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SR 520 - Pontoon environmental documents

Library > Environmental documents > Pontoons

WSDOT has completed environmental analysis for the SR 520 Pontoon Construction Project. Construction began in 2011 to build a new casting basin facility and 33 concrete pontoons in Aberdeen, WA. 

Jan. 11, 2011 - Record of Decision (pdf 4.0 mb)

Dec. 2, 2010 - Final Environmental Impact Statement

   Executive Summary (pdf 3.5 mb) 
  Table of Contents (pdf 1.2 mb)
  Chapter 1 - Introduction to the Project (pdf 732 kb) 
  Chapter 2 - Project Alternatives (pdf 3.6 mb) 
  Chapter 3 - Environmental Effects 
    3.0 Introduction (pdf 732 kb)  
  3.1 Ecosystems
  - Wetlands (pdf 1.2 mb)
  - Fish (pdf 2.6 mb)
  - Wildlife (pdf 149 kb)
  3.2 Geology and Soils (pdf 2.9 mb)
  3.3 Hazardous Materials (pdf 597 mb)
  3.4 Water Resources (pdf 1.4 mb)
  3.5 Air Quality (pdf 282 kb)
  3.6 Energy and Climate Change (pdf 228 kb)
  3.7 Cultural Resources (pdf 2.2 mb)
  3.8 Economics (pdf 61 kb)
  3.9 Navigable Waterways (pdf 565 kb)
  3.10 Noise (pdf 533 kb)
  3.11 Public Services and Utilities (pdf 1.6 mb)
  3.12 Land Use (pdf 1.6 mb)
  3.13 Social Elements (pdf 2.6 mb)
  3.14 Transportation (pdf 647 kb)
  3.15 Visual Quality and Aesthetics (pdf 2.5 mb)
  3.16 Section 4(f) Resources (pdf 397 kb)
Chapter 4 - Comparison of the Alternatives (pdf 155 kb)
Chapter 5 - Mitigation (pdf 658 kb)
Chapter 6 - Other Considerations and Next Steps (pdf 204kb)
Chapter 7 - Public and Agency Comments on the Draft EIS (pdf 111 kb)
Attachments
  1 - Preparers
  2 - Distribution List
  3 - References
  4 - Glossary
  5 - Acronyms
  6 - Index
  7 - Appendices
Updated Appendices
  B - Description of Alternatives and Construction Techniques Discipline Report (pdf 8.6 mb)
  T - Draft Environmental Impact Statement Comments and Responses Report (pdf 10.2 mb)
  U - Summary of Effects Technical Memorandum (pdf 343 kb)

July 2010 - SR 520 Pontoon Construction Project Draft Environmental Impact Statement Summary of Comments (pdf 3.45 mb)

May 28, 2010 - Draft Environmental Impact Statement

    Executive Summary (pdf 2.7 mb) 
  Table of Contents (pdf 1.2 mb) 
  Chapter 1 - Introduction to the Project (pdf 710kb)
Chapter 2 - Project Alternatives (pdf 4.4 mb) 
  Chapter 3 - Environmental Effects 
    Introduction (pdf 1.1 mb) 
  Ecosystems (pdf 3.5 mb) 
  Geology and Soils (pdf 530 mb) 
  Hazardous Materials (pdf 403 mb)
  Water Resources (pdf 1.3 mb)
  Air Quality (pdf 428 kb)
  Energy and Climate Change (pdf 396 kb)
  Cultural Resources (pdf 365 kb)
  Economics (pdf 218 kb)
  Navigable Waterways (pdf 249 kb)
  Noise (pdf 822 kb)
  Public Services and Utilities (pdf 314 kb)
  Land Use (pdf 289 kb)
  Social Elements (pdf 603 kb)
  Transportation (pdf 879 kb)
  Visual Quality and Aesthetics (pdf 2.7 mb)
  Section 4(f) Resources (pdf 215 kb) 
  Chapter 4 - Comparison of the Alternatives (pdf 152 kb) 
Chapter 5 - Preferred Alternative and Next Steps (pdf 156 kb)
Attachments (pdf 626 kb)

