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3 PILOT TESTING SUMMARY <br /> 3.1 Pilot Test Procedures <br /> A soil venting and air sparging pilot test was performed in two phases at the facility <br /> from June 20 to June 22, 2000 The pilot test was performed in general accordance <br /> with procedures described in Philip's May 15, 2000,Pilot Testing Work Plan (Work <br /> Plan) The pilot test consisted of a step vacuum test, a soil venting test, and a <br /> combined soil venting and air sparging test A brief chronology of events is <br /> summarized below <br /> • Equipment setup and step vacuum test—June 20 <br /> • Soil venting test—June 21 <br />' • Combined soil venting and air sparging test—June 22 <br /> • Equipment disassembly and demobilization—June 23 <br /> Soil venting was performed at vent well VW-1 installed in June, 2000 in response to <br /> elevated groundwater levels Air sparging was performed at well SP-1 The Site <br /> Plan (Appendix A, Figure 4) illustrates well locations Recovered soil vapors were <br /> treated with granular activated carbon (GAC)prior to atmospheric discharge Field <br /> data recorded during testing is summarized in Figures 2 and 3 and Tables 1 <br />' through 3 <br />' Table 1 <br /> VAPOR ANALYTICAL SUMMARY <br /> VENTING WELL VW-1 <br /> Concentration(ppm-v) <br /> Date Time Benzene Toluene Ethylbenzene Xylenes BTEX TPH <br /> 6122100 15 00 563 15 1 208 6 82 2963 655 <br /> 1800 031 302 058 167 558 112 <br /> PPM-V Parts per million by volume <br /> Mote Samples were collected using an oil-less vacuum pump purged for five minutes prior to filling a tedlar sample bag <br /> Remedial Action Work Plan <br /> Prepared for Tnk EARTRGRAINIS COMPANY Prepared by Philip Services Corp <br /> H 1ENV1624001451itAP61300 doc 7 8131100 <br />