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TABLE i GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942, 4444 NORTH PERSHING AVENUE, STOCKTON, CALIFORNIA
<br /> Casing Depth Groundwater LPH _Concentration (pg/L)
<br /> Well Elevation to Water Elevation Thickness Ethyl- T
<br /> No Date (feet msl) (feet) (feet ms]) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE
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<br /> V2 12/30/93 930 2976 -2046 000 27,000 35,000 4,200 22,000 170,000 --
<br /> 02/17/94 2933 -2003 000 -- -- __ --
<br /> 05/10/94 28 95 -1965 000 24,000 49,000 4,900 24,000 220,000 --
<br /> j 08/02/94 3029 -2099 000 21,000 43,000 3,700 20,000 160,000 --
<br /> 11/01/94 3064 -2134 000 23,000 46,000 4,100 22,000 200,000 --
<br /> 02/17/95 2823 -1893 000 -- -- -- --
<br /> 05/11/95 2495 -1565 000
<br /> 08/24/95 -- -- -_ -- -- -- _-
<br /> 10/19/95 2685 -1755 000 12,000 30,000 3,600 17,000 170,000 <2,500
<br /> 02/13/96 2460 -15 30 Sheen -- -- -- __
<br /> 04/18/96 2260 -13 30 Sheen
<br /> 08/08/96 2390 -1460 Sheen -- --
<br /> 1 1/04/96 2473 -1543 000 13,000 31,000 2,500 13,000 130,000 <2,500
<br /> 02/03/97 1970 -1040 Sheen -- -- -- --
<br /> 05/08/97 8 15 1920 -1105 000 11,000 29,000 2,900 14,000 170,000 <1,250
<br /> 08/26/97 2074 -1259 000 9,900 45,000 7,300 40,000 270,000 <500
<br /> 11/11/97 2157 -1342 000 12,000 34,000 4,500 22,000 160,000 3,500
<br /> 03/03/98 15 95 -7 80 000 11,000 30,000 3,500 17,000 150,000 <2,500
<br /> 03/03/98 <200*
<br /> 05/20/98 15 63 -7 48 000 6,700 22,000 2,500 12,000 100,000 <1,000
<br /> 05/20/98 <100*
<br /> 08/19/98 1723 -9 08 000 3,300 16,000 16,000 7,900 46,000 <500
<br /> 08/19/98 <100*
<br /> 11/18/98 1767 -952 000 5,700 21,000 2,600 13,000 86,000 <625
<br /> 03/30/99 15 76 -761 000 4,830 17,900 2,800 13,300 77,900 <400
<br /> 05/05/99 1612 -797 000 4,590 16,700 2,030 12,300 67,800 <200
<br /> 08/20/99 1755 -940 000 1,400 4,440 517 2,630 20,500 616
<br /> t 1projccts1739424mster4plq I2000942gw x]s Page 37 of 43
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