Governing Law and Regulations
Missouri Department of Natural Resources (DNR) Division of Environmental Quality Air Pollution Control Program
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Missouri has developed an air emissions permitting program requiring each source that has the potential to emit an air contaminant above the established thresholds within the state to obtain both a construction permit and an operating permit from the Department of Natural Resources (DNR). In some cases, construction permits and operating permits may be unified into a single document, as can the respective applications. In addition, major sources are required to comply with the applicable provisions of nonattainment New Source Review (NSR) and/or Prevention of Significant Deterioration (PSD), depending on the type and quantity of emissions and the ...