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<br /> TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE, STOCKTON,CALIFORNIA
<br /> Casing Depth Groundwater LPH __- Concentration(µgfl _
<br /> Well Elevation to Water Elevation Thickness Ethyl-
<br /> Number _Date (feet) (feet) (feet)- (feet) Benzene _Toluene benzene- Xylenes TPH,E MTBE
<br /> V2 08/26/97 8 15 2074 -1259 000 9,900 45,000 7,300 40,000 270,000, <500
<br /> V2 11/11/97 8 15 21 57 -1342 000 12,000 34,000 4,500 22,000 160,000 3,500
<br /> V2 03/03/98 8 15 1595 -7 80 000 11,000 30,000 3,500 17,000 150,000 <2,500
<br /> V2 03/03/98 815 <200*
<br /> V2 05/20/98 8 15 15 63 -748 000 6,700 22,000 2,500 12,000 100,000 <1,000
<br /> V2 05/20/98 815 <100*
<br /> V2 08/19/98 8 15 1723 -908 000 3,300 16,000 16,000 7,900 46,000 <500
<br /> V2 08/19/98 815 <100*
<br /> V2 11/18/98 8 15 17 67 -952 000 5,700 21,000 2,600 13,000 86,000 <625
<br /> V2 03/30/99 8 15 1576 -7 61 000 4,830 17,900 2,800 13,300 77,900 <400
<br /> V2 05/05/99 8 15 16 12 -797 000 4,590 16,700 2,030 12,300 67,800 <200
<br /> V2 08/20/99 8 15 1755 -940 000 1,400 4,440 517 2,630 20,500 616
<br /> V2 12/06/99 815 -- -- -- __ -_ __
<br /> V2 02/29/00 815
<br /> V2 05/16/00 815
<br /> V2 09/11/00 815 -- -- -- -- -- __ __
<br /> V2 12/13/00 8 15 1760 -945 000 7,100 22,000 4,600 22,600 130,000 <500
<br /> V2 03/08/01 8 15 1679 -864 000 5,700 17,000 4,900 24,100 210,000 <250
<br /> V2 06/21/01 8 15 18 16 -1000 002 -- -- -- _- -- --
<br /> V2 09/20/01 8 15 1928 -11 13 000 4,800 25,000 6,000 28,600 94,000 <120
<br /> V2 12/04/01 811 1907 -10.96 000 6,400 16,000 2,800 12,800 110,000 <5*
<br /> V3 05/02/91 899 3389 -2490 000 1,900 30,000 5,200 26,000 110,000 --
<br /> V3 07116-17191 899 34 86 -25 87 000 840 24,000 3,600 19,000 110,000 --
<br /> V3 10/15/91 899 3538 -2639 000 1,200 22,000 4,400 22,000 110,000 --
<br /> V3 01/28/92 8 99 3356 -2457 000 1,100 21,000 4,900 23,000 86,000 --
<br /> V3 04/30/92 899 33 15 -24 16 000 390 15,000 2,800 15,000 62,000 --
<br /> V3 08/13/92 899 3532 -2633 000 620 17,000 4,800 23,000 110,000 --
<br /> V3 L0/08/92 899 3596 -2697 000 430 11,000 3,200 17,000 100,000 --
<br /> V3 02/23/93 899 32 55 -23 56 000 -- -- -- -- __
<br /> V3 05/18193 899 -- -- --
<br /> V3 08/22/93 899 3133 -2234 000
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