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TABLE 2 - CONTINUED Analytical Results of Ground Water Samples PACIFIC CAR WASH 4405 Pacific Avenue, Stockton, California (g/1) Ground Screen Ethyl- MTBE MTBE Well I D Date Water Interval TPH-G I Benzene Toluene benzene Xylene 8020 8260 TAME DIPS ETBE TBA Depth ft bs 11-24-97 3310 2500 94 450 54 340 ND<10 ND<20 ND<20 ND<20 ND<20 ND<100 02-18-98 2990 ND<50 073 ND<0 5 ND<0 5 ND<0 5 1 1 ND<5 ND<1 ND<l ND<1 ND<5 05-14-98 2356 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 17 18 ND<1 ND<1 ND<1 61 MW4 10-19-98 2653 30 to 50 160 1 5 ND<0 5 ND<0 5 ND<0 5 46 55 12 ND<1 ND<1 ND<5 01-21-99 2678 ND<50 ND<0 5 0 91 ND<0 5 1 48 53 ND<1 ND<l ND<l ND<5 04-15-99 23 16 120 51 17 3 5 16 ND<0 5 ND<2 ND<2 ND<2 ND<2 ND<10 07-29-99 2528 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 10 1 9 ND<1 ND<l ND<l 25 11-24-97 3278 ND<50 13 25 ND<0 5 19 ND<0 5 ND<5 ND<l ND<l ND<1 ND<5 02-18-98 2893 ND<50 0 6 ND<6 5 ND<0 5 ND<0 5 12 ND<5 ND<1 ND<l ND<1 6 8 05-14-98 2299 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<5 ND<1 ND<1 ND<1 ND<5 10-19-98 26 15 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<1 ND<1 ND<l ND j MW-5 01-21-99 2639 25 to 45 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 1 2 ND<1 ND<1 ND<1 ND<1 ND<5 04-15-99 2267 ND<50 072 2 5 ND<0 5 2 ND<0 5 ND<1 ND<1 ND<l ND<1 ND<5 07-29-99 24 87 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<1 ND<1 ND<1 ND<1 ND<5 10-12-99 2630 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<1 ND<1 ND<1 ND<1 ND<5 11-24-97 3487 130,000 7,100 19,000 2,600 17,000 ND<500 81 ND<l ND<1 ND<1 72 02-18-98 3133 4,500 210 190 54 290 32 12 ND<1 ND<1 ND<1 ND<5 05-14-98 2517 66,000 5,600 11,000 2,700 14,000 ND<150 ND<85 ND<85 ND<85 ND<85 ND<85 MW-6 10-19-98 28 06 25 to 45 110,000 5,700 17,000 2,500 13,000 ND<250 40 ND<20 ND<20 ND<20 ND<100 01-21-99 2816 120,000 5,700 17,000 2,600 14,000 ND<250 120 ND<10 ND<10 ND<10 ND<50 04-15-99 2450 50,000 2,400 7,200 1,400 7,000 ND<100 20 ND<14 ND<14 ND<14 ND<70 07-29-99 2660 59,000 2,500 4,100 1,300 5,100 ND<250 390 ND<17 ND<17 ND<17 ND<85 10-12-99 2809 31,000 1 1,700 1,400 730 1 2,700 ND<250 27 ND<2 5 ND<2 5 ND<2 5 ND<13 10-15-98 2742 2,000 27 ND<5 19 43 20 21 ND<1 ND<l ND<l 40 01-21-99 2747 4,600 220 12 ND<5 60 40 43 2 6 ND<1 ND<1 30 MW-7 04-I5-99 23 95 20 to 40 2,700 190 ND<5 21 100 31 22 12 ND 07-29-99 2605 ND<50 0 89 ND<0 5 ND<0 5 ND<0 5 6 6 5 ND<1 ND<1 ND<1 ND<5 10-12-99 2750 800 68 ND<2 5 82 9 2 56 51 ND<l 3 1 ND<1 3 1 ND<l 3 27 Advanced Geo>Environmental,Inc