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TABLE 2 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 /> Number Date feet feet feet feet Benzene Toluene benzene Xylenes TPH- MTBE <br /> MW10 04/18/96 861 2320 A459 000 1,100 8,900 1,100 4,400 42,000 <500 <br /> MW10 08/08/96 861 2427 A566 000 58 340 61 230 1,500 <50 <br /> MWIO 11/04/96 861 2451 -1590 000 140 3,400 410 1,600 15,000 <250 <br /> MW1O 02/03/97 861 2024 -1163 000 1,500 18,000 2,100 9,500 66,000 1,800 <br /> MW10 05/08/97 729 1928 -1199 000 40 51 64 110 1,300 38 <br /> M W 10 08/26/97 729 21 11 -13 82 000 21 14 3 7 <0 5 63 <2 5 <br /> MW10 11/11/97 729 2162 -1433 000 18 060 0 84 <0 5 <50 3 1 <br /> MW1O 03/03/98 729 1630 -901 000 360 7,800 1,300 5,000 23,000 940 <br /> MW 10 03/03/98 729 <200* <br /> MW1O 05/20/98 729 1562 -833 000 8 1 85 11 100 630 <5 0 <br /> MW 10 05/20/98 729 <2 0* <br /> MW 10 08/19/98 729 17 06 -977 000 077 <0 5 <0 5 <0 5 <50 <2 5 <br /> mWIO 08/19/98 729 <2 0* <br /> MW10 11/18/98 729 1747 -10 18 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW 10 03/30/99 729 1554 -825 000 -- -- -- -- -- -_ <br /> MW 10 05/05/99 729 15 84 -855 000 <0 5 <0 5 <0 5 <0 5 <50 <2 0 <br /> MW 10 08/20/99 7 29 -- -- -_ -- <br /> MW10 12/06/99 729 1766 -1037 000 -- -- -- -- -- -- <br /> MW 10 02/29/00 729 1534 -805 000 <1 <1 <1 <1 <50 <1 <br /> MW10 05/16/00 729 1542 -8 13 0 00 -- -- -- _- -- -- <br /> M W 10 09/11/00 729 1743 -1014 000 08 2 <0 5 197 50 <0 5 <br /> MW 10 12/13/00 729 1729 -1000 000 <0 5 <0 5 <0 5 <0 5 62 <0 5 <br /> MW 10 03/08/01 7 29 1654 -9 25 000 <0 5 <0 5 <0 5 <0 5 78 <0 5 <br /> MW 10 06/21/01 729 1792 -1063 000 <0 5 <0 5 <0 5 <0 5 <50 12 <br /> MW10 06/21/01 729 <5* <br /> MW10 09/20/01 729 19 11 -1182 000 -- -- __ -- -- -- <br /> MW 10 12/04/01 725 1889 -1164 000 -- -- -- __ __ <br /> MW 10 03/06/02 725 1790 -1065 000 3 10 <0 5 <0 5 <0 5 369 h 140 <br /> MW10 03/06/02 725 <0 5* <br /> MW10 06/11/02 725 -- -- -- __ -- <br /> MW 10 09/10/02 725 <br /> MW 10 12/18/02 725 -- -- -- __ -- -_ -- <br /> MW 10 03/24/03 7 25 1226 -501 000 3 50 <0 5 <0 5 <0 5 541 h 86 <br /> MW10 03/24/03 725 <0 5* <br /> g 1projectsV39421master\wplq I205L3942gw xls Page 24 of 59 <br />