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I <br /> ARCO AM/PM <br /> � I <br /> SERVICE STATION - <br /> PRIVATE ROAD <br /> I - -- O 30 60 <br /> ! SCALE IN FEET <br /> MW-4 MW-3 LEGEND <br /> ND<50 ND<50 <br /> 2.3 ND<0.50 $ GROUNDWATER MONITORING WELL <br /> ND<0.50 ND<0.50 ND<0.50 ND<1 .0 TPH-G CONCENTRATION OF CONSTITUENTS <br /> ND<0.50 ND<1 .0 SERVICE 4.7 B T IN MICROGRAMS PER LITER, <br /> 4.6 STATION:. W <br /> F 1 BUILDING' g Z E X EXCEPT DISSOLVED OXYGEN, <br /> MW-7 DO WHICH IS IN PARTS PER MILLION <br /> L J DISPENSER I` rz ND<50 TPH-G TOTAL PETROLEUM <br /> ISLANDS Ld 5.8 ND<0.50 HYDROCARBONS AS GASOLINE <br /> m ND<0.50 ND<1 .0 <br /> UNDERGROUND I :2 4.3 B BENZENE <br /> USED OIL TANK Q T TOLUENE <br /> = E ETHYLBENZENE <br /> MW--5 Q �+ F- X TOTAL XYLENES <br /> 1200 W W DO DISSOLVED OXYGEN <br /> 1 $MW-2 450 7.4 <br /> I 2600 5.9 28 -0 © ND NOT DETECTED ABOVE REPORTED <br /> 4 j <br /> 54016.8 5.4 DETECTION LIMIT <br /> 96164 CALCULATED GROUNDWATER <br /> MW-1 4.9 0.002 GRADIENT DIRECTION AND <br /> 1400 -- - t MAGNITUDE IN FOOT PER FOOT <br /> ND<2.5 ND<2. UNDERGROUND <br /> ND<2.5 ND<5.0 FUEL TANKS <br /> 5.1 I <br /> PLATER <br /> DRIVEWAY l <br /> 1 <br /> pR1V�AY � <br /> TRANSFORMER � - <br /> FIGURE 3 <br /> CONCENTRATIONS OF PETROLEUM <br /> HYDROCARBONS IN GROUNDWATER <br /> MARCH 3, 1995 <br /> BP OIL SERVICE STATION NO. 11193 <br /> 3202 WEST HAMMER LANE R <br /> (nND<0.50lND<l <br /> I STOCKTON, CALIFORNIA <br /> I` PROJECT NO. 10-136 <br /> 1 N <br /> I ^�ALl5TO ENGINEERING GROUP <br /> WALNUT CREEK. CALIFORNIA a <br /> b <br /> I <br />