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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA <br /> Casing Depth Groundwatei LPH Concentration( L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW9 08/02/94 788 27 65 -1977 000 4,900 230 120 490 13,000 -- <br /> MW9 11/01/94 788 2797 -2009 000 4,300 270 170 700 12,000 -- <br /> MW9 02/17/95 7 88 2538 -1750 000 2,200 89 100 410 7,100 -- <br /> MW9 05/11/95 7 88 2396 -1608 000 2,500 68 110 490 8,300 -- <br /> MW9 08/24/95 788 2439 -1651 000 490 60 38 110 1,200 -- <br /> MW9 10/19/95 788 24 85 -16 97 000 840 120 100 320 4,900 79 <br /> MW9 02/13/96 788 2255 -14 67 000 890 <10 110 220 4,400 -- <br /> MW9 04/18/96 788 2035 -1247 000 780 220 110 460 5,700 <125 <br /> MW9 08/08/96 788 2156 -1368 000 510 <10 88 260 2,700 230 <br /> MW9 11/04/96 788 2194 -1406 000 370 <10 24 26 1,700 160 <br /> MW9 02/03/97 788 1751 -9 63 000 320 16 56 160 1,600 230 <br /> MW9 05/08/97 657 1725 -1068 000 310 <5 0 39 57 2,600 250 <br /> MW9 08/26/97 657 19 05 -1248 000 64 <2 0 <2 0 <2 0 1,100 150 <br /> MW9 11/11/97 657 1947 -1290 000 3l <1 2 <1 2 <1 2 750 c 170 <br /> MW9 11/11/97 657 180* <br /> MW9 03/03/98 6 57 13 81 -724 000 22 <0 5 15 2 0 540 60 <br /> MW9 03/03/98 657 68* <br /> MW9 05/20/98 6 57 1386 -7 29 000 3 5 <0 5 <0 5 <0 5 220e 22 <br /> MW9 05/20/98 657 20* <br /> MW9 08/19/98 657 1550 -893 000 081 68 <0 5 <0 5 340 45 <br /> MW9 08/19/98 657 44* <br /> MW9 11/18/98 657 1573 -916 000 <05 <05 <05 <05 310c 18 <br /> MW9 03/30/99 657 13 85 -728 000 -- -- -- __ -_ -- <br /> MW9 05/05/99 657 1423 -766 000 <0 5 <0 5 <0 5 <0 5 93 1 5 12 <br /> MW9 08/20/99 6 57 15 69 -912 000 -- -- -- __ __ -- <br /> MW9 12/06/99 657 1583 -926 000 -- -- -_ __ -- <br /> MW9 02/29/00 657 1333 -676 000 <1 <1 <1 <1 <50 4 8 <br /> MW9 05/16/00 657 1339 -682 000 -- -- __ __ -- <br /> MW9 09/11/00 657 -- -- <br /> MW9 12/13/00 657 -- __ __ __ __ <br /> MW9 03/08/01 657 1472 -815 000 <05 <05 <05 <05 <50 76 <br /> MW9 06/21/01 657 16 14 -957 000 <0 5 <0 5 <0 5 <0 5 L10 17 <br /> MW9 06/21/01 657 19* <br /> MW9 09/20/01 657 17 17 -1060 000 -- -- __ __ __ -- <br /> g 1Pro3eus1739421masterlwplg0302U942gw xis Page 15 of 39 <br /> I <br />