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TABLE <br /> Unsaturated Zone Soil Pore Gas -15 Monitoring Results <br /> First Quarter 2014 <br /> Corral Hollow Landfill <br /> Soil Gas Methane Carbon Highest <br /> Oxygen Number of VOC of Highest <br /> Well Probe Content Dioxide Concentration <br /> (%) Compounds Concentration <br /> GW- (%) (%) Found PPB(v/v) <br /> 1 Shallow 0 0.4 20.5 NS NS NS <br /> Middle 0 2.3 19.4 NS NS NS <br /> Deep 0 0.4 20.4 11 110 Freon 11 <br /> 2 Shallow 0 0.4 20.4 NS NS NS <br /> Middle 0 2.1 19.4 NS NS NS <br /> Deep 0 4.3 18.6 13 500 Freon 11 <br /> 3 Shallow 0 0.4 20.5 NS NS NS <br /> Middle 0 0.9 20.1 16 88 Trichloroethene <br /> Deep 0 0.7 20.1 NS NS NS <br /> 4 Shallow 0 0.2 20.6 NS NS NS <br /> Middle 0 0.3 18.5 6 320 Freon 11 <br /> Deep 0 0.2 20.7 NS NS NS <br /> 5 Shallow 0 1.5 19.5 9 400 Freon 11 <br /> Middle 0 1.6 19.5 NS NS NS <br /> Deep 0 2 18.6 NS NS NS <br /> 6 Shallow 0.1 2.9 15.4 NS NS NS <br /> Middle 0.1 8.6 8.1 NS NS NS <br /> Deep 0.1 11.8 2 6 22000 Freon 12 <br /> 7 Shallow 0.1 0.9 21 6 3.4 4-Ethyltoluene <br /> Middle 0.1 9.4 10.8 9 21 Carbon Disulfide <br /> 8 Shallow 0 0.7 19.7 NS NS NS <br /> Deep 0 0.5 19.1 5 32 Carbon Disulfide <br /> 9 Shallow 0 1.4 19.1 NS NS NS <br /> Middle 0 9.8 9.4 NS NS NS <br /> Deep 0 5.8 10.3 9 79 Freon 12 <br /> E=Exceeds instrument calibration range. (None found this sampling period.) <br /> TO-15 Sampling Date:January 31,2014 by SCS Engineers <br /> Note: Sampling locations were established in 2006,with VOC samples taken from one probe at each well location, <br /> most likely to have the highest VOC concentration. This probe continues to be sampled thereafter. <br /> NS=Not sampled,not selected for TO-15 monitoring <br /> NR=Not Reported <br /> Corral Hollow Sanitary Landfill 23 Department of Public Works/Solid Waste <br /> 1"Quarter 2014 Groundwater Monitoring County of San Joaquin-March 15,2014 <br />