Laserfiche WebLink
II. Project Description <br /> Intermediate covers may require similar erosion control features as final closure. Long term <br /> d <br /> intermediate covers could use vegetative cover,silt fences,and interception benches to minimize <br /> erosion. Erosion control measures may be required for the borrow area side slopes;however, <br /> slope lengths would be relatively short and all runoff sediments would be contained within the <br /> borrow <br /> All runoff from the landfill would be routed to the surface water detention facility. This <br /> detention facility would allow much of the sediment to settle out prior to discharge. Based on <br /> predicted soil loss,annual sediments from soil loss would have minimal impact on the pond's <br /> storage capacity. <br /> .c�,trface Water Control <br /> Surface water control includes protecting the landfill from flooding of the North Branch of the <br /> South Fork of Little Johns Creek and from surface water run-on and properly handling surface <br /> water run-off from the landfill closure areas. <br /> Descriptions for pumping this tank after storms would be included in the final operations plan for <br /> the facility.Another design option includes enclosing this facility,allowing for the stormwater to <br /> be collected with that from the scale house. The design of the surface water control system for <br /> landfill run-off includes stormwater from the scale house. <br /> As previously mentioned,the North Branch of the South Fork of Little Johns Creek would be <br /> realigned to the north and west of the existing landfill,to exit the landfill at the same location at <br /> which it now exits. The realignment,would increase the length of the creek by 290 feet and <br /> include a proportionate reduction in the slope of the channel. After realignment the creek would <br /> be lined with a geomembrane liner covered with dirt and riprap. <br /> Realigning and lining the creek would eliminate flood plain areas from the horizontal expansion <br /> areas;eliminate the primary potential run-on source from the horizontal expansion areas,allow <br /> for maximum use of the landfill;eliminate the potential for subsurface water migration into the <br /> existing landfill;and eliminate the potential for groundwater and landfill gas into the surface <br /> water of the North Branch of the South Fork of Little Johns Creek. <br /> The existing and proposed landfill would have a perimeter surface water ditch system to route <br /> landfill run-off to the detention facility and intercept any surface water run-on that could be <br /> 11.15 <br />