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Portland-Milwaukie Light Rail Project Supplemental Draft Environmental Impact Statement

Planning and conservation    Transportation and land use projects    Portland-Milwaukie light rail    Supplemental Draft Environmental Impact Statement

Download the entire Supplemental Draft Environmental Impact Statement or the expanded executive summary.

Public comment report

Read the report on comments received on the Supplemental Draft Environmental Impact Statement during the public comment period between May 9 and noon on June 23, 2008.
Download from the TriMet site (25.6M PDF)

The full Supplemental Draft Environmental Impact Statement has been broken into ten parts for easier download and is available through TriMet's project website. 

Cover and table of contents

Includes authorization, contacts and abstract.
Download from the TriMet site (1.4M PDF)

Executive summary

Download from the TriMet site (11.3M PDF)

Chapter 1, Purpose and need

This chapter describes the project’s purpose and the need to complete the light rail segment between Portland and Milwaukie. It provides a geographical and demographic description of the corridor, and presents a description of the corridor’s existing transportation system. It also includes an overview of historic and projected population and employment growth, a description of the existing and projected traffic congestion in the corridor, a summary of the existing and projected impacts of congestion on the operation of the transit system in the corridor, an overview of the land use policies that affect the corridor transportation network, an overview of how state, regional and local transportation policies affect the corridor, and a summary of the project’s goal and objectives.
Download from the TriMet site (15.9M PDF)

Chapter 2, Alternatives considered

This chapter describes the Light Rail Alternative and reviews the previous studies and decisions that led to a proposal for light rail in the project corridor. Section 2.1 provides details of the alternatives, including alignment and design options, in this SDEIS. Section 2.2 includes capital cost and operating and maintenance costs for the Light Rail Alternative. Section 2.3 describes the modes and alignments that have been studied and eliminated from further consideration and why they were eliminated. Appendix L. Background on Alternatives Development, provides additional detail on the modes and alignments that have been studied and why they were eliminated.
Download from the TriMet site (8.2M PDF)

Chapter 3, Environmental analysis and consequences

This chapter discusses the environmental analysis and effects associated with the proposed light rail project. The chapter includes sixteen sections, covering topics including multiple aspects of the built environment (e.g., acquisitions and displacements, land use), the natural environment (e.g., ecosystems, water quality), historic and cultural resources, and safety and security.
Download from the TriMet site (17.8M PDF)

Chapter 4, Transportation

This chapter describes the effects that the Portland-Milwaukie project would have on the regional transportation system. This includes effects on transit, traffic movements, freight movement, and navigable waterways in the corridor.
Download the PDF from the TriMet site (5.9M PDF)

Chapter 5, Financial analysis and evaluation of alternatives

This chapter presents the financial analysis and evaluation of the alternatives and alignment options for the Portland-Milwaukie Light Rail Project. Section 5.1, Financial Analysis, provides information to assess the fiscal feasibility of construction and operations. Section 5.2, Evaluation of Alternatives and Alignment Options, synthesizes key findings of the other chapters of this SDEIS to address measures of the effectiveness of each alternative and alignment option in meeting the Portland-Milwaukie Light Rail Project’s objectives, presents equity considerations, and assesses the major tradeoffs between the alternatives and alignment options.
Download from the TriMet site (5M PDF)

Chapter 6, Community participation, agency coordination and required permits

This section summarizes the community participation process for the Portland-Milwaukie Light Rail Project, describing past activities and elements that will be implemented as part of the public comment period for this SDEIS and leading to the selection of a new Locally Preferred Alternative (LPA). Additional information on community participation activities can be found in Chapter 2, Alternatives Considered (Section 2.1, Screening and Selection Process); and Appendix B, Environmental Justice Compliance.
Download from the TriMet site (4.7M PDF)

Appendices A-E

Appendix A: Agency coordination and correspondence
Appendix B: Environmental justice compliance
Appendix C: Supporting documents
Appendix D: Visual simulations
Appendix E: List of preparers
Download from the TriMet site (8.3M PDF)

Appendices F-L

Appendix F: List of recipients
Appendix G: Properties affected by acquisitions
Appendix H: Conceptual design information
Appendix I: Index
Appendix J: Acronyms and abbreviations
Appendix K: Section 4(f) evaluation
Appendix L: Background on alternatives development
Download from the TriMet site (12M PDF)

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