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' 5 ' 4.0 SOIL SAMPLING BENEATH FRESH OIL PIPING ' 4.1 Soil Sample Collection OnNovember 3,2003,FREY collected soil samples P6 through P9 in the locations shown on Figure ' 2. Soil samples P6 through P9 were collected from beneath a removed lube oil pipe which ran from inside the service bays to the lube oil UST. Soil sample locations and depths were specified by Dena Abanta of the San Joaquin Department of Environmental Health on November 3, 2003. ' FREY manually excavated to depths of approximately 2 feet below the lube oil piping. FREY attempted to hand auger in the locations specified. However, attempts to collect soil samples with ' a drive sampler were met with refusal after advancing the sampler approximately 3 inches. FREY filled the remainder of each 6-inch tube with soil manually excavated from the sample area. ' Each sample was labeled with the project number, sample number, depth, time and date of sample collection. After sample collection, the brass tubes were capped with teflon tape and an air tight plastic cap,placed in plastic bags, and stored in an ice chest cooled with ice. The soil samples and the associated chain of custody were transported to the laboratory at the conclusion of soil sampling activities. Soils samples P6 and P7 consisted of a dark brown to black,moist,clay from just below the concrete surface to the depth of each sample location at approximately 4 feet bgs. Soil samples P8 and P9 consisted of brown silt from just below the concrete to the depth of each sample location at approximately 4 feet bgs. Groundwater was not encountered during this investigation. 4.2 Laboratory Analyses Soil samples P6 through P9 were analyzed for TPH-d in general accordance with EPA Method ' 8015M. In addition, the soil samples P6 through P9 were also analyzed for BTEX and fuel oxygenates in general accordance with EPA Method 8260B. I4.3 Soil Sample Results TPH-d, BTEX and fuel oxygenates were not detected above the laboratory detection limits in soil samples P6,P7,P8 and P9. Soil sample laboratory analytical results have been summarized in Table 1. Soil samples were analyzed by Baseline On-Site Analysis, a State-certified hazardous waste testing laboratory based in Huntington Beach,California. The laboratory and quality control reports, ' along with chain-of-custody documentation are provided in Appendix A. FREY