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EgR AN&II N <br /> Groundwater monitoring well <br /> (Tosco–Circle K) <br /> Groundwater monitoring well <br /> (North Stockton Auto Center) <br /> A/B/C TPH(G) (Total Petroleum Hydrocarbons <br /> as Gasoline)/Benzene/MTBE <br /> Commercial concentrations in ppb <br /> G� Building <br /> + Analysis by EPA Method 8260 <br /> MW-a `i* <br /> <50/<0.501230+ R0�94 <br /> <501<2.0+1<2.0+ � <br /> Mw-1 41 <br /> _ e-b <br /> is r <br /> A/ MW-3 R pence <br /> W * Islands Parking <br /> <50/<0.50/<2.0+ Store <br /> / 1 Build ng <br /> E•r ..�...� ........ ........ ...�.... ` <br /> E — _:._ :�- � Y MW 1 <501<0.501510+— <br /> MW-2 - <br /> E m' (. _ _ / `�� Underground�* <br /> �g I Canopy / * Storage 6, <br /> `JTonks Block <br /> `' ——— — — � <50 <0.50/: 2.0+ wall <br /> r S tI mlk <br /> / <br /> THORNTON ROAD <br /> 0 40 <br /> Vacant Commercial Building <br /> Scale in Feet <br /> Source: Figure modified from drawing provided by SECOR International Inc. and Ground Zero Analysis <br /> CONCENTRATION MAP RGURE <br /> JEIGETTLER - RYAN INC. Tosco (Circle K) Unit #08671 <br /> 6747 Sierra CL, suite a 8606 Thornton Road <br /> Dublin, G 94M (925) 551-7555 Stockton, California 2 <br /> JOB NUMBER REVIEWED BY DATE REMED DATE <br /> 180198 August 22, 2001 <br /> FILE NAME: P:\Enviro\Tosco\oo671\Qo1—o8671.4WG i Layout Tab: Coni m�rr� <br />