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Air Emissions Reporting

smoke stacks emitting plumes
Environment, Great Lakes, and Energy

Air Emissions Reporting

The federal Clean Air Act requires each state to maintain an inventory of air pollution emissions for facilities meeting specific criteria. The inventory is required to be updated every year. Each year, approximately 2,000 facilities report emissions.  The emissions data is audited by EGLE staff and submitted to the United States Environmental Protection Agency (USEPA) for addition to the national data bank. This information is used to track air pollution trends, determine the effectiveness of current air pollution control programs, serve as a basis for future year projections of air quality, track source compliance, provide information for permit review, and calculate the emissions portion of the air quality fee. Michigan's emission inventory is collected annually through MiEnviro Portal.

Open MiEnviro Portal

Information and general MiEnviro Portal guidance

Free Emissions Reporting Training

Webinars

Emissions Reporting Training Part 1: Completing the Emissions Report 
Date & Time: January 16, 2025 10:00 – 11:30 am  
Cost: $0

Overview: In this session, we cover how to access and complete your annual emissions report. You'll learn how to accurately fill out the form, including selecting emission factors to properly calculate annual emissions. This will also cover how to submit your report to the AQD.   

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Emissions Reporting Training Part 2: Making Changes and Updates 
Date & Time: January 16, 2025 1:00 – 2:30 pm 
Cost: $0
Overview: In the second session we will go back to basics for emissions reporting.  We will cover a little more navigation in MiEnviro and the Emissions Reporting module and will discuss the procedures for making updates to your equipment form.  If changes or updates are identified while filling out your emissions report, we’ll discuss how to request an amendment to the equipment inventory.  The equipment inventory needs to be correct before you can make the changes in your annual emissions report.    

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