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_ I <br /> TABLE 4 <br /> Analytical Results of Pump-and-Treat Grab Ground Water Samples (µg11) <br /> Chapin Bros , Inc - 1766 Monte Diablo Avenue, Stockton, California <br /> EPA 8015M EPA 8020/8260 <br /> ample I D Date gallons Ethyl TPH-g TPH d Benzene Toluene Xylene MTBE <br /> benzene <br /> 05-30-02 226,147 6,800 -- 300 23 270 170 <50 <br /> 09-19-02 1,028,683 8,100 -- 320 31 130 490 <100 <br /> 10-15-02 1,200,093 6,100 -- 280 21 370 390 <50 <br /> 02-17-03 1,835,317 6,100 -- 210 18 140 180 <50 <br /> 03-24-03 1,982,381 4,900 150 9 5 160 160 <5 0 <br /> 04-15-03 2,139,002 2,200 — 58 2 4 68 55 -- <br /> EW-2 05-21-03 2,312,165 4,600 — 150 74 100 92 -- <br /> 06-15-03 2,193,675* 3800 — 130 96 130 93 -- <br /> 07-21-03 2,290,214 2700 — 80 11 47 32 -- <br /> 08-19-03 2,374,652 5100 — 900 28 31 90 45 <br /> 09-16-03 2,459,705 1,300 -- 32 2 3 38 35 <0 5 <br /> 10-18-03 2,557,662 4,700 — 77 3 3 30 83 <0 5 <br /> 11-17-03 2,566,681 570 — 31 17 33 23 450* <br /> 11-24-03 2,579,560 910 — 90 11 72 93 36* <br /> 12-15-03 2,709,959 2,400 39 8 1 11 45 <0 5* <br />