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GeoHydrologic Consultants, Inc contour map (Figure 4) and the current distributions of TPHg, benzene, and MTBE to ' groundwater which are presented in Figures 5A, 513, and 5C, respectively Groundwater depths on February 9, 2005 ranged from 48 68 feet bgs in MW-5 to 50 64 feet bgs 1n MW-6 Groundwater gauging data are summarized in Table 2A Oxygenate data are included in Table 2B Based on the calculated groundwater elevations, the groundwater flow direction was estimated to be to the northeast at an approximate gradient of 0 0039 feet/foot The groundwater elevation map for February 9, 2005 is included as Figure 4 Groundwater samples were collected from the newly installed wells EW-5D and EW-5S during the multi-phase extraction tests (March 17 and 24, 2005) and during the groundwater pump tests performed on each of the two wells ( March 31 and April 6, ' 2005), respectively The collected groundwater samples were analyzed by Associated Laboratories Each groundwater sample was analyzed for TPHg by EPA Method 8015 Modified, for BTEX, and oxygenates (MTBE, ETBE, DIPE, TAME, and TBA) by EPA Method 8260B 4.4 Soil Sampling Results A total of seventeen soil samples from deep extraction well EW-5D were analyzed for TPHg by EPA Method 8015M, for BTEX, MTBE, ETBE, DIPE, TAME, and TBA using lie EPA Method 8260B, for ethanol/methanol by EPA Method 8015M, and for lead by EPA Method 601 OB TPHg concentrations were detected in nine of the 17 soil samples with the highest concentration detected in EW5D-40 at 13,100 mg/kg Benzene concentrations were detected in ten of the soil samples collected from EW-5D with the highest concentration ' detected in EW5D-65 at 83 3 mg/kg , MTBE concentrations were detected in seven of the soil samples collected from the boring for EW-5D with the highest concentrations detected in EW513-50 at 13 0 mg/kg Lead was detected in all 17 of the soil samples collected for EW-5D The highest concentration of lead was detected in soil sample EW5D-75, with a concentration of 9 44 mg/kg The results are summarized with the other soil samples collected from the Site in Table 1 The laboratory reports and chain-of-custody documentation for these samples is included in Appendix C The distribution of the maximum detected TPHg, benzene, and ' MTBE concentrations in soil is depicted in Figure 4A, 413, 4C, 4D, 4E, and 4F, respectively 4.5 Groundwater Sampling Results The analytical results for the groundwater samples collected from EW-5D and EW-5S on March 17 and 24, 2005 (multi-phase extraction pilot test) and March 31 and April 6, 2005 (aquifer testing) are included in their respective subsections of this report TOC 171 Pilot Study page 8