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i <br /> i15 January 2001 <br /> AGE-NC Project No 96-0232 <br /> Page 3 of 20 <br /> • Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and TPH-d, <br /> respectively) by EPA Methods 8015NV5030 and 8015M/3550, respectively, <br /> • Volatile aromatic compounds - benzene, toluene, ethyl benzene and xylene (BTEX) with <br /> methyl-tertiary butyl ether (MTBE) by EPA Method 8020, <br /> • Fuel oxygenated compounds - tertiary butanol (TBA), di-Isopropyl ether (DIPE), ethyl tert <br /> butyl ether(ETBE), tert amyl methyl ether(TAME), methanol, ethanol and MTBE by EPA <br /> Method 8260M, and <br /> I • Ethylene dibromide (EDB) and 1,2-dichloroethane (1,2-DCA) by EPA Method 8260M <br /> 222 Laboratory Results Of EW-1 Water Sample <br /> Theab ground water le collected from EW-1 on 06 October 2000 detected MTBE at <br /> �' �' sample <br /> concentrations of 58 and 564g/l utilizing EPA Methods 8020 and 8260 Modified,respectively None <br /> of the other analytes were detected above laboratory reporting limits The analytical results from <br /> EW-1 ground water sample are summarized in Table 7 Baker tank Non--Hazardous Waste Manifests <br /> are presented In Appendix A The laboratory report and chain-of-custody forms are presented in <br /> Appendix C <br /> 3.0. INSTALLATION OF GROUND WATER EXTRACTION WELLS <br /> On 09, 10, 11, 12, 16 and 17 October 2000, ground water extraction wells EW-4, EW-5, EW-6, <br /> EW-7, EW-8, EW-9 and EW-10 were Installed at the site to Implement the final ground water <br /> remediation plan for the core petroleum hydrocarbon-Impacted area at the site, ground water <br /> extraction well Installation procedures for the site were outlined in Final Rernediazon Plan, dated <br /> 31 August 2000, prepared by AGE and approved by the RWQCB by letter dated 05 October 2000 <br /> 3 1 EXTRACTION WELL INSTALLATION PROCEDURES <br />' Seven soil bonngs/ground water extraction wells (EW-4, EW-5, EW-6, EW-7, EW-8, EW-9 and <br /> EW-10) were advanced at the site to supplement ground water remediation Sall borings EW-4, <br /> EW-5,EW-6, EW-7, EW-8 were advanced vertically to a depth of 35 feet below surface grade (bsg) <br />' utilizing a CME-85 high-torque,truck-mounted drill ng equipped with 12-inch diameter hollow stem <br /> augers, soil borings EW-9 and EW-10 were advanced to 35 feet bsg utilizing a B-55 limited access <br /> ng equipped with 12-Inch diameter hollow stem augers Soil cuttings were stockpiled on and covered <br />' by plastic sheeting in the northeast portion of the site in an area lacking public access The soil <br /> boring locations are depicted In Figure 2 <br /> Advanced GeoEnvironmental,Iric <br /> I <br />