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WASTE DISCHARGE REQUIREMENTS 6 J. R. SIMPLOT COMPANY LATHROP, SAN JOAQUIN COUNTY a. require a higher level of containment than provided by the unit, b. are 'restricted hazardous wastes' or c. impair the integrity of containment structures, is prohibited. B . DISCHARGE SPECIFICATIONS GENERAL SPECIFICATIONS 1 . Wastes shall only be discharged into, and shall be confined to, the WMUs specifically designed for their containment and treatment, as stated in Finding Nos. 10 through 13. 2. A minimum separation of five (5) feet shall be maintained between wastes or leachates and the highest anticipated elevation of underlying ground water including the capillary fringe. 3. Within 90 days of adoption of these requirements all wells within 500 feet of the unit shall have sanitary seals which meet the requirements of the San Joaquin County Health Department or shall be properly abandoned. A record of the sealing and/or abandonment of such wells shall be sent to the Board and to the State Department of Water Resources. 4. Neither the treatment nor the discharge shall cause a pollution or nuisance as defined by the California Water Code, Section 13050. 5. The discharge shall not cause degradation of any water supply. GENERAL WMU CONSTRUCTION 6. Materials used to construct liners shall have appropriate physical and chemical properties to ensure containment of discharged wastes over the operating life, closure, and post-closure maintenance period of the WMUs. 7. Materials used to construct leachate collection and removal systems shall have appropriate physical and chemical properties to ensure the required transmission of leachate over the life of the WMUs and the post-closure maintenance period. 8. Leachate collection and removal systems shall be designed, constructed, and maintained to collect twice the anticipated daily volume of leachate generated by the WMU and to prevent the buildup of hydraulic head on the underlying liner. The depth of fluid in any LCRS sump shall be kept at the minimum needed to ensure safe pump operation, as specified in the approved engineered drawings and specifications. SUPERVISION AND CERTIFICATION OF CONSTRUCTION 9. All containment structures shall be designed and constructed under the direct supervision of a California registered civil engineer or a certified engineering geologist and shall be certified by that individual as meeting the prescriptive standards and performance goals of Chapter 15 prior to waste discharge.