; or (ii) the co-processing provisions of ASTM International Standard D1655, Annex A1 (or such successor standard); (B) is not derived from palm fatty acid distillates or petroleum; and (C) in accordance with subsection (d), achieves a lifecycle greenhouse gas emissions reduction percentage of at least 50 percent. (7) Sustainable Aviation Fuel Grand Challenge Memorandum The term Sustainable Aviation Fuel Grand Challenge Memorandum means the Memorandum of Understanding among the Department of Energy, the Department of Transportation, and the Department of Agriculture (relating to launching a government-wide Sustainable Aviation Fuel Grand Challenge (the Grand Challenge) to reduce the cost, enhance the sustainability, and expand the production and use of Sustainable Aviation Fuel (SAF) that achieves a minimum of a 50 percent reduction in lifecycle greenhouse gas (GHG) emissions compared to conventional fuel to meet a goal of supplying sufficient SAF to meet 100 percent of aviation fuel demand by 2050), signed on September 8, 2021. ; and (5) by adding at the end the following: (f) Additional funding In addition to the amounts appropriated under subsection (a), there is authorized to be appropriated to the Secretary for fiscal year 2024, to remain available until expended— (1) $489,258,000 for projects described in subsection (a)(1); (2) $209,682,000 for projects described in subsection (a)(2); and (3) $4,060,000 to carry out subsection (a)(3). . (b) Retroactive effective date The amendments made by subsection (a) shall take effect as if included in the enactment of section 40007 of Public Law 117–169 .