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11 <br />I <br />n <br />Cl <br />t <br />11 <br />TABLE11 <br />Unsaturated"o•-14 Monitoring <br />Third Quarter 2013 <br />. • • ,La-fdfill <br />Soil Gas <br />Well Probe <br />GW- <br />Methane <br />Content <br />(%) <br />Carbon <br />Dioxide <br />(%) <br />Oxygen <br />(%) <br />Number of <br />Compounds <br />Highest <br />Concentration <br />Found PPB (v/v) <br />VOC of Highest <br />Concentration <br />1 Shallow <br />NS <br />NS <br />NS <br />NS <br />NS <br />NS <br />Middle <br />NS <br />NS <br />NS <br />NS <br />NS <br />NS <br />Deep <br />0.1 <br />6.1 <br />15.4 <br />12 <br />560 <br />Freon 11 <br />2 Shallow <br />NS <br />NS <br />NS <br />NS <br />NS <br />NS <br />Middle <br />NS <br />NS <br />NS <br />NS <br />NS <br />NS <br />Deep <br />0 <br />4.4 <br />17.9 <br />15 <br />440 <br />Freon 11 and 1,1- <br />Dichlorothane <br />3 Shallow <br />NS <br />NS <br />NS <br />NS <br />NS <br />NS <br />Middle <br />0.1 <br />1.7 <br />19.3 <br />20 <br />88 <br />Trichloroethene <br />Deep <br />NS <br />NS <br />NS <br />NS <br />NS <br />NS <br />4 Shallow <br />NS <br />NS <br />NS <br />NS <br />NS <br />NS <br />Middle <br />0 <br />0.2 <br />17.8 <br />12 <br />240 <br />Freon 11 <br />Deep <br />NS <br />NS <br />NS <br />NS <br />NS <br />NS <br />5 Shallow <br />0 <br />0.8 <br />19.8 <br />9 <br />48 <br />Acetone <br />Middle <br />NS <br />NS <br />NS <br />NS <br />NS <br />NS <br />Deep <br />NS <br />NS <br />NS <br />NS <br />NS <br />NS <br />6 Shallow <br />NS <br />NS <br />NS <br />NS <br />NS <br />NS <br />Middle <br />NS <br />NS <br />NS <br />NS <br />NS <br />NS <br />Deep <br />0.1 <br />7.1 <br />10.2 <br />7 <br />6600 <br />Freon 12 <br />7 Shallow <br />0 <br />1.8 <br />18.8 <br />9 <br />27 <br />Acetone <br />Middle <br />0 <br />17.4 <br />3.4 <br />11 <br />52 <br />Acetone <br />E = Exceeds instrument calibration range. (None found this sampling period.) <br />TO -15 Sampling Date: July 26, 2013 by SCS Engineers <br />Note: Sampling locations were established in 2006, with VOC samples taken from one <br />location, most likely to have the highest VOC concentration. This probe continues to be <br />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 />probe at each well <br />sampled <br />Corral Hollow Sanitary Landfill 23 Department of Public Works/Solid Waste <br />3`d Quarter 2013 Groundwater Monitoring County of San Joaquin — October 15, 2013 <br />