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r r r r r r r r r r r r r r r r r r r C TABLE 3 - CONTINUED Analytical Results of Ground Water Samples PACIFIC CAR WASH 4405 Pacific Avenue, Stockton, California Ground Screen. . Ethyl- MTBE MTBE Well I.D. Date Water Interval TPH-G Benzene Toluene benzene Xylene 8020 8260 TAME DIPE ETBE TBA Depth ft bs 10-15-98 27.42 2,000 27 ND<5 19 43 20 21 ND<1 ND<1 ND<1 40 01-21-99 27.47 4,600 220 12 ND<5 60 40 43 2.6 ND<1 ND<1 30 04-15-99 23.95 2,700 190 ND<5 21 100 31 22 1.2 ND<1 ND<1 21 07-29-99 26.05 ND<50 0.89 ND<0.5 ND<0.5 ND<0.5 6.6 5 ND 10-12-99 27.50 800 68 ND<2.5 8.2 9.2 56 51 ND<1.3 ND<1.3 ND<1.3 27 01-20-00 27.89 1,500 23 ND<2.5 5.1 11 85 110 ND<5 ND<5 ND<5 ND<25 04-14-00 22.99 550 110 ND<2.5 2.8 19 42 32 ND<1 ND<1 ND<1 16 MW 08-17-00 25.72 20 to 40 190 16 ND<0.5 7 23 0.78 0.66 ND<0.5 ND<0.5 ND<0.5 ND<50 12-01-00 27.62 2,200 110 ND<2.5 70 230 52 59 ND<5 ND<5 ND<5 ND<25 03-27-01 27.29 820 ND<0.5 ND<0.5 ND<0.5 ND<0.5 730 580 ND<20 ND<20 ND<20 ND<100 06-26-01 28.15 2,000 ND<2.5 ND<2.5 ND<2.5 ND<2.5 680 630 ND<25 ND<25 ND<25 ND<1000 09-25-01 30.26 3,700 ND<0.5 ND<0.5 ND<0.5 ND<0.5 2,100 2,200 ND<50 ND<50 ND<50 ND<250 12-31-01 30.60 1,200 ND<2.5 ND<2.5 ND<2.5 ND<2.5 940 1,200 6.8 ND<2.5 ND<2.5 ND<100 02-14-02 29.86 520' ND<0.5 4.9 ND<0.5 ND<0.5 270 310 ND<5 ND<5 ND<5 ND<25 10-15-98 26.89 410 ND<0.5 ND<0.5 ND<0.5 ND<0.5 55 66 2.9 ND<2 ND<2 ND<10 01-21-99 27.01 470 ND<1 ND<1 ND<1 ND<l 86 120 6.2 ND<1 ND<1 14 04-15-99 23.55 410 1.1 ND<1 ND<1 ND<1 63 57 ND<4 ND<2.5 ND<2.5 ND<13 07-29-99 25.60 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 21 19 ND<l ND<1 ND<1 ND<5 10-12-99 27.02 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 21 19 ND<l ND<1 ND<1 ND<5 01-20-00 27.43 100 ND<0.5 ND<0.5 ND<0.5 ND<0.5 39 41 ND<1 ND<1 ND<l 6.4 04-14-00 22.63 230 ND<0.5 ND<0.5 ND<0.5 ND<0.5 120 72 ND<10 ND<10 ND<10 75 MW 8 08-17-00 25.31 20 to 40 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 32 34 ND<1 ND<1 ND<1 ND<100 12-01-00 27.12 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 61 64 ND<2 ND<2 ND<2 ND<10 03-27-01 26.81 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 48 42 ND<1 ND<l ND<1 ND<5 06-26-01 27.67 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 25 21 ND<2.5 ND<2.5 ND<2.5 ND<100 L09-25-01 29.71 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 22 19 ND<1 ND<1 ND<1 ND<5 12-31-01 30.03 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 7.1 8.7 ND<0.5 ND<0.5 ND<0.5 ND<20 L02-14-02 29.33 ND<50 I ND<0.5 1.1 ND<0.5 I ND<0.5 ND<5 3.4 ND<1 ND Advanced GeoEnvi ro n mental,Inc.