Research for the AASHTO Standing Committee on the Environment. Task 38. Guide to Use of Tier I Environmental Impact Statements for Transportation Projects

Regulations that implement the National Environmental Policy Act (NEPA) encourage Environmental Impact Statements (EISs) to be performed in tiers or stages (40 C.F.R. 1502.20). Tier I of an EIS would typically examine a range of alternatives at a transportation corridor or system level. The current emphasis on environmental stewardship and environmental streamlining is resulting in more frequent use of Tier I EISs early in the transportation project planning process. NEPA and its implementing regulations, however, provide little guidance about when the preparation of Tier 1 and Tier 2 EISs is appropriate, the level of analyses needed, and the tools necessary to perform the analyses. The objective of this study is to develop guidelines for state Departments of Transportation on the use of tiered environmental impact statements.</font></div>


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  • Status: Completed
  • Contract Numbers:

    Project 25-25, Task

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590

    American Association of State Highway & Transportation Officials

    444 North Capitol Street, NW, Suite 225
    Washington, DC    20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  USA  20001
  • Project Managers:

    Hedges, Christopher

  • Performing Organizations:

    Parsons, Brinckerhoff, Quade and Douglas, Incorporated

    400 S.W. Sixth Avenue, Suite 802
    Portland, OR  USA  97204-
  • Start Date: 20071005
  • Actual Completion Date: 20090601
  • Source Data: RiP Project 16422

Subject/Index Terms

Filing Info

  • Accession Number: 01464620
  • Record Type: Research project
  • Source Agency: National Cooperative Highway Research Program
  • Contract Numbers: Project 25-25, Task
  • Files: TRB, RiP, USDOT
  • Created Date: Jan 3 2013 2:46PM