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qf 7.; REPUBLIC SERVICES Mr. Brendan Kenny Engineering Geologist Central Valley Regional Water Quality Control Board 11020 Sun Center Drive, Suite 200 Rancho Cordova, CA 95670 January 31, 2017 RE: Forward Landfill—Fourth Quarter 2016 Dear Mr. Kenny: In accordance with WDR Order No. R5-2014-0006, Forward Incorporated (Forward) is pleased to submit this Fourth Quarter 2016/Annual Monitoring Report for the Forward Landfill. According to the Forward Landfill Operations Manager, standard observations have been conducted weekly during the reporting quarter. The Forward Landfill Operations Manager also reported that no surface water was discharged from the facility during the reporting period. During the Fourth Quarter 2016 monitoring period, no notices of violation (NOVs)were issued by the Central Valley Regional Water Quality Control Board (RWQCB)or the San Joaquin County Environmental Health Department. For the Forward Unit, environmental monitoring for the Fourth Quarter 2016 yielded results similar to previous quarters. A non-statistical indication of release was identified at wells MW-2A as a result of two volatile organic compounds (VOCs) measured at trace concentrations; MW-16 as a result of one VOC measured at a quantifiable concentration; and at well MW-17 as a result of two VOCs measured at a quantifiable concentrations and one VOC measured at a trace concentration. However, all of the VOCs are well below maximum contaminant levels. Of note, these organic constituents have been previously confirmed and are currently in "Tracking Mode". For the inorganic monitoring parameters, concentration limits (CLs) were exceeded at wells MW-2A, MWA 0, MWA 3, MWA 5, MWA 7, MWA 8, MW-19, MW-22, and MW-24. Verification sampling for the inorganic CL exceedances is scheduled for January 2017. For constituent concentrations in "Tracking Mode" an increasing trend was calculated for diisopropyl ether at well MW-16, and carbon tetrachloride and chloroform at well MW-17. Surface water stations were reported dry during the fourth quarter 2016 monitoring period. Vadose zone monitoring stations were also reported dry or had an insufficient volume of soil-pore liquid to sample. Groundwater quality conditions beneath the Austin Unit were generally similar to historical results during the Fourth Quarter 2016 monitoring period. Excluding suspected laboratory contaminants, CL exceedances and/or non-statistical indication of release were identified at DMP wells AMW-6, AMW-12 during the fourth quarter 2016 monitoring period. It is recognized that well AMW-6 should have been identified as a CAP well in the M&RP. For the CAP/evaluation wells, 17 of 28 wells reported one or more VOCs exceeding a PQL, with CAP well AMWA having the greatest number of VOCs (12), including 11 measured above a PQL. All surface water stations and lysimeters were reported dry or there was an insufficient volume of soil-pore liquid for analysis during the fourth quarter 2016 monitoring period. Under the existing CAP, the Groundwater Treatment Facility pumped 19.4 million gallons of groundwater removing an estimated 0.85 pounds of VOCs.