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11 March 2002 <br /> AGE-NC Project No 95-0130 <br /> Page 13 of 13 <br /> 4 7 SOIL VAPOR EXTRACTION/IN-SITU AIR SPARGING PILOT TEST <br /> Following the IAS pilot test, an eight-hour SVE/IAS pilot test will be performed at the site to <br /> determine effectiveness of SVE and IAS simultaneously An internal combustion(IC)driven engine <br /> will be used to apply a vacuum on SVE well VW-4 while wells VW-1, VW-2, VW-3, EW-1 and <br /> MW-8 will be utilized as observation points During the SVE pilot test,SVE operational parameters <br />' including soil-gas vapor concentrations,air flow and vacuum measurements will be monitored at Y2- <br /> hour intervals utilizing Dwyer Magnehelcc vacuum gauges and a photo-ionization detector (PID <br /> Thermo Environmental 5 80A, 10 0 eV,calibrated to isobutylene) A compressor driven unit will be <br /> used to inject air into the subsurface via IAS well AW-1 while air spargfng rate, vapor <br /> concentrations,ground water depths and dissolved oxygen will be measured at approximate %Z-hour <br /> intervals from wells MW-1, MW-2, MW-3 and MW-4 <br /> Soil vapor samples will be collected from VW-4 at 2-hour intervals in Tedlar bags and analyzed for <br /> TPH-g, BTEX and MTBE from a DHS-certified laboratory Soil vapor field parameters and <br />' analytical results will facilitate the design of an SVE system and will be used to determine a general <br /> radius of influence for spacing of SVE wells, selection of an appropriate SVE system and determine <br /> . feasibility of IAS as a remediation alternative <br /> I <br /> 1 <br /> IAdvanced GeoEnvironmental,Inc <br /> I <br />