Environmental and Reports
Environmental Documents
Alaskan Way Viaduct Replacement Project
- Record of Decision - August 2011
- Final Environmental Impact Statement and Section 4(f) - July 2011
- Supplemental Draft Environmental Impact Statement and Draft Section 4(f) - October 2010
- Supplemental Draft Environmental Impact Statement - July 2006
- Draft Environmental Impact Statement - March 2004
South Holgate Street to South King Street Viaduct Replacement Project
- Finding of No Significant Impact - February 2009
- Environmental Assessment - June 2008
Battery Street Tunnel Fire and Safety Improvements Project
- SEPA Checklist - October 2008
South Massachusetts Street to Railroad Way South Electrical Line Relocation
- SEPA checklist - February 2008
Alaskan Way Viaduct Replacement Project | (August 2011)
Record of Decision
- Record of Decision (pdf 1.7 mb)
- Section 106 Memorandum of Agreement (pdf 510 kb)
- Final EIS Comments and Responses (pdf 23 mb)
Alaskan Way Viaduct Replacement Project | (July 2011)
Final Environmental Impact Statement and Section 4(f)
- Cover/Table of Contents (pdf 1.8 Mb)
- Summary (pdf 9 Mb)
- Chapter 1 - Introduction (pdf 1.4 Mb)
- Chapter 2 - Alternatives Development (pdf 1.5 Mb)
- Chapter 3 - Alternatives Description (pdf 3 Mb)
- Chapter 4 - Project Area (pdf 7 Mb)
- Chapter 5 - Permanent Effects (pdf 13 Mb)
- Chapter 6 - Construction Effects (pdf 2 Mb)
- Chapter 7 - Cumulative (pdf 1.1 Mb)
- Chapter 8 - Mitigation (pdf 936 Kb)
- Chapter 9 - Comments (pdf 1.1 Mb)
- Final Section 4(f) Evaluation (pdf 1.3 kb)
- Acronyms/References/Index (pdf 777 kb)
- Complete EIS Chapters - single file download (pdf 42.2 Mb)
Appendices:
- Public involvement Discipline Report (pdf 1.4 mb)
- Alternatives Description and Construction Methods (pdf 2.9 mb)
- Transportation Discipline Report (pdf 22 mb)
- Visual Quality Discipline Report (pdf 2.1 mb)
- Visual Simulations (pdf 10 mb)
- Noise Discipline Report (pdf 2.1 mb)
- Land Use Discipline Report (pdf 5.7 mb)
- Social Discipline Report (pdf 7.2 mb)
- Historic, Cultural, and Archaeological Resources (pdf 9.8 mb)
- Section 4(f) Supplemental Materials (pdf 1.6 mb)
- Public Services and Utilities Discipline Report (pdf 1 mb)
- Economics Discipline Report (pdf 1.7 mb)
- Air Discipline Report (pdf 1.8 mb)
- Wildlife, Fish and Vegetation Discipline Report (pdf 965 kb)
- Surface Water Discipline Report (pdf 3.2 mb)
- Earth Discipline Report (pdf 2.4 mb)
- Hazardous Materials Discipline Report (pdf 1.2 mb)
- Energy Discipline Report (pdf 1.2 mb)
-
2004 Draft EIS and 2006 Supplemental Draft EIS Comments and Responses
Part I (pdf 52 mb) | Part II (pdf 42 mb) - 2010 Supplemental Draft EIS Comments and Responses (pdf 70 mb)
- Final EIS Correspondence (pdf 58.8 mb)
- FHWA and WSDOT Response to Additional Review of the Impacts of Deep Bored Tunnel Tolling Diversion on City Streets; Identification of Mitigation (pdf 3.7 mb)
- Screening Documents (pdf 10.5 mb)
- Tolling Re-evaluation Memo (pdf 3.6 mb)
Alaskan Way Viaduct Replacement Project | (October 2010)
