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7 <br /> it <br /> EXECUTIVE SUMMARY <br /> ARCO Products Company is remediating gasoline contaminated soil and proposes to <br /> remediate gasoline contaminated groundwater at ARCO station 434, located at 501 Kettleman <br /> Lane in Lodi, California. Currently gasoline vapors are extracted from S on-site vapor extraction <br /> wells and treated by catalytic oxidation. ,Air discharges are regulated under a permit .issued by <br /> San Joaquin County Valley Unified Air Pollution Con of District. <br /> ARCO proposes to extract groundwater from one or more groundwater wells and treat this <br /> water by granulated activated carbon. Implementation of groundwater extraction and treatment <br /> is dependent on obtaining permits and authority to discharge to either a sanitary sewer or an <br /> industrial sewer. <br /> The groundwater monitoring wells at the site are pled on a quarterly basis and analyzed <br /> for TPH and BEIM The concentrations of the constituents are reported in the quarterly reports <br /> which are submitted to the involved agencies. The true effectiveness of the groundwater <br /> extraction system will be measured by the reduction in the constituents in the monitoring wells. <br />