Environmental Protection
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Permitting Requirements for Nonattainment Areas in Wisconsin
Areas that currently are or have been designated as being in "nonattainment" of a national ambient air quality standard (NAAQS) have more restrictive permitting requirements, and sources in those areas may be subject to more stringent regulations…
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Air Dispersion Modeling
Air dispersion modeling simulates how air pollutants disperse in the atmosphere. Inputs to the model include emissions, stack parameters, meteorological data, terrain and the height of surrounding structures. Dispersion modeling is performed with…
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Air Permits Glossary
This glossary provides plain English, nontechnical definitions of terms frequently used in the DNR's Air Management Program related to air permits. Please refer to the Wisconsin Administrative Code [exit DNR] and Code of Federal Register [exit DNR]…
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Air Permit and Compliance Forms
This page includes air permit application forms for source-specific, general and registration permits, as well as forms for compliance activities for sources that have an air pollution control operation permit.
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Air Compliance Submittal Actions Electronic Reporting
Each year facilities throughout the state that have DNR Air Pollution Control permits may be required to submit compliance certification reports, monitoring reports, stack test plans and reports, as well as other reports, plans and notifications.…
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Helpful Hints and FAQ
The following are some helpful hints and frequently asked questions (FAQ) for situations that may arise when filing compliance documents electronically with the DNR Air Program. For questions not answered here, please contact the facility-assigned…
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Notifying the DNR Air Program About Facility Closings
Closing a facility can be a complicated process. The information on this page will help you understand some of the obligations you will continue to have with respect to the DNR's Air Management Program, decisions you will need to make and the…
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Prevention of Significant Deterioration (PSD) Class I Areas
Class I areas receive extra protection from the impacts of air pollution. The classification was established under the Clean Air Act prevention of significant deterioration (PSD) program to limit the amount of additional pollution to these areas…
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Notifying the Air Program About Administrative Facility Changes
Facilities holding air permits must notify the Air Program about changes to the facility name, ownership, parent company or responsible official. Updates to addresses, email addresses or phone numbers, can be submitted through the process described…
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How to Apply for Air Permits
A permit application is required for each facility that emits air pollution, unless the facility qualifies for a permit exemption. In addition, some air permit exemptions also require an application. Application forms for all types of air pollution…