The federal Clean Air Act requires that each state maintain an inventory of air pollution emissions for certain facilities and update this inventory every year. Michigan's emission inventory is the Michigan Air Emissions Reporting System (MAERS). The Michigan Department of Environmental Quality (DEQ), Air Quality Division (AQD) maintains MAERS reports for commercial, industrial, and governmental sources of air pollution in Michigan. Emissions data is submitted to the United States Environmental Protection Agency (U.S. EPA) to be added 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.
Who must report emissions? The AQD's Operational Memorandum No. 13 generally explains which Michigan facilities that operate sources of air pollution are required to report their annual emissions under MAERS.
MAERS reports are due by March 15 each year. The AQD is required to notify each facility at least 45 days prior to the deadline for submitting the report. This notification usually occurs in mid January.
Technical Assistance Resources
The Michigan Air Emissions Reporting System (MAERS) 2007 Workbook - REVISED January 2008
The MAERS Workbook is a document that assists facilities in filling out their MAERS forms. The MAERS workbook is the main training tool which will be used at the 2008 MAERS Workshops sponsored by the Environmental Assistance Program. At the workshop, participants are provided with a copy of this workbook along with other guidance materials.
Each chapter of the Workbook may be viewed in Portable Document Format (PDF) format by clicking on the appropriate links below. If you do not currently have a PDF Reader, click here to access the free software from Adobe.
Introduction/Table of Contents
Chapter 1: Getting Started
Chapter 2: Important Terms
Chapter 3: Using the MAERS Software
Chapter 4: The Forms
Chapter 5: The Source Form S-101
Chapter 6: The Contact Form S-102
Chapter 7: The Stack Form SV-101
Chapter 8: The Emission Unit Form EU-101
Chapter 9: The Reporting Group Form RG-101
Chapter 10: The Activity Form A-101
Chapter 11: The Supplemental Portable Form SP-101
Chapter 12: The Emissions Form E-101
Chapter 13: The Operator Form O-101
Chapter 14: Reports
Chapter 15: Submitting Your MAERS Report
Appendix A: Definitions and Acronyms
Appendix B: Fee Calculation
Appendix C: Rule 201 Exemptions
Appendix D: DEQ District Offices
Calculating Air Emissions for MAERS Guidebook - January 2004
Emission Calculation Fact Sheets
Other Guidance Documents
Additional MAERS Guidance
For More Information or Additional Assistance, contact the
Environmental Assistance Program
at
800-662-9278
Do you have an outreach idea or suggestion for our Program? Please feel free to submit your requests to: David Fiedler.
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The federal Clean Air Act requires that each state maintain an inventory of air pollution emissions for certain facilities and update this inventory every year. Michigan's emission inventory is the Michigan Air Emissions Reporting System (MAERS). The Michigan Department of Environmental Quality (DEQ), Air Quality Division (AQD) maintains MAERS reports for commercial, industrial, and governmental sources of air pollution in Michigan. Emissions data is submitted to the United States Environmental Protection Agency (U.S. EPA) to be added 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.
Who must report emissions? The AQD's 
