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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 ( /L)
<br /> Well Elevation to Water Elevation Thickness Ethyl-
<br /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE
<br /> MW7 09/20/01 6 85 1682 -997 000
<br /> MW7 12/04/01 6 80 17 18 -1038 000 -- -- --
<br /> MW7 03105102 6 80 1635 -955 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5
<br /> MW7 06/11/02 6 80 -- -- -- -_ -- --
<br /> MW7 09/10/02 680 1800 -1120 000
<br /> MW7 12/18/02 680 1773 -1093 000 -- -- -- _- -_ --
<br /> MW7
<br /> -
<br /> MW7 03/24/03 680 1725 -1045 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5
<br /> MW7 06/11/03 680 1738 -1058 000 -- -- -- -- -- --
<br /> MW7 09/17/03 6 80 1871 -1191 000 -- -- ._ __ __ _.
<br /> MW8 04/11/88 7 78 2025 -1247 000 740 18,000 5,700 32,000 120,000 MW8 091l3188 778 2258 -1480 000 470 11,000 3,900 20,000 56,000 --
<br /> MW8 11/16/88 7 78 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 -1617 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 MW8 12/19/89 7 78 2660 -1882 000 190 2,800 1,100 5,300 21,000 MW8 03/21/90 778 27 11 -1933 000 880 11,000 4,400 22,000 63,000 MW8 05/17/90 778 27 87 -2009 000 520 5,500 3,900 20,000 67,000 --
<br /> MW8 09/25/90 7 78 29 17 -2139 000 -- -- __ __ --
<br /> MW8 12/19/90 779 29 13 -2135 000
<br /> MW8 01/30/91 778 Dry -- __ -_ __ --
<br /> MW8 05/02/91 778 2939 -2161 000 830 5,900 4,900 23,000 57,000 MW8 07116-17191 778 2990 -22 12 a 000 -- -- -- -- --
<br /> MW8 10/15/91 7 78 Dry
<br /> MW8 01/28/92 778 2931 -2153 000
<br /> MW8 04/30/92 778 28 84 -21 06 a 000
<br /> MW8 08/13/92 778 2991 -22 13 a 000 -- -- -- -- -- __
<br /> MW8 10/08/92 778 Dry -- __ -- -- --
<br /> MW8 02/23/93 778 2813 -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 --
<br /> MW8 08/22/93 778 2695 -19 17 000 650 4,400 3,500 13,000 52,000 MW8 12/30/93 778 2639 -18 61 000 820 6,200 4,200 14,000 50,000 --
<br /> MW8 02/17/94 778 26 10 -1832 000 510 3,800 3,400 13,000 44,000 --
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