Supplemental Draft Environmental Impact Statement

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Table of Contents (148.58 KB)
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Cover Sheet (508.07 KB)
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Executive Summary (11.25 MB)
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Chapter 1 – Purpose and Need of the Project (1.22 MB)
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Chapter 2 – Project Alternatives (2.72 MB)
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Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)

Attachments

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Acronyms and Abbreviations (90.25 KB)
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References (130.44 KB)
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List of Preparers (181.78 KB)
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List of Supporting Technical Documentation (72.82 KB)
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List of Distribution and Notice of Availability (140.47 KB)
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Agency Letters (9.9 MB)
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Summary of Permits and Clearances Needed (88.25 KB)
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Summary of Potential Mitigation (350.28 KB)
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Summary of Public Involvement and Agency Coordination (501.71 KB)
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Index (147.58 KB)
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Section 4(f) (Parks, Recreation, and Open Space Resources Historic Sites) (93.36 MB)
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Cost Risk Assessment Summaries (479.89 KB)

Technical Reports

Technical report topics are shown below. You can access the level of detail that is right for you by following the links to the full supplemental memorandum or revised technical report, or by referencing the chapter and page number in the Supplemental Draft EIS.

Topic	Supplemental Memo or Revised Technical Report	Location in Supplemental DEIS
Acquisitions and Displacements	Document Acquisitions and Displacements Supplemental Memo (6.75 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Air Quality	Document Air Quality Supplemental Memo (948.47 KB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Climate Change	Document Climate Change Supplemental Memo (1.37 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Cultural Resources	Document Cultural Resources Supplemental Memo (87.31 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Economic Impacts	Document Economic Impacts Supplemental Memo (1.11 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Environmental Justice	Document Environmental Justice Supplemental Memo (2.93 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Hazardous Materials	Document Hazardous Materials Supplemental Memo (2.31 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Hydraulic Impact Analysis	Document Hydraulic Impact Analysis Supplemental Memo (13.3 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Land Use	Document Land Use Supplemental Memo (3.73 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Noise and Vibration	Document Noise and Vibration Supplemental Memo (1.94 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Parks and Recreation	Document Parks and Recreation Supplemental Memo (2.42 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Public Services	Document Public Services Supplemental Memo (1.37 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Right-of-Way	Document Right-of-Way Supplemental Memo (2.44 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Social/Neighborhood	Document Social Neighborhood Supplemental Memo (2 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Soils and Geology	Document Soils and Geology Supplemental Memo (890.75 KB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Stormwater	Document Stormwater Supplemental Memo (913.11 KB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Transportation	Document Transportation Supplemental Memo (8 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Utilities	Document Utilities Revised Technical Report (5.9 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Vegetation, Wildlife, and Aquatic Species	Document Vegetation Wildlife and Aquatic Species Supplemental Memo (3.83 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Visual Resources	Document Visual Resources Revised Technical Report (19.07 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)
Wetlands and Waters	Document Wetlands and Waters Supplemental Memo (2.64 MB)	Document Chapter 3 – Affected Environment and Environmental Consequences (12.79 MB)

Additional Reports and Memos

The February 2021 Draft EIS and its supporting documents are available for download on the project website.

Supplemental Draft Environmental Impact Statement

On this page

Supplemental Draft Environmental Impact Statement

Attachments

Technical Reports

Additional Reports and Memos

Supplemental Environmental Technical Report Supporting Documents

Design Technical Reports

Design Technical Reports Supporting Documents

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