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TABLE 5 <br /> Unsaturated Zone Soil Pore Gas T014 Monitoring Results <br /> First Semester 2009 <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 0.5 0.5 18.9 4 62000 Toluene <br /> 02 Single 0.0 0.7 9.8 3 860 Freon 12 <br /> 03 Single 0.0 3.2 16.9 7 330 Toluene <br /> 04 Single 6.7 8.4 0.0 13 600 Freon 12 <br /> 05 Single 0.0 0.6 19.6 2 12 Acetone <br /> 06 Single 0.0 4.9 6.2 4 4200 Freon 12 <br /> 07 Single 0.0 0.4 18.0 6 150 Freon 12 <br /> 08 Single 0.0 1.6 16.5 2 1300 Freon 12 <br /> 09 Single 0.0 0.4 20.0 4 30 Ethanol <br /> 10 Single 3.0 5.0 0.0 11 1300 Freon 12 <br /> 11 Single 11.5 13.9 0.0 10 1300 Freon 12 <br /> T#1 Soil Gas 25.5 26.5 4.1 18 28000 Ethanol <br /> Trench#1 <br /> TO-14 Sampling Date: January 22 &23, 2009 by SCS Engineers <br /> Monitoring Probe Sampling Date for Methane, Carbon Dioxide, and Oxygen: January 22&23, 2009. <br /> Soil gas trench data by County staff 4/28/09 <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 19 Department of Public Works/Solid Waste <br /> 1"Semester 2009 Groundwater Monitoring County of San Joaquin-July 31,2009 <br />