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- <br /> TABLE 1 <br /> GROUNDWATER DATA <br /> THRIFTY OIL STATION x/171, STOCKTON, CA <br /> DATE ANALYTICAL PARAMETERS DEQ TO DEPTH TO PRODUCT CASING GROUNDWATER <br /> SAMPLED I TPH-g 1 BENZENE TOLUENE 18t1ty1Benzene XYLENE MTBE GROUNDWATER PRODUCT THICKNESS ELEVATION ELEVATION <br /> (ug(L) (,)8/L) (um) t ) (ugtL) (.g(L) ( t (feel} Meet) (feet) (feet) <br /> MONITORING WELL#MW S <br /> 11/20/92 - - <br /> U3131193 25 000 2 700 - 6889 NP 000 93 36 2447 <br /> 06/23/93 2,800 100 4 600 430 6,300 6825 NP 000 93 36 2511 <br /> 09/13/93 - 110 53 270 7173 NP 000 93 36 2163 <br /> 12/13/93 72 10 SHEEN 000 9336 21 26 <br /> 03/08/94 6543 SHEEN 000 9336 2793 <br /> 06107!94 6305 SHEEN 000 93 36 3031 <br /> 09/07/94 6624 SHEEN 000 93 36 27 12 <br /> 08/16/95 59 08 SHEEN 000 9336 3428 <br /> 11/13/95 59 000 1 5 106 13 000 1 500 11,000 5908 NP 000 9336 3428 <br /> 02/13/96 20 000 3 200 3,300 340 1 800 5911 NP 000 9336 3425 <br /> 05/14/94 68 000 12 000 18,000 2 300 13 000 4942 NP 000 93 36 4394 <br /> 08/28/96 56 000 900.0 8,500 310 6 600 *9,900 5290 NP 000 93 36 4046 <br /> 11/14/96 14,000 1900 99 <3 2 700 *8,500 51 65 NP 000 93 36 4171 <br /> 02/12/97 SAMPLES LOST - 4820 NP 000 93 36 4516 <br /> 05/14/97 29,000 45 3 400 <15 2 600 *17,000 55 49 NP 000 9336 37 87 <br /> 08/13/97 27,000 5 000 1 900 <6 2 300 15 000 <br /> 11/13/97 24 000 7 500 1 100 <0 3 2 400 16 000 5020 NP 000 93 36 43 16 <br /> 02/11198 20 000 4200 250 <15 1 300 11 000 4720 NP 000 93 36 46 16 <br /> 05/28/98 4 600 <03 <0 3 <0 3 <05 8 700 49 10 NP 000 93 36 4426 <br /> 08/12/98 130,000 17 000 9 500 1,000 8 900 26,000 3960 NP 000 93 36 53 76 <br /> 11/10/98 31 000 7 000 500 <30 3 900 24 000 5205 NP 000 9336 4131 <br /> 02/25/99 13 000 <3 <3 <3 <5 13 000 3798 NP 000 1468 -2330 <br /> 05/14/99 15 000 11 <0 3 <0 3 0 83 1 600 4276 NP 000 1468 2809 <br /> 08/18/99 260 <03 <0 3 <0 3 <05 240 3822 NP 000 1468 23 54 <br /> 11/16/99 43,000 6 600 910 90 4 900 26 000 4044 NP 000 1468 2576 <br /> 02/09/00 28 000 5 800 440 <30 2 400 18 000 39 15 NP 000 1468 -2447 <br /> 05/17/00 130 <0 25 <0 25 <0 25 <05 19 900 4376 NP 000 1468 -2908 <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 26J 1 450 10 400 4223 NP 000 1468 -2755 <br /> 02/14/01 24 700 4 740 194 <0 2 1,030 17 700 3961 NP 000 1468 2493 <br /> 05/15/01 12 000 <0 3 <02 <0 2 <04 34 000 39 61 NP 000 1469 -2493 <br /> 08/15/01 11 900 <30 <20 <2 0 <40 30 900 4069 NP 000 1 1468 -2601 <br /> 11f06f01 13,000 132 165 <2 0 76 23 200 45 80 NP 000 1468 -31 12 <br /> 171 TAB 1 XLS Page 4 of 10 3/20/03 <br />