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�*� � � � � � � V � � � � � � mm�r M <br /> TABLE ] GROUNDWATER MONITORING DATA, FORMER EXXON RS 7-3942, 4444 N PERSHING AVENUE, STOCKTON,CALIFORNIA <br /> Casing Depth Groundwater LPH Concentration(µg/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> No Date (ft msl) (ft) (ft MSI) (ft) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW7 04/18/96 8 35 Well dry -- -- -- -- -- <br /> 08/08/96 21 60 -1325 000 -- -- -- -- -- -- <br /> 11/04/96 2250 -14 15 000 -- -- -- -- -- -- <br /> 02/03/97 1758 -923 000 <0 5 <0 5 <0 5 <0 5 71 <2 5 <br /> 05/08/97 6 85 1731 -1046 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> 08/26/97 2009 -13 24 000 -- -- -- -- -- -- <br /> 11/11/97 Well dry -- -- -- -- -- -- <br /> 03/03/98 13 85 -700 000 <0 5 <0 5 <0 5 <0 5 79c <2 5 <br /> 03/03/98 <2 0* <br /> 05/20/98 13 98 -7 13 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> 05/20/98 <2 0* <br /> 08/19/98 1543 -8 58 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> 08/19/98 <2 0* <br /> 11/18/98 1582 -897 000 <05 <05 <05 <05 <50 <25 <br /> 03/30/99 -- -- -- -- -- <br /> 05/05/99 1433 -748 000 <0 5 <0 5 <0 5 0 637 54 2 <2 0 <br /> 08/20/99 15 75 -8 90 000 -- -- -- -- -- -- <br /> 12/06/99 15 97 -9 12 000 <1 <1 <1 <1 92 <1 <br /> 02/29/00 13 51 -666 000 1 6 <1 <1 <1 64 <1 <br /> 05/16/00 1365 -6 80 000 <1 <1 <1 <1 <50 <1 <br /> MWS 04/11/88 7 78 2025 -1247 000 740 18,000 5,700 32,000 120,000 -- <br /> 09/13/88 22 58 -14 80 000 470 11,000 3,900 20,000 56,000 -- <br /> 11/16/88 22 72 -1494 000 <500 9,300 3,600 16,000 63,000 -- <br /> 02/09/89 2228 -1450 000 650 13,000 3,900 21,000 62,500 -- <br /> 05/31/89 23 95 -16 17 000 460 8,700 3,700 24,000 66,000 <br /> 08/17/89 2549 -1771 000 620 10,000 5,500 25,000 72,000 -- <br /> 12/19/89 2660 -18 82 000 190 2,800 1,100 5,300 21,000 -- <br /> 03/21/90 27 11 -19 33 000 880 11,000 4,400 22,000 63,000 -- <br /> 05/17/90 27 87 -2009 000 520 5,500 3,900 20,000 67,000 -- <br /> I F mji -t iti 73942un lSILI%xli Q) 00\11)42-a %I, Page I I U37 <br />