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• A detailed Salt and Trace Metal Management Plan shall be submitted as part of the reclamation plan to ensure that irrigation with reclaimed water is a viable long-term disposal option and to ensure minimization of salts and trace metals that are discharged to surface waters via the agricultural drains. • The location and design specifications for the wastewater storage ponds shall be provided in the Reclamation Plan.The location of agricultural drains within a one-half mile radius of the storage ponds and the sources and characteristics of soil that would be used to construct the ponds shall be identified. The design specifications shall address levee and pond bottom permeability,levee stability,and flood protection. — • An estimate shall be made of the wastewater volume that may seep from the wastewater storage ponds, and an assessment of potential flow paths from pond seepage shall be determined for the interim and — potential permanent reclamation sites. The result of the assessment shall be submitted to the CVRWQCB for determination of whether agricultural drain discharge from land irrigated with reclaimed water would be regulated as a point-source discharge under the NPDES program. The determination by the , CVRWQCB shall be provided in the reclamation plan. If it appears likely that the CVRWQCB would regulate the agricultural drain discharge,then assurance that the discharge would be allowed must be documented prior to approval of the reclamation plan. Mitigation Measure 4.4.2-3 • Beneficial reuse of sewage sludge shall be implemented to the maximum extent possible to minimize — sludge disposal at a landfill or at a dedicated site. • Interim Disposal. If the sludge meets acceptance criteria of a specific landfill,the sludge shall be initially disposed of at an appropriately permitted landfill. Sludge shall meet nonhazardous classification and shall be dried to a minimum of 50 percent solids prior to disposal at a landfill. The duration of landfill disposal shall not exceed two years from the startup of the activated sludge treatment process, unless the sludge disposal program described in Implementation e)concludes that landfill disposal of wastewater sludge is the only viable option. • If landfill disposal of the wastewater sludge were proposed, an agreement or"will serve"letter with a landfill that would accept the sludge for at least the next five years shall be provided with the initial Wastewater Sludge Disposal Plan or subsequent specific plan. If land spreading or dedicated land disposal were proposed,then guarantees of adequate acres for sludge disposal for at least the next five years must be provided. Provisions for sludge disposal shall be updated annually so that there are always firm provisions for disposal for at least five years into the future. Mitigation Measure 4.4.2-5 • The wastewater treatment and storage pond levees shall be capable of withstanding a maximum credible _ earthquake;ponds located within the 100-year floodplain shall prevent inundation due to levee failure along Old River or other nearby waterways, be capable of withstanding the effects of flooding, and shall not impair the structural integrity of existing flood control levees. • The detailed design of the wastewater treatment and storage pond levees shall be included in the Reclamation Plan and initial Development Permit for the Wastewater Treatment Plant, and in all subsequent reclamation plans where additional ponds are proposed. The pond levees within the 100-year flood plain shall meet,as a minimum,the requirements of Section 65.10 Mapping of Areas Protected By Levee Systems,44 CFR Ch. 1 and the design standards specified herein. EDAW College Park at Mountain House Specific Plan III Draft EIR Public Utilities 4.5-24 San Joaquin County