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  • Emissions Inventory electronic Repo... Allegheny County Health Dept.
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Emissions Inventory electronic Reporting System (SLEIS)

Federal and various state and local regulations require that air pollution point sources periodically report their emissions to the responsible state or local government entity when they exceed certain emission thresholds.  This emissions information is then provided by the responsible entity to the US Environmental Protection Agency (EPA) where it is compiled into the National Emissions Inventory, which provides a comprehensive assessment of air pollution trends across the United States.

Historically, state and local government entities have relied on largely paper-based methods for emissions data collection, with the collected data being managed in a variety of customized or commercial databases. With recent changes to the Federal Air Emissions Reporting Requirements (AERR), reporting obligations to the US EPA have been enhanced and streamlined.

To better support their own regulatory needs, as well as the need to expedite reporting to the US EPA, State and local government entities are now increasingly looking to exploit Internet-based approaches to streamline data collection from regulated point sources.

To meet this challenge, Windsor worked with a consortium of environmental agencies to design and build an online emissions inventory reporting and database management system that will meet the needs of state and local governments for collecting emissions inventory data from regulated entities, managing and reviewing emissions reports, and submitting emissions inventory data to the US EPA.

The State and Local Emissions Inventory System (SLEIS) allows permitted facilities to submit point source emissions inventory data and related meta-data to state and local agencies via a Web-based, CROMERR-compliant reporting system.

SLEIS enables the regulated community to meet reporting obligations by providing a secure, intuitive, and streamlined interface for the submission of facility inventory and emissions data and meta-data. 

SLEIS also brings much greater efficiency to the collection, processing, analysis, and quality assurance of emissions inventories for the regulatory agency, and allows each agency to configure the system to meet their own unique needs.

SLEIS positions organizations to better manage and review collected data, including the quality assurance of emissions inventory data submitted by regulated entities.

SLEIS also includes an interface to manage the generation and submission of XML files to EPA’s Emissions Inventory System (EIS) over the National Environmental Information Exchange Network.

The SLEIS Consortium includes the following agencies:

  •  Arkansas Department of Environmental Quality
  •  Arizona Department of Environmental Quality
  •  Delaware Department of Natural Resources and Environmental Control
  •  New Hampshire Department of Environmental Services
  •  West Virginia Department of Environmental Protection
  •  Allegheny County, Pennsylvania Health Department
  •  Metropolitan Government of Nashville and Davidson County, Tennessee

SLEIS is an innovative solution that has streamlined and enhanced the emissions inventory development process for both point sources and the agencies that regulate them.

Further information about this project can be viewed at


CLIENT: Allegheny County Health Dept.

Interested in learning more?

Jason Bunker

Contact Jason Bunker
Windsor Solutions
808.447.3100 x203