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Water Quality Monitoring Report Forward Landfill ® EXECUTIVE SUMMARY Forward Incorporated (Forward) is pleased to submit the subject water quality monitoring report for the Forward Landfill in compliance with reporting requirements of the Regional Water Quality Control Board - Central Valley Region (RWQCB) Waste Discharge Requirements (WDRs) Order Number 115-2014-0006. This report presents quarterly sampling results for the reporting period dating from July 1 to September 30, 2015 (third quarter 2015). According to the Forward Landfill Operations Manager, standard observations have been conducted weekly during the reporting period. The Forward Landfill Operations Manager also reported that no surface water was discharged from the facility during the reporting period. During the third quarter 2015 monitoring period, no notices of violation (NOVs) were issued by the San Joaquin County Environmental Health Department. For the Forward Unit, environmental monitoring for the third quarter 2015 yielded results similar to previous quarters. A non-statistical indication of release was identified at well MW- 16 as a result of one volatile organic compound (VOC) measured at a quantifiable concentration, and at well MW-17 as a result of two VOCs measured at quantifiable concentrations. For the inorganic monitoring parameters, concentration limits (CLs) were exceeded at wells MW-10, MW-18, and MW-19. Verification sampling for the organic and inorganic CL exceedances is scheduled for October 2015. Surface water stations were reported dry during the third quarter 2015 monitoring period. Vadose zone monitoring stations were also reported dry or had an insufficient volume of soil-pore liquid for analysis. Groundwater quality conditions beneath the Austin Unit were generally similar to historical results during the third quarter 2015 monitoring period. Although it is recognized that well AMW-6 is a Corrective Action Program (CAP) well mis-identified as a Detection Monitoring Program (DMP) well, five inorganic CLs were exceeded and a non-statistical indication of release for VOCs was identified at well AMW-6. With the exception of AMW-6, no other VOCs were detected in DMP wells. For the CAP/evaluation wells, 15 of 28 wells reported one or more VOCs exceeding a PQL, with CAP well AMW-1 having the greatest number of VOCs (15), including 11 measured above a practical quantitation limit. All surface water stations were reported dry during the third quarter 2015 monitoring period, and vadose zone monitoring stations were also reported dry or had an insufficient volume of soil-pore liquid for analysis. Under the existing CAP, the Groundwater Treatment Facility pumped 15.9 million gallons of groundwater removing an estimated 1.29 pounds of VOCs. M:\2015.0014\ExecSum 3Q15.docx E-1