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TA L <br /> Unsaturated Zone Soil Pore Gas T015 Monitoring Results <br /> First Semester 2014 <br /> Foothill Sanitary Landfill <br /> SG Soil Gas Methane Carbon Oxygen Number of Highest VOC of Highest <br /> Well Probe Content Dioxide (%) Compounds Concentration Concentration <br /> Found PPB <br /> (V/V <br /> 01 Single 0.4 0.3 19.5 2 44000Toluene <br /> 02 Single 0 1.2 14.0 4 480 Freon 12 <br /> 03 Single 0 1.9 19.7 6 71 Freon 12 <br /> 04 Single 0 6.5 11.0 8 160 Freon 12 <br /> 05 Single 0 0.6 20.8 4 2.8 Freon 12 <br /> 06 Single 0 2.8 18.4 15 200 Freon 12 <br /> 07 Single 0 0.5 20.3 3 78 Freon 11 <br /> 09 Single 0 0.4 19.9 2 550 Toluene <br /> 10 Single 0 5.4 5.4 7 1100 Toluene <br /> 11 Single 0 12.7 4.8 5 370 Freon 12 <br /> TO-15 Sampling Date: March 18, 2014 b SCS Engineers <br /> Monitoring Probe Sampling Date for Methane, Carbon Dioxide, and Oxygen: March 18, 2014. <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 /> 1 t Semester 2014 Groundwater Monitoring County of San Joaquin—July 31,2014 <br />