Supplemental Draft Environmental Impact Statement and Draft Section 4(f)
The comment period for the 2010 SDEIS was held from Oct. 29 to Dec 13, 2010
- Abstract and Table of Contents (pdf 1 Mb)
- Chapter 1 - Introduction (pdf 1.7 Mb)
- Chapter 2 - Summary (pdf 10.8 Mb)
- Chapter 3 - Alternatives Development (pdf 3.5 Mb)
- Chapter 4 - The Project Area (pdf 7 Mb)
- Chapter 5 - Bored Tunnel Alternative (pdf 10.4 Mb)
- Chapter 6 - Construction (pdf 1.7 Mb)
- Chapter 7 - Cumulative Effects (pdf 4.9 Mb)
- Chapter 8 - Comparison of Alternatives (pdf 7.7 Mb)
- Chapter 9 - Tolling (pdf 9.3 Mb)
- Draft Section 4(f) Evaluation (pdf 1.2 kb)
- Reference Pages (pdf 528 kb)
- Comment Form (pdf 28 kb)
Appendices:
- Public Involvement Discipline Report (pdf 1 mb)
- Alternatives Description and Construction Methods Discipline Report (pdf 6.5 mb)
- Transportation Discipline Report (pdf 16 mb)
- Visual Quality Discipline Report (pdf 5.6 mb)
- Visual Simulations (pdf 5.6 mb)
- Noise Discipline Report (pdf 2.2 mb)
- Land Use Discipline Report (pdf 4.7 mb)
- Social Discipline Report (pdf 4.2 mb)
- Section 106: History, Cultural and Archaeological Resources Discipline Report (pdf 30.2 mb)
- Section 4(f) Supplemental Materials (pdf 2.3 mb)
- Public Services and Utilities Discipline Report (pdf 1 mb)
- Economics Discipline Report (pdf 1.9 mb)
- Air Discipline Report (pdf 2.3 mb)
- Wildlife, Fish and Vegetation Discipline Report (pdf 938 kb)
- Surface Water Discipline Report (pdf 5.8 mb)
- Earth Discipline Report (pdf 4.3 mb)
- Hazardous Materials Discipline Report (pdf 10 mb)
- Energy Discipline Report (pdf 1.5 mb)
- Project History Report (pdf 5.4 mb)
- Supplemental Draft EIS Annotated Outline (pdf 481 kb)
South Holgate Street to South King Street Viaduct Replacement Project
Finding of No Significant Impact and Final Section 4(f) Evaluation (February 2009)
- Cover, Table of Contents, Acronyms (pdf 430 kb)
- Chapter 1 - Updated Project Description (pdf 5.7 Mb)
- Chapter 2 - Coordination and Comments (pdf 29 kb)
- Chapter 3 - Determination and Findings (pdf 45 kb)
- Section 4(f) Evaluation (pdf 290 kb)
- Attachment 1 - Errata to the EA and Discipline Reports (pdf 10.8 Mb)
- Attachment 2 - Notice of Availability of FONSI and SEPA Determination of Nonsignificance (pdf 82 kb)
- Attachment 3 - FONSI Distribution List (pdf 24 kb)
- Attachment 4 - Mitigation Commitment List (pdf 188 kb)
- Attachment 5 - Comments and Responses (pdf 7.6 Mb)
- Attachment 6 - Memorandum of Agreement (pdf 585 kb)
Battery Street Tunnel Fire and Safety Improvements Project (October 2008)
- SEPA Determination of Nonsignificance (pdf 92 kb)
- Environmental Checklist (pdf 1.3 Mb)
- Air Quality Discipline Report (pdf 911 kb)
- Transportation Discipline Report (pdf 3 Mb)
South Holgate Street to South King Street Viaduct Replacement Project (June 2008)
- Cover and Executive Summary (pdf 0.86 Mb)
- Chapter 1 - Purpose and Need (pdf 571 kb)
- Chapter 2 - Alternative Development (pdf 764 kb)
- Chapter 3 - Permanent Effects and Mitigation (pdf 2.1Mb)
