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<br /> TABLE I GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSNING AVENUE,STOCKTON,CALIFORNIA
<br /> Casing Depth Groundwater LPH _ _ - Concentration(µg/L)
<br /> Well Elevation to Water Elevation Thickness Ethyl-
<br /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE
<br /> MW8 02/13/96 7 78 22 15 -1437 000 190 2,100 2,600 10,000 57,000 --
<br /> MW8 04/18/96 778 1980 -1202 000 130 1,700 2,400 9,400 43,000 <125
<br /> MW8 08/08/96 778 21 11 -13 33 000 200 2,700 3,300 13,000 46,000 <250
<br /> MW8 11/04/96 778 21 55 -1377 000 160 I,700 2,700 9,600 48,000 <250
<br /> MW8 02/03/97 778 1678 -900 000 <100 1,400 2,500 9,900 42,000 <120
<br /> MW8 05/08/97 6 45 1666 -1021 000 110 880 2,100 7,800 41,000 120
<br /> MWS 08/26/97 645 1846 -1201 000 93 950 2,200 7,500 35,000 150
<br /> MW8 11/11/97 645 1898 -1253 000 <50 700 2,500 9,100 36,000 <250
<br /> MW8 11/11/97 645 69*
<br /> MW8 03/03198 6 45 1302 -6 57 000 <50 780 1,900 6,500 26,000 <250
<br /> MW8 03/03/98 645 <100*
<br /> MW8 05/20/98 645 1336 -6 91 000 71 200 2,000 4,600 31,000 <125
<br /> MW8 05/20/98 645 43*
<br /> MW8 08/19/98 645 14 91 -846 000 77 1,300 2,300 7,800 31,000 310
<br /> MW8 08/19/98 6 45 <100*
<br /> MW8 11/18/98 645 15 15 -870 000 38 220 2,900 7,100 27,000 <125
<br /> MW8 03/30/99 645 1330 -6 85 000 -- -- -- -- -- --
<br /> MW8 05/05/99 645 1367 -722 000 188 78 9 1,580 3,000 19,100 46 1
<br /> MW8 08/20/99 645 15 15 -870 000 -- -- -- -- -- --
<br /> MW8 12/06/99 645 15 25 -8 80 000 -- -- -- -- -- --
<br /> MW8 02/29/00 645 1276 -631 000 31 110 1,100 2,330 10,000 42
<br /> MW8 05/16/00 6 45 1297 -652 000 -- -- -- -- -- --
<br /> MW8 09/11/00 645 -- -- -- -- -- -- -- __ --
<br /> MW8 12/13/00 645 1520 -8 75 000 31 11 410 3675 4,200 37
<br /> MW8 12/13/00 645 22*
<br /> MW8 03/08/01 645 1431 -786 000 15 44 880 1,545 13,000 19
<br /> MW8 06/21/01 645 1567 -922 000 13 61 240 580 5,700 17
<br /> MW8 06/21/01 645 22*
<br /> MW8 09/20/01 645 1674 -1029 000 -- -- -- -- -- --
<br /> MW8 12/04/01 642 1648 -1006 000
<br /> MW8 03/05/02 642 1570 -9 28 000 -- -- -- __ --
<br /> MW8 03/06/02 642 -- -- -- 060 500 233 577 215 h <0 5
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