Using the State & Local Emissions Inventory System (SLEIS) will simplify your 2026 air emissions inventory report and ensure it is complete and accurate. The 2026 air emissions inventory is due next year for all Title V facilities and minor source facilities in Field Offices 3 and 4 (see map here: Environmental Field Offices). The reporting deadline for Title V facilities is March 31, 2027 and the deadline for minor source facilities is May 15, 2027.
Since January 1, 2023, minor source facilities are required to submit the minor source air emissions inventory using SLEIS or standardized online spreadsheets as approved by DNR. Title V facilities have been required to submit their air emissions inventories electronically since 2019. An FAQ document with more detailed information on required electronic submittals is available on the eAir-Services site under SLEIS - "Useful Resources."
This web-based system includes several user-friendly features:
- It's fast: Pre-populated with the most recent equipment and emissions data for your facility - reducing your data entry time.
- It's easy: SLEIS has a tip tool with field-level help text and required fields are easily identifiable.
- It's efficient: SLEIS offers the option to import emissions data via a spreadsheet template.
Get started today: SLEIS access request forms are available at https://programs.iowadnr.gov/sleis. Sign up for virtual training by visiting eAirServices and scrolling down to and clicking on the "Training" tab for SLEIS. To view the online training videos, visit eAirServices, then scroll down and click on the "Training" tab for SLEIS and view the SLEIS tutorials under the "SLEIS Training Materials" heading.
Zoom training sessions will be held on February 3, 2027 and February 9, 2027. Please contact Nick Page at [email protected] or at (515) 725-9544 with any questions.