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' TABLE 2 • ANALYTICAL RESULTS OF GROUND WATER SAMPLES Shockey And Sons Trucking 580 Milgeo Avenue, Ripon, California (µg11} ' Well 1.D. Sample TPH-g TPH-c1 Benzene Toluene Ethyl- Xylenes MTBE (Well Date benzene screen MW-3 06-24-96 <50 240 <0.5 <0.5 <0.5 <0.5 12 (12-32) 09-24-96 <50 400 <0.5 <0.5 <0.5 <0.5 <50 12-05-96 <50 180 <0.5 <0.5 <0.5 <0.5 NA 03-27-97 <50 190 <0.5 <0.5 <0.5 <0.5 <5.0 06-06-97 <50 220 <0.5 <0.5 <0.5 <0.5 <5.0 ' 10-31-97 <50 520 <0.5 <0.5 <0.5 <0,5 <5.0 01-23-98 <50 570 <0.5 <0.5 <0,5 <0.5 <5.0 04-07-98 <50 200 <0.5 <0.5 <0.5 <0.5 <5.0 06-11-98 <50 220 <0.5 <0.5 <0.5 <0.5 <5.0 12-01-98 <50 330 <0.5 <0.5 <0.5 <0.5 03-25-99 <50 230 <0.5 <0.5 <0.5 <0.5 <5.0 06-25-99 <50 140 0.63 3.1 0.65 3.5 <5.0 ' 03-17-00 <50 <50 <0.5 <0.5 <0.5 <0.5 <5.0 06-15-00 <50 82 <0.5 <0.5 <0.5 <0.5 <5.0 04-11-01 <50 400 <0.5 <0.5 <0.5 <0.5 <5.0 ' MW-4 06-24-96 660 22,000 0.63 2.7 <0.5 54 5.2 ($-28) 09-24-96 NA 140,000 10 2.2 4.1 12 <5.0 ' 12-05-96 300 44,000 3.8 <0.5 0.53 1.1 NA 03-27-97 <50 2,600 <0.5 <0.5 <0.5 0.63 <5.0 06-06-97 390 220,000 1.2 0.57 0.71 1.8 <5.0 10-31-97 220 19,000 5.0 0.61 0.56 1.3 7.7 ' 01-23-98 500 79,000 1.1 0.58 0.66 0.60 <5.0 04-07-98 190 13,000 1.1 <0.5 <0.5 <0.5 <5.0 06-1.1-98 230 23,000- 0.55 <0.5 <0.5 <0.5 <5,0 ' 03-25-99 110 6,200 0.65 <0.5 <0.5 <0.5 <5.0 06-25-99 280 75,000 2.1 0.64 <0.5 0.96 . <5.0 03-17-01 .270 2,800 0.56 <0.5 <0.5 <0.5 <5.0 06-15-00 <50 4,800 <0.5 <0.5 <0.5 <0.5 <5.0 ' 1 04-11-01 1 590 1 85,000 0.56 1 <0.5 1.7 0.91 <5.0 Notes: Ground water depth measurements in feet µg/L: micrograms per Liter. TPH-g: Total petroleum hydrocarbons quantified as gasoline. TPH-d: Total petroleum hydrocarbons quantified as diesel. MTBE: methyl tertiary butyl ether Not analyzed ' Advanced GeoEnvironntental,Inc.