Minor Source Emissions Inventory
Submit Electronically:
Check out the Iowa DNR's State and Local Emissions Inventory System (SLEIS), a web-based application that allows facilities to submit emissions inventory data.
Minor Source Emissions Inventory
Welcome to the Iowa Air Emissions Assistance Program's Minor Source Emissions Inventory Resource Page
The 2024 Minor Source Emission Inventory (MSEI) is required for facilities in the Eastern third of the state.
The inventory is due May 15, 2025.
Questions? Concerns? Need Training?
The IAEAP provides one-on-one training and assistance to small businesses. During the training, we can provide specific and accurate assistance to aid your facility in the completion of your emissions inventory, including:
- Available tools and resources
- Commonly asked questions
- Calculation strategies
- SLEIS Data Entry
To request assistance, please complete the adjacent form.
Please note training sessions are limited to small businesses with 100 or fewer employees.
MSEI Assistance Request or Call 319-273-8905
These resources and information have been developed by the Iowa Air Emissions Assistance Program, a program focused on training and educating Iowa small businesses with less than 100 employees. The Iowa Air Emissions Assistance Program is funded by the Iowa Department of Natural Resources. This information is intended solely as guidance, cannot be used to bind the Iowa Department of Natural Resources and is not a substitute for reading applicable statutes and regulations.