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TABLE 2 - CONTINUED Analytical Results of Ground Water Samples PACIFIC CAR WASH 4405 Pacific Avenue, Stockton, California Ground Screen _ Well 1 D Date Water Interval TPH-G Benzene Toluene Ethyl Xylene MTBE MTBE TAME DIPS ETBE TBA Depth ft bs benzene 8020 $260 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<O 5 ND<O 5 ND<O 5 11 ND<5 ND<1 ND<1 ND<1 ND<5 0544-98 2356 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 17 18 ND<t ND<l ND<l 61 1049-98 2653 160 15 ND<O 5 ND<O 5 ND<O 5 46 55 12 ND<1 ND<1 ND<5 MW-4 01-21-99 2678 30 to 50 ND<50 ND<O 5 091 ND<O 5 1 48 53 ND<1 ND 04-15-99 23 16 120 51 17 3 5 16 ND<O 5 ND<2 ND<2 ND<2 ND<2 ND<10 07-29-99 2528 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 10 9 ND<1 ND<1 ND<1 25 - 01-20-00 2726 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 070 11 ND<1 ND<l ND<1 7 6 04-14-00 2216 1 ND<50 0 54 1 ND<O 5 ND<O 5 0 63 1 ND<O 5 ND<1 ND<1 ND<1 ND<1 81 11-24-97 3278 ND<50 13 2 5 ND<O 5 19 ND<O 5 ND<5 ND<1 ND<1 ND<l ND<5 02-18-98 2893 ND<50 0 6 ND<O 5 ND<O 5 ND<O 5 12 ND<5 ND<1 ND<1 ND<1 68 05-14-98 2299 ND<50 ND<O 5 N1<0 5 ND<O 5 ND<O 5 ND<5 ND<5 ND<1 ND 10-19-98 2615 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<1 ND<1 ND<1 ND<1 ND<5 l 01-21-99 2639 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 12 ND<1 ND MW-5 04-15-99 2267 25 to 45 ND<50 072 25 ND<O 5 2 ND<O 5 ND<t ND<1 ND<1 ND<l ND<5 07-29-99 24 87 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<1 ND<l ND<1 ND<1 ND<5 10-12-99 2630 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<1 ND<l ND<1 ND<l ND<5 01-20-00 26 82 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<1 ND<l ND<l ND<1 ND<5 04-14-00 2167 1 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<O 5 ND<0 5 1 11 ND<l ND<1 ND 11-24-97 34 87 130,000 7,100 19,000 2,600 17,000 ND<500 81 ND 02-18-98 3133 4,500 210 190 54 290 32 12 ND 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 10-19-98 28 06 110,000 5,700 17,000 2,500 13,000 ND<250 40 ND<20 ND<20 ND<20 ND<l 00 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 MW-6 04-15-99 24 50 25 to 45 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 1,700 1,400 730 2,700 ND<250 27 ND<2 5 ND<2 5 ND<2 5 ND<13 01-20-00 2857 36,000 1,700 1,900 730 3,500 ND<250 36 ND<10 ND<10 ND<10 ND<50 04-14-00 23 52 17,000 960 3,000 470 1,900 43 37 ND<10 ND<10 ND<10 I ND<50 Advanced GeoEnvironmental,Inc