Coal Combustion Residuals (CCRs) are the byproducts generated when coal is burned to produce electricity. These materials include ash, slag, and other residues that remain after the combustion process. CCRs can contain various heavy metals and other substances, which may pose environmental and health risks if not managed properly. Proper management of CCRs is essential to prevent contamination of soil and water sources. Many power plants use methods like landfilling or recycling to handle these residues. Regulations are in place to ensure that CCRs are disposed of safely, minimizing their impact on the environment and public health.