Prairie State Generating Co. LLC is seeking a Section 401 Clean Water Act permit from the Illinois Environmental Protection Agency for a new coal waste disposal area at its power plant in Washington County, Illinois.
“Prairie State is proposing to construct a 500-acre monofill on a 740-acre site, referred to as the Near Field Monofill, to dispose of coal fly and bottom ash, flue gas desulfurization (FGD) gypsum, and mine waste, collectively referred to as coal combustion residuals (CCR),” said a Dec. 19 agency notice. “The CCR is generated by Prairie State’s 1,600 MW state-of-the-art coal-fueled power plant and mine located northeast of Marissa, IL in Washington County.
“Prairie State anticipates a minimum 40-year life for the power plant. In order to meet the long-term disposal needs of the power plant, Prairie State needs a dedicated on-site monofill facility with a total storage capacity to handle the 40-plus years of anticipated waste. Currently, Prairie State estimates 3.94 million tons of CCR and 350,000 tons of mine breaker reject will be produced per year at the new plant. Over the anticipated 40-year lifespan of the plant, a total storage capacity for 157.6 million tons of CCR and 14 million tons of mine breaker reject is required.”
The agency is taking comment on the proposed permitting until Jan. 9.