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TABLE 2 Analytical Results of Ground Water Samples PAIGE'S TOWING 1807 Douglas Road, Stockton, California Ground Screen Well Date Water' Interval TPH-g TPH-d Benzene 'toluene Ethyl Xylene MTBE 260 TAME DIPE ETRE TBA LD. Depth ft bs benzene 8020 8260 8264 04-12-99 15:24 ND<50 130 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<l ND<1 ND<l ND<l ND<5 MW-1 07-13-99 15.66 12'/2 to 32'/Z ND<50 81t ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<l ND<l ND<l ND<1 ND<5 10-08-99 16.39 ND<50 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<l ND<1 ND<l ND<l ND<5 04-12-99 15.06 ND<50 ND<50 ND-;0.5 ND<0.5 ND<0.5 ND<0.5 2.5 1.9 ND<l ND<1 ND<l ND<5 MW-2 07-13-99 15.42 10 to 30 ND<50 57t ND<0.5 ND<0.5 ND<0.5 ND<0.5 53 45 ND<2 ND<2 ND<2 ND<l0 10-08-99 .16.17 ND<50 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND6 1.7 ND<l ND<l ND<1 5.0 04-12-99 15.65 ND<50 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 0.71 ND<l ND<l ND<l ND<1 ND<5 MW-3 07-13-99' 16.10 .10 to 30 ND<50 51t ND<0.5 ND<0S ND<0.5 ND<0.5 0.75 1.0 ND 10-08-99 16.77 ND<50 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<1 ND<l ND<1 ND<l ND<5 04-12-99 15.13 ND<50 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<1 ND MW-4 07-13-99 15.56 9 to 29 ND<50 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<l ND<1 ND<l ND<1 ND<5 10-08-99 16.31 ND<50 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<l ND<l. ND<1 ND<l ND<5 Notes.' All units reported as j.cg/1(micrograms per liter or parts per billion) TPH:total petroleum hydrocarbons DIPE:di-isopropyl ether;ETRE:ethyl tertiary butyl ether;TAME:tertiary amyl methyl ether;TBA:tertiary butanol alcohol;MTBE:methyl tertiary butyl ether ND:not detected f:non diesel characteristic <:indicates constituents were not detected at a concentration greater than the reporting limit shown. ft bsg: feet below surface grade Advanced GeAnviron mental,Inc.