas' servicing(1)
A-1
RG-10
Development
Townline Rd
West
Preston Dr
New Pipe within
Future Development
Area
1,018(1)
200(2)
Development (RG-10)
2026(3) (or implementation of
development)
Approval to be addressed by
Planning Act
Not approved as part of this EA
Dependent on development
planning process
$794,000
A-2
RD-36
Development
Bates Dr
Lanark St
New Pipe within
Future Development
Area
324(1)
250(2)
Development (RD-36)
2026(3) (or implementation of
development)
Approval to be addressed by
Planning Act
Not approved as part of this EA
Dependent on development
planning process
$294,000
A-3
IS-10
Development
Edmund St
Lanark St
New Pipe within
Future Development
Area
292(1)
200(2)
Development (IS-10)
2031(3) (or implementation of
development)
Approval to be addressed by
Planning Act
Not approved as part of this EA
Dependent on development
planning process
$228,000
A-4
UG-50
Development
Robertson
Ln
Cavanagh
Rd/East Boundary
New Pipe within
Future Development
Area
759(1)
300(2)
Development (UG-50)
2026(3) (or implementation of
development)
Approval to be addressed by
Planning Act
Not approved as part of this EA
Dependent on development
planning process
$888,000
A-5
RG-50
Development
Lake Ave
W/Peckett
Dr
Cavanagh
Rd/East Boundary
New Pipe within
Future Development
Area
1,297(1)
300(2)
Development (RG-50)
2026(3) (or implementation of
development)
Approval to be addressed by
Planning Act
Not approved as part of this EA
Dependent on development
planning process
$1,517,000
B) Upgrades to existing distribution system watermains to improve conveyance to future development areas
B-1a
Bates Dr
Smythe Rd
Bates Dr Existing
Dead-End
Existing Pipe
Replacement
233
250
Development (IS-10,
RD-36) & Road
Upgrade
2026(3) (or implementation of
development or year of road
reconstruction)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$212,000
B-1b
Bates Dr
Bates Dr
Existing
Dead-End
West Extension to
RD-36
Development
Existing Pipe
Extension within
Future Roadway
219
250
Development (IS-10,
RD-36) & Road
Upgrade
2026(3) (or implementation of
development or year of road
reconstruction)
Schedule A/A+* if road is built
Not yet approved
½ Year
$199,000
B-2
RD-36
Development
Connection to
Bridge St
Bridge St
Edmund St
Existing Pipe
Replacement
193
200
Development (IS-10,
RD-36)
2026(3)(or implementation of
development))
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$151,000
B-3
Townline Rd East
& Lanark St
Industrial
Ave
IS-10
Development
Existing Pipe
Replacement
393
200
Development (IS-10,
RD-36)
2026(3) (or implementation of
development)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$307,000
B-4
Bridge St
Thomas St
Quarry Rd
New Pipe within
Existing Roadway
106
200
Development (IS-10,
RD-36, RG-10)
2026(3) (or implementation of
development)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$82,000
B-5
Mullett St
S of
Rosamond
St
William St
Existing Pipe
Replacement
207
250
Development (IS-10,
RD-36)
2026(3) (or implementation of
development)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$189,000
B-6
Joseph St &
Preston Dr
McKenzie St
N of Warren St
Existing Pipe
Replacement
442
200
Development (RG-10)
2026(3) (or implementation of
development)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$345,000
B-7
Joseph St &
Preston Dr
High St
Townline Rd W
Existing Pipe
Replacement
323
250
Development (RG-10)
2026(3) (or implementation of
development)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$294,000
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.11
Upgrade
ID
Street
From
To
Type of Upgrade
Total
Length
(m)
Proposed
Diameter
(mm)
Rationale
Year Recommended
Project Schedule &
Approval Status
Estimated Time to
Complete Studies for
Approval(7)
Estimated
Cost
($CAN), incl.
