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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(pg/L) _ <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Nifmber Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW7 05/08/97 6 85 1731 -1046 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW7 08/26/97 6 85 2009 -1324 000 -- -- -- -- -- -- <br /> MW7 11/11/97 695 Well dry -- -- -- -- -- -- <br /> MW7 03/03/98 6 85 13 85 -700 000 <0 5 <0 5 <0 5 <0 5 79c <2 5 <br /> MW7 03/03/98 6 85 <2 0* <br /> MW7 05/20/98 6 85 1398 -7 13 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW7 05/20/98 6 85 <2 0* <br /> MW7 08/19/98 685 1543 -858 000 <05 <05 <05 <05 <50 <25 <br /> MW7 08/19/98 685 <2 0* <br /> MW7 11/18/98 6 85 15 82 -897 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW7 0313 0199 6 85 -- -- -- -- -- -- -- -- -- <br /> MW7 05/05/99 6 85 1433 -748 000 <0 5 <0 5 <0 5 0 637 542 <2 0 <br /> MW7 0812.0199 6 85 1575 -890 000 -- -- -- -- -- -- <br /> MW7 12/06/99 6 85 1597 -9 12 000 <1 <1 <1 <1 92 <1 <br /> MW7 02/29/00 6 85 1351 -666 000 16 <1 <1 <1 64 <1 <br /> MW7 05/16/00 6 85 1365 -680 000 <1 <1 <1 <1 <50 <1 <br /> MW7 09/11/00 6 85 1592 -907 000 <0 5 <0 5 <0 5 <0 5 53 <0 5 <br /> MW7 12/13/00 6 85 15 83 -898 000 076 2 8 063 309 <50 <0 5 <br /> MW7 03/08/01 6 85 1497 -8 12 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 <br /> MW7 06/21/01 6 85 1633 -948 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 <br /> MW7 09/20/01 6 85 1682 -997 000 -- -- -- -- -- -- <br /> 11,1W7 12/01/01 6 80 1718 -1038 000 -- -- -- -- -- -- <br /> MW8 04/11/88 778 2025 -1247 000 740 18,000 5,700 32,000 120,000 -- <br /> MW8 09/13/88 778 2258 -14 80 000 470 11,000 3,900 20,000 56,000 -- <br /> MW8 11/16/88 778 2272 -1494 000 <500 9,300 3,600 16,000 63,000 -- <br /> MW8 02/09/89 778 2228 -1450 000 650 13,000 3,900 21,000 62,500 -- <br /> MW8 05/31/89 778 23 95 -16 17 000 460 8,700 3,700 24,000 66,000 -- <br /> MW8 08/17/89 778 2549 -1771 000 620 10,000 5,500 25,000 72,000 -- <br /> MW8 12/19/89 778 2660 -18 82 000 190 2,800 1,100 5,300 21,000 -- <br /> MW8 03/21/90 778 27 11 -1933 000 880 11,000 4,400 22,000 63,000 -- <br /> MW8 05117190 779 27 87 -2009 000 520 5,500 3,900 20,000 67,000 -- <br /> 'projuts173942 Sana uLrl»ply i 20 I13942gw als Page 12 of 40 <br />