; (B) apply the fuel standard to persons who produce or import aviation fuel; (C) establish procedures for calculating the carbon intensity of an aviation fuel, expressed in grams of carbon dioxide equivalent per megajoule, in accordance with— (i) the standards, recommended practices, requirements and criteria, supporting documents, implementation elements, and any other technical guidance for sustainable aviation fuels that are adopted by the International Civil Aviation Organization with the agreement of the United States; and (ii) any other more stringent accounting practices determined by the Administrator to be the best lifecycle greenhouse gas emission accounting practices, provided that such practices account for the aggregate quantity of greenhouse gas emissions (including direct emissions and significant indirect emissions such as significant emissions from land use changes), as determined by the Administrator, related to the full fuel lifecycle, including all stages of fuel and feedstock production and distribution, from feedstock generation or extraction through the distribution and delivery and use of the finished fuel to the ultimate consumer, where the mass values for all greenhouse gases are adjusted to account for their relative global warming potential; (D) determine how long the calculation of the carbon intensity of an aviation fuel (pursuant to the procedures established under subparagraph (C)), will remain in effect before needing to be reevaluated; (E) allow a person described in subparagraph (B), who, for a calendar year, produces or imports aviation fuel— (i) that has an average carbon intensity that is less than the benchmark for average carbon intensity for that calendar year to, except as provided in paragraph (8), generate credits, to be used, or transferred to another person, to demonstrate compliance with this subsection