30%
Contingency
B-8
Townline Rd W
Joseph St
Edwards Dr
Existing Pipe
Replacement
200
200
Development (RG-10)
2026(3) (or implementation of
development)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$156,000
B-9
Nelson St
N of Brown
St
Findlay Ave, E of
Knox St
Existing Pipe
Replacement
626
300
Development (RD-43,
UG-20) & Road
Upgrade
2028(4) (or year of road
reconstruction)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$733,000
B-10
Cavanagh Rd
Roe St
East Boundary
New Pipe within
Existing Roadway
443
300
Development (UG-50,
RG-50) & Road
Upgrade
2027(4) (or year of road
reconstruction)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$519,000
B-11
Lake Ave E
E of Neelin
St
McNeely Ave
Existing Pipe
Replacement
586
300
Development (UG-50,
RG-50) & Road
Upgrade
2030(3) (or implementation of
development, or year of road
reconstruction)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$685,000
C) Upgrades to existing distribution system watermains to improve system performance
C-1
Hwy 7 North
Special
Connection
Franktown
Rd
McNeely Ave
New Pipe within
Future Roadway
622
300
Long-Term Street
Network Improvement
2041(4) (or year of road
construction)
Schedule A/A+* if road is built
Not yet approved
1 Year once road is built
$728,000
C-2
William St
Rosamond
St
Townline Rd East
Existing Pipe
Replacement
721
250
Improved Fire Flow
Conveyance
Medium- to long-term to
address existing deficiencies
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$657,000
C-3
Townline Rd
East/Ramsay
Concession 8
W of
McNeely
Ave
Industrial Ave
New Pipe within
Existing Roadway
897
250
Potential Long-Term
Road Project, Improved
Fire Flow Conveyance
& Watermain Backbone
Network Improvements
Medium- to long-term to
address existing deficiencies
or year of road project
implementation
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$816,000
C-4
Along stormwater
management
pond, within
existing utility
corridor
Johnston St
Hughes St
New Pipe within
Existing ROW
271
150
Improved Fire Flow
Conveyance
Medium- to long-term to
address existing deficiencies
Schedule A+
Pre-approved
Will require consultation prior to
implementation
1 Year for consultation
$176,000
C-5
Morris St
Mississippi
Rd
West of Dunham
St (Bodnar Lands)
Existing Pipe
Replacement
232
200
Watermain Backbone
Network Improvements
2031(4) (or year of road
construction)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$181,000
C-6
Extend WM on
Boyd St
-
-
New Pipe Outside of
Existing Roadway or
ROW
47
300
Watermain Backbone
Network Improvements
Medium- to long-term to
improve watermain backbone
network
Schedule B or addressed by
Planning Act(8)
Not approved as part of this EA
and will require separate EA
1 Year or dependent on
development process
$56,000
D) Condition assessment and rehabilitation program for older watermains(6)
D-1
Strategic Property
26 (SP-26; 115
Emily St)
SP-26
Mississippi River
Crossing
Existing Pipe
Condition
Assessment &
Relining
198
250
Watermain Age & Site
Redevelopment
2026(3) (or implementation of
site re-development)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$82,000
D-2
WTP Feed
WTP
SP-26
Existing Pipe
Condition
Assessment &
Relining
171
300
Watermain Age & WTP
Upgrades
2025(5) (or year of WTP
upgrades)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$71,000
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.12
Upgrade
ID
Street
From
To
Type of Upgrade
Total
Length
(m)
Proposed
Diameter
(mm)
Rationale
Year Recommended
Project Schedule &
Approval Status
Estimated Time to
Complete Studies for
Approval(7)
Estimated
Cost
($CAN), incl.
30%
Contingency
D-3
WTP Process
Water Pipe
-
-
Existing Pipe
Condition
Assessment &
Relining
60
300
Watermain Age & WTP
Upgrades
2025(5) (or year of WTP
upgrades)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$25,000
D-4
Strategic Property
26 (SP-26; 115
Emily St)
SP-26
Emily St
Existing Pipe
Condition
Assessment &
Relining
83
300
Watermain Age & Site
Redevelopment
2026(3) (or implementation of
development)
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$34,000
D-5
Flora St
McRostie St
High St
Existing Pipe
Condition
Assessment &
Relining
156
250
Watermain Age
End of watermain lifespan
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$65,000
D-6
Industrial Ave &
Bruce Cres
Townline Rd
East
Bruce Cres &
Industrial Ave
Existing Pipe
Condition
Assessment &
Relining
824
200
Watermain Age
End of watermain lifespan
Schedule A/A+
Pre-approved
½ Year if consultation
required prior to
implementation
$337,000
Notes
(1) Backbone watermain only; does not include complete servicing of development area.
(2) Watermain sizing to be confirmed during functional design of servicing for development area.
(3) Proposed timing based on phasing presented in the Design Basis Memo (Appendix A.2); timing to be confirmed based on development plans.
(4) Proposed timing based on planned road infrastructure upgrades.
(5) Proposed timing may be aligned with WTP upgrades.
(6) Cost for rehabilitation program only; cost for condition assessment is not included.
(7) Estimated time to complete studies for approval only; does not include estimated time for design, tender and construction (additional 1-2 years depending on project).
(8) If adjacent lands are developed and require that the ROW be developed, approval will fall under the purview of the Planning Act.
