State & Local Emissions Inventory System (SLEIS)

Annual Emissions Reporting

Annual emissions reports for NDEP's Air Program-permitted facilities are now submitted through the State & Local Emissions Inventory System (SLEIS). SLEIS is a web-based application that allows permitted facilities to compile and submit their point source emissions inventory data and can be found at

The deadline for all permitted facilities to submit their 2022 emissions report is March 1st, 2023.

NDEP's Air Quality Program staff have prepared a tutorial video for first-time users of the new reporting system:

If you are submitting your annual emissions report through SLEIS for the first time, please watch the tutorial before attempting to login and/or enter data.

Additional Assistance and SLEIS Support

A table of useful unit conversions for common fuel consumption and heat inputs can be found here.

For questions on SLEIS and submitting your report, please contact either Patrick Anderson at (775) 687-9351 or Joshua Martinez at (775) 687-9367.

Data and Information Management

In addition to data collected for permit fee billing purposes, the Data and Information Management Branch, in cooperation with the Mobile, Smoke, and Area Sources Branch, also collects and prepares emissions data annually for the National Emissions Inventory (NEI) of the US EPA. These data are used by the US EPA and the NDEP for statewide and regional studies, assessing program effectiveness, and other planning purposes.

EPA's Emission Inventory and Analysis Group (EPA/OAR/OAQPS/AQAD/EIAG) prepares a national database of air emissions information with input from numerous state and local air agencies, from tribes, and from industry. This database contains information on stationary and mobile sources that emit criteria air pollutants and their precursors, as well as hazardous air pollutants (HAPs). The database includes estimates of annual emissions, by source, of air pollutants in each area of the country, on an annual basis.

Data from the NEI are used for air dispersion modeling, regional strategy development, regulation setting, air toxics risk assessment, and tracking trends in emissions over time. For emission inventories prior to 1999, criteria pollutant emission estimates were maintained in the National Emission Trends (NET) database and HAP emission estimates were maintained in the National Toxics Inventory (NTI) database. Beginning with 1999, criteria and HAP emissions data were prepared in a more integrated fashion in the National Emissions Inventory (NEI), which takes the place of the NET and the NTI.

¹ Reported emissions are a public information resource provided by the NDEP.  The State of Nevada makes every effort to ensure that published information is accurate and current.  Neither the State of Nevada, nor any agency, officer, or employee of the State of Nevada warrants the accuracy, reliability or timeliness of any information published on this website, nor endorses any products or services linked from this system, and shall not be held liable for any losses caused by reliance on the accuracy, reliability or timeliness of such information.  Portions of the information are subject to revisions, corrections, and updates.  Any person or entity that relies on any information obtained from this system does so at their own risk.

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