Construction Advisory for Gowanus Canal Combined Sewer Overflow Storage Tanks | City of New York

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Construction Advisory for Gowanus Canal Combined Sewer Overflow Storage Tanks

November 27, 2023

The New York City Department of Environmental Protection (DEP) is progressing on construction of two underground storage tanks that will capture millions of gallons of combined sewage and rainwater that would otherwise overflow into the Gowanus Canal during rainstorms. This $1.6 billion investment complements the US Environmental Protection Agency’s on-going Superfund dredging project and will significantly improve the health of the canal. The project will also create 3.6 acres of new public waterfront open space and amenities for the Gowanus community.

DEP broke ground on the project in March. In September, crews began construction of an underground concrete wall that will support the removal of soil necessary to build the first tank. The construction site is located along the eastern side of the Canal, bounded by Butler Street, Nevins Street and Degraw Street. In order to meet project deadlines mandated by the Federal Superfund Program, beginning December 4th, work will take place Monday through Friday, 24 hours a day, Saturday 12AM to 11PM and Sunday from 6AM to 6PM for approximately 7 months. Weekend work will be primarily equipment maintenance.

To reduce impacts to the surrounding neighborhood, crews have installed sound barriers to the north, south and east perimeter of the construction site to dampen noise and will spray water and foam on soil removed from the ground to reduce dust and odor. DEP performs regular perimeter checks for errant odors and also operates a 24/7 community air monitoring program (CAMP) with real-time alerts for any exceedances.

Residents or businesses with any questions or concerns should contact the Community Construction Liaison, Valentina Mascaro, at GowanusCCL@johnson-asberry.com or at 934-216-0209. More information on the Gowanus Canal and the Superfund Cleanup can be found here.