So, You’ve Built a Landfill for Your Ash Pond Closure, Now What? (Lessons Learned During CCR Landfill Operations)

摘要

Coal Combustion Residual (CCR) landfills constructed to store CCRs from an ash basin closure (closure landfill) have different operational considerations than CCR landfills constructed to store CCRs generated during active power production (generation landfill). Most notably, closure landfills accept wetter ash at a faster disposal rate than generation landfills. Critical Best Management Practices for operating closure landfills include exterior sideslope grade control, interim cover placement methods, Run-On and Run-Off Control Plan compliance, managing contact water at the operational face, moisture control and conditioning, and engineering and construction quality assurance (CQA) oversight. The best management practices benefit the landfill owner by maximizing airspace utilization, reducing risk of exterior sideslope re-work, and reducing the risk of an environmental release.