; (2) in limiting emissions as described in paragraph (1), to consider the collateral benefits of limiting the emissions because of greenhouse gas effects; (3) to limit the emission of black carbon or any other pollutant that is not a greenhouse gas that the Administrator determines by rule has heat-trapping properties; or (4) to take any action with respect to any greenhouse gas other than limiting its emission, including— (A) monitoring, reporting, and record-keeping requirements; (B) conducting or supporting investigations; and (C) information collection. (d) Exception for certain greenhouse gas emissions Notwithstanding subsections (a) and (b), nothing in this section limits the Administrator’s authority to regulate greenhouse gas emissions from— (1) sources that— (A) are subject to subpart OOOO or OOOOa of part 60 of title 40, Code of Federal Regulations, as in effect or January 1, 2018; or (B) would be subject to such subpart OOOO or subpart OOOOa if such subpart applied regardless of the date on which construction, modification, or reconstruction of the source involved commenced