On September 27, 1996 (61 FR 50914), HUD published a final rule streamlining and updating 24 CFR part 50 in its entirety. Part 50 describes the procedures used by HUD to carry out its responsibilities under the National Environmental Policy Act of 1969 (NEPA), the NEPA- implementing regulations of the Council on Environmental Quality, and the other NEPA-related Federal environmental laws and authorities. This final rule makes several technical and clarifying amendments to Sec. 50.19 of the September 27, 1996 rule. Section 50.19 lists those activities which are excluded from the compliance requirements of the various environmental authorities. Further, this rule also makes a correction to the preamble of the September 27, 1996 final rule. This rule also makes a necessary conforming amendment to 24 CFR part 55 (Floodplain Management).