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WELL COMENTRATIONS
<br /> Shell-branded Service Station
<br /> 6131 Pacific Avenue
<br /> Stockton, CA
<br /> MTBE MTBE Depth to Depth to GW SPH D
<br /> Well ID Date TPPH B T E X 8020 8260 TOC Water SPH Elevation Thickness Reading
<br /> (u/L (u/L (u/L (u/L (u/L u /L u IL MSL ft ft MSL ft m
<br /> MW-4 10/10/1997 6,800 1,900 990 150 430 170 57 10027 4222 NA 5805 NA NA
<br /> MW-4 02/10/1998 92,000 22,000 17,000 2,100 5,100 2,500 260 10027 3783 NA 6244 NA NA
<br /> MW-4 05/20/1998 70,000 17,000 12,000 1,400 3,500 <2,500 ND 10027 3485 NA 6542 NA NA
<br /> MW-4 07/29/1998 23,000 8,800 1,300 730 700 <500 170 10027 1 35 01 NA 6524 NA NA
<br /> MW-4 11/23/1998 44,000 12,000 7,200 970 2,300 <1,000 160 10027 V Y4 42 NA 6585 NA NA
<br /> MW-4 02/24/1999 49,000 12,000 8,000 990 2,800 1,300 180 10027 3255 NA 6772 NA NA
<br /> MW-4 05/13/1999 41,800 8,040 5,040 726 1,880 <1,000 154 10027 3221 NA 6806 NA NA
<br /> MW-4 08/2011999 9,150 2,530 700 228 279 <250 672 10027 3360 NA 6667 NA NA
<br /> MW4 11/02/1999 19,800 6,980 3,450 577 1,160 584 NA 10027 3393 NA 6634 NA NA
<br /> MW-4 02/03/2000 18,000 5,440 2,280 565 1,130 <250 NA 10027 3257 NA 6770 NA NA
<br /> MW-4 1 05/15/2000 15,300 4,130 710 1 390 573 660 51 6a 10027 31 29 NA 6898 NA NA
<br /> MW-4 08/16/2000 4,540 1,830 <20 0 254 <20 0 <200 546 10027 3439 NA 6588 NA NA
<br /> MW-4 11/21/2000 4,710 1,500 <20 0 266 130 206 34 4a 10027 3292 NA 6735 NA NA
<br /> MW-4 03/16/2001 1,570 308 760 117 168 114 184 10027 31 14 NA 6913 NA NA
<br /> MW-4 05/11/2001 1,200 70 1 2 110 1 7 NA 13 10027 31 20 NA 6907 NA NA
<br /> MW-4 08/30/2001 420 21 <0 50 1 30 33 NA 74 10027 3415 NA 6612 NA NA
<br /> MW-4 12/10/2001 740 33 073 53 12 NA 59 1265 3356 NA -2091 NA NA
<br /> MW-4 02/05/2002 610 30 12 34 20 NA 68 1265 3275 NA -2010 NA NA
<br /> MW-4 06/03/2002 260 64 053 99 <0 50 NA 76 1265 3236 NA -1971 NA NA
<br /> MW-4 09/03/2002 100 099 <0 50 <0 50 <0 50 NA 86 1265 3534 NA -2269 NA NA
<br /> MW-4 11/07/2002 260 28 <0 50 18 067 NA 11 1265 36 02 NA -2337 NA NA
<br /> MW-4 02/21/2003 140 47 <0 50 086 096 NA 18 1265 3463 NA -21 98 NA NA
<br /> MW-4 03/14/2003 NA NA NA NA NA NA NA 1265, 3433 NA -2168 NA NA
<br /> MW-4 05/07/2003 310 18 073 60 1 5 NA 20 1265 3381 NA -21 16 NA NA
<br /> MW-4 08/26/2003 <50 <0 50 <0 50 <0 50 <1 0 NA 19 1265 1776 78 NA -2383 NA NA
<br /> MW-4 11!24!2003 110 082 <0 50 <0 50 <1 0 NA 35 12 85 7 0 NA -2437 NA NA
<br /> MW-5 10/10/1997 1 1,300 91 3 3 _1 30 65 12 ND 100 25 1 41 53 NA 5872 NA NA
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