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Table <br /> Tracy Service Center <br /> Fourth Quarter 1995 Monitoring Data <br /> Page 7 of 7 <br /> Top of Depth to Groundwater Ethyl- Total <br /> Sample Sampling Casing Groundwater Elevation TPHG Benzene Toluene benzene Xylenes Lead <br /> Designation Date ft/MSL) (ft) (ft/MSL) u u u u u m <br /> OW-6 10/05/93 9.70 8.42 1.28 <50 <0.5 <0.5 <0.5 <0.5 NA <br /> OW-6 04/05/94 9.70 7.89 1.81 <50 <0.5 <0.5 <0.5 <0.5 NA { <br /> OW-6 09/29/94 9.70 8.61 1.09 <50 <0.5 <0.5 <0.5 <0.5 NA <br /> OW-6 02/14/95 9.70 7.61 2.09 --- --- <br /> OW-6 05/19/95 9.70 8.14 1.56 --- --- --- --- --- <br /> OW-6 08/08/95 9.70 8.80 0.90 <50 <0.5 <0.5 <0.5 <0.5 NA <br /> OW-6 11/21/95 9.70 8.68 1.02 --- --- <br /> Blank 09/30/91 --- --- --- <30 <0.3 <0.3 <0.3 <0.3 NA <br /> Blank 01/16/92 --- --- <30 <0.3 <0.3 <0.3 <0.3 NA <br /> Blank 04/08/92 --- --- --- <30 <0.3 <0.3 <0.3 <0.3 NA <br /> Blank 07/20/92 --- --- --- <50 <0.5 <0.5 <0.5 <0.5 NA <br /> Blank 10/13/92 --- --- --- <50 <0.5 <0.5 <0.5 <0.5 NA <br /> Blank 04/12/93 --- --- --- <50 <0.5 <0.5 <0.5 <0.5 NA <br /> Blank 10/05/93 --- --- --- <50 <0.5 <0.5 <0.5 <0.5 NA <br /> Blank 04/05/94 --- --- --- <50 <0.5 <0.5 <0.5 <0.5 NA <br /> Blank 09/29/94 --- --- --- <50 <0.5 <0.5 <0.5 <0.5 NA <br /> Blank 02/14/95 --- --- --- <50 <0.5 <0.5 <0.5 <0.5 NA <br /> Blank 05/19/95 --- --- --- <50 <0.5 <0.5 <0.5 <0.5 NA <br /> Blank 08/08/95 --- --- --- <50 <0.5 <0.5 <0.5 <0.5 NA <br /> Blank 11/21/95 --- --- --- <50 <0.5 0.7 <0.5 0.8 NA <br /> WHO=total petroleum hydrocarbons as gasoline. <br /> ft/MSL=feet with respect to mean sea level. <br /> A x not available. <br /> =milligrams per liter. <br /> =microffarns per liter. <br /> Revision 1: 12129/95 <br /> V-N VT'ZIM 4'1111501\M149516 XIS <br />