Although each of the EPA regional offices has primary responsibility for implementation of the Administrator's Federal enforcement policy, the Division of Stationary Source Enforcement is able to provide uniform guidance to the regional office personnel involved in Federal enforcement activities by maintaining a national overview of the compliance status of air pollution sources. In order to supplement the information compiled on coal-fired industrial boilers (CFIB), a comprehensive study was conducted by York Research Corporation. Specific tasks were the location and identification on a state-by-state basis of all existing CFIB of heat input capacity of 35MM BTU/hr or greater. Basic operating data, fuel specifications and consumption, air pollution emission data, and current compliance schedule were compiled for each facility. The report contains the results of the contractor's efforts between May and December, 1976, toward the development of a nationwide air pollution control compliance profile and inventory for this important source category.