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Vapor Extraction Test Report <br /> Former Thrifty Oil Service Station # 172 <br /> September 14, 1995 <br /> • The amount of vacuum that could be applied to the test wells during vapor extraction testing <br /> was limited by the minimum oxygen requireme,:of the internal combustion engine used for <br /> the test and the low oxygen content of the soil vapor extracted from the vadose zone. <br /> Accordingly, larger effective radii-of-influence and a higher flow rates are most likely <br /> achievable using SVE equipment that is not limited by the low oxygen content in the vadose <br /> zone (i.e., blower/catalytic oxidizer or blower/carbon treatment combinations). <br /> 1 The observed flow rates, estimated ERI values, and calculated mass recovery rates for the <br /> three tests indicate that vapor extraction may be a feasible remediation option for the <br /> mitigation of hydrocarbon-affe€ted soil in the vadose zone beneath this site <br /> 1 <br /> i <br /> i <br /> LIMITATIONS <br /> Ilse vapor extraction test activities and analyses presented in this report lave been conducted in accordance with <br /> current practice and the standard of carr exen=od by geologists,hydrogeoloPms, and engineers performing similar <br /> Wks in this ares. The findings sad conclusions are based solely upon an analysis of the observed conditions. If <br /> waW conditions differ from those described in this mpoR, our office should be notified. <br />