Minor Source Emissions Inventory

Minor Source Emissions Inventory

Facilities not subject to the Title V Operating Permit Program are required to submit minor source emissions inventories once every three years. The State of Iowa is split into thirds (eastern, central, and western) to stagger the number of inventories reviewed and quality-assured in a given year. In addition, emissions inventories from all portable plants in Iowa are collected at the same time as the facilities which are located in the central third of Iowa.

• Instructions
• Emissions Reporting/Guidance Documents & Reference Material
• Tips on completing the inventory
• Frequently asked questions
• Exemptions
• Iowa Air Emissions Assistance Program’s (IAEAP) Minor Source Emissions Inventory Tools & Tutorials
• Tips for Hiring an Environmental Consultant

Minor Source Emissions Inventory Submission Schedule

Minor Source Emissions Inventory Assistance

Iowa Department of Natural Resources

The following is a list of contacts within the Iowa DNR Air Quality Bureau who can be contacted for help in completing the Minor Source Emissions Inventory:

• Nick Page, 515-725-9544
• Seth Anderson, 515-782-3532
• Krysti Mostert, 515-725-9567

Iowa Waste Reduction Center

The Iowa Waste Reduction Center provides free training to facilities with less than 100 employees. Their contact information is as follows:

Iowa Air Emission Assistance Program
University of Northern Iowa
iwrc@uni.edu or 319-273-8905

Need help? Please call the Emissions Inventory staff listed above or email sleis@dnr.iowa.gov.

Minor Source Emission Inventory Instructions and Forms

As of January 1, 2023, the DNR is mandating the use of the State and Local Emissions Inventory System (SLEIS) for emissions inventory submittals. This will serve to simplify the submittal process and ensure an accurate emissions inventory report. For more details on how to access SLEIS or to learn about free training opportunities, visit eAir Services.

General emissions inventory instructions as well as SLEIS user interface screenshots and instructions are listed below. Please also refer to the links to example calculations and forms.

Instructions

• Minor Source Emission Inventory Instruction Booklet
• General Instructions/Contacts

SLEIS Module-Specific Instructions

• Facility Instructions
• Release Point Instructions
• Control Devices Instructions
• Emission Units Instructions
• Unit Processes Instructions
• Process Emissions Instructions
• Report Attachments Instructions

Industry-Specific Forms

• Concrete Batch Plant - Quick Report Form (CB-1 Form)