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• TABLE 4 ANALYTICAL RESULTS OF HISTORICAL GROUND WATER SAMPLES Geweke Land Development and Marketing 16 South Cherokee Lane, Lodi, California (µg11) yl- Well I D:- Date . TPH as ` MTBE Benzene Toluene benzene V Xylene•„ Gasoline MW-8 7-6-90 1,700 NA 140 55 160 160 6-24-91 140 NA 0.4 0.64 1.1 15 12-9-91 <50 NA <0.3 <0.3 <0.3 <0.3 12-31-92 1,580 NA 55 15 30 15 4-9-93 650 NA 4.8 4.9 14 30 3-28-94 290 NA 2.9 0.59 7.9 17 9-19-94 11200 NA 17 1.4 21 71 12-19-94 360 NA 6.5 1.9 11 42 3-13-95 770 NA 10 1.1 33 110 6-12-95 830 NA 7.5 1.7 27 75 9-12-95 660 NA 11 1.6 27 50 12-11-95 710 NA 7.0 1.4 30 42 3-18-96 600 NA 2.5 0.62 19 32 6-19-96 1,800 NA 9.1 2.1 51 80 9-17-96 880 NA 7.3 2.1 31 37 12-17-96 700 NA 3.6 0.68 29 29 3-18-97 580 NA 2.9 <0.5 21 65 6-11-97 2,800 <5.0 15 4.6 90 150 9-1647 910 <5.0 6.5 0.91 49 49 12-16-97 450 <5.0 2.2 0.57 22 18 3-10-98 130 <5.0 0.94 1.5 3.5 16 6-9.98 270 <5.0 0.66 0.61 6.3 21 9-10-98 3,700 <1.0 14 21 210 170 12-21-98 1,100 <5.0 13 <0.5 170 90 MW-9 7-6-90 21300 NA 140 92 190 710 6-24-91 3,900 NA 300 190 180 240 12-9-91 0.7 NA <0.3 <0.3 8 12 12-31-92 1,600 NA 39 10 44 46 4-1-93 400 NA 5.8 3.9 13 23 3-28-94 690 NA 27 1.0 34 22 9-19.94 4,200 NA 49 5.4 130 200 12-19-94 2,300 NA 38 2.3 160 200 3-13-95 1,400 NA 13 0.57 72 50 6-12-95 620 NA 4.5 1.2 27 29 9-12-95 4,200 NA 37 3.2 250 270 12-11-95 1,800 NA 17 2.0 110 61 3-18-96 330 NA 1.9 <0.5 15 18 6-19-96 11,000 NA 45 4.2 430 380 9-17-96 12,000 NA 120 31 690 770 12-17-96 1,700 NA 9.4 2.9 54 32 3-18-97 290 <5.0 0.71 <0.5 9.3 16 6-11-97 6,700 5.2 20 3.1 190 160 9-16-97 8,600 <5.0 55 3.7 550 430 12-16-97 1,100 <5.0 3.8 4.7 39 32 3-10-98 <50 <5.0 <0.5 <0.5 <0.5 <0.5 6-9-98 <50 <5.0 0.72 1.8 1.8 3.0 9-10-98 4,800 <1.0 9.1 14 130 110 12-21-98 3,400 20 7.1 • Advanced GeoEnvironmental,Inc.