US EPA

1379677 

Technical Report 

Superfund Record of Decision (EPA Region 9): Valley Wood Preserving Site, Turlock, CA. (First Remedial Action), September 1991 

1991 

NTIS/02989568 

GRA and I 

GRA and I 

The 14.4-acre Valley Wood Preserving (VWP) site is a former wood preserving facility in Turlock, Stanilaus County, California. From 1973 to 1979, VWP used a solution of chromated-copper arsenate (CCA) to preserve lumber onsite. Wood preserving chemicals were mixed and stored onsite in three above-ground storage tanks. After treatment, the wood was allowed to drip dry on paved and unpaved areas. Chemical spills, leaking tanks, improper onsite disposal practices, and chemical drippings from the treated lumber are known sources of contamination. In 1989, EPA investigations identified low levels of chromium contamination in several domestic wells, and required VWP to install an interim ground water extraction and electrochemical treatment system to help contain the migration of contamination. EPA also required VWP to design a plan for the development of an alternative water supply for any affected residences. VWP also installed three deep ground water wells to serve as domestic water supplies. The Record of Decision (ROD) provides a final remedy for contaminated soil and ground water. The primary contaminants of concern affecting the soil and ground water are metals including arsenic and chromium. The selected remedial action for the site is included. 

Superfund; *Remedial Action; *Waste disposal; *Hazardous materials; *Pollution control; California; Wood preservatives; Soil contamination; Ground water; Water pollution control; Land pollution control; Metals; Record of Decision; First Remedial Action - Final; EPA region 9; Cleanup; Stanilaus County(California)