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TABLE 3 - CONTINUED Analytical Results Of Ground Water Samples Nomelllnl Construction Co 1045 West Charter Way, Stockton, California Well Ground Screen 8015M 8020 8260M I D Date Water Interval Depth (ft bsg) TPH-g TPH-d Benzene Toluene Ethyl- Xylenes MTBE MTBE DIPE TAME ETRE TBA benzene V W-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 06-12-03 17 03 ND<50 ND<50 ND<0 5 ND<0 5 1 ND<Q 5 ND<l ND 06-28-99 15 05 730 3201 15 51 ND<2 5 3 6 12 91 ND<1 ND VW-6 10-20-99 1669 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 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 06-12-03 1720 150 ND<50 ND<0 5 1 ND<0 5 ND<0 5 ND 1 VW-7 05-18-01 1552 ND<50 - ND<0 5 ND<0 5 ND<Q 5 ND<0 5 - ND<0 5 ND<0 5 ND<Q 5 ND<0 5 ND<10 06-12-03 '16 99 5-20 ND<50 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<l ND VW-8 06-28-99 1482 1,200 78t 46 11 25 61 18 16 5-20 ND 05-18-01 1540 ND<50 - ND<0 5 1 ND<0 5 ND<0 5 ND<0 5 - ND<0 5 ND<0 5 ND<0 5 ND<Q 5 ND<10 EW-1 ]0-20-99 1711 20-4013,000 4,2D0t 1,100 160 230 39D ND<25 ND<25 ND<25 ND<25 ND<25 ND<130 Notes All units reported asµg11(micrograms per Mer or parts per billion) TPH-g total petroleum hydrocarbons quantified as gasoline TPH-d total petroleum hydrocarbons quantified as diesel DIPE 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 I 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 _ Advanced GeoEnvironmental,Inc - i 1