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H IGH W AY
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BRIDGE ST REET
CO U NT Y
RO AD
29
T O W NLINE RO AD W EST
H IGH W AY 15
MCNEELY
AV ENU E
FINDLAY
AV E
Q U EEN ST SO U T H
P ARK
AV E
MO O RE ST
MCKENZIE ST
LAKE AV E EAST
LAKE AV E W EST
V ICT O RIA ST
CH ARLES ST
EMILY ST
RO BERT SO N LN
JU LIAN ST
KING ST
NICH O LS CRES
DO U CET T DR
DU NH AM ST
ANN ST
W ARREN ST
FRO NT ST
DO LAN ST
P ECKET T DRIV E
MCRO ST IE ST
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ALEXANDER ST
MCNEELY
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JU DSO N ST
T O W NLINE RD W
REAR ST
ST O NEW AT ER BAY
FLEGG W AY
GEO RGE ST
JU DSO N LN
JO H N ST
LISGAR ST
SU SSEX ST
Q U ARRY RD
EAST W O O D DR
BO YD ST
P O W ER ST
T O W NLINE RD W EST
RIDDELL ST
DU NLO P RO AD
MAT T H EW S ST
CAT H ARINE ST
T H O MAS ST
FRANKLIN ST
T O W NLINE RD EAST
RAMSAY ST
ALBERT ST
P O LLO CK DR
CO ST ELLO DR
H O O P ER ST
CO LEMAN ST
LENO RE ST
BAINES ST
CH ARLO T T E ST
H ERRIO T T ST
H U RDIS W AY
JAMES ST
MISSISSIP P I RD
RO CH EST ER ST
NELSO N ST W EST
ART H U R ST
MCDIARMID LANE N
BARKER ST
MCDO NALD ST
W ILSO N ST
CAMP BELL ST
W O O DW ARD ST
MO RRIS ST
SINCLAIR AV E
DO NALD ST
EDMU ND ST
BU RGESS ST
FLO RA ST
BRIDGE ST
H U GH ES ST
MU LLET T ST
SARAH ST
NELSO N ST EAST
LAU RA ST
MAILEY DR
LYNDH U RST ST
P RIME P LACE
MO FFAT T ST
MAP LE LANE
LO RNE ST
Q U EEN ST NO RT H
CO O R CRT
P RINCE ST
MO RP H Y ST
CAV ANAGH RD
P RINCESS ST
CARLET O N ST
BELL ST
MU NRO ST
W AT ER ST
CARMEL ST
INDU ST RIAL
AV E
W RIGH T ST
DU LMAGE CRES
MCEW EN ST
T ABER ST
BRICK ST
BEGLEY ST
CH RIST IE ST
ARGYLE ST
NEELIN ST
MCLAREN ST
BAT ES DR
H IGH ST
MCGREGO R ST
P AT T IE DRIV E
SMYT H E RD
BECKW IT H ST
JO H NST O N ST
JO SEP H ST
H AW T H O RNE AV E
P ET ER ST
FRANK ST
CRAM ST
CRAMP T O N DR
BO RLAND DR
RO SAMO ND ST
BENNET T ST
SANT IAGO ST
REYNO LDS AV
CU MMINGS AV E
MARY ST
MIGU EL ST
MCP H AIL RO AD
ALLAN ST
ANT RIM ST
DU FFERIN ST
ST O KES DRIV E
DU NCAN ST
CAP T AIN A. RO Y BRO W N BLV D
BARCLAY ST
MACART H U R AV E
W ELLINGT O N ST
H ENRY ST
H IGH W AY 7
H ACKBERRY T RAIL
DU NLO P RD
W Y LIE W AY
CALDW ELL ST
SP ICER ST
NAP O LEO N ST
GRANT ST
FERRILL CRES
BLAIR ST
KNO X ST
BRYCE CO U RT
LANSDO W NE AV E
GRAH AM ST
MILL ST
LEMAIST RE ST
FRANKT O W N RD
BO U NDARY RD
RAMSAY CO N 8
CO DE CRES
FRANCIS ST
ANT O NAKO S DR
FANNING ST
P EEV ER P LACE
T ERRY FO X AV E
MCP H AIL RD
ELIZABET H ST
CO MBA DR
W AT ERSIDE DRIV E
RO E ST
BRU CE CRES
P AT T ERSO N CRES
W ILLIAM ST
LANARK ST
H IGH W AY 15
EST
WTP
C-5
B-5
D-3
B-9
C-6
B-6
B-7
E-4
D-4
B-11
B-4
C-2
D-1
B-2
D-5
D-6
D-2
B-8
B-3
B-1b
B-1a
C-4
A-3
A-4
A-2
B-10
A-5
C-1
E-2
E-3
C-3
E-1
A-1
409000
409000
410000
410000
411000
411000
412000
412000
413000
413000
4998000
4998000
4999000
4999000
5000000
5000000
5001000
5001000
T own of Carleton P lace
Carleton P lace W &W W Master P lan
P h ase 2 Report
163401646 REVA
Carleton P lace, O N
P repared by CR on 2022-03-09
Proposed Watermain Upgrades
Disclaim er: T h is docum ent h as been prepared based on inform ation provided by oth ers as cited in th e Notes section. Stantec h as not verified th e accuracy and/or com pleteness of th is inform ation and sh all not be responsible for any errors or om issions wh ich m ay be incorporated h erein as a result. Stantec assum es no responsibility for data supplied in electronic form at, and th e recipient accepts full responsibility for verifying th e accuracy and com pleteness of th e data.
Project Location
Client/Project
Figure No.
