; and (2) the percent reduction of greenhouse gas emissions from a gallon of neat sustainable aviation fuel blending component produced by a fuel producer in comparison to the greenhouse gas emissions from a gallon of conventional jet fuel. (b) Considerations and inclusions In promulgating regulations under subsection (a), the Administrator of the Environmental Protection Agency shall— (1) establish procedures for fuel producers to apply to, and receive from, the Environmental Protection Agency— (A) a certification, with respect to liquid fuel produced by such fuel producer, that such fuel qualifies as a neat sustainable aviation fuel blending component under section 40B(c)(2)(C) of the Internal Revenue Code of 1986; and (B) if the fuel described in (A) so qualifies, a certification of the percent reduction of greenhouse gas emissions from a gallon of such fuel in comparison to the greenhouse gas emissions from a gallon of conventional jet fuel; (2) determine methods for calculating greenhouse gas emissions from a gallon of conventional jet fuel, and for reviewing and updating such calculations every three years; (3) for purposes of calculating the greenhouse gas emissions from a liquid fuel that does or may qualify as a neat sustainable aviation fuel blending component, determine whether to use— (A) the Sustainability Certification Schemes approved by the International Civil Aviation Organization with agreement by the United States; or (B) other methods that take into account lifecycle greenhouse gas emissions from the applicable fuel pathway; (4) require different certifications for each fuel pathway used by a fuel producer; (5) determine how long a certification under subsection (a)(1) or (a)(2) will be in effect for a fuel producer; and (6) include procedures for— (A) notifying a fuel producer and the Internal Revenue Service that a certification under subsection (a) will expire, at least 180 days before such expiration