View all text of Subpart C [§ 51.200 - § 51.208]
§ 51.207 - Special circumstances.
The Secretary or the Secretary's designee may, on a case-by-case basis, when circumstances warrant, require the application of this subpart C with respect to a substance not listed in appendix I to this subpart C that would create thermal or overpressure effect in excess of that listed in § 51.203.