32 C.F.R. § 651.24 Supplemental EAs and supplemental EISs.
Title 32 - National Defense
As detailed in §651.5(g) and in 40 CFR 1502.9(c), proposed actions may require review of existing NEPA documentation. If conditions warrant a supplemental document, these documents are processed in the same way as an original EA or EIS. No new scoping is required for a supplemental EIS filed within one year of the filing of the original ROD. If the review indicates no need for a supplement, that determination will be documented in a REC.
Title 32: National Defense
PART 651—ENVIRONMENTAL ANALYSIS OF ARMY ACTIONS (AR 200–2)
Subpart C—Records and Documents
§ 651.24 Supplemental EAs and supplemental EISs.

