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Table 4
<br /> Summary of Groundwater Extraction Well Anaytical Results
<br /> Chapin Brothers Investments, Inc
<br /> ' 1766 Monte Diablo Avenue
<br /> Stockton, California
<br /> Page 2 of 3
<br /> Well I D Date Sampled TPH-g Benzene Toluene Ethyl- Total MTBE
<br /> ' benzene Xylenes
<br /> 5/17/2004 4,500 75 17 30 50 <0 5**
<br /> 6/23/2004 2,900 96 44 63 59 <0 5
<br /> ' EW-3 5/30/2002 27,000 1,600 410 1300 5,400 <500
<br /> 9/19/2002 12,000 670 44 <10 1,600 <100
<br /> 10/15/2002 11,000 850 110 750 1,600 <100
<br /> 2/17/2003 11,000 340 70 310 1,100 <50
<br /> 3/24/2003 14,000 1,200 140 240 2,100 <5 0
<br /> 4/15/2003 11,000 840 91 <10 1,400
<br /> 5/21/2003 14,000 740 100 420 1,700
<br /> 6/15/2003 9,900 700 110 26 1,900 --
<br /> ' 7/21/2003 7,000 180 32 <0 5 880 --
<br /> 8/19/2003 23,000 440 60 7 8 1,400 70
<br /> 9/16/2003 3,100 130 16 21 340 <0 5
<br /> 10/18/2003 5,200 240 30 170 700 <0 5
<br /> 11/17/2003 5,300 1,400 75 790 900 230"
<br /> 11/24/2003 2,100 30 16 270 560 180*
<br /> 1 12/15/2003 7,100 550 52 22 910 57*
<br /> 1/24/2004 13,000 860 47 330 480 <0 5
<br /> 2/18/2004 16,000 520 42 370 760 <0 5
<br /> 05/17/2004 11,000 330 18 260 790 <0 5**
<br /> 6/23/2004 8,300 260 44 110 890 4 1**
<br /> VW-6 5/30/2002 19,000 520 330 1,200 3,800 <500
<br /> 10/15/2002 13,000 180 100 770 1,700 <250
<br /> 2/17/2003 13,000 100 87 530 1,400 <50
<br /> 3/24/2003 10,000 62 41 450 760 <10
<br /> 4/15/2003 9,400 26 41 460 830
<br /> 5/21/2003 7,100 130 <5 0 340 470
<br /> ' 6/15/2003 5,800 63 31 290 410 ==
<br /> 7/21/2003 5,200 31 12 190 390
<br /> 8/19/2003 8,100 26 91 260 560 10
<br /> ' 9/16/2003 1,000 54 22 70 84 <0 5
<br /> 10/18/2003 5,800 31 71 110 240 <0 5
<br /> 11/17/2003 7,600 290 20 190 550 3,000*
<br /> ' 11/24/2003 2,200 66 21 320 450 11*
<br /> 12/15/2003 6,200 51 29 330 400 40*
<br /> ' 1/24/2003 7,600 18 39 140 190 8 3
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