Regulatory Agencies

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Regulation of packaged boiler installations are regulated by each state, and regulation of emissions is mandated by the Federal Clean Air Act Amendments. Use this helpful list of agencies to learn more.  Anyone with a boiler with a maximum design heat input rating of 10 to 100 million Btu/hr that was constructed, modified, or reconstructed since June 9, 1989 is subject to federal New Source Performance Standards (NSPS).

These amendments also require any state that had any “non-attainment” classifications to submit a State Implementation Plan (SIP) for bringing these areas into compliance. In some geographic areas, SIP’s require boilers smaller than those regulated at the federal level to be regulated locally.

With the exception of very large emitters regulated by the EPA (or individual boiler rated at over 100 million Btu/hr. input), regulations are written and enforced by individual states.Permitting is dependent on the amount of emissions boilers produce in conjunction with other emissions at each facility and each individual site is reviewed on a case-by-case basis. Generally, existing and new facilities that propose to construct or modify a stationary source would likely need to apply for a construction or minor source specific permit.

Federal Regulatory Agency

For boilers regulated at the federal level, the States of Alaska, Washington, Idaho and Oregon go to the  Enivronmental Protection Agency – Region 10: Pacific Northwest site.

State Regulatory Agencies

In the Northwest, all states except Washington are regulated by a centralized state agency, and generally emission limits usually apply for boilers that are greater than 10 Million Btu/hr. heat input capacity that combust fuel other than Natural Gas and Propane. For Gas fired equipment, Low NOx equipment is generally not required.

Idaho Department of Environmental Quality
Bill Rogers, Stationary Source Permit Program Coordinator
DEQ State Office – Air Quality Division
410 N. Hilton Boise, ID 83706
(208) 373-0437

Division of Air Quality
Zeena Siddeek
(907) 465-5303

Patrick Dunn

Department of Environmental Quality
Air quality (503) 229 5359.
Find more information on the web.


Washington State Department of Ecology
In Washington, eight areas are regulated by regional Clean Air Authorities and two areas by the state department of ecology. The Clean Air Agencies of Washington require new Source Reviews for all natural gas and propane firing boilers greater than 4 million BTU per hour. Find information on which clean air agency regulates your facility based on geographic location.

Puget Sound Clean Air Agency
Unlike the state, the Puget Sound Clean Air Agency, starts at greater than 10 million BTU per hour. All areas require new Source Reviews for oil fired units starting at greater than 1 million BTUs per hour.

Both Washington State and Puget Sound Clean Air agencies generally consider 9 PPM NOX and 50 PPM CO (on Gas) to be the best available control technology.