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TABLE 3 <br /> ® UNSATURATED ZONE SOIL PORE GAS TO-15 MONITORING RESULTS <br /> First Quarter 2013 <br /> HARNEY LANE SANITARY LANDFILL <br /> Soil Gas Methane Carbon Highest <br /> Well Probe Content Dioxide Oxygen Number of Concentration VOC of Highest <br /> GW- M M (%) Compounds Found PPB Concentration <br /> v/v <br /> 9 Middle 0 1.3 19.5 5 5.5 Tetrahydrofuran <br /> 10 Deep 0 10.9 11.8 10 64 Tetrahydrofuran <br /> East Header 26.6 24.7 0.2 24 2400 Ethyl Benzene <br /> West Header 25 1 27.3 0.2 28 1 11000 Toluene <br /> E= Exceeds instrument calibration range. (None found this sampling period.) <br /> TO-15 Sampling Date: January 30, 2013 by SCS Engineers <br /> Monitoring Probe Sampling Date for Methane, Carbon Dioxide, and Oxygen: January 1,2013 by LFG System <br /> Header Data: January 1, 2013. <br /> Note: Sampling protocol for the 2006 VOC samples required sampling from one probe at each well location, most <br /> likely to have the highest VOC concentration. This probe continues to be sampled thereafter. <br /> See Appendix J for gas composition at all soil gas probes <br /> NS = Not sampled, not selected for TO-15 monitoring <br /> NR = Not Reported <br /> Harney Lane Sanitary Landfill Department of Public Works/Solid Waste <br /> 1 M Semester 2013 Groundwater Monitoring Report County of San Joaquin—July 15,2013 <br />