Air Permits
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NR410 Rulemaking
Background Facilities that emit air pollution are federally required to obtain construction permits before being constructed, relocated or modified, unless exempt. The DNR’s New Source Review program assists facilities with meeting this requirement…
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Rulemaking to Revise Chapter NR 439
Background Chapter NR 439 establishes consistent and predictable methods for sources of air contaminants to use when demonstrating compliance with air pollution requirements.
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Air Permit Public Involvement
Notice: Update personal bookmarks to the new links for the buttons below. The Clean Air Act and Wisconsin State Statutes call for public participation and input on air permit actions. The tables below can help the public find these opportunities.…
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Wisconsin Emissions Reduction Credit (ERC) Registry
The Wisconsin Emissions Reduction Credit (ERC) Registry assists facilities looking for emissions offsets to meet Nonattainment New Source Review (NNSR) permitting requirements. Facilities that voluntarily reduce emissions can use those reductions to…
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Air Permit Resources for Businesses
General Overview Permit options Permitting requirements for nonattainment areas PSD class 1 areas Applying for a Permit How to Apply
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Air Permit Search
Notice: Update personal bookmarks to the new link for the button below. Air Permit Search
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Air Pollution Control Operation Permit Renewals FAQ
The following questions and answers explain how to submit an air pollution control operation permit renewal application.
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Registration Permit Options
Registration operation permits (ROP) allow low emitting facilities to quickly register for an air permit. The permits contain facility-wide emission caps as well as monitoring, recordkeeping and reporting requirements. All four registration permit…
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Air Program Publications, Guidance and Policy
Policy, procedural and technical guidance related to the Air Program can be found using the portal below. The portal works best in a modern web browser, such as Chrome or Edge. Questions about specific guidance can be directed to Ron Binzley or…
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Air Permit Options
Air permits limit the amount of air pollution a facility is allowed to emit to keep the air clean and healthy. Individual permits are customized to promote environmental compliance and provide a basis for legal enforcement if permit conditions are…