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Preliminary Site Assessment Work Plan THE AUTO FACTORY 5942 North Highway 99, Stockton, California 1.0. INTRODUCTION. At the request of Mr. John Lee, Advanced GeoEnvironmental, Inc. (AGE) has prepared this Preliminary Site Assessment Work Plan for the property at 5942 North Highway 99, Stockton, California(the site).The location of the site is illustrated on Figure 1.A:plan of the site is illustrated on Figure 2. This work plan is prepared as directed by the San Joaquin County Public Health Services - Environmental Health Division (PHS-EHD) by letter dated 10 February 2000 to investigate an unauthorized release associated with underground storage tanks(USTs).This work plan is prepared in accordance with PHS-EHD and Central Valley Regional Water Quality Control Board (CVRWQCB) guidelines for the subsurface investigation of UST sites. The purpose of this site assessment is to evaluate the lateral and vertical extent of petroleum hydrocarbon impacted soil and/or groundwater at the site. This work plan provides a description of the scope of work and procedures to be used to advance the soil probe borings, collect and analyze soil and groundwater samples and properly abandon the soil borings. 2.0. BACKGROUND The site is located at 5942 North Highway 99, approximately 200 feet south of the intersection of Hammer Lane and North Highway 99 Frontage Road,in an unincorporated portion of Stockton,San Joaquin County, California (Figure 1). The site is within the northwest quarter of Section 18, Township 2 North,Range 7 East,Mount Diablo Base and Meridian(Lodi South Quadrangle, 7.5- Minute USGS Topographic Series, Photorevised 1976). 2.L SITE DESCRIPTION The property is currently utilized as a used auto sales lot. The site is occupied by a single structure and associated canopy. The site is bordered on the south by Denny Boy's Restaurant, on the north by a fast food restaurant,on the west by Highway 99 and on the east by North Highway 99 Frontage Road. The facility was formerly operated as a Texaco Gasoline Station, with three fuel USTs and two fuel dispenser islands. A domestic drinking water well is located near the northeast corner of the property. This well provides drinking water for both The Auto Factory and the adjacent Denny Boy's Restaurant. The well is located approximately 50 feet northeast of the former UST cluster. Prominent site features, including the former UST cluster and the domestic well, are illustrated in Figure 2. Advanced GeoEnvironmental,Inc.