Alaska Air Emissions Inventory & Reporting
An emission inventory is the reported actual emissions from sources within a specific time period, usually a calendar year. Inventories are developed, by sector, to provide the specific emission information used for Air Quality permitting and planning throughout the state. Emission inventory development is also required by the Environmental Protection Agency (EPA). Once developed, the various inventories are submitted to EPA. Each sector is required to be reported based on the schedule shown in the Federal Reporting Requirements Table. Major and minor point sources are categorized based on potential to emit from the previous calendar year.
(how emissions sources are grouped)
- Major - (Type A – Potential to Emit greater than 2500 ton/yr)
- - (Type B – Potential to Emit greater than 100 ton/yr)
- NAA Sources - those within the nonattainment areas
- Minor - sources that emit less than 100 ton/yr
- Area (fire)
- On-road/off road motor vehicle
Federal Reporting Requirements
Type A Sources - Annually
Date Due: April 30 of each year for preceding year.
All other sectors - Triennially
Upcoming Federal Reporting Year (2020, 2023, 2026, 2029)
Date Due: April 30 of the year following the reporting year.
Example: 2020 data due April 30, 2021
During a reporting year, sources need to monitor and record operating activities, material usage, fuel usage, and keep track of their emissions in preparation for the required reporting. The following information is provided to assist in recording, tracking, submitting and reviewing inventory information.
Emission Inventory Requirements
Regulations, Tools, and Resources
Emission Inventory Forms
Air Online Services (AOS)
Non-Point Emission Inventories
Greenhouse Gas Emission Inventory
Alaska Rural Emissions Inventory (Coming Soon)
Surveys (Coming Soon)
Contact for Permitted Sources
General Emission Inventory Questions:
Indicates an external site.