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FINDINGS <br /> Field Observations <br /> Pressure response levels of 48 cfm, and 0 1 inches of water were detected in Monitoring <br /> Wells MW-1, MW-2, MW-3, and MW-4 while injecting air at approximately 38 cubic feet <br /> per minute (cfm) into MW-10 These vacuum levels indicate semi-permeable soil <br /> conditions. Field data is included in Appendix A. <br /> CONCLUSIONS <br /> The pressure response levels observed within the vadose zone indicates vapor extraction is <br /> a feasible remediation alternative for mitigation of hydrocarbon-affected soil and ground <br /> water in the former and current capillary fringe (40 to 66 fbg) beneath the site. Multi-phase <br /> fluid flow theory and practical experience indicate vapor extraction and concurrent ground <br /> water pumping can be used to remediate hydrocarbon-affected soil within the capillary <br /> fringe (40 to 66 fbg). — <br /> 6 <br />