Title
Notes
1. Coordinate System : NAD 1983 U T M Zone 18N
2. Base features produced under license with th e O ntario Ministry of Natural
Resources and Forestry © Q ueen's P rinter for O ntario, 2021.
3. Data Source:wm_mains.shp from th e T own of Carleton P lace
4. Abbreviations: EST = Elevated Storage T ank; W M = W aterm ain(s); W DS = W ater
Distribution System ; W T P = W ater T reatm ent P lant
0
0.5
Kilom eters
(
$
$¯
(At original docum ent size of 11x 17)
1:16,500
Legend
Watermain Diameter (D)
< 150 m m
150 m m
200 m m
250 m m
300 m m
≥ 350 m m
Watermain Upgrade Type
A - Backbone W M Connections
Required in Developm ent Area
B - U pgrades W DS to Service
Developm ent Area
C - U pgrades to W DS to Im prove
Service
D - Condition Assessm ent &
Reh abilitation of O lder P ipes
E - Approved/Recent W M U pgrades
by Developers or T own
Developm ent
5.2
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.14
5.2.1
Cost Estimate & Phasing - WDS
Table 5.4 summarizes the total costs (2022 dollars) for the proposed water distribution
infrastructure upgrades. A contingency of 30% has been applied to all costs. Detailed
costs for each watermain project are presented in Table 5.3. The preliminary timeline of
the costs borne by the Town (as outlined in Table 5.3) is illustrated in Figure 5.3.
Table 5.4:
Summary of Opinion of Probable Costs for Water Distribution
Infrastructure Upgrades (2022 dollars)
Infrastructure Upgrade
Opinion of Probable
Costs(1)
Funding Source
A) Watermain interconnections which will be required
as part of development areas' servicing(2)
$3.7M
Developers
B) Upgrades to existing distribution system
watermains to improve conveyance to future
development areas
$3.9M
Town/Developers
C) Upgrades to existing distribution system
watermains to improve system performance
$2.6M
Town
D) Condition assessment and rehabilitation program
for older watermains (cost of rehabilitation only)
$0.6M
Town
Notes
(1) 2022 dollars; includes contingency of 30%.
(2) Approximate costing for backbone watermain; does not include complete servicing of entire
development area.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.15
Figure 5.3: Preliminary Water Distribution System Upgrades Cost Timeline
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.16
5.2.2
Climate Change Considerations - WDS
Potential climate change impacts on the water distribution system were identified in the
Phase 1 Report (Appendix A.1). The impacts of climate change and extreme weather
events on the potable water distribution system include:
-
Increase in water demand linked to temperature increases;
-
Chlorine depletion due to temperature increases; and
-
Impact of freeze-thaw cycles on watermains (e.g. watermain breaks).
To address potential climate change impacts and increase resilience to climate change,
different measures could be integrated in the potable water distribution system.
Opportunities for climate change adaptation include:
-
Adaptation to increased water demand
−
Encourage water conservation in the Town
-
Adaptation to increased chlorine depletion
−
Plan for increased chlorine needs
−
Identify locations for rechlorination throughout the water distribution system
-
Adaptation to freeze-thaw cycles
−
Identify watermains prone to the impacts of freeze-thaw (e.g. watermain break
locations), perform a condition assessment on those watermains and identify
rehabilitation needs.
Opportunities for climate change mitigation (GHG emissions reduction) and energy
savings include:
-
Replacing infrastructure which generate high head losses (e.g., valves, leaky
watermains)
-
Water efficiency efforts.
Best Management Practices will be used to mitigate impacts associated with pre-
approved Schedule A and A+ projects and determined during Detail Design.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.17
5.3
Wastewater Treatment Plant (WWTP)
The preferred alternative based on the evaluation performed in the Alternatives TM
(Appendix B) consists of expanding the WWTP within the existing site footprint and on
the neighbouring household hazardous waste and compost yard site to the east (also
owned by the Town, see Figure 5.4). This option seeks to maintain use of the existing
processes, where practical, while still providing the necessary treatment capacity to
accommodate future growth.
It is expected that upgrades to the WWTP may involve a combination of the following:
-
Constructing a new or expanded headworks building including raw sewage pumping
station.
-
Repurposing the existing phys/chem clarifiers as primary clarifiers.
-
Increasing the aeration tank volume and area.
-
Addition of a new secondary clarifier area.
-
Converting the secondary digester into a parallel primary digester.
-
New dewatering building.
-
New mechanical WAS thickening process.
-
New filtration and UV disinfection process equipment and building.
Alternatively, a complete retrofit of the plant into a non-conventional treatment train
(such as membrane bioreactor) may be considered during conceptual design.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.18
Figure 5.4: Potential Footprint of WWTP Expansion
The design basis for expanding the WWTP, including design flows, design loads,
effluent limits, and perceived challenges/constraints, was defined in the following
reports preceding this Phase 2 Report:
-
Design Basis Memo (Appendix A.2) - analyzed existing conditions of the plant, and
-
Phase 1 Report (Appendix A.1) - presented future flow and load projections.
