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<br /> GROUNDWATER DATA '
<br /> THRIFTY OIL STATION#172, STOCKTON,CA
<br /> DATE ANALYTICAL PARAMETERS DEPTH TO DEPTH TO PRODUCT CASING GROUNDWATER
<br /> SAMPLED TPH BENZENE TOLUENE EthylBenzene XYLENE MTBE GROUNDWATER PRODUCT TIIICI NESS ELEVATION ELEVATION
<br /> (UgIL) (ug/L) (u131L) (MU LUA L) (ugly) (f"t) (Peet) (feet) ( t) (feet)
<br /> monitonn Well-MW--1
<br /> 06/03/92 200 15 5 7 07 79 5594 NP 000 1246 -4348
<br /> 08/05/92 ND 06 ND ND ND 5733 NP 000 1246 -4487
<br /> 11/24/92 ND ND ND ND ND 5690 NP 000 1246 -4444
<br /> 02/24/93 950 130 47 ND 170 53 60 NP 000 1246 -4114
<br /> 05/20/93 6,200 3,200 26 ND 1,200 5271 NP 000 1246 -4025
<br /> 09/09/93 300 ND 074 041 39 - 5472 NP 000 1246 -4226
<br /> 11/30/93 ND ND ND ND ND - 5442 NP 000 1246 -4196
<br /> 02/23/94 ND ND ND ND ND - 48 17 NP 000 1246 -3571
<br /> 05/31/94 16,000 2,900 1200 32 1,700 - 4760 NP 000 1246 -35 14
<br /> 08/15/94 25,000 220 640 69 1,200 - 5029 NP 000 1246 -3783
<br /> 11/08/94 79 1 6 ND ND 20 - 51 03 NP 000 1246 -3857
<br /> 02/08/95 ND ND ND ND ND - 4818 NP 000 1246 -3572
<br /> 05/09/95 ND ND ND ND ND - 4647 NP 000 1246 -3401
<br /> 07/11/95 WELL ABANDONED
<br /> Monitonn Welt-MW--2
<br /> 06/06/91 - 5,720 81810 1,670 8,860 - 5670 NP 000 1260 -44 10
<br /> 06/03/92 5,400 8,600 960 ND 1,140 - 56 15 NP 000 1260 -43 55
<br /> 08/05/92 1,600 1,500 320 ND 170 - 5753 NP 000 1260 -4493
<br /> 11/24/92 1,100 ND ND ND 43 - 57 15 NP 000 1260 -4455
<br /> 02/24/93 21,000 4,700 2,600 280 1,500 - 5388 NP 000 1260 -4128
<br /> 05/20/93 47,000 12 000 7,900 400 4,400 - 5292 NP 000 1260 4032
<br /> 09/09/93 34,000 4,100 3,100 810 2,900 - 5493 NP 000 1260 -4233
<br /> 11/30/93 56,000 14,000 9,000 920 4,400 - 5265 NP 000 1260 4005
<br /> 02/23/94 54,000 7,600 5,300 600 2,500 - 4842 NP 000 1260 -35 82
<br /> 05/31/94 85,000 13 000 12,000 1,200 6,500 - 4782 NP 000 1260 -3522
<br /> 08/15/94 180,000 10,000 7,800 1,500 6,600 - 5048 NP 000 1260 -3788
<br /> 11/08/94 2,500 250 150 95 240 - 5126 NP 000 1260 -3866
<br /> 02/08/95 75,000 4 700 6 000 2,300 81400 1 4837 NP 000 1260 -3577
<br /> 05/09/95 - - - - - 4669 NP 1 000 1 1260 1 -3409
<br /> 07/11/96 WELL ABANDONED
<br /> Monitoring Wel-MW-3 Screen Interval=45 to 75 eel
<br /> 06/06/91 1 - 850 924 165 2,570 5663 NP 000 1220 -4443
<br /> 172TABI XLS Page i of 13 92/8/2005
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