- Chapter 4 - Construction Effects and Mitigation (pdf 3.5Mb)
- Draft Section 4(f) and Reference (pdf 277 kb)
- Complete (Cover through Reference, no appendices) (pdf 7.7 Mb)
Appendices:
- Glossary (pdf 51 kb)
- Potential Mitigation Measures (pdf 118 kb)
- Agency - Tribal Correspondence (pdf 3.4 mb)
- Draft Section 4(f), Parts A, B and C (pdf 2 mb)
- Air Quality Discipline Report (pdf 1.4 mb)
- Transportation Discipline Report (pdf 5 mb)
-
Technical Memoranda (20 separate files)
- Alternative Description and Construction Technical Memorandum (pdf 3.1 mb)
- Archaeological Resources Section 106 Technical Memorandum Part I (pdf 9.2 mb) | Part II (pdf 9.8 mb) | Part III (pdf 4.5 mb)
- Economics Technical Memorandum (pdf 1.1 mb)
- Environmental Justice Technical Memorandum (pdf 1.4 mb)
- Geology and Soils Technical Memorandum (pdf 1.5 mb)
- Hazardous Materials Technical Memorandum (pdf 7.2 mb)
- Historic Resources Section 106 Technical Memorandum (pdf 692 kb)
- Land Use and Shorelines Technical Memorandum (pdf 840 kb)
- Noise and Vibration Technical Memorandum (pdf 1.3 mb)
- Parks and Recreation Technical Memorandum (pdf 1 mb)
- Public Involvement Technical Memorandum (pdf 338 kb)
- Public Services and Utilities Technical Memorandum (pdf 486 kb)
- Relocations Technical Memorandum (pdf 377 kb)
- Social Resources Technical Memorandum (pdf 1.5 mb)
- Visual Quality Technical Memorandum (pdf 1.9 mb)
- Water Resources Technical Memorandum (pdf 9.2 mb)
- Draft Memorandum of Agreement (pdf 248 kb)
South Massachusetts Street to Railroad Way South Electrical Line Relocation (February 2008)
- SEPA Determination of Nonsignificance (pdf 69 kb)
- Environmental Checklist (pdf 1 Mb)
- Addendum to SEPA Environmental Checklist April 2008 (pdf 59 kb)
- Notice of Action April 2008 (pdf 72 kb)
- Vicinity Map, Duct Bank Alignment and Transmission Contingency Alignment (pdf 324 kb)
Alaskan Way Viaduct and Seawall Replacement
Supplemental Draft Environmental Impact Statement (July 2006)
- Abstract and Table of Contents (pdf 1.4 kb)
- Chapter 1 - Introduction (pdf 1.6 mb)
- Chapter 2 - Project Update (pdf 1.1 mb)
- Chapter 3 - Summary (pdf 8.6 mb)
- Chapter 4 - The Alternatives (pdf 2.2 mb)
- Chapter 5 - Project Effects (pdf 8.2 mb)
- Chapter 6 - Construction (pdf 2.5 mb)
- Chapter 7 - Construction Effects (pdf 3.3 mb)
- Chapter 8 - Other Things To Consider (pdf 650 kb)
- Reference Pages (pdf 2.3 mb)
- Comment Form (pdf 80 kb)
Appendices:
- Agency and Public Coordination (pdf 397 kb)
- Alternatives Description and Construction Methods Technical Memorandum (pdf 9 mb)
- Transportation Discipline Report (pdf 3.6 mb)
- Visual Quality Technical Memorandum (pdf 553 kb)
- Visual Simulations (pdf 2.9 mb)
- Noise and Vibration Discipline Report (pdf 582 kb)
- Land Use and Shorelines Technical Memorandum (pdf 530 kb)
- Parks and Recreation Technical Memorandum (pdf 968 kb)
- Social Resources Technical Memorandum (pdf 1.5 mb)
- Environmental Justice Technical Memorandum (pdf 468 kb)
