Groundwater Corrective Action Assessment Using Fate and Transport Modeling

摘要

The CCR Rule (Title 40 Code of Federal Regulations Part 257, Subpart D, Standards for the Disposal of Coal Combustion Residuals in Landfills and Surface Impoundments) stipulates that an assessment of corrective measures must be initiated within 90 days of identifying a constituent listed in Appendix IV at a statistically significant level exceeding the groundwater protection standard (when an alternate source is not identified), or immediately upon detection of a release. The assessment must consider factors including performance, reliability, safety, and time needed for implementation. The results are to be publicly available and discussed in a public meeting. Based on the assessment, the owner/operator must select a remedy that meets objectives including protection of human health and environment, meet groundwater protection standards, and control/eliminate future releases.