As the Town's WWTP discharges into the Mississippi River, an assimilative capacity
study will be completed in Phase 3 of this project to determine the appropriate effluent
limits and mixing zone for the facility. These proposed limits will be reviewed by key
stakeholders, including the MECP, prior to being used for the design of the WWTP's
treatment process upgrades.
The key design basis findings that are anticipated to impact the proposed WWTP
expansion include:
1. More stringent effluent limits - The anticipated future effluent limits for total
phosphorus (TP) will require tertiary filtration to be implemented with the WWTP
expansion. In addition, the anticipated future winter total ammonia nitrogen (TAN)
limits will require a continuously nitrifying sludge mass and impose a de-rating of
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.19
the existing activated sludge process (ASP), thus requiring additional secondary
treatment capacity for the plant expansion.
2. Higher design flows - The projected 2041 peak hour flow of 42.5 MLD will require
significant capacity increases for raw sewage pumping, screening, and grit removal
processes.
3. Higher design loads - The influent design loads are anticipated to increase
proportionally with service population and combined with the need for continuous
nitrification, will require significant increase in aeration tank and secondary clarifier
capacities.
A Facility Optimization Program (FOP) Report (OCWA, 2021-08-25) was prepared to
assess the current capacity of existing WWTP unit processes relative to existing effluent
treatment needs. Information on the current unit process capacities from the FOP was
used in combination with Stantec's preliminary process calculations to estimate future
unit process size requirements to meet the design basis needs (Table 5.5).
Table 5.5
Unit Process Capacity Increases for WWTP Expansion
Process
FOP Capacity
Analysis (OCWA,
2021)
Required Capacity by
2041
Plant Capacity
Increase
Raw Sewage Pumping
26 MLD firm capacity
(2+1 pumps)
42.5 MLD (firm
capacity)
Additional 16.5 MLD
firm pumping capacity
Screening
26 MLD (one screen)
42.5 MLD
Additional 16.5 MLD
screening capacity
Grit Removal
10 MLD firm capacity
(1+1 vortex units)
42.5 MLD
Additional 22.5 MLD
grit removal capacity
Primary Clarifiers (PC)
15 MLD annual
average flow equivalent
(with all 5 units
operating)
Existing capacity may
be sufficient if
chemically enhanced
primary treatment
(CEPT) is implemented
or add one PC of equal
size to existing
Implement CEPT with
existing PC capacity or
add one PC.
Aeration Tanks (AT)
7.9 MLD annual
average flow
equivalent, without
winter nitrification
Existing AT, operated
for winter nitrification
will be de-rated to
approximately 6.4 MLD
Additional 4.3 MLD
annual average
equivalent capacity
Secondary Clarifiers
(SC)
7.9 MLD annual
average flow
equivalent, without
winter nitrification
Existing SC, operated
for winter nitrification
will be de-rated to
approximately 6.4 MLD
Additional 4.3 MLD
annual average
equivalent capacity
Tertiary Filtration
Not applicable
42.5 MLD filtration
capacity
42.5 MLD filtration
capacity
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.20
Process
FOP Capacity
Analysis (OCWA,
2021)
Required Capacity by
2041
Plant Capacity
Increase
UV Disinfection
5.5 MLD firm capacity
(1+1 UV units)
42.5 MLD (firm
capacity)
Additional 37 MLD firm
capacity
Anaerobic Digestion
4.8 MLD annual
average equivalent
At capacity with current
flows/loading of
approximately 6.5 MLD
Additional 4.8 MLD
average equivalent
primary digester
capacity.
Sludge Storage /
dewatering
7.9 MLD annual
average equivalent
Additional storage
volume and/or
dewatering
recommended to
decrease sludge
hauling fees
Option to either
increase on-site
storage volume and/or
implement dewatering
WAS thickening
Not applicable
Recommended for
improved solids
management.
Recommended for
improved solids
management.
5.3.1
Cost Estimate & Timing - WWTP Upgrades
Table 5.6 provides the preliminary opinion of probable cost for the preferred alternative
solution to expand the WWTP. The example expansion option description and Class 4
level (-30% - +50%) opinion of probable cost provided is intended to be iterated on in
Phase 3 of the EA as several WWTP expansion options will be developed and
evaluated.
The preliminary opinion of probable cost for the WWTP expansion is based on a
conventional activated sludge treatment train with the following assumptions:
- All future flows to the plant to be directed through a common pumping station, new
headworks with screens and vortex grit tanks and existing PCs for peak flows up to
42.5 MLD.
- Primary effluent flows will be split between the existing secondary treatment (ATs +
SCs) process and a new parallel secondary treatment process constructed to the
north of the existing site on adjacent lands. The existing secondary treatment
process will be de-rated (initially estimated at 6.4 MLD annual average flow) to
provide for continuous nitrification. The new secondary treatment process will be
sized to accommodate the balance of flows of approximately 4.3 MLD annual
average flow and provide a full treatment plant capacity of 10.6 MLD in combination
with the existing de-rated plant. The peak flow of 42.5 MLD will be split according to
the same flow split ratio between new and existing plants.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.21
- Secondary effluent from the existing and new SCs will be hydraulically combined
and treated through a new building located north on adjacent lands containing a filter
process and UV disinfection sized for 42.5 MLD peak flow. Disinfected final effluent
will tie into the existing outfall structure. It is assumed that sufficient hydraulic
gradient exists to place filters and UV without supplemental pumping.
