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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-g MTBE <br /> MW13 11/11/97 808 2320 -15 12 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW13 03/03/98 8 08 1809 -1001 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW13 03/03/98 808 <2 0* <br /> MW 13 05/20/98 808 1698 -890 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW 13 05/20/98 808 <2 0* <br /> MW13 08/19/98 808 1838 -1030 000 <05 <05 <05 <05 <50 <25 <br /> MW13 08/19/98 808 <2 0* <br /> MW13 11/18/98 808 1882 -1074 000 -- -- -- -- <br /> MW13 <br /> MW13 03/30/99 808 1688 -880 000 -- -- -- -- <br /> MW13 <br /> -MW13 05/05/99 808 17 09 -901 000 <0 5 <0 5 <0 5 <0 5 <50 <2 0 <br /> MW13 08/20/99 908 1872 -1064 000 -- -- -- -- <br /> MW13 <br /> -MW13 12/06/99 808 19 10 -1102 000 -- -- -- -- <br /> MW13 02/29/00 808 1682 -874 000 <1 <1 <1 <1 <50 <1 <br /> MW13 05/16/00 808 16 18 -8 10 000 -- -- -- -- <br /> MW13 <br /> -MW13 09/11/00 808 1868 -1060 000 -- -- -- <br /> MW13 <br /> -MW13 12/13/00 808 1859 -1051 000 <0 5 <0 5 <0 5 063 <50 <0 5 <br /> MW13 03/08/01 808 1788 -980 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 <br /> MW13 06121/01 808 1928 -1120 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 <br /> MW13 09/20/01 8 08 2057 -1249 000 -- -- -- -- <br /> MW13 <br /> -MW13 12/04/01 808 2039 -12 31, 000 -- -- -- -- <br /> MW13 03/06/02 808 1940 -1132 000 <0 5 220 115 300 801 h <0 5 <br /> PI 01/30/91 779 3024 -2245 000 -- -- -- -- <br /> PI 05/02/91 779 30 13 -2234 000 340 5 430 520 3,700 <br /> PI 07/16-17/91 779 3109 -2330 000 160 <2 5 160 240 3,000 <br /> P1 10/15/91 779 3168 -2389 000 69 3 4 63 73 1,300 -- <br /> PI 01/28/92 779 2993 -22 14 000 110 26 270 330 2,000 <br /> PI 04/30/92 779 2956 -21 77 000 120 <10 540 600 4,700 <br /> PI 08/13/92 779 3157 -2378 000 72 4 5 260 260 2,900 Y- <br /> P1 10/08/92 779 32 17 -2438 000 18 28 52 45 1,100 -- <br /> PI 02/23/93 779 28 82 -2103 000 66 18 200 200 2,300 <br /> PI 05/18/93 779 2746 -1967 000 43 18 290 220 3,200 <br /> P1 08/22/93 779 2772 -19 93 000 44 6 9 160 130 1,900 -- <br /> P1 12130193 779 2707 -19 28 000 210 52 840 770 7,800 -- <br /> glprojects173942Was4erlwpAO30213942gw xls Page 21 of 39 <br />