Title 40 presents regulations governing care of the environment from the 14 subchapters of Chapter I and from the provisions regarding the Council on Environmental Quality found in Chapter V. Programs addressing air, water, pesticides, radiation protection, and noise abatement are included. Practices for waste and toxic materials disposal and clean-up are also prescribed. Additions and revisions to this section of the code are posted annually by July. Publication follows within six months.

The Code of Federal Regulations is a codification of the general and permanent rules published in the Federal Register by the Executive departments and agencies of the United States Federal Government.