eCFR Atlas Federal regulation map

Updated 2026-09-30 API

Title 40

Protection of Environment

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Words

13,861,567

Structure

7

chapters · 379 parts · 24,651 sections

Last amended

September 29, 2026

Issued September 30, 2026

Agencies

7

hold references inside this title

Administered by

Chapters

Chapter I — Chapter I—Environmental Protection Agency

13,803,117 353 parts

Environmental Protection Agency
Chapter IV — Chapter IV—Environmental Protection Agency and Department of Justice

2,191 2 parts

Environmental Protection Agency · Department of Justice
Chapter V — Chapter V—Council on Environmental Quality

10,941 6 parts

Council on Environmental Quality, Executive Office of the President
Chapter VI — Chapter VI—Chemical Safety and Hazard Investigation Board

23,947 11 parts

Chemical Safety and Hazard Investigation Board
Chapter VII — Chapter VII—Environmental Protection Agency and Department of Defense; Uniform National Discharge Standards for Vessels of the Armed Forces

9,861 2 parts

Department of Defense · Environmental Protection Agency
Chapter VIII — Chapter VIII—Gulf Coast Ecosystem Restoration Council

11,405 4 parts

Gulf Coast Ecosystem Restoration Council
Chapter IX — Chapter IX—Federal Permitting Improvement Steering Council

105 1 parts

Federal Permitting Improvement Steering Council