Coal Combustion Residuals
Coal Combustion Residuals (CCR), more commonly known as coal ash, is a unique material demanding knowledge and expertise for proper disposal. HHNT’s extensive experience with waste landfills and CCR disposal helps ensure each project is safe, profitable, and meets regulatory compliance requirements.Coal ash consists of the materials which remain after the burning of coal at power facilities. CCRs can include bottom ash, fly ash, boiler slag and flue gas desulfurized gypsum. These residuals are sometimes hydrated and then transported as a wet slurry from the power plant to storage and disposal facilities. The slurry is allowed to settle in open impoundments or man-made lakes, where solids settle to the bottom and liquid is collected and removed. This type of coal ash management system is the most prevalent type used throughout the southeastern United States. Coal ash may also be dry stacked in piles or landfills, sometimes with environmental controls and sometimes without. The meticulous environmental regulations imposed by local, state, and federal government necessitate more secure and more environmentally concise options for safe, long term storage.