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TABLE 7 <br /> Unsaturated Zone Soil Pore Gas T014 Monitoring Results <br /> First Semester 2011 <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 /> (%) N Found PPB <br /> V/V <br /> 01 Single 0.5 0.4 17.8 2 41000 Toluene <br /> 02 Single 0.0 0.4 19 5 13 Freon 12 <br /> 03 Single 0.0 1.8 17.7 6 35 Freon 12 <br /> 04 Single 0.0 3 16.6 8 25 Freon 12 <br /> 05 Single 0.0 0.6 18.8 1 19 Ethanol <br /> 06 Single 0.0 3.3 14.6 6 250 Freon 12 <br /> 07 Single 0.0 0.5 18.2 5 79 Freon 12 <br /> 09 Single 0.0 0.4 18.9 4 15 Ethanol <br /> 10 Single 0.0 4.1 8.5 6 360 Freon 12 <br /> 11 Single 0.0 12.4 5 5 350 Freon 12 <br /> TO-14 Sampling Date: January 25, 2011 by SCS Engineers <br /> Monitoring Probe Sampling Date for Methane, Carbon Dioxide, and Oxygen: January 25, 2011. <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 /> MONITORING ANALYTICAL DATA <br /> Historical groundwater and surface water monitoring data is contained on the attached diskette. The diskette <br /> contains Excel files and Sanitas compatible text files in tab-delimited format. The text files can be used for <br /> statistical analysis. <br /> Foothill Sanitary Landfill 20 Department of Public Works/Solid Waste <br /> 1t Semester 2011 Groundwater Monitoring County of San Joaquin—July 31,2011 <br />