- Relocations Technical Memorandum (pdf 2.7 mb)
- Historic Resources Technical Memorandum (pdf 2.3 mb)
- Archaeological Resources and Traditional Cultural Places Technical Memorandum (pdf 815 kb)
- Section 4(f) Evaluation Parts A, B, C and D (pdf 6.2 mb)
- Public Services and Utilities Technical Memorandum (pdf 1.1 mb)
- Economic Technical Memorandum (pdf 802 kb)
- Air Quality Discipline Report (pdf 696 kb)
- Fisheries, Wildlife, and Habitat Discipline Report (pdf 1.5 mb)
- Water Resources Discipline Report (pdf 893 kb)
- Geology and Soils Technical Memorandum (pdf 420 kb)
- Hazardous Materials Discipline Report (pdf 4.1 mb)
- Energy Technical Memorandum (pdf 314 kb)
- Alternatives and Options Drawings (pdf 7 mb)
- Supplemental Draft EIS Annotated Outline (pdf 414 kb)
Draft Environmental Impact Statement (March 2004)
- Cover and Table of Contents (pdf 661 kb)
- Chapter 1 - Introduction (pdf 227 kb)
- Chapter 2 - Summary and Comparison of Alternatives (pdf 4.3 mb)
- Chapter 3 - Project Area Then and Now (pdf 3.9 mb)
- Chapter 4 - Developing Alternatives (pdf 1.3 mb)
- Chapter 5 - Rebuild Alternative (pdf 1.4 mb)
- Chapter 6 - Aerial Alternative (pdf 1.5 mb)
- Chapter 7 - Tunnel Alternative (pdf 1.4 mb)
- Chapter 8 - Bypass Tunnel Alternative (pdf 1.5 mb)
- Chapter 9 - Surface Alternative (pdf 1.4 mb)
- Chapter 10 - Construction Impacts and Mitigation (pdf 3.3 mb)
- Chapter 11 - Other Things to Consider (pdf 284 kb)
- Acronyms (pdf 39 kb)
- Index (pdf 483 kb)
- References and List of Preparers (pdf 2.9 mb)
- Appendices and Distribution List (pdf 43 kb)
- Purpose and Need Statement (pdf 39 kb)
Appendices:
- Agency and Public Coordination (pdf 8.3 mb)
- Alternatives and Construction Methods (pdf 2.8 mb)
- Transportation Discipline Report (pdf 8.3 mb)
- Visual Quality Technical Memorandum (pdf 2.4 mb)
-
Visual Simulations (in three files)
Part I (pdf 6.6 mb) | Part II (pdf 6.9 mb) | Part III (pdf 5.4 mb) - Noise and Vibration Discipline Report (pdf 2.4 mb)
- Land Use and Shorelines Technical Memorandum (pdf 1.7 mb)
- Parks and Recreation Technical Memorandum (pdf 2.1 mb)
- Social Resources Technical Memorandum (pdf 2.4 mb)
- Environmental Justice Technical Memorandum (pdf 693 kb)
- Relocations Technical Memorandum (pdf 388 kb)
- Historic Resources Technical Memorandum (pdf 1.6 mb)
- Archaeological Resources (pdf 3.4 mb)
- Section 4(f) Evaluation (pdf 1.9 mb)
- Public Services and Utilities Technical Memorandum (pdf 877 kb)
- Economic Technical Memorandum (pdf 1.6 mb)
- Air Quality Discipline Report (pdf 2.3 mb)
- Fisheries, Wildlife, and Habitat Discipline Report (pdf 65. mb)
-
Water Resources (in two files)
Part I (pdf 4.7 mb) | Part II (pdf 5.9 mb) - Geology and Soils Technical Memorandum (pdf 2.7 mb)
- Hazardous Materials Discipline Report (pdf 6.2 mb)
- Energy Technical Memorandum (pdf 285 kb)
-
Alternatives and Options Drawings (in two files)
Part I (pdf 4.7 mb) | Part II (pdf 6.1 mb) -
Design Variations (in two files)
Part I (pdf 8.8 mb) | Part II (pdf 6.9 mb) - Annotated Outline (pdf 300 kb)