Tag Archives: Coal combustion residuals
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Evaluation of Potential Failure Modes for Coal Combustion Residual Impoundments
Prompted by recent major failures at coal combustion residual impoundments, this study examined U.S. Environmental Protection Agency data on more than 400 impoundments to assess the possible causes of failures.
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Relative Impact Framework Application for a Hypothetical Coal Combustion Residual Surface Impoundment
In the next decade, many surface impoundments for coal combustion residuals are expected to close, with two main options: (1) capping and closing the existing impoundment and (2) transporting the residuals to a lined landfill and then closing the impoundment and landfill. EPRI has developed a comprehensive framework to assess the human health and environmental […]
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Corrective Action for Closed and Closing Ash Ponds
Over the next several years, the federal Coal Combustion Residuals Rule will trigger the closure of many utility-operated coal ash ponds, and groundwater monitoring will likely reveal the need for corrective actions such as barrier walls and geochemical manipulation. This report identifies and evaluates groundwater-related corrective actions that could be integrated with pond closure, with […]
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Groundwater Monitoring Guidance for the Coal Combustion Residuals Rule
This EPRI report describes groundwater monitoring requirements of the U.S. Environmental Protection Agency’s rule to regulate disposal of coal combustion residuals in landfills and impoundments. It discusses strategies to develop site-specific monitoring, groundwater sampling and laboratory analysis, statistical analysis, reporting, and more.
