Twenty-Year Performance of a Mixed LLRW/RCRA Waste Disposal Facility

摘要

A mixed low-level radioactive waste (LLRW) and Resource Conservation and Recovery Act (RCRA) waste on-site disposal facility (OSDF) was constructed as part of the remediation of the U.S. Department of Energy Feed Material Production Center in Fernald, Ohio. The 56-acre (lined area) OSDF is fully constructed, filled with waste, and closed. The facility was operated from November 1997 until October 2006, with operational data available from January 2000 to the present, a period of nearly 20 years. Post-closure monitoring is ongoing. This paper presents the design, construction, and performance of the OSDF, with a primary focus on its operational performance. Available performance data for the OSDF's leachate collection system, leakage detection system, and horizontal-well vadose zone monitoring system are presented and evaluated. Observations from post-closure monitoring of the OSDF are described. The data and information indicate that the OSDF is performing well and is not impacting groundwater or surface water at the site.