The report describes and assesses the potential impact of air emissions, wastewater effluents, and solid wastes from dry-bottom utility boilers firing pulverized bituminous coal. Consuming about 320 million metric tons of the coal per year, this is the primary method of firing coal in utility boilers. Air emissions were characterized from literature data, supplemented by field sampling. Significant emissions from coal combustion were particulate matter, SOx, NOx, hydrocarbons, polycyclic organic materials, and a number of elements emitted as particles and vapors. The potential environmental impact of each emission species (after passing through state-of-the-art controls) was individually assessed using a calculated quantity known as ambient source severity (the ratio of the maximum ground level concentration--determined through dispersion equations--to an ambient environmental goal). No species were found to have an ambient source severity greater than 1.0; NOx (0.97) and SOx (0.93) had the highest severities. It was estimated that the human population around an average source in this category exposed to an ambient severity greater than 0.05 was about 300,000 persons for NOx and SOx. Pollutant concentrations were also determined in wastewater and solid waste streams. Effluent source severities and solid waste discharges were both found to be minor, with controls.