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FORWARD LANDFILL 9999 S.Austin Road <br /> Manteca,CA 95336 <br /> (209)9824298,Fax(209)982-1009 <br /> January 26, 2017 <br /> J N: 2016-0007 <br /> Mr. Brendan Kenny <br /> Central Valley Regional Water Quality Control Board <br /> 11020 Sun Center Drive,#200 <br /> Rancho Cordova, CA 95670-6114 <br /> SUBJECT: JULY— DECEMBER 2016 SEMIANNUAL/ANNUAL <br /> WATER QUALITY MONITORING REPORT <br /> FRENCH CAMP LANDFILL <br /> SAN JOAQUIN COUNTY,CALIFORNIA <br /> Forward, Inc. (Forward) is pleased to submit the July through December 2016 semiannual and <br /> annual monitoring report for the French Camp Landfill, in compliance with the California <br /> Regional Water Quality Control Board - Central Valley Region (RWQCB) Waste Discharge <br /> Requirement (WDR) Order Number R5-2007-0046. This report summarizes standard <br /> observations and presents the results of surface-water, groundwater, and soil-pore gas <br /> monitoring from the semiannual (July 1 through December 31, 2016) monitoring period. This <br /> report also presents an annual summary for the site. <br /> During the monitoring period, no violations have been issued for the facility. Groundwater <br /> quality conditions beneath the French Camp Landfill during the monitoring period and over the <br /> 2016 year are generally similar to those observed during previous monitoring periods. During <br /> monitoring period, inorganic concentration limits (CLs) were exceeded for chloride in the <br /> samples from wells MW-913 and MW-10A. However, neither well exhibited a statistically <br /> significant increasing trend for chloride. <br /> With the exception of the detection of trichlorofluoromethane (TCFM) at well MW-9A and <br /> chloroform at well MW-6A, no volatile organic compounds (VOCs) were detected above a <br /> practical quantitation limit in groundwater samples collected during the 2016 monitoring year. <br /> Both TCFM and chloroform have been previously confirmed in retest samples, however, neither <br /> of these VOCs exhibited an increasing trend. Given the distance of well MW-6A from the <br /> landfill, the chloroform concentrations measured in well MW-6A are not believed to be the <br /> result of a release from the landfill. The TCFM concentrations measured in well MW-9A are <br /> well below risk-based concentrations and have been attributed to landfill gas. <br /> The results of water quality analyses completed for surface-water monitoring stations are <br /> generally consistent with previous results. During the monitoring period, no VOCs were <br /> detected in the surface water samples collected. <br />