Portsmouth Pumping Station Redirect and Trunk Watermain
Utilities Kingston has completed a Class Environmental Assessment (EA) to evaluate the flow direction of the Portsmouth Pumping station servicing the Portsmouth area.
The purpose of this EA study was to identify how to best support further development (through intensification) in the City of Kingston through sustainable servicing. The City’s existing sewer network is currently laid out such that wastewater flows generated in the central and east areas of the City are conveyed to the Ravensview Wastewater Treatment Plant (WWTP) and wastewater flows generated in the west area of the City are conveyed to the Cataraqui Bay WWTP. Due to a planned increase in development through the central and east area of the City, higher wastewater flows are projected to be conveyed through the central and eastern portions of the City’s wastewater network. The EA study evaluated the options and recommended the redirection of the flow from the Portsmouth Pumping Station (centrally located) to the west towards the Cataraqui Bay WWTP in order to help alleviate any potential system constraints in the central and eastern portions of the City’s wastewater network. This recommendation also provides additional opportunity to potentially reduce combined sewer overflows (CSO) within the system.
The EA study was undertaken in conjunction with the Front Road Watermain Interconnection project, a Schedule A+ undertaking. For additional information on the Front Road Watermain Interconnection project, please contact Utilities Kingston contact listed below.
The Municipal Class Environmental Assessment (“Class EA”) process is approved under the Ontario Environmental Assessment Act and allows municipalities to follow a Class EA process when undertaking municipal infrastructure projects. The Portsmouth Pumping Station Flow Direction project is being carried out as a Schedule B undertaking. The purpose of the Class EA screening process is to identify any potential environmental impacts associated with the proposed works and to plan for appropriate impact mitigation. This process includes consultation with the public, stakeholders and review agencies.
In 2013, Genivar (now WSP Canada Inc.) was retained by Utilities Kingston for completion of the Environmental Assessment, Detailed Design, Construction Administration and Commissioning for both the Portsmouth Pump Station Flow Redirection and the Front Road Watermain Interconnection.
The Environmental Assessment is now complete, please see the links to the report in the table below. The following summarizes the findings of the Environmental Assessment:
- The preferred alternative for sustainable servicing is to redirect sewage from the Portsmouth Pumping Station westerly to the Cataraqui Bay Wastewater Treatment Plant. This will allow for additional intenstification within Central Kingston as well as a reduction in bypass volumes along the Harbourfront Trunk Sewer.
- The new sewage forcemain (from the Portsmouth Pumping Station to the Cataraqui Bay Wastewater Treatment Plant) will be constructed at the same time as the large diameter trunk watermain interconnection. Sizes are to be confirmed during design.
- The alignment of the forcemain is predominantly with the municipal road right-of-way along King St West and Front Road. A variation from this is recommended in the area of Portsmouth Village where the alignment will deviate northerly along Union to Kennedy and along Kennedy to Aberdeen Park where the pipe will connect with the Pump Station.
See map in side bar.
Click to see a larger map of the preferred sanitary forcemain alignment.
- The recommended pipe work will be constructed mostly by traditional open-cut methods except in the vicinity of the Little Cataraqui Creek and CNR spur line to Invista, where tunneling will be used to minimize impacts of construction.
The Environmental Assessment File Report can be found at the links below.
|Approximate Schedule for this Project:|
|1. Environmental Assessment||EA Report||July 30, 2015||EA Report|
|Appendix A - Risk Management Memo||APPENDIX A|
|Appendix B - Modeling Memo||APPENDIX B|
|Appendix C - Natural Environment||APPENDIX C|
|Appendix D - Geotechnical Assessment||APPENDIX D|
Appendix E - Utilities Engineering
Appendix F - Traffic Analysis
|Appendix H - Heritage Impact Statement||APPENDIX H|
|Appendix I - Public Notices||APPENDIX I|
|Appendix J - Public Information Centre||APPENDIX J|
|Appendix K - Comments and Responses||APPENDIX K|
|2. Detailed Design||Detailed design of the Portsmouth Pumping Station Upgrades, new interconnecting sewage forcemain to Cataraqui Bay WWTP and new large diameter watermain interconnection.||Commencing September 2014 and ongoing||-|
|3. Construction - Staged||Tendering||
Forcemain and Watermain in the Invista Easement is complete.
Late 2019 for the Front Road/King Street/Union Street/Kennedy Street Section.
Portsmouth Sewage Pump Station - Late 2020
Phased Construction, Forcemain and Watermain from Spring of 2020 to end of 2021, Pump Station 2021/2022
Design and Construction
Detailed design of the linear infrastructure routing has commenced with construction to follow in a phased approach, anticipated for 2020 and 2021. The Portsmouth Pump Station Facility will be scheduled for completion at approximately the same time as the Cataraqui Bay Wastewater Treatment Plant Upgrades project.
The Linear works have been phased with the initial phase, generally described as the "Cataraqui Bay WWTP Servicing - Easement", constructed in 2018. This phase included a portion of the new forcemain and the new water service for the Cataraqui Bay WWTP upgrade located in an easement across a portion of the Invista site from Front Road to the Cataraqui Bay WWTP.
Additional information will be added as the design and construction phase continues.
Schedule and Project Downloads
The approximate construction schedule for this project is as follows.
Linear Section - Phase 1 - Cataraqui Bay WWTP Servicing - Easement
- Construciton of this phase is complete.
Linear Section - Phase 2 - Front Road, King Street West, Union Street and Kennedy Street
- The Construction Contract for the Second Phase of the Linear Section(s),i.e. from Sand Bay Lane and Front Road to the Portsmouth Pump Station and Union Street.
- Construction is planned to commence in early 2020 with substantial completion anticipated by the end of 2021.
For further information please contact Utilities Kingston or the design consultant (WSP Canada Inc.) at the following addresses:
Robert McLachlan, P.Eng
85 Lappans Lane
Kingston, ON, K7L 4X7
Office: 613-546-1181, extension 2339
Kevin Clavet, CET
1224 Gardiners Road, Suite 201
Kingston, ON K7P 0G2