- Solids handling upgrades include: converting the existing secondary digester to
primary digester operation, installing a new dewatering process, and installing a new
WAS thickening process.
There may be an opportunity to defer capital expenditures to a later construction phase
for WAS thickening process, dewatering process, phasing new train aeration tank
and/or secondary clarifier, which will be explored in further detail in Phase 3.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.22
Table 5.6
Construction Cost Opinion for Example WWTP Expansion
WPCP Process Area
Opinion of
Probable Cost
(1)
Notes
Raw Sewage
Pumping Station
$1M
Costing assumes larger firm pump capacity required
based on projected PHF of 42.5 MLD, as well as
forcemain modifications to connect to the new Headworks
building.
Headworks
$5M
Costing includes complete replacement and upsizing of
the screening and grit removal equipment to meet PHF of
42.5 MLD. In addition, cost assumes that a new
Headworks building will be constructed offline to house
this equipment and mitigate to impacts to operations
during construction.
Primary Clarifiers &
Yard Piping
$2M
Costs included re-routing existing piping to the
physical/chemical clarifiers for use in the biological
treatment process. This also includes general yard piping
not accounted for elsewhere.
Aeration Tanks
$5M
Costing assumes that new aeration tank with additional
capacity would be required based on the requirement for
continuous nitrification. In addition, the costs include
blower upgrades and a new blower building (to account for
separate aeration zones) and installation of fine bubble
diffusers in the existing aeration tanks to address existing
operational issues.
Secondary
Clarifiers
$4M
Costing assumed that a new secondary clarifier may be
required to expand plant capacity by approximately 4.3
MLD.
Tertiary Treatment
(Filtration and UV
Disinfection)
$3.8M
Costing assumes that filter and UV equipment must be
sized to meet projected PHF of 42.5 MLD and more
stringent effluent limits for TP and E.Coli removal.
Anaerobic
Digestion Upgrades
$1M
Costing assumes the conversion of the secondary digester
to a primary digester.
Dewatering
$3.5M
Costing assumes new dewatering building required to
house dewatering process equipment.
WAS Thickening
$3M
WAS Thickening was identified as an upgrade required in
the next 20 years to improve solids management at the
plant.
Chemical Storage
Building
$0.5M
Requirement to upgrade the Chemical Storage Building
with the implementation of filtration for tertiary treatment.
Electrical Supply,
Standby Generator
Replacement, and
Boiler Upgrades
$1.5M
Costs to size the new generator to meet the increased
electrical demand from Headworks/Tertiary Treatment
equipment required to meet projected PHF of 42.5 MLD
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.23
WPCP Process Area
Opinion of
Probable Cost
(1)
Notes
Outfall
$0.25M
Potential need to upgrade the plant outfall to meet the
future peak flow requirements to be assessed in future
design stages.
Sub-Total
$30.55M
Contingency,
Engineering, &
Additional General
Contract Costs (2)
$12.82M
Grand Total
$43.4M
Table Notes:
(1) This opinion of probable cost is based on the design basis information, the assumed scope of
work, and using tendered prices from similar scopes of project work for the preferred Alternative
C - Carleton Place WPCP Expansion assuming the existing activated sludge process will be
upgraded conventionally. Alternative options for upgrading the existing plant will also be
considered in Phase 3. The estimate is considered approximately Class 4 estimate ranging from -
30% ($30.8M) to +50% ($65.1M) given the level of detail and excludes: taxes, permits, inflation
beyond 2022, and contaminated soils.
(2) Includes contingency (20%), engineering (10% - includes design and contract administration),
additional general contract costs that are significant factors of construction contracts, including
mobilization/demobilization/bonds/insurance (2%), and contract contingency/cash allowance
(10%). Contractor's overhead and profit is assumed to be included in items above.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.24
5.3.2
Climate Change Considerations - WWTP
The impacts of climate change and extreme weather events on the WWTP include:
-
Increased peak inflow during wet weather event with increased precipitation or
severe storms;
-
Increased peak inflow during spring melt due to higher temperatures and greater
snow loads;
-
Flooding during higher river flows due to increased precipitation;
-
Lower river flows and reduced assimilative capacity due to decreased
precipitation/prolonged droughts;
-
Impact of temperature increase on aeration system;
-
Odour generation with temperature increase;
-
Wet weather treatment of snowmelt with temperature increase; and
-
Severe storms interrupting deliveries or leading to power outages.
