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WELL CONCENTRATIONS
<br /> Shell-branded Service Station
<br /> 6131 Pacific Avenue
<br /> Stockton, CA
<br /> MTBE L8260r- GWTOC
<br /> Depth t0 Depth to SPH DO
<br /> Well ID Date TPPH B T E X 8020 Water SPH Elevation Thickness Reading
<br /> u IL u IL uglL ug/L u IL u IL MSL ft ft MSL ft m
<br /> VEW-2 07/29/1998 10,000 4,600 21,000 1,800 26,000 <1,000 ND NA 3510 NA NA NA NA
<br /> VEW-2 11/23/1998 120,000 3,600 17,000 1,600 24,000 <1,000 <200 NA 3441 NA NA NA NA
<br /> VEW-2 02/24/1999 75,000 2,400 14,000 1,400 14,000 310 <100 NA 3247 NA NA NA NA
<br /> VEW-2 05/13/1999 117,000 3,130 14,100 1,500 22,000 <1,250 <125 NA 3139 NA NA NA NA
<br /> VEW-2 08/20/1999 110,000 3,240 15,600 1,700 19,100 <2,500 636 NA 3448 NA NA NA NA
<br /> VEW-2 11/02/1999 115,000 4,130 25,200 <250 23,200 <1,250 NA NA 3423 NA NA NA NA
<br /> VEW-2 02/03/2000 88,900 3,090 10,300 1,850 20,400 <500 NA NA 3255 NA NA NA NA
<br /> VEW-2 05/15/2000 112,000 3,050 13,000 2,200 20,500 <500 NA NA 3195 1 NA NA NA NA
<br /> VEW-2 1 08/16/2000 73,400 3,200 9,770 1,900 17,900 <2,000 228 NA 3512 NA NA NA NA
<br /> VEW-2 11/21/2000 68,200 2,530 8,350 1,950 14,600 <500 NA NA 3318 NA NA NA NA
<br /> VEW-2 03/16/2001 84,200 7,480 12,600 1,680 19,300 <2,500 NA NA 3172 NA NA NA NA
<br /> VEW-2 05/11/2001 130,000 9,900 14,000 2,000 23,000 NA <500 NA 3173 NA NA NA NA
<br /> VEW-2 08/30/2001 100,000 2,600 3,900 2,000 18,000 NA <25 NA 3461 NA NA NA NA
<br /> VEW-2 12/10/2001 82,000 2,400 1 5,000 2,700 16,000 NA <25 1314 3373 NA -2059 NA NA
<br /> VEW-2 02/05/2002 170,000 9,200 14,000 2,200 27,000 NA <2,500 1314 3161 NA -1847 NA NA
<br /> VEW-2 06103/2002 90,000 2,300 3,000 2,600 18,000 NA <500 1314 3255 NA -1941 NA NA
<br /> VEW-2 09/03/2002 100,000 2,900 3,900 2,100 21,000 NA <50 1314 3549 NA -2235 NA NA
<br /> VEW-2 11/07/2002 68,000 1,200 660 2,200 14,000 NA <250 1314 36 13 NA -2299 NA NA
<br /> VEW-2 02/21/2003 82,000 1,900 1,500 2,600 16,000 NA <250 1314 3505 NA -2191 NA NA
<br /> VEW-2 03/14/2003 NA NA NA NA NA NA NA 1314 3470 NA -21 56 NA NA
<br /> VEW-2 1 05107/2003 82,000 1,600 1,100 3,000 16,000 NA <250 13 14 34 24 NA -2110 NA NA
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