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. Office of Environmental Health Hazard Assessment <br /> Joan E.Denton,Ph.D.,Director <br /> Headquarters• 10011 Street•Sacramento,California 95814 <br /> Mailing Address: P.O.Box 4010•Sacramento,California 958124010 <br /> } Oaldand Office•Mailing Address: 1515 Clay Street,16°"Floor•Oakland,California 94612 v,o <br /> MEMORANDUM <br /> Gray Davis <br /> Winston H.Hickox Governor <br /> Agency Secretary <br /> TO: Joseph Mello, Jr. <br /> Site Cleanup Unit <br /> Regional Water Quality Control Board, Central Valley Region <br /> 3443 Rouiter Road, Suite A <br /> Sacramento, CA 95827-3003 J <br /> i <br /> VIA: Jim Carlisle, DVM, Chief <br /> Applied Risk Assessment Unit o <br /> � en <br /> FROM: Russhawn N. Jackson,Ph. <br /> Associate Toxicologist r� c <br /> Hazardous Waste Toxicology Section <br /> o c'm <br /> DATE: February 2, 2001 <br /> w r� <br /> w <br /> SUBJECT: REVIEW OF REVISED DRAFT HEALTH RISK ASSESSMENT, LINCOLN <br /> CENTER, STOCKTON, SAN JAQUIN COUNTY <br /> At your request, the Office of Environmental Health Hazard Assessment has reviewed <br /> the August 2000 Revised Draft Risk Assessment prepared by Levine-Fricke for the Lincoln <br /> Center in Stockton, California. <br /> Site Background <br /> The Lincoln Center is an active shopping center located in Stockton. The approximately <br /> 30-acre site is bounded on the north by Lincoln Elementary School, on the east by Pacific <br /> Avenue, on the west by Gettysburg Avenue, and on the south by Douglas Avenue. Several dry <br /> cleaning businesses have operated at the Lincoln Center since the 1950's. ]111984, <br /> perchloroethylene (PCE) and trichloroethylene (TCE) were identified in the former Lincoln <br /> Village Maintenance District (LVMD)municipal supply well, LVMD#1, located on the <br /> western edge of the Lincoln Center. Analytical data obtained since 1984 have indicated the <br /> presence of PCE,TCE, 1,2-dichloroethylene (1,2-DCE), vinyl chloride and petroleum <br /> hydrocarbons such as benzene, toluene,xylene and ethylbenzene in soil, soil vapor and/or <br /> groundwater. Environmental investigations concluded that chemical contamination of soil and <br /> groundwater was caused by the migration of dry cleaning fluids into municipal supply wells <br /> from the sanitary sewer line that serviced each of three dry cleaning facilities at the Lincoln <br /> Center. Routine disposal of dry cleaning fluids into the sanitary sewer line connected to the <br /> California Environmental Protection Agency <br /> ow <br /> '0 Printed on Recycled Paper <br />