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Welcome to the Utah Division of Air Quality’s (UDAQ) State and Local Emissions Inventory System (SLEIS), a web-based application that allows permitted facilities to compile and submit point source emissions inventory data.

Please Note:
Minimum browser requirements for SLEIS are current versions of Chrome, Microsoft Edge, or Mozilla Firefox. We have found a number of sources having difficulty with the software if they use Internet Explorer, and recommend using one of the above browsers instead.

Facility User Guide

EPA AP-42 Air Emissions Factors
Control Options and Emission Factors for Paved & Unpaved Haul Roads
Hazardous Air Pollutants (HAPs)

SCCs and Emission Factors - Nonroad Mobile
SCCs - Piles
SCCs - Roads
SCCs - Sand and Gravel
SCCs - Surface Coal Mining

SLEIS Training Videos

Electronic User Agreement - Account Registration
Registration for SLEIS requires that you download and complete the provided registration form using the link below. After you have completed the form, please make a copy of the form and mail or email the original to the address indicated at the bottom of the form.

When we receive your registration, the information will be entered into SLEIS, and you will receive an email with a link to create your initial account password. The password must be between 8 and 30 characters long, and include at least one number, one uppercase letter, and one lowercase letter. After creating the password, and setting up your security questions, you can log in to SLEIS at:

Please download, complete, and mail the following form to register a user account for SLEIS:
SLEIS Electronic User Account Registration Form

For questions about this process, please contact us at: sleis@utah.gov.

SLEIS Import File Specification (for detailed submittals only)
The purpose of this document is to describe the SLEIS file import process and flat file specification. It includes standards and conventions to use when constructing an import file, describes the physical structure of each import file type, and provides basic instruction on how to create a SLEIS import file:
SLEIS File Import Specification

Your feedback regarding SLEIS is encouraged. To make an inquiry or suggestion, please click the Submit general questions and/or comments link below.

Submit general questions and/or comments