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I-405 Corridor Program - TRIP Environmental Assessment and Draft 4 (f) Evaluation

405 - Tukwila to Renton Improvment Project Environmental Assessment and Draft 4(f) Evaluation

On April 4, 2008, WSDOT published an Environmental Assessment for the Tukwila to Renton Improvement Project. The Environmental Assessment contains the results of our studies on how this project may affect the environment.

We published the Notice of Availability for the Finding of No Significant Impact (FONSI) for the Tukwila to Renton Improvement Project on July 23, 2008. Below you can download the FONSI in Adobe Acrobat portable document format (pdf). 

Tukwila to Renton Improvement Project FONSI - Part 1 (pdf 725 kb)
Tukwila to Renton Improvement Project FONSI - Part 2 (pdf 2.6 mb) 
Tukwila to Renton Improvement Project FONSI - Part 3 (pdf 3.0 mb)
Tukwila to Renton Improvement Project FONSI - Part 4 (pdf 3.2 mb)
Tukwila to Renton Improvement Project FONSI - Part 5 (pdf 429 kb)
Tukwila to Renton Improvement Project FONSI - Part 6 (pdf 2.7 mb)
Tukwila to Renton Improvement Project FONSI - Part 7 (pdf 4.5 mb)


Environmental Assessment Cover (256 kb)
Fact Sheet (189 kb)
Title VI Language (94 kb)
Table of Contents (106 kb)

Chapter 1: Executive Summary (pdf 218 kb)
Chapter 2: Why do we need this project? (pdf 175kb)
Chapter 3: Developing the Alternatives (pdf 198 kb)
Chapter 4: Description of the Project (pdf 4.3 mb)
Chapter 5: The Environment: Project Effects (150 kb)
5.1: Traffic and Transportation (pdf 121kb)
5.2: Noise Analysis (pdf 316 kb)
5.3: Communities, Businesses, and Public Services (pdf 3.2 mb)
5.4: Recreational and Cultural Resources (pdf 722 kb)
5.5: Visual Quality (pdf 1.06 mb)
5.6: Water Resources (pdf 2.70 mb)
5.7: Ecosystems (pdf 771 kb)
5.8: Design Options (pdf 197 kb)
5.9: Cumulative Effects (pdf 242 kb)
Chapter 6: Measures to Avoid or Minimize Effects (pdf 192 kb)
Chapter 7: List of Preparers (pdf 88 kb)
Chapter 8: References (pdf 72 kb)

Appendix A: Project Benefits (pdf 62 kb)
Appendix B: Agency and Tribal Correspondences (pdf 1.64 mb)
Appendix C: Section 106 Programatic Agreement (pdf 160 kb)
Appendix D: SR 515 (Talbot Road) Interchange Project (pdf 444 kb)

Discipline Reports and Technical Memos

Air Quality Discipline Report (pdf 4,116 kb)

Draft Section 4(f) Evaluation

Title Page (pdf 246 kb)
Title VI Form (pdf 84 kb)
Table of Contents (pdf 77 kb)
Summary (pdf 3,133 mb)
Acronyms and Abbreviations (pdf 38 kb)
Glossary (pdf 105 kb)
Section 1 (pdf 132 kb)
Section 2 (pdf 4,369 kb)
Section 3 (pdf 95 kb)
Section 4 (pdf 2,399 kb)
Section 5 (pdf 1,042 kb)
Section 6 (pdf 123 kb)
Section 7 (pdf 183 kb)
Section 8 (pdf 63 kb)
Appendix A (pdf 158 kb)
Appendix B (pdf 340 kb)
Appendix C Part 1 (pdf 3,026 kb)
Appendix C Part 2 (pdf 4,737 kb)
Appendix C Part 3 (pdf 4,675 kb)
Appendix C Part 4 (pdf 1,556 kb)
Appendix C Part 5 (pdf 4,641 kb)

Ecosystems Discipline Report
Title Page (pdf 223 kb)
Title VI Form (pdf 73 kb)
Table of Contents (pdf 71 kb)
Summary (pdf 92 kb)
Section 1 (pdf 71 kb)
Section 2 (pdf 2,894 kb)
Section 3 (pdf 233 kb)
Section 4 (pdf 1,362 kb)
Section 5 (pdf 153 kb)
Section 6 (pdf 105 kb)
Section 7 (pdf 56 kb)
Section 8 (pdf 66 kb)
Appendix A (pdf 98 kb)
Appendix B (pdf 76 kb)
Appendix C Part 1 (pdf 2,112 kb)
Appendix C Part 2 (pdf 2,536 kb)
Appendix C Part 3 (pdf 2,967 kb)
Appendix C Part 4 (pdf 2,623 kb)
Appendix D (pdf 94 kb)
Appendix E (pdf 57 kb)
Appendix F Part 1 (pdf 167 kb)
Appendix F Part 2 (pdf 1,167 kb)


