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0TAPI <br /> GROUNDWATER DATA <br /> THRIFTY OIL STATION #171, STOCKTON, CA <br /> DATE ANAL171CAL PARAMETERS DEPTH TO DEPTH TO PRODUCT CASING GROUNDWATER <br /> SAMPLED TPH-g BENZENE TOLUENE EthylBenzene XYLENE MTBE GROUNDWATER PRODUCT THICKNESS ELEVATION ELEVATION <br /> (u�) (ug/L) (u8/-) (nom) 0911) (u�) (feet) (feet) (feet) (feet) (feet} <br /> 08/23/00 99 100 5 350 1 800 904 2 770 25 100 39 75 NP 000 1468 2507 <br /> 11/15/00 21 300 6 370 1 510 261 1 450 10 400 42 23 NP 000 2468 -27 55 <br /> 02/14/01 24 700 4 740 194 <02 1 030 17 700 3961 NP 000 2468 2493 <br /> 05/15/01 12 000 <0 3 <02 <02 <04 34 000 3961 NP 000 1468 -2493 <br /> 08/15/01 11 900 <3 0 <20 <20 <40 30 900 4069 NP 000 1468 2601 <br /> 11/06/01 13 000 132 165 <20 76 23 200 45 80 NP 000 1468 31 12 <br /> 02/13/02 101 000 7 260 14 100 2 950 16 300 23 800 4280 NP 000 1468 28 12 <br /> 05/07/02 30 500 142 <20 <20 3 830 10 600 41 52 NP 000 1468 2684 <br /> 08/07/02 6,570 <08 <18 <17 <40 14 100 46 50 NP 000 1469 31 82 <br /> 11/13/02 166 000 12 700 8 800 3 300 24 600 40 400 4905 NP 000 1468 3437 <br /> 02/19/03 59,000 5 250 362 4 410 8 200 33 700 4903 NP 000 1468 34 35 <br /> 05/14/03 17 800 213 <16 <15 5 l 650 21 700 4403 NP 000 1468 2935 <br /> 08/12/03 23 400 <5 5 <80 <7 75 <10 17 000 48 17 NP 000 1469 3349 <br /> MONITORING WELL#MW 6 Screen Interval = 65 to 90 eet <br /> 11/20/92 2 400 90 72 100 420 <br /> 03/31/93 14 000 1 400 1 100 450 1 600 71 08 NP 000 9458 2350 <br /> 06/23/93 1,600 120 93 50 160 69 12 NP 000 94 58 2546 <br /> 09/13/93 32 000 3 700 3 400 1 300 7 700 71 95 NP 000 94 58 2263 <br /> 12/13/93 44 000 2 500 5 900 1 500 5 400 7240 NP 000 94 58 22 18 <br /> 03108/94 150 65 36 11 80 66 85 NP 000 9458 27 73 <br /> 06/07/94 4,900 660 360 15 440 6440 NP 000 9458 30 18 <br /> 09/07/94 150 000 16 000 7 300 1 900 12 000 67 62 NP 000 9458 2696 <br /> 06/08/95 58 000 990.0 9 500 140 7 500 - - - <br /> 08/16/95 110,000 18 000 22 000 l 100 13 000 6097 NP 000 9458 3361 <br /> 11/13/95 5 600 1 400 1 100 150 870 6096 NP 000 9458 3362 <br /> 02/13/96 ND ND ND ND ND 6098 NP 000 9458 3360 <br /> 05/14/96 170 3 7 096 065 13 51 38 NP 000 9458 43 20 <br /> 08/28/96 550 1 34 71 l 6 79 *45 5460 NP 000 9458 3998 <br /> 11/14/96 <50 1 <0 3 <03 <03 078 *<20 53 30 NP 000 9458 4128 <br /> 02/12/97 SAMPLES LOST 4990 NP 000 9458 4468 <br /> 05/14/97 <50 <0 3 <03 <0 3 <05 *<20 55 65 NP 000 9458 3893 <br /> 08/13/97 <50 <03 <03 <0 3 <05 <20 <br /> 11/13/97 - - - <br /> 171 TAB 1 XLS Page S of 11 10/20/03 <br />