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TABLE 4 Page 1 of 13
<br /> GROUNDWATER DATA
<br /> SHELL-BRANDED SERVICE STATION
<br /> 2494 EAST FREMONT STREET
<br /> STOCKTON,CALIFORNIA
<br /> MTBE MTBE 1,2- Depth to GW SPH
<br /> Well ID Date TPHg B T E X 8020 8260 TBA DIPS ETBE TAME DCA EDB Methanol Ethanol TOC Water Elevation Thickness
<br /> (,ag/L) (,ag/L) (pg/L) (,ag/L) (pg/L) (PRE) (PNE) (,ug/L) (PNE) (PRE) (P91L) (pg/L) (,ag/L) (,ag/L) (pg/L) (ft MSL) (ft TOC) (ft MSL) (feet)
<br /> S-1 5/11/1998 - - - <2.0 - - - 21.33 49.82 -28.48 0.01
<br /> S-1 8/13/1998 - - - - - - - - - - - - - - - 21.33 48.50 -27.17 -
<br /> S-1 8/19/1998 200,000 5,000 18,000 3,000 18,000 <2500 - - - - 21.33 49.81 -28.48 -
<br /> S-1 11/23/1998 76,000 5,300 21,000 2,300 17,000 <500 - - - - - - - - - 21.33 48.55 -27.22 -
<br /> S-1 2/23/1999 72,800 2,970 15,400 2,140 16,800 <2000 - - - - - 21.33 46.29 -24.96 -
<br /> S-1 5/25/1999 96,300 2,070 9,750 1,550 15,500 <1250 - - - - - - - - - 21.33 44.21 -22.88 -
<br /> S-1 8/5/1999 86,600 2,420 12,100 1,880 15,000 <500 - - - - 21.33 45.34 -24.01 -
<br /> S-1 11/22/1999 120,000 2,700 14,000 3,000 21,000 2300 <200 <20000 <200 <200 <200 - - - <100000 21.33 47.70 -26.37 -
<br /> S-1 2/1/2000 62,000 3,000 15,000 2,400 19,000 <250 - - - - - - - 20.56 47.28 -26.72 -
<br /> S-1 2/18/2000 - - - - - - - - - - - - - - - 20.56 46.53 -25.97 -
<br /> S-1 5/3/2000 135,000 2,670 12,500 2,100 19,000 <1000 - - - - - - - 20.56 44.41 -23.85 -
<br /> S-1 8/2/2000 392,000 1,950 12,700 4,940 32,800 <1000 - - - - - - - - - 20.56 45.63 -25.07 -
<br /> S-1 11/20/2000 93,000 1,600 10,000 2,400 16,000 - <500 - - - - - - 20.56 47.67 -27.11 -
<br /> S-1 2/5/2001 15,400 153 912 260 1,860 <250 - - - - - - - - - 20.56 46.63 -26.07 -
<br /> S-1 5/14/2001 77,000 1,800 9,200 2,000 17,000 - <250 - - - - - - 20.56 46.29 -25.73 -
<br /> S-1 8/30/2001 93,000 1,700 11,000 2,300 15,000 - <500 - - - - - - - - 20.56 50.21 -29.65 -
<br /> S-1 11/28/2001 88,000 1,700 11,000 2,500 18,000 - <50 <500 <50 <50 <50 - <500 20.56 51.35 -30.79 -
<br /> S-1 2/18/2002 98,000 1,200 8,400 2,500 18,000 - <250 - - - - - - - - 21.23 50.04 -28.81 -
<br /> S-1 5/1/2002 83,000 980 6,400 3,000 18,000 - <250 - - - - - - - 21.23 49.65 -28.42 -
<br /> S-1 8/8/2002 93,000 1,300 8,900 2,400 15,000 - <250 - - - - - - - - 21.23 52.47 -31.24 -
<br /> S-1 10/28/2002 100,000 2,200 15,000 2,500 17,000 - <100 <1000 <100 <100 <100 540 350 <10000 <1000 21.23 54.64 -33.41 -
<br /> S-1 1/6/2003 85,000 2,200 14,000 2,200 15,000 - <500 - - - - - - - - 21.23 53.57 -32.34 -
<br /> S-1 5/14/2003 86,000 1,300 9,600 2,600 17,000 - <500 - - - - 350 - - - 21.23 51.55 -30.32 -
<br /> S-1 8/14/2003 220,000 2,300 16,000 3,500 25,000 - <100 <1000 <400 <400 <400 480 340 <500 <10000 21.23 53.72 -32.49 -
<br /> S-1 12/30/2003 95,000 1,900 16,000 3,300 26,000 - <50 <500 <200 <200 <200 430 190 <500 <5000 21.23 54.95 -33.72 -
<br /> S-1 2/5/2004 98,000 3,300 20,000 3,300 22,000 - <50 <500 <200 <200 <200 600 340 <500 <5000 21.23 54.17 -32.94 -
<br /> S-1 5/5/2004 68,000 1,700 10,000 2,300 16,000 - <50 <500 <200 <200 <200 460 270 <2000 <5000 21.23 53.04 -31.81 -
<br /> S-1 7/26/2004 91,000 1,600 10,000 2,500 17,000 - <50 <500 <200 <200 <200 370 170 <500 <5000 21.23 54.45 -33.22 -
<br /> S-1 11/10/2004 87,000 3,000 14,000 2,300 13,000 - <100 <1000 <400 <400 <400 400 210 <500 <10000 21.23 56.77 -35.54 -
<br /> S-1 2/21/2005 88,000 1,900 11,000 2,100 15,000 - <100 <1000 <400 <400 <400 460 220 <500 <10000 21.23 54.98 -33.75 -
<br /> S-1 6/30/2005 92,000 1,400 9,900 3,100 22,000 - <100 <1000 <400 <400 <400 410 250 <500 <10000 21.23 52.00 -30.77 -
<br /> S-1 8/18/2005 260,000 1,400 11,000 4,400 29,000 - <100 <1000 <400 c <400 c <400 440 300 <500 <10000 c 21.23 53.22 -31.99 -
<br /> S-1 12/29/2005 26,000 770 4,000 890 5,300 - <100 <1000 <400 <400 <400 210 150 <500 <10000 21.23 53.02 -31.79 -
<br /> S-1 3/6/2006 94,000 900 5,900 3,600 24,100 - <100 <1000 <200 <200 <200 <50 <100 <100 <100 21.23 50.84 -29.61 -
<br /> S-1 6/27/2006 49,000 760 3,700 1,400 13,000 - <25 <250 <100 <100 <100 190 120 <4000 m,l,n <2500 21.23 47.01 -25.78 -
<br /> S-1 9/26/2006 53,000 680 2,200 1,400 12,000 - 26 <250 <100 <100 <100 240 110 <25001,m <2500 21.23 47.65 -26.42 -
<br /> S-1 12/11/2006 58,000 650 1,800 1,400 14,000 - 32 <250 <100 <100 <100 280 80 <10000 m <2500 21.23 46.98 -25.75 -
<br /> CRA240797(18)
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