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4.2 Soil Gas Sample Analysis The soil gas samples were submitted to Eurofins Air Toxics Inc., a State of California- certified laboratory located in Modesto, California, for analysis. A list of analytes that were sampled in the TO-15 analysis is contained in Appendix D. 4.3 Field Monitoring Results The field monitoring data from SCS is contained on Table 3. Field monitoring data indicated that the only SG probe to contain methane was SG-1 at 0.3%. 4.4 Soil Gas TO-15 Analytical Results Analytical TO-15 results are summarized in Table 4. The initial testing of the deepest probe from new tri-level probes SG-2A, SG-3A, SG-6A, and SG-11A indicated that volatile organic compounds (VOCs) were detected in all samples. SCS has been instructed to collect samples from all levels of the new tri-level SG probes. The data from a complete second round of testing of the tri-level SG probes will be reported in Second 2016 Semiannual Monitoring Report. The analytical results from existing single-level probes SG-1, SG-4, SG-5, SG-7, SG-8, SG-9, and SG-10 are consistent with previous test results, indicating VOCs were detected in all samples. 5.0 EXTRACTIONWELL MONITORING RESULTS The most recent LFG testing data from LF-1 and LF-2 by SCS are contained in Appendix E. The tables in Appendix E includes LFG extraction well monitoring data from July 18, 2016 through October 6, 2016 and includes new wells GX-10, GX-11, GX-12, and GX-13. All new extraction wells were started up very gently to prevent stressing the methanogens otherwise known as "overpulling". SCS continues to make adjustments in order to find the optimum steady state operating condition or vacuum setting for each of the new wells. Wells GX-10, GX-11, GX-12, and GX-13 were started up on July 21, 2016. Initially, all but well GX-12 had elevated concentrations of methane (greater than 50%). SCS has been conducting frequent monitoring and tuning of these wells to reach healthy, steady- state operations. Generally, wells GX-10 and GX-12 are not producing much methane and can only be operated with a slight vacuum. Wells GX-11 and GX-13 seem to be producing more methane than wells GX-10 and GX-12, and are able to be operated with higher vacuum setpoints. However, it may take several months of gentle adjustments to realize the methane production rate at these wells and to find the optimum vacuum setting for healthy sustained operation. Of these 4 new wells, well GX-13 appears to be the best methane producing well, which is expected because of its location beneath the LF-2 overliner system, which is believed to be trapping LFG and promoting migration. 5