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<br /> TABLE 4
<br /> ANALYTICAL RESULTS OF PUMP-AND-TREAT GRAB GROUND WATER SAMPLES
<br /> Chapin Brothers Investments, Inc
<br /> 1766 Monte Diablo Avenue, Stockton, California
<br /> „ EPA 8015M EPA 8020/8260
<br /> Sample I D Date gallons Ethyl
<br /> TPH-g TPH-d Benzene Toluene benzene Xylene MTBE
<br /> 05-30-02 226,147 27,000 -- 1,600 410 1,300 5,400 <500
<br /> 09-19-02 1,028,683 12,000 670 44 <10 1,600 <100
<br /> 10-15-02 1,200,093 11,000 -- 850 110 750 1,600 <100
<br /> 02-17-03 1,835,317 11,000 -- 340 70 310 1,100 X50
<br /> 03-24-03 1,982,381 14,000 -- 1,200 140 240 2,100 <25
<br /> 04-15-03 2,139,002 11,000 - 840 91 <10 1,400 --
<br /> 05-21-03 2,312,165 14,000 - 740 100 420 1,700 --
<br /> 06-15-03 2,193,675* 9,900 - 700 110 26 1900 --
<br /> 07-21-03 2,290,214 7,000 - 180 32 <0 5 880 --
<br /> 08-19-03 2,374,652 23,000 - 440 60 78 1400 70
<br /> EW-3 09-16-03 2,459,705 3,100 -- 130 16 21 340 <0 5
<br /> 10-18-03 2,557,662 5,200 - 240 30 170 700 <0 5
<br /> 11-17-03 2,566,681 5,300 - 1400 75 790 900 230*
<br /> 11-24-03 2,579,560 2,100 - 30 16 270 560 180*
<br /> 12-15-03 2,709,959 7,100 - 550 52 22 910 57*
<br /> 01-26-04 2,820,731 13,000 -- 860 47 330 480 <0 5
<br /> 02-18-04 2,764,829 16,000 -- 520 42 370 760 <0 5
<br /> 05-17-04 3,056,982 11,000 -- 330 18 260 790 130*/<0 5
<br /> 06-23-04 3,153,475 8,300 -- 260 44 110 890 5 0*/4 1
<br /> 07-22-04 3,244,376 4,600 -- 46 16 230 420 16*112
<br /> 08-19-04 3,325,604 8,800 -- 400 83 360 240 27*/<0 5
<br /> 12-18-04 3,481,830 8,400 -- 170 22 230 490 44
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<br /> Advanced GeoE ,Inc
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