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Workplan Addemdum Letter for a Limited Subsurface Site Investigation <br /> Moore Petroleum, 5491 F Street,Banta,California . <br /> Page 5 <br /> CONE PENETRATION TESTING (CPT) <br /> Apex proposes to use CPT to help delineate the vertical extent of contamination near the <br /> suspected source area. The boring (CPT-1)will be advanced to a depth of 80-feet bgs (Figure 3). <br /> Groundwater grab samples will be collected from each of the four sandy intervals identified in <br /> the Marty well log (Appendix Q. <br /> Soil and groundwater samples will be submitted, under chain-of-custody documentation, for ' <br /> chemical analyses to a state-certified analytical laboratory. The samples will be analyzed for: <br /> Analysis Performed: <br /> Analysis Abbreviation Designation USEPA MethodNo. <br /> Total Petroleum Hydrocarbons TPHg <br /> as Gasoline <br /> Total Petroleum Hydrocarbons TPHd Gas/Diesel- <br /> as Diesel I Range 8015 Modified <br /> Total Petroleum Hydrocarbons_j Kerosene Hydrocarbons <br /> as Kerosene <br /> Total Petroleum Hydrocarbons TPHmo <br /> as Motor Oil <br /> Benzene Aromatic <br /> Toluene BTEX Volatile 8020 <br /> Eth (benzene Organics <br /> Xylenes (Total) <br /> Tertiary Butyl Alcohol TBA <br /> Methyl Tertiary Butyl Ether MTBE Fuel <br /> Di-isopropyl Ether DIPE Oxygenates <br /> Ethyl Tertiary Butyl Ether ETBE 82608 <br /> Tertiary Amyl Methyl Ether TAME <br /> 1,2-Dichloroethane 1,2 - DCA Lead <br /> Ethylene Dibromide EDB Scaven ers <br /> Drill cuttings from the monitoring well borings will be temporarily stockpiled on site, on and <br /> under plastic sheeting, pending receipt of the analytical results. The drill cuttings will be <br /> properly disposed pending receipt of analytical results. <br /> Auger decontamination, development and purge water will be temporarily stored on-site in <br /> approved Department of Transportation 55-gallon drums pending receipt of the analytical results. <br /> The water will be properly disposed pending receipt of analytical results of soil and groundwater <br /> sampling. <br />