EPA Approves Missouri's Updated Air Construction Permit Regulations
Published Date: 4/23/2026
Rule
Summary
The EPA just gave a thumbs-up to Missouri’s updated rules for construction permits that keep the air clean. This means businesses building or changing air pollution sources will see new fees and clearer rules starting May 26, 2026. These changes won’t mess with Missouri’s air quality goals but will make the permit process smoother and fairer.
Analyzed Economic Effects
4 provisions identified: 1 benefits, 0 costs, 3 mixed.
Missouri construction permit fee changes
If you own or operate a facility in Missouri that needs a construction permit for air emissions, the state updated the fees for applying for and receiving those permits. The state rule was effective February 28, 2025, and the EPA made the revised rule federally enforceable on May 26, 2026.
Removal of voluntary-permit subsection
Missouri removed subsection (1)(B) from 10 CSR 10-6.060, which had provided the ability for facilities to apply for and receive voluntary permits but was never approved into the SIP. This change was included in the state submission dated March 19, 2025 and is part of the federally approved SIP.
Missouri permit rules now federally enforceable
The EPA approved Missouri's revisions to 10 CSR 10-6.060 and incorporated them by reference so they are "fully federally enforceable under sections 110 and 113 of the Clean Air Act" as of the EPA effective date, May 26, 2026. The underlying state rule had an effective date of February 28, 2025.
EPA certifies limited small-entity impact
The EPA certified that this SIP approval "is not having a significant economic impact on a substantial number of small entities" under the Regulatory Flexibility Act. The EPA also states the action does not contain an unfunded mandate or significantly affect small governments.
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