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WASTE DISCHARGE REQUIREMENTS 18- FORWARD INCORPORATED WASTE MANAGEMENT FACILITY CLASS II LANDFILLS CLASS III LANDFILLS CLASS II SURFACE IMPOUNDMENT CLASS II LAND TREATMENT UNIT SAN JOAQUIN COUNTY 9. The Discharger shall maintain waste containment facilities and precipitation and drainage controls, and shall continue to monitor ground water, leachate, the vadose zone, and surface waters per Monitoring and Reporting Program No. throughout the post- closure maintenance period. 10. The post-closure maintenance period shall continue until the Board determines that remaining wastes in all WMUs will not threaten water quality. 11. Within six months of the adoption of these requirements the Discharger shall submit to the Board for approval a closure and post-closure maintenance plan, describing the methods and controls to be used to assure protection of the quality of surface and ground water of the area during final operations and during any proposed subsequent use of the land. The closure plan must include: 1) an estimate of closure and post-closure maintenance costs; 2) a proposal for a trust fund or equivalent financial arrangement to finance closure and post-closure; and 3) the amount to be deposited in the trust fund or equivalent financial arrangement each year. This report shall be prepared by or under the supervision of a California registered civil engineer or certified engineering geologist, updated annually, and submitted to the Board by the 15th day of January each year. The method used to close each WMU at the site and maintain protection of the quality of surface and ground waters shall , as a minimum, comply with waste discharge requirements established by the Board and the most current version of the closure and post-closure maintenance plan which has been approved by the Board. The final report shall be submitted at least 180 days prior to final closure of the site. 12. The Discharger shall comply with the Standard Provisions and Reporting Requirements, dated 1 September 1985, which are hereby incorporated into this Order. 13. The owner of the waste disposal site shall have the continuing responsibility to assure protection of usable waters from discharged wastes and gases and leachate generated by discharged wastes and gases and leachate generated by discharged waste during the active life, closure, and post-closure maintenance period of the .WMUs and during subsequent use of the property for other purposes.