Decision Analysis of Coal Ash Disposal Technologyby D. Warner North, Decision Focus Inc, Los Altos, CA, USA,
E. Victor Niemeyer, Decision Focus Inc, Los Altos, CA, USA,
Stephan G. Regulinski, Decision Focus Inc, Los Altos, CA, USA,
Abstract: Coal-fired power plants produce a number of solid waste streams in the course of their operation. These coal combustion by-products (CCBPs) are composed of fly ash, bottom ash and boiler slag, and sludge from flue gas desulfurization. CCBPs contain low-level concentrations of substances of concern, such as arsenic, boron, and selenium. The presence of these potentially toxic elements raises the question of whether CCBP disposal could adversely affect groundwater. EPRI is currently developing an analytical tool based on decision analysis for cost/benefit analysis of CCBP disposal options. It is intended to help regulators and the electric utility industry reach cost-effective choices in this area. The methodology is reviewed.
Subject Headings: Coal | Wastes | Water pollution | Water resources | Power plants | Fly ash | Toxicity | Groundwater
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