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• <br /> TABLE 1 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 /> No Date (feet ms)) (feet) (feet msl) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW12 08/19/98 875 <2 0* <br /> 11/18/98 18 10 -935 000 <br /> 03/30/99 1630 -755 000 -- __ <br /> 05/05/99 1644 -7 69 000 <0 5 <0 5 <0 5 <0 5 <50 <2 0 <br /> 08/20/99 -- -- -_ -- -- <br /> 12/06/99 -- <br /> 02/29/00 __ __ __ -- -- <br /> 05/16/00 1628 -753 000 <br /> 09/11/00 _- <br /> 12/13/00 -_ <br /> MW13 05/18/93 949 33 75 -2426 000 1 1 <0 5 <0 5 <1 71 -_ <br /> 08/22/93 35 05 -2556 000 <0 5 <0 5 <0 5 <0 5 <50 <br /> 12/30/93 3329 -23 80 000 <0 5 <0 5 <0 5 <0 5 <50 <br /> 02/17/94 3273 -2324 000 2 3 <0 5 <0 5 0 5 <50 -- <br /> 05/10/94 32.00 -2251 000 1 1 <0 5 <0 5 <0 5 110 -- <br /> 08/02/94 33 30 -23 81 000 13 68 5 9 35 620 -- <br /> 11/01/94 33 97 -2448 000 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 02117195 31 76 -2227 000 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 05/11/95 28 90 -1941 000 <0 5 <0 5 <0 5 <0 5 <50 -_ <br /> 08/24/95 2958 -2009 000 <0 5 <0 5 <0 5 <0 5 -- <50 -- <br /> 10/19/95 2997 -2048 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> 02/13/96 2785 -1836 000 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 04/18/96 2S27 -15 78 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> 08/08/96 2600 -1651 000 -- -_ -_ <br /> 11/04/96 2636 -1687 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> 02/03/97 2220 -1271 000 -- -_ -- -- -- -- <br /> f�projects1739421masterlwplq]2000942gw As Page 22 of 43 <br />