NEW YORK TRC Companies
Inc. has signed a consent order agreeing to take measures aimed
at preventing the release of cyanide into soil and groundwater
at a former Kaiser Aluminum Corp. facility in Ravenswood,
The order relates to a
50,000-cubic-yard pile of aluminum smelter potliner waste
covering 2.7 acres within the site, according to the federal
Environmental Protection Agency.
"Aluminum smelting waste,
contained in the spent potliner pile, accumulated between 1972
and 1980, and was awaiting shipment for mineral recycling. The
recycling of this type of waste material subsided in the late
70s, thus necessitating the need to cover it," the EPA
said. "The entire waste pile was covered with a polymeric liner
in 1981 to prevent contact with stormwater, which could leach
cyanide compounds in the waste pile into the groundwater.
"TRC has agreed to repair and
maintain the rubber membrane liner to prevent the escape of
cyanide from the site," the agency said.
Lowell, Mass.-based TRC took
ownership of the pile in 2004 after Kaiser divested itself of
the site as part of bankruptcy proceedings.
The site is completely
surrounded by Century Aluminum Co.s smelting facility in