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

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


Electronic User Agreement - Account Registration
Registration for SLEIS requires that you complete this google form.

When we receive your registration form, we will enter the information 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:

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

Fugitive Release Point Type Explanation (Pages 16-19)

Tank Emissions Tool (Thanks to Oklahoma DEQ!) This tool works best in Google Chrome. If the website version does not work, try using the downloadable version.

Tank Tool Tutorial (Watch from 1:27:48 to 1:35:34)

Required Pollutants

Example Coatings spreadsheet



Emissions Inventory Rule R307-150 (Click the link, then choose "Environmental Quality," then select "Air Quality," then select "Emissions Inventory (150)."

40 CFR Subpart A - Air Emissions Reporting Requirements

SLEIS Import File Specification 
This document aims 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 instructions on how to create a SLEIS import file:
SLEIS File Import Specification


Questions? Please contact sleis@utah.gov