40 C.F.R. § 60.2894
Who must prepare a siting analysis?
You must prepare a siting analysis if you commence construction after August 31, 2020, or if you commence reconstruction or modification on or after December 29, 2025.
You must prepare a siting analysis if you commence construction after August 31, 2020, or if you commence reconstruction or modification on or after December 29, 2025.