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Environmental Site Assessment Report 1 The Southland Corporation,Southwest Corner of Grant Line Road and Joe Pombo Parkway,Tracy,California August 28,1997 1.0 INTRODUCTION This report is submitted by Fluor Daniel GTI, Inc. (Fluor Daniel GTI) for The Southland Corporation (Southland)to summarize the results of a soil and groundwater assessment conducted at the property known as assessor's parcel number 238-190-01 located at the southwest corner of Grant Line Road and Joe Pombo Parkway intersection in Tracy,California (Figures 1 and 2). An Assessor's Map of the site is included as Appendix A. The scope of work included drilling four soil borings,sampling soil and groundwater from the four borings, and preparation of this report. The work scope was designed to fulfill the requirements of the San Joaquin County Public Health Services(SJCPHS). The purpose of the work was to verify that the subject site has not been impacted by petroleum hydrocarbons, metals, or pesticides. The site assessment work was conducted in accordance with the scope of work outlined in Fluor Daniel GTI's Work Plan for Environmental Site Assessment, dated July 18, 1997, and accepted by the SJCPHS. 2.0 ASSESSMENT WORK 2.1 Permitting/Site-Specific Health and Safety Plan Fluor Daniel GTI conducted a technical review of all relevant information provided prior to proceeding with site assessment work. Following a complete review of site conditions, Fluor Daniel GTI prepared a site-specific Health and Safety Plan as required by the Occupational Safety and Health Administration (OSHA) Standard "Hazardous Waste Operations and Emergency Response"guidelines(29 CFR 1910.120). The document was reviewed and signed by all Fluor Daniel GTI personnel and subcontractors prior to commencement of work at the site. A permit for advancing the borings was obtained from the SJCPHS (Appendix B). 2.2 Soil Sample Collection On August 5, 1997, Fluor Daniel GTI personnel supervised the advancement of four on-site geoprobe borings(GP-1 through GP-4)to depths of approximately 18-20 feet below ground surface (BGS). Using a truck-mounted geoprobe rig, continuous soil cores were collected at the four locations using direct push technology(Figure 2). Each soil sample was collected in a 4-foot-long by 2.5-inch-diameter stainless-steel cylindrical core barrel lined with plastic tubing. The drive rods and tools were washed with Alconox (detergent) and triple rinsed with distilled water between boreholes, and all sampling equipment was cleaned between each sampling interval to reduce the potential for cross-contamination. Four samples, collected at approximately 5, 10, 15, and 20 feet BGS from each boring,were retained for laboratory analysis. Each sample was capped, sealed with tape, labeled and placed on ice in an insulated container for transport under chain-of-custody manifest to Western Environmental Science &Technology(WEST) in Davis, California for analysis of benzene,toluene, ethylbenzene and total xylenes(BTEX), methyl-tert-butyl- ether(MTBE), and total petroleum hydrocarbons-as-gasoline (TPH-G) using Environmental Protection Agency(EPA) methods 8020/modified 8015. In addition,the sample collected at 5 to 6 feet-BGS in each 0rA4ear.rpgSth1-) FLUOR DANIEL GTI