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' 11 March 2002 <br /> AGE-NC Project No 95-0130 <br />' Page 12 of 13 <br />' report with findings and recommendations <br /> Purged ground water will be containerized in an on-site 10,000-gallon Baker tank, following <br /> the 24-hour pump test, a composite "grab" ground water sample will be collected from the <br /> Baker tank to analyze for TPH-g, BTEX, MTBE, TBA, TAME, DIPE, ETBE, EDB and 1,2- <br /> DCA by EPA Methods 8015M, 8020 and 8260M The purged ground water will be transported <br />' under non-hazardous waste manifest off-site to an appropriate disposal facility <br />' 4 5 SOIL VAPOR EXTRACTION PILOT TEST <br /> Following SVE well Installation, an eight-hour SVE pilot test will be performed at the site to <br /> determine feasibility of SVE as a remediation alternative An internal combustion (IC) driven <br /> engine will be used to apply a vacuum on SVE well VW-4 while wells VW-1, VW-2, VW-3, <br /> EW-1 and MW-8 will be utilized as observation points During the SVE pilot test, SVE <br />' operational parameters Including soil-gas vapor concentrations,air flow and vacuum measurements <br /> will be monitored at '/2-hour intervals utilizing Dwyer Magnehellc vacuum gauges and a photo- <br /> ionization detector(PID Thermo Environmental 580A, 10 0 eV, calibrated to isobutylene) <br /> • Soil vapor samples will be collected at two-hour Intervals utilizing a hand air-vacuum pump <br /> and Tedlar bags and analyzed for TPH-g, BTEX and MTBE from a DHS-certified laboratory <br />' Soil vapor field parameters and analytical results will facilitate the design of an SVE system <br /> and will be used to determine a general radius of influence for spacing of SVE wells and the <br /> selection of an appropriate SVE system <br /> 1 <br /> 4 6 IN-SITU AIR SPARGING PILOT TEST <br />' Followingthe SVE pilot test, an IAS pilot test will be performed For performance of an in-situ air <br /> p <br /> sparging(IAS)pilot test, a compressor driven unit will be used to infect air into the subsurface via <br />' the IAS well The IAS pilot test will be operated for a period of 48-hours (2 days) IAS well AW-1 <br /> will be utilized as the air injection point during the 48-hour TAS pilot test while wells MW-1, <br />' MW-2,MW-3,MW-5,MW-8,VW-1, VW-2,VW-3 and EW-1 will be utilized as observation <br /> points Several parameters, including air infection rate, vapor concentrations, ground water depth <br /> and dissolved oxygen will be measured at a minimum of 1-hour intervals from observation wells <br />' Results of the IAS pilot test will be Included In a CAP <br /> 1 <br />' Advanced GcoEnvironmental,Inc <br /> I <br />