Open Houses and Information Sessions

The City of Ottawa will host a Information Session on the Combined Sewage Storage Tunnel (CSST), one of the most important projects of the Ottawa River Action Plan aimed at improving the health of the river.

Tuesday, December 4, 2018
Routhier Community Centre (Gymnasium)
172 Guigues Ave, Ottawa, ON
5pm – 7:30pm (drop-in format)

CONSTRUCTION IN YOUR NEIGHBOURHOOD (Lowertown)

What: The North-South Tunnel is complete, and work on the East-West Tunnel is now underway.

• Construction of a 4-kilometre-long, 3-metre-diameter pipe, between 10 and 31 metres below surface level. (There are no related surface works in Lowertown.)
• A tunnel boring machine (TBM) is being used: Its rotating face chips away rock as the machine moves forward, and precast concrete liners are grouted in place behind the machine to permanently seal the pipe.
• People in Lowertown along the tunnel alignment are expected to hear and feel tunneling noise and vibration during the three-four days/nights that the TBM approaches and passes. This will be most noticeable in buildings’ basements. We apologize for this temporary disruption.
• The contractor is required to monitor vibration along the entire alignment and adhere to strict thresholds.

When:

• Tunneling west from King Edward Avenue to Cumberland Street is anticipated to occur in December 2018, followed by tunneling south under Cumberland from approximately Cathcart to Wilbrod (January-February 2019) and onward west toward LeBreton Flats.
• Tunneling will continue 24 hours a day.
• East-west tunneling is expected to be complete in the fall of 2019.

Lowertown - Information Session Display Boards

What to expect:

At the Public Information Session, you will be provided with information on the CSST project, the tunneling method, and what to expect during east-west tunneling. Project team members will be available to answer your questions.

Coming soon: Open House Display Boards

For further information about the CSST project and this public information session, please:

• Visit the CSST website at ottawa.ca/CSST
• Email the CSST team at CSST@ottawa.ca (link sends e-mail)
• Call the CSST team at (613) 580-2424 ext. 2CSST (22778)
• Sign up for the CSST e-newsletter at Ottawa.ca/esubscriptions

 

The City of Ottawa hosted an Information Session on the Combined Sewage Storage Tunnel (CSST), one of the most important projects of the Ottawa River Action Plan aimed at improving the health of the river.

Thursday, May 24, 2018
Tabaret Hall - Huguette Labelle Hall (University of Ottawa)
550 Cumberland Street, Ottawa
Drop in 5 p.m. to 8 p.m.

CONSTRUCTION IN YOUR NEIGHBOURHOOD

What:  Construction of an underground access shaft for future inspection of the CSST tunnel is planned for Cumberland Street, north of Wilbrod Street – referred to as Site 3CR. This will necessitate the closure of Cumberland (Wilbrod to Stewart) to vehicles for approximately one year (pedestrian and cyclist passage will be maintained).

When:  Construction is anticipated to begin in the fall of 2018 and continue for approximately 12 months.

WHAT TO EXPECT

At the Public Information Session, residents were provided with background information on the CSST project, as well as details on specific construction activities and impacts for Site 3CR on Cumberland at Wilbrod. As a “drop-in” format, there was not a formal presentation. Residents had the opportunity to:

• Receive background information on the CSST Project
• Consider the anticipated construction activities set to occur in your neighborhood
• Learn about parking and traffic modification strategies
• Provide feedback on the project and the reinstatement of the site

Project team members were made available to discuss the project and answer your questions.

Open House Display Boards [ PDF 2.384 MB ]

For further information about the CSST project and this public information session, please:

• visit the CSST website at ottawa.ca/CSST
• email the CSST team at CSST@ottawa.ca
• call the CSST team at (613) 580-2424 ext. 2CSST (22778)
• sign up for the CSST e-newsletter at Ottawa.ca/esubscriptions

Wednesday, May 24, 2017
McNabb Community Centre
180 Percy St, Ottawa, ON K1R 6E5
Drop in 5 p.m. to 8 p.m.

The City of Ottawa hosted an Information Session on the Combined Sewage Storage Tunnel (CSST), one of the most important projects of the Ottawa River Action Plan aimed at improving the health of the river.

At this session, you will have the opportunity to:

• Review background information on the CSST Project
• Review construction activities in your neighborhood
• Review parking and traffic modification strategies
• Learn about the expected noise levels during construction
• Provide feedback on the project and aspects for consideration.

Open House Display Boards

• Combined Sewage Storage Tunnel (CSST) – Overview [ PDF 781 KB ]
• CSST North-South Tunnel (NST) Key Milestones [ PDF 210 KB ]
• Planning and Design [ PDF 184 KB ]
• Map of CSST [ PDF 12.643 MB ]
• Site 8: McLeod Street & Kent Street What’s Happening [ PDF 5.122 MB ]
• Site 9: Kent Street & Catherine Street Odour Control Facility [ PDF 2.231 MB ]
• Site 9: Kent Street & Catherine Street What’s Happening [ PDF 1.792 MB ]
• Stay in touch [ PDF 173 KB ]

What:      

• Construction of a connection between the CSST North South Tunnel under Kent Street and the brand new McLeod Street combined sewer at Site 8.  Implementation of an odor control facility located on Catherine Street at Site 9.

