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i 1 2 3 Cone Penetration Testing and Discrete Sampling and Analysis On April 25, 2000, to evaluate the vertical extent of impacted sod and groundwater, Gregg Drilling and Testing, Inc (Gregg), a state licensed drilling contractor (C-57 #656407), advanced a cone penetration test (CPT) boring and collected discrete soil and groundwater samples at one on-site location ' Soil samples were collected into stainless steel sample sleeves with a push-driven soil sampler at 65, 70 and 74 feet bgs All three soil samples contained relatively low concentrations of at least one compound analyzed The sample collected at 65 feet contained 10 mg/kg of TPH-as-gasoline, 0 15 mg/kg of benzene, 0 14 mg/kg of toluene, ' 0 26 mg/kg of ethylbenzene, and 0 73 mg/kg of xylenes The sample collected at 70 feet only contained 0 0071 mg/kg of toluene, and the sample collected from 74 feet only contained 0 02 mg/kg of toluene, 0 0068 mg/kg of ethylbenzene and 0 05 mg/kg of xylenes The five oxygenate compounds, 1,2-dichloroethane (1,2-DCA) and EDB were not detected in any of the three sod sample analyses ' Based on the CPT and pore pressure dissipation data, groundwater-bearing sand and gravel sequences were identified beneath the groundwater table at approximately 60 and 105 feet bgs Gregg discretely sampled the groundwater interval at 60 feet bgs using a SEmulProbe The groundwater sample collected at 60 feet bgs contained 5,700 µg/l of ' TPH-as-gasoline, 76 µg/l of benzene, 61 µg/l of toluene, 53 µg/i of ethylbenzene, 280 µg/I of xylenes, and 11 µg/I of 1,2-DCA The five oxygenate compounds and EDB were not detected in the groundwater sample 1 r 5