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' PROKEM ASSESSMENT REPORT Moreland Court Shell 7700 Moreland Court, Stockton, California ' Delta Project No 40-88-146 Page 6 ' A summary of the chemical analyses from the former tank excavation is presented in Table 3 Soil sample identification and locations are shown in Figure 3,and laboratory data sheets are presented in Appendix B Concentrations of TPH were less than the laboratory analytical method detection limit of 10 0 ppm in all the soil samples submitted,with the exception of TS-2 which had a TPH value of 1,030 ppm Concentrations ' of BTEX in soil samples TS-2 were <0025,637,4 76,and 214 ppm, respectively Concentrations of BTEX in TS-1 and TS-3 through TS-7 were less than the detection limit of 0 001 ppm ' TABLE 3 Chemical Analysis of Soil Samples From Bottom of Former Tank Excavation (ppm) Sample Sample Date Depth Ethyl- Organic Identification Collected ffee t I Benzene Toluene benzene Xylenes, TPH EDB Lead TS-1 1227/88 15 <0 001 <0 001 <0 001 <0001 <10 0 <0 001 <0 05 TS-2 12/27/88 15 <0 025 637 476 214 1,030a <0 025 014 TS-3 12/27/88 15 <0 001 <0001 <0001 <0 001 <10 0 NA' NA TS-4 12/27/88 15 <0 001 <0 001 <0 001 <0001 <10 0 NA NA TS-5 1227/88 15 <0 001 <0001 <0001 <0 001 <10 0 NA NA TS-6 12/27/88 15 <0 001 <0 001 <0 001 <0 001 <10 0 NA NA TS-7 12/27/88 15 <0001 <0 001 <0001 <0 001 <10 0 <0001 <005 'Identified as gasoline ' bNot analyzed ' On January 3, 1989, six soil samples were collected from the product line trenches for chemical analysts of BTEX, TPH, EDB, and organic lead A summary of the chemical analyses from the product line trench samples is presented in Table 4, and Appendix C presents a copy of the laboratory data sheets Figure 3 illustrates the sample identification and locations of the samples collected