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EXPLANATION <br /> * Groundwater monitoring well <br /> A/B/C TPH(G) (Total Petroleum Hydrocarbons <br /> / as Gasoline)/Benzene/MTBE <br /> concentrations in ppb <br /> Q�/ iMW-4 9`j�,R ND Not Detected <br /> �/ ND/ND/1 3.6+ Oq� + MTBE by EPA Method 8260 <br /> Commercial / � � <br /> Building \ <br /> /ND/ND/ <br /> 1.33+ Dispenser <br /> // MW-3 islands Parking <br /> / ND/ND/ Store <br /> 1,61 D+ Building <br /> *'/ MW-2 r �`Underground -M <br /> 11Storageg, <br /> JTanks Block <br /> ND/ND/3.77+ wall_ <br /> THORNTON ROAD <br /> Vacant Commercial Building <br /> 0 40 <br /> Scale in Feet <br /> Source: F ure modified from drawing provided by SECOR International Inc. <br /> CONCENTRATION MAP FIGURE <br /> JEJOETTLER • R"11 INC. Tosco (Circle K) Unit #08671 <br /> 6747 59M CL. Saito J 8606 Thornton Road 2 <br /> Wft. CA 945M (925) sst-7&9' Stockton, California <br /> 108 NUMBER REVIEWED BY DATE REVISED DATE <br /> 180198 May 26 2001 <br /> FVLE NAME: P:\ErmRO\TOSCO\0a671\001-08671.DWG I Layout Tab: Conz <br />