To address potential climate change impacts and increase resilience to climate change,
different measures could be integrated in the selected alternative. Opportunities for
climate change adaptation include:
-
Adaptation to flooding risks
− Build new process structures and buildings above the floodplain limit, with a
buffer to accommodate future floods,
− Relocating equipment away from flood-prone areas, and
− Verify and update emergency measures for flooding;
-
Adaptation to increased peak flow to WWTP due to increased precipitation (and/or
snow melt)
− Design processes to accommodate potential upgrades of pumps and other
equipment without major infrastructure upgrades if peak flows increase,
− Incorporate partial plant bypass to maintain some level of treatment during peaks
rather than full bypass, and
− Consider upgrades within the sanitary collection system to reduce peak inflows to
the WWTP;
-
Adaptation to reduced assimilation capacity due to drought
− Design processes to adjust treatment, considering potential reduced assimilation
capacity;
-
Adaptation to odour issues and other impacts to outdoor WWTP processes with
increased temperatures
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.25
− Consider higher oxygen demand and lower oxygen transfer capacity in design of
aeration basins; and
-
Adaptation to impacts of severe storms
− Design storing capacity to provide additional reserve and minimize impacts of
delayed deliveries on plant operation,
− Size backup power generators for critical plant processes, and
− Consider co-generation of energy.
Opportunities for climate change mitigation (GHG emissions reduction) and energy
savings include:
-
Upgrading pumps (and motors) to increase their efficiency (or selecting new high-
efficiency pumps and motors);
-
Reduce incoming sewage with I/I reduction and water conservation measures;
-
Continue capture of gases from digesters and use flare to convert CH4 to CO2; and
-
Consider co-generation of heat and energy once plant reaches a size that is
practical for implementation.
Mitigation measures associated with impacts resulting from Schedule B projects will be
determined during the EA. The impacts and associated mitigation measures for
Schedule C projects will be determined during Phase 3 and 4 of the EA and listed in the
ESR.
5.4
Permits and Approvals
The following permits and approvals should be considered during future design stages
of the WWTP and WTP Upgrades when the scope of the projects has been further
refined.
Table 5.7:
Potential Permit and Approval Requirements
Agency
Description of Permit / Approval
Fisheries and
Oceans
Canada
-
Any proposed modifications to the WTP water intake and the WWTP outfall may
result in impacts to the aquatic environment of the Mississippi River and should be
assessed through a Fisheries Act self-screening. A project review (RFR) or
Fisheries Act Authorization (FAA) may apply if impacts to fish and aquatic habitat
cannot be avoided or mitigated during design and construction.
Ontario
Ministry of
Environment,
Conservation
and Parks
-
An updated Environmental Compliance Approval for the WWTP will be required if
the plant capacity is increased.
-
An updated Drinking Water Works Permit and Permit to Take Water (PTTW) will be
required for the WTP if the plant capacity is increased.
-
New standby power generators are expected to be less than 700 kW and therefore
will be Environmental Activity and Sector Registry (EASR) eligible activities.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.26
Agency
Description of Permit / Approval
-
A temporary PTTW or EASR may be required during construction activities if
dewatering activities are required.
-
Relocation permits, for wildlife or fish, may be required if removals are needed
during construction and timing window restrictions cannot be accommodated.
-
Permit or other authorization may be required to conduct an activity that could
permanently impact an endangered or threatened plant or animal or its habitat
through an Information Gathering Form (IGF).
Ministry of
Tourism,
Culture and
Sport
-
Archaeological and Cultural Heritage assessments, including fieldwork and
reporting, are required to comply with the Ministry's 2011 Standards and
Guidelines for Consultant Archaeologists. Additional surveys are required for
Schedule B projects.
Mississippi
Valley
Conservation
Authority
(MVCA)
-
Planned construction or alterations of land (e.g. excavate or fill) near a wetland,
watercourse, or along a shoreline, may require a permit from MVCA. Permits are
issued in accordance with the provincial Conservation Authorities Act and Ontario
Regulation 153/06: Mississippi Valley Conservation Authority: Regulation of
Development, Interference with Wetlands and Alterations to Shorelines and
Watercourses.
Town of
Carleton
Place
-
A Building Permit may be required to receive approval for new building
construction from the Town's Building Department.
-
Should any trees require removal, their removal will comply with applicable
municipal by-laws.
Electrical
Safety
Authority
-
All electrical installations, repairs, replacements or alterations in Ontario need to be
done in compliance with the Ontario Electrical Safety Code, and all necessary
Notifications ("permits") must be taken out. This creates a permanent record of the
work and triggers a review process by the Electrical Safety Authority.
Local Utilities
-
Utility clearance from local utilities, as required.
