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TABLE I
<br /> GROUNDWATER DATA
<br /> THRIFTY OIL STATION#172, STOCKTON, CA
<br /> /}ATE ANALYTICAL PARAMETERS DEPTH TO DEPTH?TO PRODUCT CASING, GROUNDWATER
<br /> SAMPLED TPII BENZENE 14LUENE $f1 ylBenzent XYLENE MTBE GROUNDWATER PRODUCT THICKNESS ELEVATION ELEVATION
<br /> {, ) (40 (ng L) ) tug/L) 09t) Met) (feet) (feed) (feet) (feet)
<br /> 02/25/97 1,700 11,000 14,000 1,300 7,100 52,000 4040 NP 000 13 18 -2722
<br /> 05/28/97 63,000 13,000 16,000 250 8,000 <2500 4380 NP 000 13 18 -3062
<br /> 08/19/97 86,000 20,000 26,000 2,300 14,000 1,600 41 65 NP 000 13 18 -2847
<br /> 11/26/97 63,000 22,000 24,000 <150 11,000 2,300 4065 NP 000 13 18 -2747
<br /> 02/18/98 130,000 20,000 15,000 <60 13,000 3,500 39 10 NP 000 13 18 -2592
<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 <03 3,500 2,100 3630 NP 000 13 18 -23 12
<br /> 1I/24/98 23,000 51400 1,100 <6 4,400 <20 3460 NP 000 13 18 -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 35 63 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 -2398
<br /> 02/23/00 5,000 1,440 1,240 <12 1,420 *1,28011,110 3869 NP 000 13 18 -2551
<br /> 05/10/00 2,140 19 <0 25 <0 25 19 1,350 3065 NP 0 00 1 13 18 -1747
<br /> MONITORING WELL# VW-1
<br /> 02/18/99 570 <0 3 <0 3 <0 3 is 430 3140 NP 000 - -
<br /> 05/20/99 - - _ _ _
<br /> 08/18/99 - - - DRY
<br /> 11/10/99 -
<br /> 02/23/00 - - - - - DRY - -
<br /> 05/10/00 - - DRY _
<br /> mvngonxt We -VW-2B
<br /> 05/20/99 230,000 38,000 42,000 1 3,200 25,000 7,100 3170 NP 000
<br /> 08/18/99 - _ _ _
<br /> 11/10/99 - -
<br /> 02/23/00 -
<br /> 05/10/00 - -
<br /> 172TABI XLS Page 8 0f 10 6119100
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