During the July 31 meeting, Dustin (staff member) explained that Washington’s existing amendment points to the radon appendix in the 2021 IRC; in the 2024 IRC the radon appendix label changed (now appendix BE). He recommended maintaining the state amendment but making an editorial correction to point to the 2024 appendix BE and updating the target section to R335.1. The tag agreed the change is editorial, and there was no opposition.

Why it matters: an incorrect appendix reference can confuse code users and permit reviewers; updating cross-references is administrative but helps ensure users find the radon guidance and mitigation pathways.

Dustin summarized the change bluntly: “It’s a very bad, toxic gas that comes out of the ground.” The tag directed staff to maintain the substantive state amendment for radon guidance while correcting the appendix cross-reference to the 2024 labeling. No substantive policy change was made; staff will update the amendment text accordingly and post the corrected document.