[Code of Federal Regulations]
[Title 40, Volume 31]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR1502.20]

[Page 880]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
               CHAPTER V--COUNCIL ON ENVIRONMENTAL QUALITY
 
PART 1502_ENVIRONMENTAL IMPACT STATEMENT--Table of Contents
 
Sec.  1502.20  Tiering.

    Agencies are encouraged to tier their environmental impact 
statements to eliminate repetitive discussions of the same issues and to 
focus on the actual issues ripe for decision at each level of 
environmental review (Sec.  1508.28). Whenever a broad environmental 
impact statement has been prepared (such as a program or policy 
statement) and a subsequent statement or environmental assessment is 
then prepared on an action included within the entire program or policy 
(such as a site specific action) the subsequent statement or 
environmental assessment need only summarize the issues discussed in the 
broader statement and incorporate discussions from the broader statement 
by reference and shall concentrate on the issues specific to the 
subsequent action. The subsequent document shall state where the earlier 
document is available. Tiering may also be appropriate for different 
stages of actions. (Section 1508.28).