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' May 1, 1998 <br /> Page 4 <br /> EPA Method 8020 In addition, total lead analysis was performed for <br /> disposal profiling <br /> • The gasoline UST soil samples were analyzed for total purgeable <br />' petroleum hydrocarbons calculated as gasoline (TPPH-g) by EPA <br /> Method 8015 (modified), BTEX compounds, MtBE, oxygenate <br />' compounds by EPA Method 8260, and total lead The specified <br /> oxygenate compounds included MtBE, ethanol, t-butanol (TBA), <br /> dllsopropyl ether (DT-PE), ethyl tert-butyl ether(EtBE), and tert-amyl <br />' methyl ether (TAME) <br /> • The 20-foot UST soil samples were analyzed for TPPH-g, BTEX <br />' compounds, MtBE, and oxygenate compounds Sample SW-20 was <br /> also analyzed for TEPH-d <br /> • Samples collected from the product dispensers and piping areas-were <br />' analyzed for TPPH-g, BTEX compounds, and MtBE If MtBE was <br /> detected by EPA Method 8020, then analysis of oxygenate compounds <br />' by EPA Method 8260 was performed In addition to the above <br /> mentioned laboratory tests, soil samples collected at PD-4 and <br /> PD4@12' were analyzed for total lead for disposal profiling, and <br /> samples collected at DPD, PP-1 through PP-3, and PP-6 were also <br /> analyzed for TEPH-d <br />' Stockpile samples were analyzed for TPPH-g, BTEX compounds, <br /> TEPH-d, MtBE, and total lead In addition, stockpile samples <br /> collected on February 4, 1998 were analyzed for oxygenate <br /> compounds by EPA Method 8260, because they were being consid- <br /> ered for reuse <br />' Analytical data are presented In Tables 1 through 3 and are discussed below The <br /> certified analytical reports and chain-of-custody documentation are presented as <br /> Attachment A. <br /> IUST area soil analytical data confirmed the presence of petroleum hydrocarbons in all <br /> samples except for DT-2 Of these samples, GT3-A contained the maximum concentra- <br /> tions of oxygenate compounds MtBE and t-butanol Soli samples collected at 20 feet <br /> showed non-detectable concentrations of petroleum hydrocarbons, with the exception of <br />' MtBE MtBE was detected in all 20-foot samples, ranging from 14 to 3 5 nulligrams <br /> per kilogram (mg/kg) Sample NE-20 also contained t-butanol at 12 ppm Soil sample <br /> results for the tanks are presented in Table 1 <br /> Product dispenser and piping soil sample data showed TPPH-g detected In samples PD-I <br /> through PD-5, and PP-5 It is noted that TPPH-g concentrations for soil samples PD-2, <br /> 3111791 A/SOILREP <br />