EPA Superfund Program: LOUISIANA-PACIFIC CORP., OROVILLE, CA

Superfund Site Profile

The Louisiana-Pacific Corp. site consists of two pieces of property located a half-mile apart: a 100-acre wood processing plant and a 115-acre landfill. Georgia-Pacific Corporation built the plant in 1969 and operated it until 1973, when the Louisiana-Pacific Corp. assumed plant ownership and operation. In 1978, the California Solid Waste Management Board approved a permit for Louisiana-Pacific Corp. to operate the landfill. In 1973, high levels of pentachlorophenol (PCP) were discovered in nearby residential wells. By 1983, a groundwater contaminant plume containing PCP extended one-and-a-half miles south of the neighboring Koppers Company, Inc. wood-treating plant, another Superfund site. Site-related chemicals caused low levels of contamination in the shallow aquifer beneath the plant. Following cleanup, EPA took the site off the Superfund program’s National Priorities List (NPL) in 1996.

TOPICS IN FOCUS

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SITE STATUS

Construction
Complete?
Yes (10/01/1995)
Human Exposure
Status

Under Control
Contaminated Ground
Water Status
Not a Ground Water Site
Site-Wide Ready for
Anticipated Use?
Yes