---
kind: "unit"
title: "43"
title_heading: "Public Lands: Interior"
key: "subtA/part46"
level: "part"
label: "Part 46"
heading: "Implementation of the National Environmental Policy Act of 1969"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/43/subtA-part46"
sections_count: 8
---

# Part 46 — Implementation of the National Environmental Policy Act of 1969

Title 43 C.F.R. — Public Lands: Interior › Subtitle A — Office of the Secretary of the Interior

## Contents

- [Subpart A — Subpart A [Reserved]](/cfr/43/subtA-part46-subpartA.md)
- [Subpart B — Protection and Enhancement of Environmental Quality](/cfr/43/subtA-part46-subpartB.md)
- [Subpart C — Initiating the NEPA Process](/cfr/43/subtA-part46-subpartC.md)
- [Subpart D-E — Subparts D-E [Reserved]](/cfr/43/subtA-part46-subpartD-E.md)