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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 ms]) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE
<br /> V2 12/06/99 815
<br /> 02/29/00 --
<br /> 05/16/00
<br /> 09/11/00
<br /> 12/13/00 1760 -945 000 7,100 22,000 4,600 22,600 130,000 <500
<br /> V3 05/02/91 899 33 89 -2490 000 1,900 30,000 5,200 26,000 110,000 --
<br /> 07/16-17/91 34 86 -25 87 000 840 24,000 3,600 19,000 110,000 --
<br /> 10/15/91 35 38 -2639 000 1,200 22,000 4,400 22,000 110,000 --
<br /> 01/28/92 3356 -2457 000 1,100 21,000 4,900 23,000 86,000 --
<br /> 04/30/92 33 15 -2416 000 390 15,000 2,800 15,000 62,000 --
<br /> 08/13/92 35 32 -2633 000 620 17,000 4,800 23,000 110,000 --
<br /> 10/08/92 3596 -2697 000 430 11,000 3,200 17,000 100,000 --
<br /> 02/23/93 3255 -2356 000 -- -- __
<br /> 05/18/93 -- -_
<br /> 08/22/93 3133 -2234 000
<br /> 12/30/93 3051 -2152 000
<br /> 02/17/94 3008 -2109 000
<br /> 05/10/94 2955 -2056 000
<br /> 08/02/94 -- --
<br /> 11/01/94 3152 -2253 000 -- -_ -_
<br /> 02/17/95 28 93 -1994 000 250 10,000 5,100 23,000 85,000 --
<br /> 05/11/95 2619 -1720 000 110 7,200 4,100 19,000 70,000 --
<br /> 08/24/95 2734 -1835 000 <200 6,500 4,400 20,000 56,000 --
<br /> 10/19/95 2777 -18 78 000 <100 5,200 3,600 16,000 69,000 <500
<br /> 02/13/96 25 39 -1640 000 370 4,900 3,500 16,000 76,000 1,900
<br /> 04/18/96 23 83 -1484 000 <100 4,200 3,400 16,000 73,000 <500
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