사용종료매립지의 사후관리종료기준에 관한 고찰

This paper aims to review the aftercare completion criteria for closed landfills described in the literature. Our objectives are to characterize the waste stabilization phases and specific approaches to evaluate the completion of landfill aftercare and to review country-specific regulatory procedures and technical guidelines. The attainment of functional stability implies that a closed landfill does not pose a threat to human health and the environment in the absence of active aftercare control. The functional stability can be assessed according to three categories: (1) target values, (2) risk assessment, and (3) performance-based. Country-specific aftercare completion criteria should be developed with consideration of functional stability in Korea. Due to the limitations on the deposition of combustible materials in Korea, soil and groundwater impact by leachate emissions are more strictly monitored and controlled than landfill gas emissions. However, the maximum leachate head on a liner (as measured at the lowest point of the liner) for solid waste landfills is limited to 2.0m during the aftercare period in Korea. Thus, the leachate head needs to be eliminated at the time of aftercare completion.