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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 Benzene Toluene benzene Xylene MTBE
<br /> 05-30-02 226,147 19,000 520 330 1,200 3,800 <500
<br /> 10-15-02 1,200,093 13,000 180 100 770 1,700 <250
<br /> 02-17-03 1,835,317 13,000 100 87 530 1,400 <50
<br /> 03-24-03 1,982,381 10,000 62 41 450 760 <10
<br /> 04-15-03 2,139,002 9,400 26 41 460 830 --
<br /> 05-21-03 2,312,165 7,100 130 <5 0 340 470 --
<br /> 06-15-03 2,193,675* 5800 63 31 290 410 --
<br /> 07-21-03 2,290,214 5200 31 12 190 390 --
<br /> 08-19-03 2,374,652 8100 26 91 260 560 10
<br /> 09-16-03 2,459,705 1,000 5 4 2 2 70 84 <0 5
<br /> 10-18-03 2,557,662 5,800 31 7 1 110 240 <0 5
<br /> VW-6 11-17-03 2,566,681 7,600 290 20 190 550 3000*
<br /> 11-24-03 2,579,560 2,200 66 21 320 450 11*
<br /> 12-15-03 2,709,959 6,200 51 29 330 400 40*
<br /> 01-26-04 2,820,731 7,600 18 3 9 140 190 8 3
<br /> 02-18-04 2,764,829 5,900 8 4 4 8 200 240 2 9
<br /> 05-17-04 3,056,982 6,200 10 12 160 240 <0 5
<br /> 06-23-04 3,153,475 2,800 8 5 4 260 280 10*/11
<br /> 07-22-04 3,244,376 6,600 8 8 9 1 140 210 7 0*16 0
<br /> 08-19-04 3,325,604 8,100 26 8 190 250 <0 5
<br /> 12-18-04 3,481,830 5,500 2 1 14 110 110 <0 5
<br /> 05-10-05 -- 8,000 13 7 3 340 1953 <1 0
<br /> 05-11-05 -- 6,400 8 2 8 7 380 260 <0 5
<br /> Notes
<br /> * Flow/totalizer Meter calibration adjustment TPH-d Total Petroleum Hydrocarbons as diesel
<br /> µgA micrograms per Mer TPH-g Total Petroleum Hydrocarbons as gasoline
<br /> MTBE methyl tertiary butyl ether * Analyzed by EPA Method 8260
<br /> Advanced GeoEnvironmental,Inc
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