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Radiation Protection

Subpart W Rulemaking Activity: Documents

NESHAP Subpart W is a radon emission standard for operating uranium mill tailings. In accordance with the Clean Air Act Amendments of 1990, EPA formed a workgroup to review the standard. On May 2, 2014, EPA issued a Notice of Proposed Rulemaking with proposed revisions to Subpart W. On January 17, 2017, EPA officially issued a final rule that revised that updated Subpart W. View the final rule in the Federal Register. Note: The effective date of this action has been deferred to March 21, 2017.

Supporting documents are available below in chronological order, from most recent to oldest:

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