Ottawa's next big dig set to start on $230M sewage tunnels - Ottawa - CBC News

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By Kate Porter, CBC News Ottawa, September 12, 2016

Another big dig is set to start under Ottawa's downtown, this time to carve out tunnels with the capacity to store up to 43 million litres of raw sewage and runoff resulting from big storms.

The combined sewage storage tunnel is the centrepiece of the Ottawa River Action Plan approved by city council in 2010, and aimed at preventing sewage from spilling into the waterway.

http://www.cbc.ca/news/canada/ottawa/ottawa-sewage-storage-tunnel-big-dig-1.3755460