tailieunhanh - Evapotranspiration covers for landfills and waste sites - Chapter 12

Sau khi hoàn thành xây dựng là, duy trì và giám sát được yêu cầu phải đảm bảo các bãi rác đó bao gồm Bảo vệ sức khỏe con người và môi trường cho nhiều thập kỷ hoặc thế kỷ. Trong nhiều cách, bảo trì năm của thoát hơi nước (ET) bao gồm là không khác nhau từ thông thường đó là cần thiết để bao gồm bãi rác hoặc khắc phục hậu quả dài hạn khác nỗ lực. Bốn chủ đề cơ bản là quan trọng để bảo trì bãi rác (1) bao gồm Liêm, (2) quản lý nước. | 12 Maintenance and Monitoring After construction is complete maintenance and monitoring are required to assure that the landfill cover protects human health and the environment for decades or centuries. In many ways maintenance of an evapotranspiration ET cover is no different from that needed for a conventional landfill cover or other long-term remediation effort. The four basic topics important for landfill maintenance are 1 cover integrity 2 leachate management 3 groundwater monitoring and 4 landfill gas monitoring and management. Of the four the cornerstone of ET cover maintenance is cover integrity. Maintaining the integrity of the cover assures that it can function as designed. Good cover integrity minimizes the possibility for groundwater quality deterioration unexpected leachate concerns and other potential problems. McBean et al. 1995 Koerner and Daniel 1997 ITRC 2003 and United States federal and state regulations discuss maintenance and monitoring of conventional landfills and their covers. This chapter focuses on concepts that are important to cover integrity for the ET landfill cover. DEEP PERCOLATION MONITORING In this book deep percolation PRK is the amount of precipitation passing per unit of time through the landfill cover into the waste in a landfill see Chapter 6 . There is no requirement to measure PRK through conventional-barrier landfill covers. Barrier covers that satisfy the design requirements contained in United States Environmental Protection Agency . EPA rules and regulations and are designed with the aid of the Hydrologic Evaluation of Landfill Performance HELP model are accepted as adequate. No further proof of performance is required after the cover is built and accepted. This policy has resulted in apparent satisfactory performance by a large number of conventional-barrier landfill covers currently installed on landfills. Measurements included in research at 24 conventional-barrier landfill covers are available Table .