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F <br /> ARCO AM PM <br /> SERVICE STATION <br /> !ob <br /> PRIVATE ROAD I I <br /> 0 30 60 <br /> SCALE IN FEET <br /> LEGEND <br /> $ GROUNDWATER MONITORING WELL <br /> MW-4 SERVICE TPH-G CONCENTRATION OF CONSTITUENTS <br /> STATION BMW-3 ui W B T IN MICROGRAMS PER LITER,- <br /> BUILDING z Z E x EXCEPT DISSOLVED OXYGEN, <br /> I I D0 WHICH IS IN PARTS PER MILLION <br /> L J DISPENSER TPH-G TOTAL PETROLEUM <br /> ISLANDS W MW-7 HYDROCARBONS AS GASOLINE <br /> UNDERGROUND B BENZENE <br /> USED OIL TANK U Q T TOLUENE <br /> MW-5 = E EfHYLBENZENE <br /> ND<50 x TOTAL XYLENES <br /> 0.52 1 ND<1.0 ¢ F_ <br /> i <br /> ND<1.0 ND<1.0 (Al <br /> s $MW-2 3.7 w 00 DISSOLVED OXYGEN <br /> 770 <br /> $ p NOT DETECTED ABOVE REPORTED <br /> 12 ND<5.0 ND DETECTION LIMIT <br /> ND<5.0 0 D<5.0 ► CALCULATED GROUNDWATER <br /> 0.001 GRADIENT DIRECTION AND <br /> mW_5a — f J o MAGNITUDE IN FOOT PER FOOT <br /> ND<0.5 L NO<1.0 UNDERGROUND NOT SAMPLED <br /> ND<1.0 ND<1.0 <br /> 4.3 <br /> PLANTER <br /> DRIVEWAY <br /> pR1VEW p,Y <br /> TRANSFORMER <br /> FIGURE 3 <br /> CONCENTRATIONS OF PETROLEUM <br /> HYDROCARBONS IN GROUNDWATER <br /> MARCH 11 0 1997 <br /> BP OIL SERVICE STATION NO. 11193 R <br /> 3202 WEST HAMMER LANE <br /> MW 1206 STOCKTON, CALIFORNIA <br /> rr� <br /> ND<0.5 ND<1.0 PROJECT NO. 10-136 <br /> ND<1.0 i ND<1.0 <br /> 3.9 <br /> ALISTO ENGINEERING GROUP <br /> WALNUT CREEK, CALIFORNIA <br /> 0 <br />