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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 1 D Date gallons Ethyl
<br /> TPH-g TPH d Benzene Toluene benzene Xylene MTBE
<br /> Pre Remediation-wells
<br /> 05-30-02 226,147 940 -- 58 2 1 55 24 <5 0
<br /> 09-19-02 1,028,683 710 -- 1 1 <0 5 <0 5 66 <5 0
<br /> 10-15-02 1,200,093 1,500 -- 20 19 28 33 <17
<br /> 02-17-03 1,835,317 7,700 48 91 320 460 <25
<br /> 03-24-03 1,982,381 9,600 35 <12 750 640 <12
<br /> 04-15-03 2,139,002 2,900 - 15 41 50 260 --
<br /> 05-21-03 2,312,165 4,000 - 16 <5 0 150 300 --
<br /> 06-15-03 2,193,675* 6,700 - 32 88 610 470 -
<br /> 07-21-03 2,290,214 6,400 - 20 39 420 260 --
<br /> 08-19-03 2,374,652 930 - 83 45 33 26 120
<br /> EW-1 09-16-03 2,459,705 600 -- 42 <0 5 <0 5 29 <0 5
<br /> 10-18-03 2,557,662 500 - 10 <0 5 42 55 <0 5
<br /> 11-17-03 2,566,681 320 - 15 14 78 57 100*
<br /> 11-24-03 2,579,560 410 - 12 8 9 41 77*
<br /> 12-15-03 2,709,959 910 - 95 39 34 27 42*
<br /> 01-26-04 2,820,731 1,800 -- 44 <0 5 18 89 <0 5
<br /> 02-18-04 2,764,829 1,900 -- 29 <0 5 19 11 <0 5
<br /> 05-17-04 3,056,982 6,800 -- 34 12 400 250 <0 5
<br /> 06-23-04 3,153,475 4,300 -- 10 58 560 330 <0 5
<br /> 07-22-04 3,244,376 5,300 -- 7 1 16 290 100 <0 5
<br /> 08-19-04 3,325,604 6,100 -- 92 27 230 87 <0 5
<br /> 12-18-04 3,481,830 3,600 -- 35 72 95 63 <0 5
<br /> a1-ZG�os 750o g,o 7, 370 Z < '5
<br /> Advanced GeoEnvi ron mental,Inc
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