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I.I it <br /> PROBLEM ASSESSMENT REPORT <br /> Moreland Court Shed <br /> 7700 Moreland Court, Stockton, California <br /> Delta Project No 40-88-146 <br /> Page 6 <br /> A summary of the chemical analyses from the former tank excavation is presented to Table 3 Soil sample <br /> identification and locations are shown in Figure 3,and laboratory data sheets are presented in Appendix B <br /> Concentrations of TPH were less than the laboratory analytical method detection limit of 10 0 ppm in all <br /> the soil samples submitted,with the exception of TS-2 which had a TPH value of 1,030 ppm Concentrations <br /> of BTEX in soil samples TS-2 were <0025,637,4 76,and 214 ppm, respectively Concentrations of BTEX <br /> in TS-1 and TS-3 through TS-7 were less than the detection limit of 0001 ppm. <br /> I <br /> TABLE 3 <br /> Chemical Analysis of Soil Samples From <br /> Bottom of Former Tank Excavation (ppm) <br /> Sample <br /> Sample Date Depth Ethyl- Organic <br /> Identification Collected LE;S11 Benzene Toluene benzene Xylenes TPH EDB Lead <br /> TS-1 12/27/88 15 <0 001 <0 001 <0 001 <0 001 <10 0 <0001 <0 05 <br /> TS-2 12/27/88 15 <0025 637 476 214 1,030a <0 025 014 <br /> TS-3 1227/88 15 <0001 <0 001 <0 001 <0 001 <10 0 NAb NA <br /> TS-4 1227/88 15 <0001 <0 001 <0 001 <0 001 <100 NA NA <br /> TS-5 1227/88 15 <0 001 <0 001 <0 001 <0001 <100 NA NA <br /> TS-6 1227/88 15 <0 001 <0 001 <0 001 <0001 <100 NA NA <br /> TS-7 1227/88 15 <0 001 <0 001 <0001 <0001 <10.0 <0001 <005 <br /> 'Identified as gasoline <br /> bNot analyzed <br /> I <br /> I <br /> I <br /> On January 3, 1989, six soil samples were collected from the product line trenches for chemical analysis of <br /> I <br /> BTEX, TPH, EDB, and organic lead. A summary of the chemical analyses from the product line trench <br /> samples is presented in Table 4, and Appendix C presents a copy of the laboratory data sheets. Figure 3 <br /> illustrates the sample identification and locations of the samples collected. <br /> i <br />