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U.S. EPA: TREATMENT PLANT AT KOPPERS SUPERFUND SITE DEDICATED

 SAN FRANCISCO, April 13 /PRNewswire/ -- The U.S. Environmental Protection Agency (U.S. EPA), Beazer East Inc. and Cal-EPA today held a ribbon-cutting ceremony to inaugurate the opening of the groundwater treatment plant at the Koppers Superfund site, Oroville, Calif. The plant was built by Beazer East Inc., the former owners, under a settlement that was reached with U.S. EPA in February 1992 to clean up soil and groundwater contamination at the wood-treating facility.
 "U.S. EPA is pleased to participate in the opening of this plant," said Jeff Zelikson, U.S. EPA's regional hazardous waste management division director. "This plant is part of the overall cleanup action being taken to ensure that the environmental damage at this Superfund site is corrected."
 As part of today's ceremony, U.S. EPA and Beazer hosted an open house to allow the public and media to tour the facilities and learn more about the operation of the system.
 The treatment plant is one of two facilities that are planned to clean up contaminated groundwater that extends approximately two miles south of the Koppers property. The plant is located on a two-acre site at the southeast corner of LoneTree and Prince Roads. The treatment system will include extraction, carbon treatment and reinjection to remove pentachlorophenol, a wood-treating chemical, and other contaminants from the water.
 Water from extraction wells will be pumped to the treatment plant, where activated carbon filters will remove pentachlorophenol and other contaminants. The treated water will either be discharged to Wyman Ravine or returned to the groundwater.
 Beazer will design and build a similar treatment system that will be located on site at the Koppers wood-treating plant. The second plant will be designed to contain any further migration of contaminants from the Koppers property, while the groundwater is being cleaned up.
 The company will also design and construct soil treatment systems including biodegradation, soil washing, and chemical fixation to treat the contaminated soil. A concrete drip pad and cap has been installed in the wood-treating area to prevent further soil and groundwater contamination.
 The Koppers site is located just south of Oroville near State Route 70. Wood treating operations, designed to prevent wood deterioration by insects or fungi, have been used at the site since 1948 when the National Wood Treating Co. first began operating. Koppers Industries Inc. is the current owner and operator of the Oroville property and wood treatment facility. The former owner was Koppers Co. Inc., which was acquired by Beazer East Inc. in 1988.
 Chemical handling procedures, wood treatment and storage operations resulted in soil and groundwater contamination. The groundwater, surface water and soils have been contaminated with pentachlorophenol (PCP) dioxins and furans, polynuclear aromatic hydrocarbons, chromium and arsenic.
 In 1984, the Koppers site was added to the National Priorities List (NPL). The NPL is the list of uncontrolled hazardous waste sites nationwide which pose the greatest threat to human health and the environment. Sites on the NPL qualify for federal long-term cleanup efforts.
 -0- 4/13/93
 /CONTACT: Dave Schmidt of the U.S. EPA, 415-744-1578/


CO: U.S. Environmental Protection Agency; Beazer East Inc. ST: California IN: ENV SU: EXE

SG -- SF001 -- 5349 04/13/93 16:00 EDT
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Date:Apr 13, 1993
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