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TABLE 5 <br /> Unsaturated Zone Soil Pore Gas T014 Monitoring Results <br /> First Semester 2008 <br /> Foothill Sanitary Landfill <br /> Methane Carbon Highest <br /> Soil Gas Oxygen Number of Concentration VOC of Highest <br /> SG Well Probe Content Dioxide (%) Compounds Found PPB Concentration <br /> 01 Single 0.2 0.4 19.2 6 200 Toluene <br /> 02 Single 0.0 0.1 20.5 8 18 Ethanol <br /> 03 Single 0.0 3.1 19.2 8 75 Tetrah drofuran <br /> 04 Single 0.0 0.6 20 7 72 Tetrah drofuran <br /> 05 Single 0.0 0.7 19.7 7 180 Tetrah drofuran <br /> 06 Single 0.0 1.2 15.3 8 620 Freon 12 <br /> Dichlorodifluoromethane <br /> 07 Single 0.0 0.4 19 8 130 Freon 12 <br /> Dichlorodifluoromethane <br /> 08 Single 0.0 0.9 17.6 2 1300 Freon 12 <br /> Dichlorodifluoromethane <br /> 09 Single 0.0 0.4 20.1 3 940 Tetrah drofuran <br /> 10 Single 0.0 2.5 12.3 11 220 Freon 12 <br /> Dichlorodifluoromethane <br /> 11 Single 0.0 15.5 1.7 11 440 Freon 12 <br /> Dichlorodifluoromethane <br /> T#1 Soil Gas NS NS NS 9 2800 Freon 12 <br /> Trench#1 Dichlorodifluoromethane <br /> TO-14 Sampling Date: January 29, 2008 by SCS Engineers <br /> Monitoring Probe Sampling Date for Methane, Carbon Dioxide, and Oxygen: January 29, 2008. <br /> Note: Sampling protocol provides for sampling from the one probe at each well that most likely to have the <br /> highest VOC concentration. See Appendix J for major gasses composition at all soil gas probes <br /> NS = Not sampled <br /> ND = Not detected <br /> Foothill Sanitary Landfill 16 Department of Public Works/Solid Waste <br /> 1s`Semester 2008 Groundwater Monitoring County of San Joaquin-July 31,2008 <br />