Missouri Hazardous Air Pollutants: What you need to know

Governing Law and Regulations

National emissions standards for hazardous air pollutants (NESHAP): 40 CFR 61, 40 CFR 63, 10 Missouri Code of State Regulations (CSR) 10-6.075 and 10 CSR 10-6.080

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Construction permits for major sources of hazardous air pollutants (HAPs): 10 CSR 10-6.060(9)

Regulatory Agency

Missouri Department of Natural Resources (DNR) Division of Environmental Quality Air Pollution Control Program

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

• Rules. Missouri does not regulate any hazardous air pollutants (HAPs) in addition to the federally listed pollutants, but the state has developed case-by-case permitting requirements for major sources of HAPs that are not included in a source category specifically covered by the federal standards. Missouri has adopted by reference the federal National Emissions Standards for Hazardous Air Pollutants (NESHAP) rules, including the source-specific NESHAPs, also known as maximum achievable control technology (MACT) standards. The Department of Natural Resources (DNR) periodically updates its adoption of the federal standards to include newly promulgated NESHAPs applicable to sources in the state. For further information, see the national section HAZARDOUS AIR POLLUTANTS.

Administration and enforcement. The Air Pollution Control Program of DNR's Division of Environmental Quality administers and enforces the HAP rules in Missouri.

State Requirements


10 CSR 10-6.060(9)

DNR has developed permitting standards for major sources of HAPs that are not specifically regulated or exempted under a federal standard. Such sources must comply ...

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State Requirements

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Missouri Hazardous Air Pollutants Resources

Hazardous Air Pollutants Products

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