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F 5 <br /> TABLE 1 <br /> (Continued) <br /> Carbon Dioxide <br /> Sample Location Date Methane Percent Oxygen Percent Percent <br /> VP-1 11/30/2006 3.7 3.6 17.5 <br /> (cont'd) 11/17/2006 6.5 5.0 19.3 <br /> 11/1/2006 9.8 0.0 26.6 <br /> 10/19/2006 13.8 0.0 30.7 <br /> 9/29/2006 8.2 4.7 17.5 <br /> VP-2 12/28/2006 10.5 5.9 21.4 <br /> 12/15/2006 8.1 2.9 23.1 <br /> 11/30/2006 6.5 1.9 21.1 <br /> 11/17/2006 3.8 8.3 7.4 <br /> 11/1/2006 10.8 0.0 27.2 <br /> 10/19/2006 15.2 0.0 31.9 <br /> 9/29/2006 10.2 4.6 20.0 <br /> VP-3 12/28/2006 12.2 0.0 27.3 <br /> 12/15/2006 9.0 0.7 25.6 <br /> 11/30/2006 5.1 0.8 21.5 <br /> 11/17/2006 10.1 1.9 24.0 <br /> 11/1/2006 10.2 0.0 27.4 <br /> 10/19/2006 14.3 0.0 30.6 <br /> 9/29/2006 10.6 4.5 20.2 <br /> VP-4 12/28/2006 7.6 0.2 24.6 <br /> 12/15/2006 5.5 0.6 27.1 <br /> 11/30/2006 6.2 0.0 22.7 <br /> 11/17/2006 12.8 0.0 26.7 <br /> 11/1/2006 11.9 0.0 27.9 <br /> 10/19/2006 9.9 0.0 27.0 <br /> 9/29/2006 8.1 4.6 17.2 <br /> Collected by San Joaquin County Environmental Health Department staff. <br /> * <br /> The background methane concentration was measured to be 0.5%on September 29,2006. <br /> NM = not measured <br /> The methane concentration at this sample location was adjusted to be 0.5%less than the measured result. <br /> The background methane concentration was measured to be 0.1%on December 15,2006. <br /> K:\Wprocess\25532\WorldEnterprise\Quarterly Rpt\4Q06\CovLtrRpt.doc <br />