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DRAFT [TENTATIVE] WASTE DISCHARGE REQUIREMENTS ORDER R5-2023-OOXX 26 FORWARD, INC. FORWARD LANDFILL SAN JOAQUIN COUNTY soluble reduced form. This condition can be exacerbated by acidic soils and excess moisture. If reducing conditions do not reverse as the percolate moves down through the vadose zone, the dissolved metals (primarily iron, manganese, and arsenic) can degrade shallow groundwater quality. Many aquifers contain enough dissolved oxygen to reverse the process. Salt and Nitrate Control Program Reopener 91. On 31 May 2018, the Central Valley Water Board adopted Basin Plan amendments incorporating the Salt Control Program (SCP) and Nitrate Control Program (NCP). The State Water Board conditionally approved the amendments on 16 October 2019 (State Water Board Resolution 2019-0057). The effective date of the Basin Plan amendments was 17 January 2020, the Notice of Decision filing date following approval by the Office of Administrative Law (OAL) (OAL Matter No. 2019-1203-03). For those components subject to United States Environmental Protection Agency (USEPA) approval, the effective date was 2 November 2020. On 10 December 2020, the Central Valley Water Board adopted revisions to the Basin Plan amendments (Resolution R5-2020-0057). The State Water Board conditionally approved these revisions on 1 June 2021 (State Water Board Resolution 2021-0019). The effective date of the revisions to the Basin Plan amendments was 10 November 2021, the Notice of Decision filing date following OAL approval (OAL Matter No. 2021-0929-05S). Surface-water related revisions to the Basin Plan amendments are pending USEPA approval. The overarching goals and priorities of these programs are to (1) ensure safe drinking water supply; (2) reduce salt and nitrate loading so that ongoing discharges neither threaten to degrade high quality waters absent findings by the Central Valley Water Board nor cause or contribute to exceedances of WQOs; and (3) implement long-term, managed restoration of impaired water bodies. 92. For the SCP, the Central Valley Water Board will issue a Notice to Comply requiring the Discharger to submit a Notice of Intent specifying whether the Discharger intends to participate in the Conservation Salinity Permitting Approach or the Alternative Salinity Permitting Approach (i.e., Prioritization & Optimization (P&O) Study). In the interim, this Order requires the Discharger to maintain existing salt discharge levels and prohibits the Discharger from causing or contributing to condition of pollution and/or nuisance, as those terms are defined in Water Code section 13050. After receiving the Discharger's Notice of Intent to participate in the SCP, the Central Valley Water Board will update these WDRs to reflect the requirements of the Discharger's chosen regulatory pathway. 93. For the NCP, the Facility falls within the San Joaquin Valley— Eastern San Joaquin Basin 5-022.01, a Priority 2 Basin. Notices to Comply for Priority 2 Basins will be issued in 2023-2024 and will require the Discharger to submit a Notice of Intent specifying whether the Discharger intends to comply with the