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DRAFT [TENTATIVE] WASTE DISCHARGE REQUIREMENTS ORDER R5-2023-OOXX 25 FORWARD, INC. FORWARD LANDFILL SAN JOAQUIN COUNTY Notification shall include a time table for remedial or corrective action necessary to reduce leachate production (Title 27, section 20370 subdiv. (c)). Land Application of Cannery Wastes 86. Solid cannery waste will be discharged within the designated land application area (see Attachment C—Cannery Waste) spread evenly and allowed to dry. Liquid waste (rinsate water) will be delivered in tanker trucks and slowly discharged over the land application area. Small berms will be constructed to maintain dry pathways for tanker trucks. The dried wastes (liquid and solid) will be disked approximately 4- to 6-inches into the ground. Rapid evaporation prevents anaerobic odors and interrupts the life cycle of vectors (flies). Excess cannery rinsate water may be discharged to surface impoundments WMU F West and WMU F North. 87. Excessive application of decomposable organic waste to land can create objectionable odors, soil conditions that are harmful to crops and degradation of underlying groundwater with nitrogen species and certain metals, as discussed below. Such groundwater degradation can be prevented or minimized through implementation of best management practices (BMPs) which include planting crops to take up plant nutrients and maximizing oxidation of biochemical oxygen demand (BOD) to prevent nuisance conditions. 88. The Discharger is required to implement the following BMPs for cannery waste: a. The ground surface will be prepared prior to the application of waste. b. Waste will be spread thinly, no more than 3 inches deep, to ensure complete drying within five days. C. Waste will be turned twice daily with a cultivating device to facilitate drying. 89. Groundwater degradation and pollution with nitrogen species such as ammonia and nitrate can be prevented by minimizing percolation below the root zone of crops and ensuring that the total nitrogen load does not exceed crop needs over the course of a typical year. Where there is sufficient unsaturated soil in the vadose zone, excess nitrogen can be mineralized and denitrified by soil microorganisms. 90. Excess BOD is developed by excessive organic waste application that depletes oxygen in the vadose zone creating anoxic conditions. At the surface, this can result in nuisance odors and fly-breeding. When insufficient oxygen is present below the ground surface, anaerobic decay of organic matter can create reducing conditions that convert naturally occurring metals from insoluble to a more