Mary Beth Nevulis is the managing editor of Storm Water Solutions. Nevulis can be reached at [email protected]
Jun 24, 2014

Going Full Bore

A 13.2-mile network of tunnels designed to better manage Washington, D.C.'s combined-sewer overflows is beginning to take shape, as the tunnel-boring machine christened "Lady Bird" makes her way to a major pumping station about one mile from the Capitol.

The tunnels are part of the D.C. Water and Sewer Authority's Clean Rivers Project, a long-term Clean Water Act-compliance initiative based on capturing and treating at least 96% of the 3 billion gal of raw and combined sewage that overflows from the older sections of the capital's sewer system every year.

Other components of the projects include three more tunnels and up to $100 million in green infrastructure. As each tunnel is finished, future overflows will be channeled to the Blue Plains Advanced Wastewater Treatment Plant.

Is your municipality or facility involved in projects that are a combination of green and grey infrastructure, like this one? Email us your thoughts at [email protected]