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� i♦ � � 1• i i i i i i A � � � � � 1� � TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE, STOCKTON,CALIFORNIA Casing Depth Groundwater LPH - Concentration( /L) Well Elevation to Water Elevation Thickness Ethyl- Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH g MTBE M W 12 09/20/01 8 75 1985 -11 to 000 M W 12 12/04/01 775 1966 -1191 000 M W 12 03/05/02 775 -- __ __ __ h M W 12 06/11/02 775 -- __ -- MW13 _MW13 05/18/93 949 3375 -2426 000 1 1 <0 5 <0 5 <1 71 MW13 08/22/93 949 3505 -2556 000 <0 5 <0 5 <0 5 <0 5 <50 MW13 12/30/93 949 3329 -23 80 000 <0 5 <0 5 <0 5 <0 5 <50 MW13 02/17/94 949 3273 -2324 000 2 3 <0 5 <0 5 0 5 <50 MW13 05/10/94 949 3200 -2251 000 1 1 <0 5 <0 5 <0 5 110 MW13 08/02/94 949 3330 -23 81 000 1 3 6 8 5 9 35 620 MW13 11/01/94 949 3397 -2448 000 <0 5 <0 5 <0 5 <0 5 <50 MW13 02/17/95 949 3176 -2227 000 <0 5 <0 5 <0 5 <0 5 <50 MW13 05/11/95 949 2890 -1941 000 <0 5 <0 5 <0 5 <0 5 <50 MW13 08/24/95 949 2958 -2009 000 <0 5 <0 5 <0 5 <0 5 <50 -- MW13 - MW13 10/19/95 949 2997 -2048 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW13 02/13/96 949 2785 -1836 000 <0 5 <0 5 <0 5 <0 5 <50 -- MW13 04/18/96 949 2527 -15 78 0 00 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW13 08/08/96 949 2600 -1651 000 -- -- -- MW13 _MW13 11/04/96 949 2636 -16 87 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW13 02/03/97 949 2220 -1271 000 -- -- __ -- MW13 _MW13 05/08/97 808 20 87 -1279 000 MW13 08/26/97 808 2269 -1461 000 -- -- __ -- MW13 _MW13 11/11/97 808 2320 -15 12 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW13 03/03/98 8 08 1809 -1001 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW13 03/03/98 8 08 <2 0* M W 13 05/20/98 808 1698 -8 90 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW13 05/20/98 808 <2 0* MW13 08/19/98 808 1838 -1030 0 00 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW13 08/19/98 808 <2 0* MW13 11/18198 808 1882 -10 74 000 __ -_ -- MW13 _MW13 03130199 808 1688 -8 80 000 g1pro3ecis%739421nrasterlwplg060213942gw xis Page 22 of 43