Ballard Siphon replacement project

Library

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• News releases
• Project updates
• Project drawings
• Environmental documents

News releases

• Jan. 25, 2012 -- Infrastructure investments top 2012 priority list for clean-water utility
• Feb. 23, 2011 -- Clean-water investments bolster economic growth, support regional environmental goals; Sewer improvement projects top King County priority list in 2011
• Jan. 18, 2011 -- County Council secures funding for Ballard Siphon upgrade; Construction slated to begin this year

Project updates

• North and South site construction updates, February 9, 2012
• Construction Photos at the North Site -- Install shoring for tunnel boring machine retrieval shaft, January 30, 2012
• North and South site construction updates, January 24, 2012
• South site: Parking along 24th Avenue West project border closed from November 29 through project completion; Northern right of way and westbound traffic lane of West Commodore Way closed temporarily during the week of November 28. November 22, 2011
• North site: Preparation work for shoring installation begins the week of November 14. South site: Site preparation continues, parking to close along 24th Avenue West border. November 9, 2011
• North site: Building demolition during the week of September 26; South site: Preliminary excavation begins early October, September 22, 2011
• Ballard Siphon construction begins Summer 2011, August 2011
• Project Update, Winter 2007

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Project drawings

• Project Map
• Conceptual design drawing 

Environmental documents

• DNS and Environmental Checklist, issued March 18, 2008
• Addendum, issued June 9, 2008

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