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This project is no longer active. The following information is provided for archival purposes.
Update
A Notice of Study Completion (PDF) has been issued for this project on November 16, 2005. A copy of the Environmental Study Report is now available for public review at the following locations:
Danforth Coxwell Library
1675 Danforth Avenue
Tel: 416-393-7783
Gerrard/Ashdale Library
1432 Gerrard St. E.
Tel: 416-393-7717
Main Street Branch
137 Main Street
Tel:
416-393-7700
Toronto City Hall
100 Queen Street W.
Tel: 416-393-7650
You can also download the report in PDF format:
You will need
to have the FREE Acrobat
Reader to view PDF files. 
The Study
The City of
Toronto is initiating a study to identify the preferred methods
for managing the impacts associated with combined sewer overflow
(CSO) events and stormwater discharges in the Coatsworth Cut Sewershed.
The need for this study was identified previously in the City's Wet Weather Flow Management Master Plan - a long-term plan to provide
stormwater management.
The study is
being planned under Schedule 'C' of the Municipal Class Environmental
Assessment (June 2000).
Map
of study area
Background
Stormwater is runoff from rain or melting snow. This runoff
soaks into the earth or runs off hard surfaces, such as driveways
and roads, and flows into road-side grates into a network of underground
sewer pipes. In some parts of the city where combined sewers exist,
there is only one sewer carrying a combination of both sanitary
sewage and storm drainage for each stretch of road. During significant
wet weather flow events, the volume of combined sewage may exceed
capacity of the sewer and some of the combined sewage may overflow
untreated into the lake.
The purpose
of this study is to examine a variety of measures to help reduce
or control stormwater and combined sewer discharges. These include:
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Source controls
to slow and reduce the volume of stormwater before it gets to
the sewer, such as the use of permeable surfaces, downspout
disconnection and rain barrels;
-
Conveyance
controls to store, slow and infiltrate the flow of stormwater
during wet weather events; and
-
End-of-pipe
controls to store and/or treat combined sewer overflows and
stormwater run-off during a wet weather event prior to discharge
to the receiving water.
When used together,
these methods can help reduce or control combined sewer overflows
and stormwater discharges and improve water quality in Lake Ontario.
Open House
In December 2006, the City of Toronto's consultant recommended a three-component preferred solution for improving and protecting water quality in Coatsworth Cut.
The recommendation, which includes source controls, conveyance controls (weir adjustments, underground tank and swere storage) and an end-of-pipe solution (an engineered wetland) has been accepted by the City.
The next step in this environmental assessment was to present the recommended design concept for the preferred solution. At our open house on Saturday June 23, 2007 (map), the alternative design concepts considered were presented in an outdoor tent on the Lakeshore.
Thank you for visiting our Open House. Your comments are appreciated.
Ads (PDF) were placed in local community newspapers.
How to get more information
The first Public Information Centre to learn more about this study took place on Monday November 28 at the S.H. Armstrong Community Recreation Centre. Those attending had an opportunity to view displays 1 and displays 2 (PDF) and speak one-on-one with project staff. A second community meeting was held in September 2006 to consult with residents on the next steps for this area. A third community meeting was held in December 2006 to present the preferred solution. A fourth community meeting was held in June 2007 to present the preferred design.
Please view the panels presented:
For more information on Coatsworth Cut, see the Environmental Assessment Study Bulletin:
If you have any questions, or would like to be placed on the mailing list for this study, please contact:
Tracy Manolakakis
Policy and Program Advisory
Toronto Water
55 John Street, 18th Floor
Toronto, On M5V 3C6
Tel: 416-392-8834
Fax:416-392-2974
Email: tmanola@toronto.ca
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