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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
<br /> Well Elevation to Water Elevation Thickness Ethyl-
<br /> No Date (feet msl) (feet) (feet msl) (feet) Benzene Toluene benzene Xylenes TPH-g M I BE
<br /> V2 02/13/96 930 2460 -1530 Sheen
<br /> 04/18/96 2260 -1330 Sheen
<br /> 08/08/96 2390 -1460 Sheen -- -- -- __ __ _-
<br /> 11/04/96 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 20 74 -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 -780 000 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 -908 000 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 -7 61 000 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 17 55 -940 000 1,400 4,440 517 2,630 20,500 616
<br /> 12/13/00 1760 -945 000 7,100 22,000 4,600 22,600 130,000 <500
<br /> 03/08/01 1679 -8 64 000 5,700 17,000 4,900 24,100 210,000 <250
<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 3486 -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 33 56 -2457 000 1,100 21,000 4,900 23,000 86,000 --
<br /> 04/30/92 33 15 -24 16 000 390 15,000 2,800 15,000 62,000 --
<br /> 08113/92 35 32 -2633 000 620 17,000 4,800 23,000 110,000 --
<br /> f kprojects'739421maste[hvplg3G]U942gw As Pdge 35 of 41
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