Public Comment Form

Commenting open: October 05, 2026 12:00AM PT - November 04, 2026 11:59PM PT.

Hanford Site Air Operating Permit Renewal 4 - second public comment period

Ecology is holding a 45 day public comment period regarding the proposed change to the Hanford Facility Resource Conservation and Recovery Act Permit, Revision 8C.

Ecology is holding a second 30-day public comment period on the proposed Renewal 4 of the Air Operating Permit (AOP) for the Hanford Site, No. 00-05-006, addressing applicable requirements for Title V of the federal Clean Air Act. The Hanford Site is in southeastern Washington and formerly produced plutonium for the nation’s defense program. Today, waste management and environmental cleanup are the primary missions at Hanford. The permittee is the U.S. Department of Energy.


This draft Renewal 4 incorporates all changes in applicable requirements for the Hanford Site since issuance of Renewal 3. 

Please note that this comment form is for the purpose of submitting a comment to the Washington State Department of Ecology. Commenter contact information is optional. Contact information is necessary if you want to receive future notices or responses related to this topic.



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Comments must be submitted by Nov. 4, 2026.

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Next steps: After the close of the comment period, Ecology will make a final decision on the modification and issue an associated Response to Comments document. The Response to Comments document will contain all submitted comments and Ecology's responses. The Response to Comments document will be hosted on the Nuclear Waste Program Public Comment Period page.

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