Environmental Justice Discipline Report
Title Page (pdf 245 kb)
Title VI Form (pdf 83 kb)
Table of Contents (pdf 70 kb)
Acronyms and Abbreviations (pdf 57 kb)
Glossary (pdf 70 kb)
Sections 1-8 (pdf 4,975 kb)
Appendix A-B (pdf 374 kb)

Land Use Discipline Report
Title Page (pdf 247 kb)
Title VI Form (pdf 84 kb)
Table of Contents (pdf 77 kb)
Summary (pdf 103 kb)
Acronyms and Abbreviations (pdf 59 kb)
Glossary (pdf 74 kb)
Section 1 (pdf 266 kb)
Section 2 (pdf 85 kb)
Section 3 (pdf 728 kb)
Section 4 (pdf 4619 kb)
Section 5 (pdf 93 kb)
Section 6 (pdf 59 kb)
Section 7 (pdf 67 kb)
Section 8 (pdf 1,149 kb)
Appendix A (pdf 121 kb)
Appendix B (pdf 1,149 kb)
Appendix C (pdf 121 kb)
Appendix D (pdf 114 kb)
Appendix E (pdf 61 kb)

Noise Discipline Report 
Title Page (pdf 246 kb)
Title VI Form (pdf 84 kb)
Table of Contents (pdf 71 kb)
Summary (pdf 93 kb)
Acronyms and Abbreviations (pdf 104 kb)
Glossary (pdf 105 kb)
Section 1 (pdf 99 kb)
Section 2 (pdf 4,360 kb)
Section 3 (pdf 422 kb)
Section 4 (pdf 1,110 kb)
Section 5 (pdf 101 kb)
Section 6 (pdf 381 kb)
Section 7 (pdf 89 kb)
Section 8 (pdf 56 kb)
Section 9 (pdf 92 kb)
Appendix A (pdf 69 kb)
Appendix B (pdf 96 kb)
Appendix C (pdf 189 kb)

Transportation Discipline Report
Title Page (pdf 242 kb)
Title VI Form (pdf 80 kb)
Table of Contents (pdf 74 kb)
Summary (pdf 59 kb)
Acronyms and Abbreviations (pdf 54 kb)
Glossary (pdf 64 kb)    
Section 1 (pdf 84 kb)
Section 2 (pdf 4,351 kb)
Section 3 (pdf 93 kb)
Section 4 (pdf 2,039 kb)
Section 5 (pdf 1,109 kb)
Section 6 (pdf 58 kb)
Section 7 (pdf 56 kb)
Section 8 (pdf 60 kb)
Appendix A (pdf 60 kb)
Appendix B (pdf 1,957 kb)
Appendix C (pdf 109 kb)
Appendix D (pdf 67 kb)

Water Resources Discipline Report
Title Page (pdf 244 kb)
Title VI Form (pdf 81 kb)
Table of Contents (pdf 74 kb)
Summary (pdf 64 kb)
Acronyms and Abbreviations (pdf 56 kb)
Glossary (pdf 87 kb)
Section 1 (pdf 78 kb)
Section 2 (pdf 254 kb)
Section 3 (pdf 3,128 kb)
Section 4 (pdf 4,356 kb)
Section 5 (pdf 1,306 kb)
Section 6 (pdf 86 kb)
Section 7 (pdf 57 kb)
Section 8 (pdf 65 kb)
Appendix A (pdf 62 kb)
Appendix B (pdf 174 kb)
Appendix C (pdf 59 kb)

Cultural, Historic, And Archaeological  Technical Memorandum
Title Page (pdf 251 kb)
Title VI Form (pdf 86 kb)
Table of Contents (pdf 85 kb)
Acronyms and Abbreviations (pdf 77 kb)
Summary (pdf 3,557 kb)
Glossary (pdf 91 kb)

Cumulative Effects Analysis Technical Memorandum

Economics Technical Memorandum

Geology and Soils Technical Memorandum
Title Page (pdf 328 kb)
Table of Contents (pdf 102 kb) 
Summary (pdf 252 kb)
Acronyms and Abbreviations (pdf 119 kb)
Glossary (pdf 113 kb)
References Part 1 (pdf 2,744 kb) 
References Part 2 (pdf 4,597 kb)
Appendix (pdf 138 kb)

Hazardous Materials Technical Memorandum
Title Page (pdf 187 kb)
Table of Contents (pdf  15 kb)
Summary (pdf 96 kb)
Acronyms and Abbreviations (pdf 13 kb)
Glossary (pdf 16 kb)
References (pdf 14 kb)
Appendix A (pdf 19 kb)
Appendix B Part One (pdf 4,895 kb)
Appendix B Part Two (pdf 2,753 kb)
Appendix C (pdf 13 kb)

Social Elements, Public Services and Utilities Technical Memorandum

Visual Quality Technical Memorandum