When:

• Tunnel launch shaft construction is underway at Site 10.  Tunneling along Kent Street is expected to begin in the summer of 2017 and continue for the remainder of the year.  Construction of the shafts at Site 8 and odor control facility at Site 9 is expected to start in the spring of 2018, and continue for approximately 12 months. 

The CSST will include the construction of two tunnels: an east-west tunnel (EWT) through the downtown core from Stanley Park to Le Breton Flats, and a north-south tunnel (NST) under Kent Street from Chamberlain Ave to the Supreme Court.

To complete this project, there will be several surface construction sites and underground tunneling operations within the downtown core.

Representatives from the City and the project team are available to provide the information and answer your questions (see contact information below). 

Many of the benefits of the CSST Project include:  

• Greatly reducing the frequency of sewage overflows during storms from entering the Ottawa River
• Helping to protect the Ottawa River and reducing overflows from entering the river
• Reducing the risk of basement flooding for several low-lying lands in the Glebe/O’Connor area; and,
• Increasing operational flexibility and redundancy to major collector sewers

The environmental assessment for the CSST Project was completed in January 2013.

Overall CSST construction will continue at various sites throughout the City until the end of 2019, with the CSST becoming operational mid-2020.

For any additional information, please:

Email the project team at CSST@ottawa.ca

Sign up for our e-newsletter at Ottawa.ca/esubscriptions

Trucking Routes for Site 5 / Stanley Park [ PDF 3.041 MB ]

Site 5 Projected Construction Sequencing Summary [ PDF 252 KB ]

Wednesday February 22nd, 2017
St. Bartholomew’s Anglican Church
125 MacKay Street
Drop-in between 5:30 and 7:30 p.m.

At the Open House, residents had the opportunity to:

• Provide input into the selection of truck routes through New Edinburgh
• Review background information on the CSST Project
• Learn about the expected noise levels during construction
• Review construction activities in Stanley Park

Representatives from the City and the consultant team were made available to provide the information and answer questions.

Why: 

• The Public Open House provided residents with the opportunity to review truck route options and ask questions in advance of CSST construction, anticipated to begin in New Edinburgh in March 2017.

Where: 

• There are two construction sites in New Edinburgh: one at Queen Victoria/River Lane, and the main site in Stanley Park (which contains multiple locations within a single fenced area). Trucks will be servicing both sites during construction, with the exact routes to be determined in consultation with the community.

What: 

• Access shafts are being constructed in Stanley Park, to connect to existing infrastructure and to launch the tunneling operation for the East-West Tunnel, and at River Lane/Queen Victoria to connect to the Rideau River Collector.

When: 

• Construction began in Stanley Park in March 2017, and continues for 30 months. Construction also began in March 2017 at the River Lane/Queen Victoria location, and continues for 12 months at this location. Overall CSST construction will continue at various sites throughout the City until the end of 2019, with the CSST becoming operational mid-2020.

For any additional information, please:

• Email the project team at CSST@ottawa.ca
• Sign up for our e-newsletter at Ottawa.ca/esubscriptions

Monday, June 27, 2016
4:30 to 6:30 pm
St. Giles Presbyterian Church
174 First Avenue, Ottawa, ON

The City of Ottawa invites you to a Public Information Session on the Combined Sewage Storage Tunnel (CSST) project, one of the most important projects of the Ottawa River Action Plan to improve the health of the river. The CSST project will include the construction of two tunnels: an east-west tunnel (EWT) through the downtown core from LeBreton Flats to New Edinburgh Park, and a north-south tunnel (NST) along Kent Street from Catherine Street to existing infrastructure, just behind the Supreme Court.

At the Public Information Session, you will be provided with background information on the CSST project, as well as details on specific construction activities and impacts for Site 10 at Kent Street and Chamberlain Avenue. Representatives from the City and the consultant team will be available to discuss the project and answer your questions.

Why: The CSST will greatly reduce the frequency of sewage overflows during storms from entering the Ottawa River, and will help protect the river.

Where: To complete this project, there will be several surface construction sites and continuous underground tunneling operations throughout the downtown. A key surface construction site for the CSST will be located at the intersection of Kent Street and Chamberlain Avenue, on land formerly used for the Kent Street Rapid Bridge Replacement. The Contractor may also use the former school board site along Chamberlain between Bronson and Percy.

What: An access shaft will be constructed at this location to launch the tunneling operation for the North-South Tunnel. When complete, a permanent access point to the underground tunnel will remain at this site.

When: Construction will begin as soon as July 2016 at Kent Street and Chamberlain Avenue and is expected to last until fall 2018 at this location. Overall CSST construction will continue at various sites throughout the City until the end of 2019, with the CSST becoming operational mid-2020.

For further information about the information session or the project overall, please:

• Email the project team CSST@ottawa.ca
• Sign up for our e-newsletter.

Accessible formats and communication supports are available upon request.