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J <br /> 0 <br /> a <br /> PARKING Z <br /> MW-1 <br /> ND<50 J <br /> ND<0.5 ND<O 5 1- <br /> Z <br /> ND<O 5 ND<0.5 Q <br /> 0 40 80 <br /> AMW-5 <br /> 56 <br /> ND<O 5 ND<0.5 MW-7 SCALE IN FEET <br /> I ND<0.5 ND<0.5 ND<50 <br /> ND<O 5 ND<0.5 <br /> I t MW-2 ND<0.5 ND<0.5 ` LEGEND: <br /> 61 <br /> PARKING ND<0.5 ND<O.S -40- GROUNDWATER MONITORING WELL <br /> BP OIL ND<0.5 N!�<0 5 .LACK IN <br /> SERVICE STATION THE BOX TPH-G <br /> B T CONCENTRATION OF CONSTITUENTS <br /> I IN PARTS PER BILLION (PPB) <br /> MW-3 <br /> ! (0.30 FOOT TPH-G TOTAL PETROLEUM HYDROCARBONS <br /> ND <br /> W_ MW -4 FREE PRODUCT) 276 AS GASOLINE <br /> ND<O 5 ND<0.5 (SHEEN) B BENZENE <br /> ND<O 5 ND<0.5 - T - MW-5** KND<0.51ND<O <br /> AMW-6 T TOLUENE <br /> - . ND<50 E ETHYLBENZENE <br /> ic <br /> 5 AMW- <br /> N D<5 X TOTAL XYLENES <br /> AMW-4 ND<O 5 ND<0.5 ND<0.5 N <0.5 ND NOT DETECTED ABOVE REPORTED <br /> ND<50 <br /> ND<0.5 ND<0.5 ND<0.5 N <0.5 DETECTION LIMIT <br /> ND<0.5 ND<0.5 ! CALCULATED GROUNDWATER <br /> TRACY BOULEVARD GRADIENT DIRECTION AND <br /> MAGNITUDE <br /> SIE RECOVERY WELL NOT SAMPLED <br /> MW-6 MW-8 <br /> (SHEEN) 75 <br /> ND<0.5 ND<0.5 <br /> 15 1 5.2 FIGURE 3 <br /> c, <br /> CONCENTRATIONS OF <br /> EXXON AMW-1 CHEVRON PETROLEUM HYDROCARBONS IN <br /> ND<50 GROUNDWATER (DECEMBER 8, 1992) <br /> ND<0.5 ND<O 5 BP OIL SERVICE STATION NO. 11194 <br /> ND<0.5 ND<0.5 2375 TRACY BOULEVARD <br /> TRACY, CALIFORNIA i <br /> ' PROJECT NO. 10-085 � <br /> ALISTO ENGINEERING GROUP <br /> CONCORD, CAUFORN1A <br />