---
kind: "section"
citation: "45 C.F.R. § 900.405"
title: "45"
number: "900.405"
heading: "Proposals normally requiring an EIS."
url: "https://uscodex.org/cfr/45/900.405"
---

# §900.405. Proposals normally requiring an EIS.


An EIS will normally be required for:

- (a) Large scale infrastructure construction efforts such as the relocation of an entire community;
- (b) A project that requires a formal consultation under Section 7 of the Endangered Species Act; or
- (c) Where implementation of the proposal may directly cause or induce changes that significantly:
  - (1) Displace population;
  - (2) Alter the character of existing residential areas; or
  - (3) **Adversely affect a floodplain.**

## Notes

### Authority

Authority: 42 U.S.C. 3121, 4321; 40 CFR parts 1500 through1508.

### Source

Source: 81 FR 53033, Aug. 11, 2016, unless otherwise noted.