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TA 1 ~
<br /> GROUNDWATER DATA '
<br /> THRIFTY OIL STATION #172, STOCKTON, CA
<br /> DATE ANALYTICAL PARAMETERS DEPTH TO DEPTH TO PRODUCT CASIh10 GROUNDWATER
<br /> -[-SAMPLEI? TPH BENZENE TOLUENE EthylBeUene XYLENE MTBE GROUNDWATER PRODUCT THICKNESS ILEVA[IOPI ELEVATION
<br /> (ug/L) (ug L) 010j. (ug/ (0910 (ng/L) (feet} (Feet) (feet) (foot) (feet)
<br /> 06/03/92 1,100 34 ND ND ND 5606 NP 000 1220 -4386
<br /> 08/05/92 700 66 17 ND 47 5740 NP 000 1220 -4520
<br /> 11/24192 1,400 720 69 ND 120 - 5705 NP 000 1220 -4485
<br /> 02/24/93 9 700 1,800 790 210 1,000 53 75 NP 000 1220 -4155
<br /> 05/20/93 35,000 8,000 7,400 290 6,200 - 5285 NP 000 1220 -4065
<br /> 09/09/93 20 000 3,200 1 000 400 2,300 5483 NP 000 1220 -4263
<br /> 11/30/93 8,000 1,400 270 150 610 - 5258 NP 000 1220 -4038
<br /> 02/23/94 63,000 4,600 3 600 1,400 5,900 - 5833 NP 000 1220 -46 13
<br /> 05/31/94 100 000 9,200 11 000 3,000 13,000 - 4772 NP 000 1220 -35 52
<br /> 08/15/94 62,000 4,500 5200 1,000 6,700 - 5034 NP 000 1220 -3814
<br /> 11/08/94 570 26 43 94 35 - 51 12 NP 000 1220 -3892
<br /> 02/08/95 72,000 5,400 6,400 2,700 9,900 - 4829 NP 000 1220 -3609
<br /> 05/09/95 - - - - - - 4662 NP 000 1220 -3442
<br /> 08/08/95 73,000 4 600 7,100 2,400 12,000 - 4768 NP 000 1220 -3548
<br /> 02/29/96 26,000 1,200 3,000 1,600 6,000 *200 5746 NP 000 1220 -4526
<br /> 05/29/96 11 000 580 570 510 2,200 *75 51 30 NP 000 1220 -3910
<br /> 08/14/96 <1,000 1,200 830 1,500 4,700 *26,000 4350 NP 000 1220 -3130
<br /> 11126/96 <50 12 059 <0 3 <0 5 *61 42 12 NP 000 1220 -2992
<br /> 02/25/97 23 170 27 280 580 *2,700 3920 NP 000 1220 -2700
<br /> 05/28/97 310 47 12 1 1 59 *59 3755 NP 000 1220 -2535
<br /> 08/19/97 9,100 340 100 390 1200 49 4080 NP 000 1220 -2860
<br /> 11/26/97 110 19 <0 3 <0 3 <0 5 26 3900 NP 000 1220 -2680
<br /> 02/18/98 <50 <0 3 <03 <0 3 <0 5 46 3438 NP 000 1220 -22 18
<br /> 05/27/98 130 3 7 32 24 17 27 4200 NP 000 1220 -2980
<br /> 08/26/98 <50 <0 3 <0 3 <0 3 <0 5 40 3140 NP 000 1220 -1920
<br /> 11/24/98 <50 <03 <0 3 <0 3 <05 27 3380 NP goo 1220 -21 60
<br /> 02/18/99 <50 <0 3 <03 <0 3 <0 5 QO 28 15 NP 000 1220 -1595
<br /> 05/20/99 <50 <0 3 <0 3 <0 3 <0 5 <20 3070 NP 000 1220 -1850
<br /> 08/18/99 <50 <0 3 <0 3 <0 3 <0 5 <20 3437 NP 000 1220 -2217
<br /> 11/10/99 <50 <0 3 <0 3 <0 3 <0 5 <20 3745 NP 000 1220 -2525
<br /> 02/23/00 <50 <0 25 <0 25 <0 25 <0 5 *<51<5 3898 NP 000 1220 -2678
<br /> 05/10/00 <50 <0 25 <0 25 <0 25 <0 5 <5 3005 NP 000 1220 -1785
<br /> 08/18/00 <50 <5 <5 <5 <5 <5 3390 NP 000 1220 -21 70
<br /> 11/09/00 <50 <0 18 <0 14 <0 18 1 <0 26 1 <0 24 3438 NP 000 1220 -2218
<br /> 02/15/01 <50 1 <0 3 <0 2 <0 2 <0 4 <0 6 3097 NP 000 1220 1 -18 77
<br /> 172TAB1 XLS Page 2 of 13 12/8/2005
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