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0 TA& I
<br /> GROUNDWATER DATA '
<br /> THRIFTY OIL STATION #172, STOCKTON, CA
<br /> DATE ANALYTICAL,PARAMETERS DEPTH TO DEPTH TO PRODUCT CASING GROUNDWATER
<br /> SAMPLED TPH BEN EtVE TOLUENE EthylBenzene XYLENE MTBE GROUNDWATER PRODUCT THICKNESS ELEVATION ELEVATION
<br /> 09/0 091L) (uP�) (U91L) fU�) {uglL} /,feet) (feet)
<br /> } (feet) (feet) (fret)
<br /> 05/27/98 54,000 13,000 6,000 75 9,900 2 300 4060 NP 000 13 18 -2742
<br /> 08/26/98 28,000 4,500 900 <0 3 3 500 2,100 3630 NP 000 13 18 -23 12
<br /> 11/24/98 23,000 5,400 1,100 <6 4,400 <20 3460 NP 000 1318 -2142
<br /> 02/18/99 22 000 5,000 1,200 <6 5,200 1,900 32 10 NP 000 13 18 -1892
<br /> 05/20/99 34 000 6 000 1,300 <30 6,000 1 700 3255 NP 000 13 18 -1937
<br /> 08/18/99 140 000 28 000 32 000 1,500 17,000 1,100 3563 NP 000 13 18 -2245
<br /> 11/10/99 28,000 4,700 4300 <60 2,900 1,200 37 16 NP 000 13 18 -23 98
<br /> 02/23/00 5,000 1,440 1,240 <12 1,420 ' 1,280/1,110 3869 NP 000 13 18 -25 51
<br /> 05/10/00 2,140 19 <0 25 <025 19 1,350 1065 NP 000 13 18 -1747
<br /> 08/18/00 <50 <5 <5 <5 <5 1,460 3483 NP 000 13 18 -2165
<br /> 11/09100 <50 <0 18 <014 <018 <0 26 772 3562 NP 000 13 18 -2244
<br /> 02/15/01 <50 <0 3 <0 2 <0 2 <D4 976 3182 NP 000 13 18 -1864
<br /> 05/17/01 SAMPLE BROKEN 3869 NP 000 13 18 -2551
<br /> 05/24/01 239,000 55,800 73 600 10 000 58,600 2,900 - - 13 18 -
<br /> 08/16/01 151,000 6,880 8,930 927 4,910 367 4023 NP 000 13 18 -2705
<br /> 11/08/01 9,100 341 44 J <2 0 <4 0 5,570 4059 NP 000 13 18 -2741
<br /> 02/21/02 141,000 17,500 26,100 2,850 15,300 932 3751 NP 000 13 18 -2433
<br /> 05/22/02 127,000 18,300 25,100 1,530 11,500 786 31 85 NP 000 13 18 -1867
<br /> 08/14/02 49,900 12,100 10,500 <17 8,800 783 3256 NP 000 13 18 -1938
<br /> 11/20/02 5,170 190 18 179 421 32 3409 NP 000 13-18 -2091
<br /> 02/12/03 <IS <0 22 <032 <031 <0 4 31 3256 NP 000 13 18 -1938
<br /> 05/21/03 61,700 9,820 9,000 158 J 4,690 4,500 3947 NP 000 13 18 -2629
<br /> 08/20/03 144,000 2,600 2,910 <15 5 4,360 39,500 3852 NP 000 13 18 -2534
<br /> 11/26/03 38 600 5,670 8,150 397 3,180 127 3926 NP 000 13 18 -2608
<br /> 02/05/04 61,000 3,550 7,000 5,380 31,400 156 3793 NP 000 13 18 -2475
<br /> 05/05/04 62,800 1,630 7 860 592 6,380 25 100 3672 NP 000 13 18 -23 54
<br /> 08/11/04 193 000 24,200 30,400 1,480 12 200 941 4006 NP 000 13 18 -2688
<br /> 09/30/04 229 000 31 000 33,900 3,400 18 200 736 4090 NP 000 13 18 -2772
<br /> 11/10/04 221 000 26 500 28,800 2,070 13 000 776
<br /> 4009 NP 000 13 18 -2691
<br /> 02/22/05 23,700 814 727 577 2,180 5,110 3640 NP 000 13 18 -2322
<br /> 05/11/05 124,000 33,100 25 600 1,900 13,000 865 35 10 NP 000 13 18 -21 92
<br /> 08/24/05 37,800 13,100 9,990 571 3,230 779 3641 NP 000 13 18 -2323
<br /> 11/09/05 37,100 11,700 9,320 460 2,400 367 3948 NP 000 13 18 -2630
<br /> 172TABI XLS Page 12 of 13 12/8/2005
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