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C !"' C C � <br /> EXPLANATION <br /> SQR Ground-water monitoring'well <br /> O Water supply well <br /> Q1.06 Benzene isoconcentrotion contour <br /> U-6� X0.05 Benzene concentration' in ppb <br /> 400 sampled on January 21, 1993 <br /> -8 #U-7 <br /> ND / ND ND Not Detected (See laboratory <br /> reports for detection limits) <br /> ND <br /> *U-s O u-1 <br /> #U-10- 1.90 - r, <br /> � I <br /> ND O LJ <br /> �. L J .. <br /> *U-3 <br /> ND WSW-1 <br /> ND a. <br /> ♦8.2 J <br /> s <br /> r� <br /> ND <br /> �rn iJ <br /> .. <br /> .N_ <br /> . I <br /> I 0 50 <br /> Base Mop: UNOCAL Genral Arrangement Plan .(Dwg. <br /> No. F3A10) and Extended Si.te;Mop <br /> PAVE ROADWAY prepared by Pacific Environmental Group Scale in Feet <br /> BENZENE ISOCONCENTRATION MAP PLATE <br /> GeoStrategies Inc. UNOCAL Bulk Plant #0788 <br /> 8203 East 11 th Street <br /> Tracy, California <br /> JOB NUMBER REVIEWED BY DATE REVISED DATE <br /> .784680-4 2/93 <br />