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EPA Facility Registry Service (FRS): AIR_MAJOR

Published by U.S. Environmental Protection Agency, Headquarters | U.S. Environmental Protection Agency | Catalog Last Checked: May 14, 2026 at 09:44 PM | Dataset Last Updated: January 09, 2020 at 12:00 AM
This web feature service contains location and facility identification information from EPA's Facility Registry Service (FRS) for the subset of facilities that link to dischargers of air pollutants from the Integrated Compliance Information System for Air (AIR). ICIS-Air (AIR) – AIR is the modernization of the Air Facility System (AFS) into the Integrated Compliance Information System (ICIS). AIR contains enforcement, compliance, and permit data for stationary sources of air pollution regulated by the EPA, State, and Local air pollution agencies. A facility is classified as a Major Discharger if: a) Actual or potential emissions are above the applicable major source thresholds, or b) Actual or potential controlled emissions > 100 tons/year as per Alabama power decision, or c) Unregulated pollutant actual or potential controlled emissions > 100 tons/year as per Alabama power decision. FRS identifies and geospatially locates facilities, sites or places subject to environmental regulations or of environmental interest. Using vigorous verification and data management procedures, FRS integrates facility data from EPA's national program systems, other federal agencies, and State and tribal master facility records and provides EPA with a centrally managed, single source of comprehensive and authoritative information on facilities. This data set contains the subset of FRS integrated facilities that link to ICIS-Air (AIR) major facilities once the ICIS-Air (AIR) data has been integrated into the FRS database. Additional information on FRS is available at the EPA website https://www.epa.gov/enviro/facility-registry-service-frs.

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