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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(µg/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> _Number _ Date_ (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE T <br /> MW9 08/02/94 788 2765 -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 02/17/95 788 25 38 -1750 000 2,200 89 I00 410 7,100 -- <br /> MW9 05/11/95 788 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 2485 -1697 000 840 120 100 320 4,900 79 <br /> MW9 02/13/96 788 2255 -1467 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 -963 000 320 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 1905 -1248 000 64 <2 0 <2 0 <2 0 1,100 150 <br /> MW9 11/11/97 657 1947 -1290 000 31 <1 2 <1 2 <1 2 750 c 170 <br /> MW9 11/11/97 657 180* <br /> MW9 03/03/98 657 1381 -724 000 22 <0 5 15 20 540 60 <br /> MW9 03/03/98 657 68* <br /> MW9 05/20/98 657 1386 -729 000 35 <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 <0 5 <0 5 <0 5 <0 5 310 c 18 <br /> MW9 03/30/99 657 1385 -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 08/20/99 657 1569 -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 48 <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 -8 15 000 <0 5 <0 5 <0 5 <0 5 <50 76 <br /> MW9 06/21/01 657 1614 -957 000 <0 5 <0 5 <0 5 <0 5 110 17 <br /> MW9 06/21/01 657 19* <br /> g 1projects%?39421masterlwplq 10M3942gw xis Page 21 of 58 <br />