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laboratory. Copies of the Analysis Request and Chain of Custody records for these samples <br />are included in this UST removal report as Appendix C. <br />2.3 Sample Analysis <br />The methods utilized in the analysis of the soil samples were modified EPA Method 8015 <br />with a diesel standard and Method 8020 used for BTEX distinction. A state -certified mobile <br />laboratory operated by Quanterra Environmental Services, from Martinez, California, was <br />utilized on site for the analysis of the soil samples collected from the tank excavation, <br />beneath the piping and one of the stockpile samples. The second soil stockpile sample was <br />submitted to McCampbell Analytical in Martinez, California, for analysis. This sample (SP - <br />2) was analyzed for reactivity, corrosivity, and ignitability (RCI), in addition to the above <br />analyses to facilitate proper disposal. <br />Analysis of the soil samples collected from the tank excavation floor and beneath the <br />associated piping, revealed no detectable concentrations of petroleum hydrocarbons. <br />Analysis of the initial soil sample collected from the tank overburden stockpile (SP -1) <br />revealed no detectable petroleum hydrocarbon concentrations. Analysis of the second soil <br />sample collected from the tank overburden stockpile (SP -2) revealed a detectable diesel fuel <br />concentration near the method detection limit. All soil sample analytical results are listed in <br />Table 1 with Laboratory Reports included in Appendix D. <br />2.4 Excavation Backfill <br />After soil sample analyses were complete, the analytical data was submitted to San Joaquin <br />County Inspector Robert McClelion for review. Approval to install a new tank in the existing <br />excavation was received on January 23, 1995. Following tank installation, new imported fill <br />materials were then introduced to the hole in the quantities necessary to restore level grade <br />after compaction. Resurfacing was then completed at the site. <br />2.5 Soil Disposal <br />During tank removal efforts, an overburden soil stockpile was generated. The pile consisted <br />of approximately 97 tons of tank overburden fill material, generated January 18, and 19, <br />1995. Based on analytical results, the soil was accepted for disposal at the BFI Sanitary <br />Landfill in Livermore, California. The soil was transported by Caballero Trucking to BFI <br />Mz/02-17-96/UST/95-0033.nbr 3 <br />0 <br />