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ice'. v. ,. Drainage ditches will be used during construction of cells and lifts. The filling of solid waste in conformance with the lift sequence and the filling plan is an ongoing construction project. Therefore, the drainage ditches near the active solid waste deposition area will require greater maintenance to insure their continued efficient operation. Ditches should be inspected at minimum intervals of one month or after a 4 - inch inch storm event. Stone, fill material, siltation, and plant growth should be periodically cleared from all ditches to remove any obstruction to flow. If erosion occurs on the sideslopes or bottom of the ditches, they should be repaired and reconstructed to their original (design) configuration. Culverts should be inspected monthly and after every rainfall event which exceeds four inches. The inspection should include a visual check for undermining of aprons and approach channels, undermining around the culvert, excessive erosion of the approach section, and sedimentation near the exit of the culvert. The stormwater management pond will require general maintenance to insure proper operation. This general maintenance will include, but not be limited to, repairing any portion of the pond which may become eroded due to extreme surface water runoff flows, keeping discharge pipes clear of sediment or obstructions, and maintaining vegetative growth on the sideslopes, where possible. Surface Water Drainage Control System The operation of a sanitary landfill requires that particular attention be paid to the handling of surface runoff during initial site preparation and interim landfill phases, as well as for the completed landfill. Water that percolates through the surface of a sanitary landfill, and comes in contact with decomposing refuse, can result in the generation of leachate. In order to reduce the amount of leachate that is generated and vireo F-35 1 1 1 1