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® TABLE5 <br /> UNSATURATED ZONE SOIL PORE GAS T014 MONITORING RESULTS <br /> FIRST SEMESTER 2013 <br /> NORTH COUNTY RECYCLING CENTER AND SANITARY LANDFILL <br /> Highest <br /> Methane Carbon Concentration <br /> Soil Gas Content Dioxide Oxygen Number of Found PPB VOC of Highest <br /> SG Well Probe (%) (%) (% Compounds (v/v) Concentration <br /> 01 Deep 0 0 20.6 0 0 ND <br /> 03 Deep 0 0.2 20.5 0 0 ND <br /> 06 Single 0.4 8.6 11.5 15 28 1,4-Dichlorobenzene <br /> TO-14 Sampling Date: January 30, 2013 by SCS Engineers <br /> Monitoring Probe Sampling Date for Methane, Carbon Dioxide, and Oxygen: January 30, 2013. <br /> Note: Sampling protocol provides for sampling from the one probe at each well that is 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 /> North County RC&SL Public Works/Solid Waste <br /> 1"Semester 2013 Groundwater Monitoring 16 County of San Joaquin—July 25,2013 <br />