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_ TABLE 4 <br /> ANALYTICAL RESULTS OF HISTORICAL GROUND WATER SAMPLES <br /> Chase Chevrolet- Madison <br /> 423 North Madison Street, Stockton, California <br /> _ <br /> y Sample Sample Depth to TPH as f TPH as ,TPH as Ethyl- r <br /> Locatton Date = Water Gasoline Diesel Motor Oil MTBE Benzene _' Toluene; benzene Xylenes <br /> (screen) <br /> MW-19A 8-12-98 1329 <5080`� 460 --- <0 5 <0 5 <0 5 <0 5 <br /> (I L-31) 11-3-98 14 81 <50 180 <250 <5 0 <0 5 <0 5 <0 5 -�0 5 <br /> 2-2-99 1428 <50 <250 <5 0 <0 5 <0 5 <0 5 <0 5 <br /> MW-20A 8-12-98 1475 <50 92--' <250 --- <0 5 <0 5 <0 5 <0 5 <br /> (12-32) 11-3-98 1623 <50 200-j <250 <5 0 <0 5 <0 5 <0 5 <0 5 <br /> 2-2-99 15 74 <50 170 1 <250 <5 0 <0 5 <0 5 <0 5 <0 5 <br /> MW-21A 8-12-98 13 18 9,000 ' 7,800,/ 320 --- 210 - 5 5 230 f 47 .- <br /> _ (12-32) 11-3-98 1476 3,200 V <10 170 / 2 7 160 39 < y <br /> 2-2-99 14 19 4,200 -- 6,500,/- 500 / <10 240_ <0 5 210 45 <br /> MW-19B 8-12-98 1580 <50 360J 790 --- <0 5 <0 5 <0 5 <0 5 <br /> (485-535) 11-3-98 17 13 <50 100 <250 <5 0 <0 5 078 <0 5 0.72 <br /> 2-2-99 1659 <50 130 , <250 <5 0 <0 5 <0 5 <0 5 <0 5 <br /> MW-20B 8-12-98 1632 <50 710 520 --- <0 5 056 <0 5 <0 5 <br /> (50-55) 11-3-98 1762 <50 140 <250 <5 0 <0 5 <0 5 <0 5 <0 5 <br /> 2-2-99 17 11 <50 r 120 <250 <5 0 <0 5 057 r, <0 5 <0 5 <br /> MW-21B 8-12-98 1504 2,600 1,600 <250 --- 201-1, <br /> 0`� J 35 67 27 <br /> (48-53) 11-3-98 1644 2,200 1,600 320 <5 0 12 1 2 49 26 <br /> 2-2-99 1587 1,300 1,200 <250 <5 0 8 0 <0 5 1 49 13 <br /> ugq micrograms per liter,equivalent to parts per billion,ppb <br /> Concentrations determined by EPA Methods 5030,8015m and 8020 <br /> Advanced GeoEnvrronmental,Inc <br />