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Water Quality Monitoring Report <br /> French Camp Landfill <br /> the elevated chloride and TDS concentrations measured in well MW-10A are believed to be the <br /> result of this condition and not the result of landfill-related impacts. <br /> With the exception of TCFM at well WM-9A and chloroform at well MW-6A, no VOCs were <br /> measured at quantifiable concentrations in groundwater samples during the 2016 monitoring <br /> year. Both TCFM and chloroform have been previously confirmed in retest samples, however, <br /> neither of these VOCs exhibit an increasing trend. Given the distance of well MW-6A <br /> upgradient of the landfill the landfill, the chloroform concentrations measured in well MW-6A <br /> are not believed to be the result of a release from the landfill, while the TCFM concentrations <br /> measured in well MW-9A are well below risk-based concentrations and have been attributed to <br /> LFG following construction of the final cover. <br /> 6.3 Surface Water <br /> Surface water elevations at stream gauging locations varied by about one to three feet during <br /> the 2016 monitoring year. These changes reflect tidal and seasonal precipitation patterns. <br /> Surface water generally flows west toward the San Francisco Bay. <br /> The results of water quality analyses completed during the 2016 monitoring year from the <br /> surface water monitoring stations are generally consistent with previous results. During the <br /> 2016 monitoring year, no VOCs were detected at any of the surface water stations. A <br /> AOL comparison of upstream (S -1 and S -2) to downstream (S -3) surface water samples during <br /> the 2016 monitoring year indicates generally similar inorganic constituent concentrations. <br /> 6.4 Soil-Pore Gas <br /> Field screening results from soil-pore gas monitoring probes indicate that methane was not <br /> measured at concentrations exceeding 0.1 percent by volume in soil-pore gas monitoring <br /> probes during the 2016 monitoring year. <br /> 6.5 Compliance Record <br /> During the 2016 monitoring year, no NOVs were issued by the LEA or CalRecycle and the site is <br /> currently in compliance. <br /> Project No.2016.0007 6 <br />