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M TABLE 3 - CONTINUED Analytical Results Of Ground Water Samples Nomellml Construction Co 1045 West Charter Way, Stockton, California Ground Screen 8015M 8020 8260M WDell Date Water Interval Ethyl - Depth (ft bsg) TPH-g TPH-d Benzene Toluene benzene Xylenes MTBE MTBE DiPE TAME ETBE TBA VW-5 05-18-01 1553 5-20 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<10 06-28-99 1505 730 320# 15 5 1 ND<2 5 3 6 12 91 ND<1 ND<1 ND<1 58 VW-6 10-20-99 1669 5-20 1,600 5001 31 ND<2 5 ND<2 5 ND<2 5 ND<2 5 12 ND<3 ND<3 ND<3 50 05-18-01 1565 ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<10 VW-7 05-18-01 15 52 5-20 ND<50 - NIM 5 ND<0 5 ND<0 5 ND<0 5 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<10 i VW-8 06-28-99 1482 5-20 1,200 78t 46 11 25 61 18 16 ND<l ND<1 ND<1 26 05-18-01 1540 t ND<50 - ND<0 5 ND<0 5 ND<0 5 ND<0 5 - ND<0 5 ND<0 5 ND<0 5 ND<65 ND<10 EW-1 10-20-99 1711 20-40 13,000 4,2001 1,100 160 230 390 ND<25 ND<25 I ND<25 ND<25 ND<25 ND<130 Notes All units reported asµg11(micrograms per liter or parts per billion) TPH-g total petroleum hydrocarbons quantified as gasoline,TPIi-d total petroleum hydrocarbons quantified as diesel DIPS di-isopropyl ether,ETBE ethyl tertiary butyl ether,TAME tertiary amyl methyl ether,TBA tertiary butanol alcohol,MTBE methyl tertiary butyl ether t lacking typical diesel characteristics,sample chromatogram did not have atypical diesel pattern,gasoline range compounds are significant t aged diesel is significant - NA not analyzed ND not detected ' < indicates constituents were not detected at a concentration greater than the reporting limit shown ft bsg feet below surface grade 4 Advaseed GeoEnvironmcntal,Inc i