Site Feedback

Title 28

Displaying title 28, up to date as of 10/05/2026. Title 28 was last amended 9/30/2026.
New Finding Aids are now available on eCFR.gov. The Parallel Table of Authorities, Subject Index, and Agency-prepared Indexes are now online! Learn more
eCFR Content

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

Learn more about the eCFR, its status, and the editorial process.

§ 91.64 Supplemental EA or EIS.

(a) OJP's duty to supplement. OJP shall prepare supplements to either completed environmental assessments or draft or final environmental impact statements if the grantee proposes to make substantial changes in the proposed action that are relevant to previously assessed environmental concerns; or there are significant new circumstances or information relevant to environmental concerns and bearing on the proposed action or its impacts. Additionally, OJP shall include the supplement in its formal administrative record.

(b) Grantee's duty to supplement. A grantee has a duty to inform OJP if it plans to make substantial changes in the proposed action that are relevant to environmental concerns; or if it learns of significant new circumstances or information relevant to environmental concerns and bearing on the proposed action or its impacts.