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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA
<br /> Casing Depth Groundwater LPH _ _ Concentration)
<br /> Well Elevation to Water Elevation Thickness Ethyl_
<br /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE
<br /> MW7 05/05/99 6 85 1433 -748 000 <0 5 <0 5 <0 5 0 637 54 2 <2 0
<br /> MW7 08/20/99 6 85 1575 -890 000 -- -- -- --
<br /> MW7 12/06/99 6 85 1597 -9 12 000 <1 <1 <1 <1 92 <1
<br /> MW7 02/29/00 6 85 1351 -666 000 16 <1 <1 <1 64 <1
<br /> MW7 05/16/00 6 85 13 65 -680 000 <1 <1 <1 <1 <50 <1
<br /> MW7 09/11/00 6 85 1592 -907 000 <0 5 <0 5 <0 5 <0 5 53 <0 5
<br /> MW7 12/13/00 6 85 1583 -898 000 076 28 063 309 <50 <0 5
<br /> MW7 03/08/01 685 1497 -8 12 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5
<br /> MW7 06/21/01 6 85 1633 -948 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5
<br /> MW7 09/20/01 685 1682 -997 000 -- -- -- --
<br /> MW7 12/04/01 680 17 18 -1038 000 -- -- -_ --
<br /> MW7 03/05/02 680 16.35 -9.55 000 <0.5 <0 5 <0.5 <0.5 <50 h <0 5
<br /> MW8 04111/88 778 2025 -1247 000 740 18,000 5,700 32,000 120,000
<br /> MW8 09/13/88 778 2258 -1480 000 470 11,000 3,900 20,000 56,000
<br /> MW8 11/16/88 778 2272 -14 94 000 <500 9,300 3,600 16,000 63,000 -
<br /> MW8 02/09/89 778 2228 -1450 000 650 13,000 3,900 21,000 62,500
<br /> MW8 05/31/89 778 2395 -16 17 000 460 8,700 3,700 24,000 66,000
<br /> MW8 08/17/89 778 2549 -1771 000 620 10,000 5,500 25,000 72,000
<br /> MW8 12/19/89 778 2660 -1882 000 190 2,800 1,100 5,300 21,000
<br /> MW 8 03/21/90 778 27 11 -1933 000 880 11,000 4,400 22,000 63,000 --
<br /> MW8 05/17/90 778 27 87 -2009 000 520 5,500 3,900 20,000 67,000 --
<br /> MW8 09/25/90 778 29 17 -21 39 000 -- -- -- --
<br /> MW8 12/19/90 7 78 29 13 -2135 000
<br /> MW8 01/30/91 7 78 Dry -- __ __ --
<br /> MW8 05/02/91 778 2939 -2161 000 830 5,900 4,900 23,000 57,000
<br /> MW8 07/16-17191 7 78 2990 -22 12 a 000 -- -- __ -
<br /> MW8 10/15/91 778 Dry
<br /> MW8 01/28/92 778 2931 -2153 000
<br /> MW8 04/30/92 778 2884 -2106 a 000
<br /> MWS 08/13/92 778 2991 -22 13 a 000 --
<br /> MW8 10/08/92 778 Dry -- -- __ __ --
<br /> MW8 02/23/93 7 78 28 13 -2035 000 1,100 5,400 3,300 11,000 49,000
<br /> MW8 05/18/93 778 2671 -1893 000 850 5,800 3,400 13,000 53,000 --
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