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r-� U_ r-- r-- Draft Supplemental Environmental Impact Report Page II-27 Forward Inc.Landfill 2014 Expansion Project landfill administrative implementation of the seismic design measures designed to meet CCR Title facilities, scale house, 27. groundwater treatment system, composting storage, and support facilities. G.3. Increased erosion Proposed as Part of the Project. Less than and sedimentation could Significant occur,particularly The applicant's Joint Technical Document(2007) section 7 references an during the construction erosion-control plan that delineates various actions to minimize erosion and phases of the landfill, sedimentation,including maintaining the effectiveness of the surface due to grading and drainage control structures by keeping drainage ditches clear of debris and borrow soil excavation excessive vegetation and by making repairs, as necessary,to correct the and transport operations. effects of physical damage, erosion, settlement,or other events detrimental to effective operation of the drainage control system, and appropriate construction,landscaping, and maintenance of graded slopes and subsurface drainage systems. As part of that plan,grading operations would be scheduled to avoid the rainy season and be implemented by interim engineering control measures. Before grading is stopped, slopes would be directed to carry runoff to areas where erosion and sedimentation can be controlled. Truck beds would be hosed down to reduce soil spillage on paved roads and wind-blown dust. Relocation of Littlejohns Creek could lessen the sedimentation potential to the creek. • Completed cells will be stabilized by the planting and maintenance of drought-resistant grasses. This will inhibit wind and water erosion and maximize the fertility of the soil in order to facilitate revegetation. • Temporary plantings, geofabric drapes, and erosion-preventing diversions of surface water will be constructed as appropriate on temporary slopes. • Regular operational and post-closure monitoring of erosion control structures and plantings will be done for a minimum of five years.