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I <br /> FORWARD LANDFILL 9999 S.Austin Road <br /> Manteca,CA 95336 <br /> (209)982-4298,Fax(209)982-1009 <br /> January 24,2010 ' <br /> JN:2010-0030 <br /> Mr.Ross Atkinson <br /> Central Valley Regional Water Quality Control Board <br /> 11020 Sun Center Drive,#200 <br /> Rancho Cordova,CA 95670-6114 <br /> SUBJECT: JULY—DECEMBER 2010 SECOND 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 2010 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 monitoring <br /> from July 1 through December 31,2010. This report also presents an annual summary that <br /> includes a summary of the analytical results for the last five years(2006 through 2010),time- <br /> series concentration plots for field and monitoring parameters,piper diagrams,and well <br /> hydrographs. <br /> During the monitoring period and over the 2010 monitoring year,no violations have been issued <br /> for the facility. Groundwater quality conditions beneath the French Camp Landfill during the <br /> monitoring period and over the 2010 monitoring year are generally similar to those observed in <br /> previous monitoring periods. Concentration limits(CLs)were exceeded for four inorganic <br /> constituents in the samples collected from well MW-10A,and with the exception of the chloride <br /> concentration measured in the sample collected from well MW-10A,none of the constituents <br /> that exceeded a CL exhibited a statistically significant increasing trend during the monitoring <br /> period. Previous statistical exceedances for chloride and total dissolved solids(TDS)have been <br /> identified in samples from well MW-l0A and a no release demonstration for groundwater <br /> monitoring well MW-10A(Herst,2005)concluded that the French Camp Landfill has been <br /> impacted by saltwater intrusion and elevated chloride and TDS concentrations measured in well <br /> MW-10A are believed to be the result of this condition and not the result of landfill-related <br /> impacts. With the exception of one estimated trace level concentration of <br /> trichlorofluoromethane in the sample collected from well MW-9A,no volatile organic <br /> compounds(VOCs)were detected in any of the groundwater monitoring wells during the <br /> monitoring period. <br /> i <br /> i <br /> i <br /> i <br /> i <br />