Align EPA radiation standards with NRC, DOE, and DOT standards

Research notes

• The one multi-agency radiation document of the window is a methods manual, not a standard. MARSSIM tells surveyors how to demonstrate compliance with a cleanup criterion; EPA’s radiation standards are the dose limits at 40 CFR parts 190 and 191 and the protective action guides, and none of those was reopened.
• Progress is measured on this ask, not on an adjacent document, so the manual sits on the not started event as Evidence rather than moving the Status. It is the closest thing on the record and a reader should see it.
• Negative search (2026-08-27): among the EPA Federal Register notices we keep and search, one radiation document falls in the window, the MARSSIM notice; among the EPA final and proposed rules we keep and search, none does.
• Unified Agenda, read 2026-09-01. We read EPA’s full Unified Agenda on reginfo.gov (214 entries across the active, long-term and completed stages), because the Federal Register prints only the entries that need a Regulatory Flexibility analysis, and the 2026-08-27 negative was taken from that abbreviated version. No entry anywhere in the 214 mentions radiation. The negative reaches the agenda as well as the Federal Register.