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<br /> - - - TABLE 4 =` _
<br /> ANALYTICAL RESULTS OF HISTORICAL GROUND WATER SAMPLES _
<br /> TPH and BTEX -_
<br /> i
<br /> _ West Clay Property _
<br /> 639 West Clay Street, Stockton, California
<br /> (µg/1)
<br /> Weil 1D Depth to TPH as _ TPH as _ _ Ethyl-- - �`
<br /> Date MTBE Benzene Toluene Xylenes W
<br /> ,(Screen tntema[ 4 ound water Gasoline D1esc1 benzene '
<br /> MW-1 continued 08/26/04 21 40 13,000 1,800 NA 2,900 180 1,600 1,554 _
<br /> ._ (40-60) 11/19/04 2199 11,000 4,800 NA 2,000 110 620 555 - r
<br /> MW-2 04/04/94 3644 81,000 11,600K NA 3,400 10,400 3,200 4900
<br /> (40-60) 12/16/94 37 83 NS NS NS NS -NS NS NS
<br /> 03/31/95 3118 NS NS NS NS NS NS NS
<br /> - - 10/31/95 2934 35,000 - NA NA 2,100 - 4,200 1,000 13,500 c
<br /> 05/06/96 2497 NS NS NS NS NS NS NS
<br /> 05/27/97 21 42 17,000 2,000 58 1,100 1,500 230- 2,200 `
<br /> 11/17/97 2236 18,000 2,300 <70 1,000 1,600 370 3,300 =
<br /> 02/26/98 1746 18,000 2,900 62 1,700 880 <0 5 3,100 _
<br /> _ 08/31/98 1751 47,000 4,600 <200 5,100 5,600 2,100 7,700
<br /> 02/09/99 17 52 21,000 760 <80 1,800 2,000 720 • 3,000
<br /> 05/28/99 1703 21,000 3,300 <50 2,500 1,900 620 3,700
<br /> 10/28/99 1918 19,000 2,700 <200 2,000 1,400 290 3,200
<br /> 01/25/00 1890 18,000 1,700 <10 2,000 1,500 620 2,800
<br /> 07/12/00 1734 22,000 2,000 ND<200 2,100 1,800 660 3,000
<br /> 12I1810 1893 22,000 1,700 <200 2,300 1,800 600 2,500
<br /> 03/13/01 1771 8,300 1,000 <60 970 440 270 270
<br /> 05/30/01 1822 6,400 990 <35 710 360 210 620
<br /> 08/28/01 19 54 14,000 2,500 <20 1,400 890 810 2,000
<br /> 11/28/01 2020 9,300 1,500 <150 440 180 610 1,200 '
<br /> 02/27/02 1847 7,500 990 <10 190 130 260 500
<br /> 05/28/02 1881 7,500 1,800 <100 360 220 - 420 770
<br /> 09/03/02 2018 5,000 1,400 <100 230 170 410 290
<br /> 12/26/02 2028 2,300 770 NA 35 15 <1 0 160
<br /> 03/14/03 1963 21,000 2,900 NA 950 300 1,300 2,200
<br /> 06/19/03 19 52 11,000 19 NA 770 280 1,500 3,080 ;
<br /> 09/12/03 2043 29,000 1 30 1 NA 1,100 1560 2,300 4,900
<br /> - Advanced GmEnvtironmental,Inc
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