Rising Costs and Delays in Seattle Area Wastewater Plant and Tunnels

Hatch Mott MacDonald received the prestigious ACEC Grand Award at the 2015 Engineering Excellence Awards Gala on April 21. ACEC had this project description in their program: More than six miles long and 43 feet […]

In Washington D.C., the D.C. Water and Sewer Authority (D.C. WASA) finalized a lont-term plan in 2002 aimed at reducing combined sewer outfalls into the Potomac River and its tributary, the Anacostia River. A major portion of this plan is a $2.2 Billion (US) deep tunnel program to handle excess stormwater flows and prevent the combined sewage from being discharged into the environment. Read on for a map and more info. (Photo of Anacostia River, by D.C. WASA)

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When I arrived in Seattle for the ER2010 conference, I was thinking about the kinds of stories I post on the site. I think I probably post more about Seattle area projects than any other […]