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R� <br /> REPUBLIC <br /> t!►� SERVICES <br /> Mr. Brendan Kenny <br /> Engineering Geologist <br /> Central Valley Regional Water Quality Control Board <br /> 11020 Sun Center Drive, Suite 200 <br /> Rancho Cordova, CA 95670 <br /> January 30, 2018 <br /> RE: Forward Landfill—Fourth Quarter 2017 <br /> Dear Mr. Kenny: <br /> In accordance with WDR Order No. R5-2014-0006, Forward Incorporated (Forward) is pleased to submit <br /> this Fourth Quarter 2017/Annual Monitoring Report for the Forward Landfill. <br /> According to the Forward Landfill Operations Manager, standard observations have been conducted <br /> weekly during the reporting quarter. The Forward Landfill Operations Manager also reported that no <br /> surface water was discharged from the facility during the reporting period. During the Fourth Quarter <br /> 2017 monitoring period, no notices of violation (NOVs)were issued by the Central Valley Regional Water <br /> Quality Control Board (RWQCB)or the San Joaquin County Environmental Health Department. <br /> For the Forward Unit, environmental monitoring for the Fourth Quarter 2017 yielded results similar to <br /> previous quarters. A non-statistical indication of release was identified at wells MW-17 as a result of three <br /> quantifiable volatile organic compounds (VOCs) and 4 trace VOCs. Of note, these organic constituents <br /> have been previously confirmed and are currently in "Tracking Mode". For the inorganic monitoring <br /> parameters, concentration limits (CLs)were exceeded at wells MW-15, MW-18, MW-19, and MW-21. All <br /> of the inorganic CL exceedances were placed in "Tracking Mode" and are being evaluated for temporal <br /> trends. For constituent concentrations in "Tracking Mode", increasing trends were calculated for barium, <br /> bicarbonate, magnesium, potassium, and strontium at well MW-10; nitrate-N at well MW-15; chloroform <br /> and trichlorofluoromethane (TCFM) at well MW-17; and sodium at well MW-18. For vadose zone <br /> monitoring stations, no VOC were measured in the soil-pore liquid samples collected from lysimeters W-2 <br /> and LY-BG-1. Surface water stations were reported dry during the fourth quarter 2017 monitoring period. <br /> Groundwater quality conditions beneath the Austin Unit were generally similar to historical results during <br /> the Fourth Quarter 2017 monitoring period. Concentration Limit exceedances and/or non-statistical <br /> indication of release were identified at Detection Monitoring Program (DMP)wells AMW-5R, AMW-6, and <br /> AMW-12 during the Fourth Quarter 2017 monitoring period. It is recognized that well AMW-6 should have <br /> been identified as a Corrective Action Program (CAP) well in the M&RP. For the CAP/evaluation wells, <br /> 18 of 29 wells reported one or more quantifiable VOCs, with CAP wells AMW-1 and AMW-22S having the <br /> greatest number and total concentration of VOCs. All surface water stations and lysimeters were <br /> reported dry or there was an insufficient volume of soil-pore liquid for analysis during the Fourth Quarter <br /> 2017 monitoring period. Under the existing CAP, the Groundwater Treatment Facility pumped 25.9 <br /> million gallons of groundwater removing an estimated 0.70 pounds of VOCs. <br /> • <br />