[6] In January 2006 the New York State Department of Environmental Conservation, backed[clarification needed] by the involved companies, asserted that 9 million US gallons (34,000 m3) of spilled oil had been recovered and cleaned up.
[8] The Environmental Protection Agency's (EPA) "Newtown Creek/Greenpoint Oil Spill Study Brooklyn, New York" states that vapor concentrations in "some commercial establishments" were found "above the Upper Explosive Limit".
"[4] A New York State Department of Environmental Conservation report tested residential blocks above the spill area concluded that there is no evidence of either oil or dangerous vapors seeping into people's homes.
Brooklyn Paper columnist Tom Gilbert wrote, "This stands to reason, as the spilled oil tends to lie deep underground, capped by a nearly impermeable layer of clay.
"[11] On October 20, 2005, local residents within the area of the oil recovery operation, which is located in the predominantly commercial/industrial eastern section of Greenpoint near the East Williamsburg Industrial Park, filed a lawsuit against ExxonMobil, BP and Chevron in Brooklyn State Supreme Court, alleging they have suffered adverse health consequences.