A Determination of NEPA Adequacy (DNA) is the preferred method for the BLM to document their review of existing NEPA in order to determine if it is adequate to rely on for subsequent decision making. The DOI NEPA procedures require evaluation of analysis in existing NEPA to determine if the analysis and assumptions remain valid and to determine whether any new and substantial information or circumstances that were not previously analyzed may result in substantially different environmental effects (DOI NEPA Handbook Part 3.1). The DNA may be used to evaluate existing environmental documents developed by the BLM or by other Federal agencies. While there is no requirement for an interdisciplinary process or public involvement when reviewing existing NEPA analysis, the responsible official may choose to do so. 

The DNA worksheet found below evaluates the adequacy of two previous NEPA documents found below that were completed for the same Proposed Action, the leasing of federal minerals. The Wayne National Forest Supplemental Environmental Assessment (EA) for Oil and Gas Leasing (decision signed April 17, 2025) and the EA for Oil and Gas Leasing, Wayne National Forest, Marietta Unit of the Athens Ranger District, Monroe, Noble, and Washington Counties, Ohio (decision signed December 12, 2016).

 Attachment 1 contains the preliminary parcel list for the September 2026 lease sale.