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TABLE 6 <br /> is Unsaturated Zone Soil Pore Gas T015 Monitoring Results <br /> First Semester 2013 <br /> Foothill Sanitary Landfill <br /> SG Soil Gas Methane Carbon Oxygen Number of Highest VOC of Highest <br /> Well Content Dioxide (%) _ Compounds Concentration Concentration <br /> Probe N N Found PPB <br /> v/v <br /> 01 Sin le 0.4 0.5 18.7 3 36000 Toluene <br /> 02 Single 0 0.3 20.6 4 2.5 Freon 12 <br /> R3:: Single 0 1.7 18.7 6 34 Freon 12 <br /> 04 Single 0 2.1 18.4 5 21 Freon 12 <br /> 05 Single 0 0.7 19.6 3 4.8 1,1,2,2 - <br /> Tetracholoroethane <br /> 06 Single 0 2.8 17.8 5 180 Freon 12 <br /> 07 Single 0 0.5 20 4 49 Freon 11 <br /> 09 Single 0 E42 <br /> 20 0 0 NA <br /> 10 Single 0 10.7 5 410 Freon 12 <br /> 11 Single 0 10.9 5 200 Freon 12 <br /> TO-15 Sampling Date: January 28, 2013 by SCS Engineers <br /> Monitoring Probe Sampling Date for Methane, Carbon Dioxide, and Oxygen: January 28, 2013. <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 17 Department of Public Works/Solid Waste <br /> 1 n Semester 2013 Groundwater Monitoring County of San Joaquin—July 25,2013 <br />