  Appendices

A

Agency Coordination and Public Involvement Discipline Report (pdf 3.7 mb)

B

Description of Alternatives and Construction Techniques Discipline Report (pdf 4.2 mb)

C

Ecosystems Discipline Report
Part 1 (pdf 4.1 mb)
Part 2
- Part 1 (pdf 3.03 mb)
- Part 2 (pdf 1.4 mb)

D

Geology and Soils Technical Memorandum
- Part 1 (pdf 1.0 mb)
- Part 2 (pdf 5.9 mb)
- Part 3 (pdf 171 kb)

E

Hazardous Materials Technical Memorandum
- Part 1 (pdf 4.4 mb)
- Part 2 (pdf 6.0 mb)
- Part 3 (pdf 7.2 mb)
- Part 4 (pdf 3.1 mb)
- Part 5 (pdf 2.4 mb)
- Part 6 (pdf 3.3 mb)

F

Water Resources Discipline Report
- Part 1 (pdf 1.1 mb)
- Part 2 (pdf 5.0 mb)
- Part 3 (pdf 1.2 mb)

G

Air Quality Technical Memorandum (pdf 3.8 mb)

H

Energy Technical Memorandum (pdf 1.2 mb)

I

Cultural Resources Discipline Report and Technical Reports
Volume 1
- Part 1 (pdf 5.2 mb)
- Part 2 (pdf 5.4 mb)
- Part 3 (pdf 3.6 mb)
- Part 4 (pdf 5.5 mb)
- Part 5 (pdf 4.0 mb)
- Part 6 (pdf 4.6 mb)
- Part 7 (pdf 4.6 mb)
- Part 8 (pdf 1.7 mb)
- Part 9 (pdf 3.6 mb)
- Part 10 (pdf 4.5 mb)
- Part 11 (pdf 5.9 mb)
- Part 12 (pdf 5.4 mb)
- Part 13 (pdf 5.4 mb)
- Part 14 (pdf 4.0 mb)
- Part 15 (pdf 4.1 mb)
- Part 16 (pdf 3.8 mb)
- Part 17 (pdf 4.1 mb)
Volume 2 (pdf 6.5 mb)
Volume 3 (pdf 5.5 mb)

J

Economics Technical Memorandum (pdf 1.1 mb)

K

Navigable Waterways Technical Memorandum (pdf 4.1 mb)

L

Noise Technical Memorandum
- Part 1 (pdf 1.0 mb)
- Part 2 (pdf 1.6 mb)
- Part 3 (pdf 2.0 mb)
- Part 4 (pdf 163 kb)

M

Public Services and Utilities Discipline Report (pdf 2.0 mb)

N

Land Use Technical Memorandum (pdf 2.4 mb)

O

Social Elements Discipline Report (pdf 4.6 mb)

P

Transportation Technical Memorandum
- Part 1 (pdf 4.9 mb)
- Part 2 (pdf 4.4 mb)
- Part 3 (pdf 6.5 mb)

Q

Visual Quality and Aesthetics Technical Memorandum (pdf 4.6 mb)

R

Section 4(f) Resources Technical Memorandum (pdf 758 kb)

S

Indirect and Cumulative Effects Methods Memorandum (pdf 1.6 mb)

Note: Updated PDF files for the Cultural Resources Discipline Report and Technical Reports were added on June 8, 2010. These updated files correct a PDF file error found in the previous online and CD versions.

  List of public libraries where the EIS is available

    Aberdeen Timberland Library
Elma Timberland Library
Hoquiam Timberland Library
Grays Harbor College Library
McCleary Timberland Library
Montesano Timberland Library
Seattle Public Library Central Branch
University of Washington Suzzallo and Allen Libraries
Tacoma Main Library
Westport Timberland Library 


April 2009 - Pontoon Construction Project EIS Scoping Comments Report Addendum (pdf 68kb)

March 2009 - Pontoon Construction Project EIS Scoping Comments Report (pdf 62kb)

January 2008 - Pontoon Construction Project Public Scoping Meeting Comment Summary (pdf 79kb)