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v o , 1 A S S O C I A T E S I N C D), and 1,2-dibromoethane (EDB) utilizing EPA Method 8260B The analytical results for �OUJWI samples are summarized in Table�P Laboratory data sheets and Cham-of-custody ' documentation are included in Appendix C 223 Analytical Results ' The groundwater sample collected from boring CPT-2 at a depth of approximately 67 feet bgs contained elevated concentrations of TPHg and BTEX constituents At a depth of 100 feet bgs, low concentrations of TPHg and BTEX constituents were detected None of the groundwater samples collected from CPT-2 contained detectable concentrations of MTBE, TAME, ETBE, TBA, or DIPE,or Piz W a-O§. The groundwater sample collected from boring CPT-3 at a depth of approximately 65 feet bgs ' contained low concentrations of TPHg and benzene The samples collected at 87, 99, and 147 feet bgs did not contain detectable concentrations of TPHg or BTEX constituents None of the groundwater samples collected from CPT-3 contained detectable concentrations of MTBE, ' TAME, ETBE, TBA, or DIPE,0 r 1)2 DtA* 'E D8 The groundwater samples collected from boring CPT-4 at depths of approximately 65 and 88 feet M bgs contained detectable concentrations of TPHg and BTEX constituents At depths of 99 and 144 feet bgs, relatively moderate and low concentrations of TPHg and BTEX constituents were detected, respectively None of the groundwater samples collected from CPT-4 contained detectable concentrations of MTBE, TAME, ETBE, TBA, or DIPE a e 1)z De iq ,r- C-bg The groundwater sample collected from boring CPT-5 at a depth of approximately 85 feet bgs contained relatively moderate concentrations of TPHg and BTEX constituents At a depth of 99 feet bgs, low concentrations of TPHg and BTEX constituents were detected None of the groundwater samples collected from CPT-5 contained detectable concentrations of MTBE, TAME, ETBE, TBA, or DIPE.a r I3l ' 3.0 SUBSURFACE CONDITIONS 3_1 Geology Gregg Drilling & Testing Inc logged soil in the CPT soil borings at intervals of less than one foot Soil from the surface to approximately 35 feet bgs, generally of consisted of varying types ' of silts with layers of silty sands and clay Soil from approximately 35 feet to 65 feet bgs consisted of stiff fine grained material with interbedded layers of clay Soil generally consisted of varying types of silts with clayey silts from depths between 65 feet bgs and 90 feet bgs Soil ' generally consisted of varying types of sand from depths between 90 feet bgs and 125 Silts and fine grained material were encountered-Fro—m125 to 160 feet bgs, the maximum depth explored The CPT logs were used to generate geological cross sections as shown on Figures 4, 5, and 6 The Gregg Drilling & Testing Inc boring log and supporting documentation are contained in Appendix A S 1Enviromenta11163931R PORTSIcptpumpreport doe 4