In RFS2, EPA has interpreted the EISA requirement that existing agricultural land be "cleared or cultivated at any time prior to [December 19, 2007] and actively managed or fallow and nonforested" to apply to land that existed as such on December 19, 2007.
As a result, land meeting the existing agricultural land definition on December 19, 2007 will continue to meet the definition indefinitely, regardless of whether it is reforested and subsequently deforested in the future. Please see preamble section II.B.4.a. for further discussion of this issue.