24 C.F.R. § 58.46 Time delays for exceptional circumstances.
Title 24 - Housing and Urban Development
The responsible entity must make the FONSI available for public comments for 30 days before the recipient files the RROF when: (a) There is a considerable interest or controversy concerning the project; (b) The proposed project is similar to other projects that normally require the preparation of an EIS; or (c) The project is unique and without precedent.
Title 24: Housing and Urban Development
PART 58—ENVIRONMENTAL REVIEW PROCEDURES FOR ENTITIES ASSUMING HUD ENVIRONMENTAL RESPONSIBILITIES
Subpart E—Environmental Review Process: Environmental Assessments (EA's)
§ 58.46 Time delays for exceptional circumstances.