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N <br /> ARCO <br /> SERVICE <br /> STATI O N <br /> a 20 40 <br /> MW-7 SCALE IN FEET <br /> INACCESSIBLE <br /> LOUISE AVENUE <br /> _BMW-4 <br /> 1600 <br /> 3-6 ND<1.0 <br /> f }f N �<16�000<1.0 PLANTER ` <br /> / �� <br /> UNDERGROUND / // <br /> STORAGE TANKS <br /> l J <br /> MW-3 MW-6 <br /> � 1500 <br /> ND<50 <br /> ND<0-501 ND<1-0 <br /> MW-5 o 320173.5 ND<1.0 ND<1.0 <br /> 2200 8700 920 <br /> ND<2.5 I ND<5-0 o <br /> ND<5.0 ND< 0 J <br /> 93000 <br /> UNDERGROUND MW-2 <br /> USED OIL TANK glLANDS 670 <br /> ND<0.5 ND<1.0 <br /> ND<1.0 ND<1.O <br /> 21000 <br /> MW--1 <br /> DIRT LOT 420 <br /> ND<0.5 I ND<1.0 <br /> ND<1-0 ND<1.0 <br /> 9100 <br /> Qs <br /> ITZ <br /> LEGEND <br /> $ GROUNDWATER MONITORING WELL FIGURE 3 <br /> TBPH TC CONCENTRATION OF CONSTITUENTS CONCENTRATIONS OF PETROLEUM <br /> ME IN MICROGRAMS PER LITER HYDROCARBONS IN GROUNDWATER <br /> TPH-G TOTAL PETROLEUM <br /> HYDROCARBONS AS GASOLINE OCTOBER 15, 1997 <br /> B BENZENE BP OIL SERVICE STATION NO. 11195 s <br /> T TOLUENE 16500 SOUTH INTERSTATE 5 <br /> E ETHYLBENZENE LATHROP, CALIFORNIA <br /> X TOTAL XYLENES PROJECT N0. 10-151 <br /> MTBE METHYL TERT BUTYL ETHER <br /> NOT DETECTED ABOVE REPORTED 3 <br /> ND DETECTION LIMIT ^ AL15T0 ENGINEERING GROUP <br /> WALNUT CREEK, CALIFORNIA <br />