RULES: Carbon Monoxide, Photochemically Reactive Materials, Hydrocarbons, and Related Materials Standards
Early Stakeholder Outreach —
OAC Chapter 3745-21 – Carbon Monoxide, Photochemically Reactive Materials, Hydrocarbons, and Related Materials Standards
What does OAC Chapter 3745-21 cover?
The rules in Ohio Administrative Code (OAC) Chapter 3745-21 establish requirements for the control of emissions of volatile organic compounds (VOCs) and carbon monoxide (CO) from stationary emission sources. VOCs are a precursor compound from which ozone is formed. Ozone is one of the six criteria pollutants for which a National Ambient Air Quality Standard (NAAQS) has been established under the Clean Air Act. CO is also one of the six criteria pollutants for which a NAAQS has been established. The intent of these rules is to limit emissions of VOCs and CO to allow the state of Ohio to attain and maintain the NAAQS for ozone and CO.
What changes are being considered?
At this time, Ohio EPA is considering making minor changes to the rules in this chapter to correct typos and address any formatting issues. Ohio EPA will also consider other changes, as warranted, based on comments received.
Who will be regulated by these rules?
The rules in this Chapter apply to all point sources emitting VOCs in the state of Ohio.
How can I provide input?
The Agency is seeking stakeholder input on OAC rules 3745-21-01 through 3745-21-28. When preparing your comments, be sure to:
• Explain your views as clearly as possible
• Describe any assumptions used
• Provide any technical information and/or data used to support your views
• Explain how you arrived at your estimate for potential burdens, benefits or costs
• Provide specific examples to illustrate your views and
• Offer alternatives
Written comments will be accepted through close of business January 30, 2026.
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