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<br /> TABLE 1 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 /> No Date (feet msl) (feet) (feet msl) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE
<br /> V2 08/20/99 8 15 1755 -940 000 1,400 4,440 517 2,630 20,500 616
<br /> 12/06/99 815 -- -- -- --
<br /> 02/29/00 815
<br /> 05/16/00 815
<br /> 09/11/00 815 -- -- -- -- -- -- -- -- --
<br /> 12/13/00 8 15 1760 -945 000 7,100 22,000 4,600 22,600 130,000 <500
<br /> 03/08/01 8 15 1679 -864 000 5,700 17,000 4,900 24,100 210,000 <250
<br /> 06/21/01 8.15 1816 -10.00 0.02 -- -- -- -- -- --
<br /> V3 05/02/91 899 33 89 -2490 000 1,900 30,000 5,200 26,000 110,000 --
<br /> 07/16-17191 899 3486 -25 87 000 840 24,000 3,600 19,000 110,000 --
<br /> 10/15/91 999 35 38 -2639 000 1,200 22,000 4,400 22,000 110,000 --
<br /> 01/28/92 899 33 56 -2457 000 1,100 21,000 4,900 23,000 86,000 --
<br /> 04/30/92 899 33 15 -24 16 000 390 15,000 2,800 15,000 62,000 --
<br /> 08/13/92 8 99 35 32 -2633 000 620 17,000 4,800 23,000 110,000 --
<br /> 10/08/92 899 35 96 -2697 000 430 11,000 3,200 17,000 100,000 --
<br /> 02/23/93 899 32 55 -23 56 000 -- -- -- -- -- --
<br /> 05/18/93 899 -- -- -- -- -- -- -- --
<br /> 08/22/93 899 3133 -2234 000 -- -- -- -- --
<br /> 12/30/93 899 3051 -2152 000 -- -- -- -- -- --
<br /> 02/17/94 899 3008 -2109 000 -- -- -- -- --05/10/94 899 2955 -2056 000 -- -- -- -- --
<br /> 08/02/94 8 99 - -- -- -- -- -- -- -- --
<br /> 11/01/94 899 31 52 -2253 000 -- -- -- -- --
<br /> 02/17/95 899 28 93 -1994 000 250 10,000 5,100 23,000 85,000 --
<br /> 05/11/95 899 2619 -1720 000 110 7,200 4,100 19,000 70,000 --
<br /> 09/24195 899 2734 -1835 000 <200 6,500 4,400 20,000 56,000 --
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