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Page 13 Consolidated Forward Inc. Landfill site. The surface-water collection drain system will be designed to divert the water to the storm water collection basin in the southwest corner of the current Austin Road Landfill,at times when enough surface water accumulates to have discharged into the collection basin. All waste at the proposed Forward Landfill will be separated fresm the north and south branches of Littlejohns Creek by a levee system or other acceptable method designed to protect the site from a 100 year flood event. The project includes channel reconfiguration and localized flood protection berms to isolate the landfill surfaces from floodwaters. The project design lderreplacement b�ovolume in an easement along relocated North Branch of the Southf South Littlejohn Creek. The channel and floodplain storage easement are designed to acs-ommodate the 100-year,24- hour storm. The design also includes a three-foot freeboard. 45 (F.2) Proposed as Part of the Project: The JTD articulates the programs of drainage control structures and monitoring to inhibit erosion and sedimentation. Proposed structural controls include rhe drainage control system and daily cover. Operational controls include maintenance of the drainage system by keeping ditches clear of debris and excessive vegetation, and making needed repairs to drainage structures. Corrective measures will be implemented if inspections show excessive erosion or damage to drainage channels. Eroded areas will be mitigated by removing loose debris followed by replacement,regrading,and compacting the area- 'Monitoring and protection against sediment from entering the Littlejohn stream channel eDl be implemented, including the diversion of part of Littlejohn Creek farther away from the Iand.filled area. In order to minimize sediment transport to the Littlejohms Cree3r landfill slopes,ridgetops, and peripheral areas will be revegetated to inhibit erosion. 46 (F.3) Proposed as Part of the Project: —both over the top of the The liner and leachate collection system for the on existing unlined Austin Road landfill and the extension of the _ g leachate collection system at Forward—have been designed to meet or exceed the regulatory requirements as- shown and discussed in the applicants JTD. The JTD and the adequacy of the-leachate collection system and associated monitoring are under review b`the RWQCB. The regulatory required separation between the liner and grounN ater will be implemented to allow for chemicals in the leachate to attenuate before reaching the groundwater,should the leachate breach the collection system. The project design includes a leak detection system under the_:=rps. The liner system will be overlain by a protective operations la.-er consisting of a one-foot thickness of soil and a one-foot thick gravel layer that serves as the leachate collection layer. 0 This two-foot layer will serve to protect the liner system from sharp or jagged materials in the waste.