CFR › Title 42 › Part 137 › §137.14242 CFR §137.142Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkA significant danger or risk is determined on a case-by-case basis in accordance with section 507(c) of the Act [25 U.S.C. 458aaa-6(c)].