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DRAFT [TENTATIVE] WASTE DISCHARGE REQUIREMENTS ORDER R5-2023-OOXX 30 FORWARD, INC. FORWARD LANDFILL SAN JOAQUIN COUNTY 102. Salinity. For the purpose of this evaluation, TDS is the representative of overall salinity. Effluent TDS concentrations of the effluent were reported in the Discharger's quarterly Cannery Waste Land Application Area Monitoring Reports. The Basin Plan states that the WQOs for the land use area is 450 mg/L. Upgradient concentrations of TDS show an increasing trend for AMW-37S, stable trend for AMW-40S, and a decreasing trend for AMW-41 S. Downgradient concentrations for AMW-44, AMW-45 and AMW-46 show a stable concentration trend. Effluent concentration of total suspended solids, as measured during the cannery season from 2014 to 2020, is approximately 14,761 mg/L. Cannery waste discharge with respect to TDS does appear to be degrading groundwater beyond existing conditions at this time. Based on the available data, the Discharger may choose to participate in the P & O Study (Option 2) for the Salt Control Program. 103. Effluent data is not available for TKN, nitrate, nitrite, manganese, arsenic, and iron. This Order requires the Discharger to report these constituents in the quarterly Cannery Waste Land Application Area Monitoring Report in order to determine the overall impact that the cannery waste has on the land application area. 104. AMW-37S, AMW-40S, AMW-41 S, AMW-44, AMW-45, and AMW-46 need to be sampled for Total Nitrogen, TKN, nitrite, Total Mn, Total As, and Total Fe in order to determine if groundwater degradation is occurring with the land application area. This Order requires the Discharger to report these constituents in the Quarterly Water Quality Monitoring Report. 105. Consistent with Title 27, this Order requires the Error! Reference source not found. to maintain the Facility to contain waste within WMUs, thereby preventing degradation of water quality. To the extent that there are releases from Facility WMUs, will be required to address such releases through a Corrective Action Program. (See Title 27 sections 20385, 20415, 20430). Unit Closures 106. On July 2021, the Discharger submitted a Preliminary Closure and Post-Closure Maintenance Plan (Preliminary CPMP). The closure sequence for the Facility is intended to be implemented in 5 stages, Stages I through V. Stage I has been divided into 3 phases. See closure dates specified in Table 8.