Feds order city to build Gowanus Canal sewage retention tanks
The U.S. Environmental Protection Agency (EPA) ordered the City of New York (city) to construct and operate two Combined Sewer Overflow (CSO) retention tanks to control contaminated solids discharges at the Gowanus Canal Superfund site in Brooklyn, New York, which is a key component of the Gowanus Canal cleanup. The EPA’s order follows previous orders that EPA issued in 2014 and 2016 to require the city to find a location for and design the two tanks. Controls to reduce CSO discharges and prevent other land-based sources of pollution, such as street runoff, from compromising the cleanup are a critical part of the site’s cleanup plan.
“This order will ensure that EPA’s cleanup efforts will not be undermined by uncontrolled combined sewer overflow discharges that have contributed to the chemical contamination of this waterway and impacted this community for the past century and a half,” said EPA Acting Regional Administrator Walter Mugdan. “To ensure the integrity of the dredging work, the retention tanks will control New York City’s sewer outfalls over the long-term.”
The administrative order, issued on March 29, 2021, requires the city to construct one 8-million-gallon tank, located at the head of the canal, and one 4-million-gallon tank, located at a New York City Department of Sanitation Salt Lot near the middle of the canal.