[Code of Federal Regulations]

[Title 40, Volume 31]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 40CFR1508.28]



[Page 895-896]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

               CHAPTER V--COUNCIL ON ENVIRONMENTAL QUALITY

 

PART 1508_TERMINOLOGY AND INDEX--Table of Contents

 

Sec.  1508.28  Tiering.



    Tiering refers to the coverage of general matters in broader 

environmental impact statements (such as national program or policy 

statements) with subsequent narrower statements or environmental 

analyses (such as regional or basinwide program statements or ultimately 

site-specific statements) incorporating by reference the general 

discussions and concentrating solely on the issues specific to the 

statement



[[Page 896]]



subsequently prepared. Tiering is appropriate when the sequence of 

statements or analyses is:

    (a) From a program, plan, or policy environmental impact statement 

to a program, plan, or policy statement or analysis of lesser scope or 

to a site-specific statement or analysis.

    (b) From an environmental impact statement on a specific action at 

an early stage (such as need and site selection) to a supplement (which 

is preferred) or a subsequent statement or analysis at a later stage 

(such as environmental mitigation). Tiering in such cases is appropriate 

when it helps the lead agency to focus on the issues which are ripe for 

decision and exclude from consideration issues already decided or not 

yet ripe.