5.5
Summary of Implementation Plan
A preliminary implementation plan has been developed (Figure 5.5) to propose a
method for the Town to phase upgrades to water and wastewater infrastructure over the
20-year planning horizon. The opinions for probable cost for the required WTP and
WWTP Upgrades will be further refined in Phase 3 of the EA process; however, this
high-level implementation plan will assist the Town's efforts in planning for upcoming
upgrades. WDS upgrades are presented as total costs; the breakdown per upgrade
category is provided in Section 5.2.1.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
5.27
Figure 5.5: Preliminary Implementation Plan
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
6.1
6
Conclusions and Next Steps
This report presents the preferred solutions of the Town of Carleton Place's Master
Plan, in support of the Municipal Class Environmental Assessment for the expansion of
the Town's Water Treatment Plant (WTP) and Wastewater Treatment Plant (WWTP)
and for current and future needs of the potable water distribution and wastewater
collection systems. An implementation strategy was developed for each solution.
Once finalized, this Master Plan will be posted to the project website, and a Notice of
Completion for Schedule A and A+ projects identified for the potable water distribution
system will be published. Schedule C projects (WTP and WWTP expansions) will be
further investigated in Phase 3 and 4 of the EA, whereby further consultation (PIS 2)
and opportunity to review the Environmental Study Report will occur.
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
7.1
7
References
Background Information:
- The Labour Market Group of Renfrew & Lanark. 2017. "Economy Overview Carleton
Place." https://carletonplace.ca/photos/custom/Economy-Overview-CP-2018.pdf.
- Corporation of the Town of Carleton Place. 2022. Carleton Place: Business.
Accessed 02 24, 2022. https://carletonplace.ca/business.php.
- Mississippi Valley Conservation Authority (MVCA). 2015. Climate Change
Implications for Small Waterpower Facilities - A Watershed Perspective. Natural
Resources Canada Project - AP223. December 2015.
- Ministry of Natural Resources and Forestry (MNRF). 2020. Mississippi River. Water
Management Plan. Final Report. Amended October 2020.
Development Planning Studies:
- Development Charges By-law and Background Study (Watson & Associates,
December 2020).
- Preliminary Findings on Residential Supply vs Demand and three (3) growth
scenarios for the Town of Carleton Place letter (J.L. Richards, March 2021).
- Council Report for Comprehensive Review (Town of Carleton Place / J.L. Richards,
March 2021).
Water Treatment Plant:
- Carleton Place Drinking Water System (OCWA, 2017).
- Carleton Place Drinking Water System (OCWA, 2018).
- Carleton Place Drinking Water System (OCWA, 2019).
- Carleton Place Drinking Water System (OCWA, 2020).
- Permit to Take Water No. 1310-9UHPPW (MECC, March 13, 2015).
- Drinking Water Works Permit Number 172-201, Issue Number 3 (MECP, February
26, 2021).
- Drinking Water Works License Number 172-101, Issue Number 3 (MECP, February
26, 2021).
- Addendum to the August 2011 Water Treatment Plant Capacity Expansion Master
Plan (J.L. Richards. 2018).
- Resiliency Plan - Water Treatment Plant (J.L. Richards, 2018).
- Water Treatment Plant Expansion Master Plan (J.L. Richards, 2018)
Carleton Place Water & Wastewater Master Plan - Phase 2 Report
7.2
- Water Treatment Plant Capacity Expansion Master Plan (Stantec Consulting Ltd.,
2011).
Wastewater Treatment Plant:
- Carleton Place Drinking Water System (OCWA, 2017).
- Carleton Place Drinking Water System (OCWA, 2018).
- Carleton Place Drinking Water System (OCWA, 2019).
- Carleton Place Drinking Water System (OCWA, 2020).
- Receiving Water Assessment Review for Carleton Place Water Pollution Control
Plant Discharge to Mississippi River (Stantec Consulting Ltd., May 2009).
- Water Pollution Control Plant Capacity Expansion Master Plan (Stantec Consulting
Ltd., August 2011).
- Facility Optimization Report for the Carleton Place Water Pollution Control Plant
draft memo (OCWA, April 2020).
- Carleton Place Water Pollution Control Pant Certificate of Approval Number 5001-
7FZT4A, (MOE, October 3, 2008.
- Addendum to the August 2011 Water Pollution Control Treatment Plant Capacity
Expansion Master Plan (J.L. Richards, 2018).
- Resiliency Plan - Wastewater Treatment Plant (J.L. Richards, 2018).
- Wastewater Treatment Plant Expansion Assessment (J.L. Richards, 2018).
Sanitary Sewer System:
- Trunk Sanitary Sewers - Hydraulic Capacity Investigation memo (J.L. Richards,
March 2014).
- Update to Wastewater Trunk Sanitary Sewer Model memo (J.L. Richards, March
2021).
- Condition Assessment of Pumping Stations (J.L. Richards, 2018).
- Asset Management Plan (Town of Carleton Place, 2017).
Water Distribution System:
- Hydraulic Water Model Investigation Future Development memo, (J.L. Richards,
September 2013).
- Potable Water Storage Study (J.L. Richards, November 2018).
- Town of Carleton Place 2021 WaterCAD Model Update (J.L. Richards, March 2021).
- Asset Management Plan (Town of Carleton Place, 2017).