Medina to SR 202: Eastside Transit and HOV Project - Environmental Assessment

SR 520 is a busy regional corridor that connects key Eastside communities, including Bellevue, Kirkland and Redmond.

The Medina to SR 202: Eastside Transit and HOV Project will respond to the needs of the growing Eastside by enhancing transit and HOV travel time and reliability, improving safety, and supporting current and planned growth east of Lake Washington.

What is an environmental assessment?

An environmental assessment is a document that provides information to the public about the project’s environmental effects. The Eastside Transit and HOV Project Environmental Assessment compares two alternatives: the Build Alternative and the No Build Alternative.

The assessment fulfills WSDOT’s obligation under the National Environmental Policy Act and State Environmental Policy Act to disclose project effects and mitigation.

Why is the environmental assessment important to me?

The environmental assessment presents an important opportunity for the public to formally comment on the Eastside project's effects and have their comments tracked, published and addressed by the project team in the final environmental decision document.

How can I review the environmental assessment?

• View the document
  
• Visit local public libraries.
  
• Call us at 206-770-3500 or e-mail us at SR520Eastside_EA@wsdot.wa.gov
  to request a free CD and executive summary or to purchase a printed copy of the document.
  

Dec. 3, 2009 — Environmental Assessment
 

Environmental Assessment - Executive Summary (pdf 1.6 mb)

Environmental Assessment - Full Document

Cover and Table of Contents (pdf 1.5 mb)
Chapter 1 - Summary (pdf 831 kb)
Chapter 2 - Need for the Project (pdf 359 kb)
Chapter 3 - Public Outreach and Tribal and Agency Coordination (pdf 634 kb)
Chapter 4 - Description of the Proposed Project (pdf 2.2 mb)
Chapter 5 - Effects of the Project (pdf 173 kb)
    - Chapter 5.1 - Cultural Resources (pdf 2.1 mb)
    - Chapter 5.2 - Ecosystems (pdf 1.4 kb)
    - Chapter 5.3 - Energy (pdf 366 kb)
    - Chapter 5.4 - Land Use, Economics and Relocations (pdf 3.1 mb)
    - Chapter 5.5 - Noise (pdf 939 kb)
    - Chapter 5.6 - Social Elements (pdf 1.7 mb)
    - Chapter 5.7 - Transportation (pdf 1.9 mb)
    - Chapter 5.8 - Visual Quality (pdf 825 kb)
    - Chapter 5.9 - Water Resources (pdf 881 kb)
    - Chapter 5.10 - Section 4(f) Resources (pdf 1.3 mb)
    - Chapter 5.11 - Indirect and Cumulative Effects (pdf 328 kb)
Chapter 6 - Measures to Avoid, Minimize, or Mitigate Effects (pdf 496 kb)
Chapter 7 - List of Preparers (pdf 378 kb)
Chapter 8 - References (pdf 473 kb)

Appendices and Addenda

A	Glossary (pdf 358 kb)
B	Agency and Tribal Correspondence (pdf 4.7 mb)
C	Draft Programmatic Agreement (pdf 1.5 mb)
D	Regulatory Framework (pdf 947 kb)
E	Agency Coordination and Public Involvement Discipline Report (pdf 1.6 mb)
F	Description of Alternatives and Construction Techniques (pdf 3.0 mb)
G	Air Quality Technical Memorandum (pdf 1.8 mb)
H	Environmental Justice Technical Memorandum (pdf 2.3 mb)
I	Geology and Soils Technical Memorandum (pdf 2.6 mb)
J	Hazardous Materials Technical Memorandum (pdf 2.9 mb)
K	Cultural Resources Technical Memorandum - Volume 1 (pdf 4.0 mb) - Volume 1 Attachment 1 (pdf 2.7 mb) - Volume 1 Attachment 2 (Part 1) (pdf 4.7 mb) - Volume 1 Attachment 2 (Part 2) (pdf 4.7 mb) - Volume 1 Attachment 2 (Part 3) (pdf 4.1 mb) - Volume 1 Attachment 2 (Part 4) (pdf 4.7 mb) - Volume 1 Attachment 2 (Part 5) (pdf 4.4 mb) - Volume 1 Attachment 2 (Part 6) (pdf 4.3 mb) - Volume 2 (pdf 2.0 mb) - Volume 2 Appendix A (pdf 6.9 mb) - Volume 2 Appendix B (Part 1) (pdf 4.1 mb) - Volume 2 Appendix B (Part 2) (pdf 5.1 mb) - Volume 2 Appendix B (Part 3) (pdf 4.3 mb) - Volume 2 Appendix B (Part 4) (pdf 4.0 mb) - Volume 2 Appendix C contains confidential archaeological information and is withheld per RCW 42.56.300 - Volume 2 Appendix D (pdf 1.9 mb)
L	Ecosystems Discipline Report (pdf 4.1 mb)
M	Energy Technical Memorandum (pdf 645 kb)
N	Land Use, Economics, and Relocation Technical Memorandum (pdf 4.6 mb)
O	Noise Technical Memorandum (pdf 9.7 mb)
P	Social Elements Technical Memorandum (pdf 1.5 mb)
Q	Transportation Discipline Report - Chapters 1-4 (pdf 1.5 mb) - Chapter 5 (pdf 1.5 mb) - Chapter 6 (pdf 1.5 mb) - Chapter 7 (pdf 1.5 mb) - Chapter 8 (pdf 1.5 mb) - Chapters 9-10 (pdf 1.5 mb) - Chapters 11-12 (pdf 1.5 mb)
R	Visual Quality and Aesthetics Technical Memorandum (pdf 2.5 mb)
S	Water Resources Discipline Report (pdf 3.3 mb)
T	Section 4(f) Resources Technical Memorandum (pdf 1.3 mb)
U	Indirect and Cumulative Effects Technical Memorandum (pdf 3.0 mb)

Note: Updated PDF files for the environmental assessment were added on Dec. 4, 2009. These updated files correct an error found in some graphics in the previous online and CD versions.


List of public libraries where the environmental assessment will be available:

Bellevue Community College Library Media Center
King County Library System - Bellevue Regional Library
King County Library System - Kingsgate Library
King County Library System - Kirkland Library
King County Library System - Lake Hills Library
King County Library System - Newport Way Library
King County Library System - Redmond Regional Library
Lake Washington Technical College, Technical Library
North Seattle Community College Library
Seattle Central Community College, Library
Seattle Public Library - Central Branch
Seattle Public Library - International District/Chinatown Branch
Seattle Public Library - Madrona-Sally Goldmark Branch
Seattle Public Library - Montlake Branch
Seattle Public Library - North East Branch
Seattle Public Library - University Branch
Sound Transit Library and Information Center
University of Washington - Suzzallo and Allen Libraries
University of Washington - Department of Engineering Library
University of Washington - Architecture and Urban Planning
Washington State Library