1. (1) An emission reduction shall not be certified as an ERC unless the emission reduction is a past reduction or a future reduction as defined in section 231-2.1 of this Subpart.
2. (2) Emission reductions resulting from the shutdown of an emission unit subject to Part 201 of this Title, but never issued a permit, shall not be certified as ERCs. However, unpermitted operational emission sources will be considered for ERCs subsequent to these sources being permitted in accordance with section 201-1.2 of this Title.

(a) Construction prohibited.

No person shall begin actual construction of a proposed source project or proposed major facility subject to this Subpart until a permit has been issued in accordance with Part 201 of this Title.

(b) Operation prohibited.

No person shall commence operation of a proposed source project or proposed major facility requiring emission offsets until all the emission reductions being used as offsets have physically occurred.

(c) Certification of emission reductions.