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April 27, 2015

Seattle eyes $600M CSO, runoff projects

By JOURNAL STAFF

SEATTLE — This week, Seattle City Council will start considering a $600 million, 15-year plan from Seattle Public Utilities to keep untreated wastewater and polluted runoff from going into creeks, lakes, rivers and Puget Sound.

The biggest project would be a 2.7-mile, $374 million combined sewer overflow storage system on the north side of the Ship Canal between Ballard and Wallingford. It would be jointly funded by Seattle and King County, and prevent annual overflows of about 50 million gallons.

Construction is scheduled to start in 2018.

Other projects include treating runoff from 254 acres in South Park before it empties into the Duwamish River; building natural drainage systems in Longfellow, Piper's and Thornton creek watersheds; and expanding street cleaning to reduce clogged storm drains and keep about 40 tons of pollutants out of waterways each year.




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