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This website contains updated information only for those corridors actively in construction, the Southeast Rail Extension and North Metro Rail. All other content on this website is meant for historical purposes only and may not be up-to-date. Please visit RTD-Denver.com for the latest information about RTD.

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Northwest Rail Line Final Environmental Evaluation

Since 2007, the RTD has been studying the impacts of providing rail service from Denver Union Station to Longmont in the Northwest Rail Line Environmental Evaluation (EE) as part of the voter-approved RTD FasTracks Program. The Northwest Rail Line (NWR) is a proposed 41-mile commuter rail project from Denver Union Station to Longmont, passing through North Denver, Adams County, Westminster, Broomfield, Louisville and Boulder.  

In February 2010, RTD released the NWR Draft EE for public review. The release of the document was followed by a 30-day comment period. Three project-wide public meetings took place in March 2010 to present the NWR Draft EE to the public and to solicit comments, feedback and input. More than 200 individuals attended the meetings with nearly 80 comments received during the comment period. On May 18, 2010, the RTD Board of Directors adopted the NWR Final EE; this action allows the project to move towards final design, construction and operation as funding becomes available for the FasTracks Program. As the project advances, RTD will continue to work with local, state and federal agencies, local jurisdictions, stakeholder groups and members of the general public along the NWR project to address issues or concerns relating to this project.

All comments and responses are included in their entirety in the Final EE. A summary of the most common issues is included in the latest issue of the Northwest Rail Corridor Times newsletter.

The NWR Final EE can be downloaded by clicking on the links below. Please note the file sizes, as some of the contents may take a few moments to load. All documents are PDF files.

Volume I Cover, Table of Contents & Acronyms and Abbreviations (1.87 Mb)

Executive Summary (1.96 Mb)
Provides an overview of the document and a summary of the impacts and mitigations.

Chapter 1, Purpose and Need (4.02 Mb)
Presents a discussion of the purpose of the project, the need for mobility improvements in the corridor and the goals for the project.

Chapter 2, Alternatives Considered (6.64 Mb)
Describes the alternatives considered during the environmental alternatives analysis, which was used to select the Preferred Alternative for the Northwest Rail Line.

Chapter 3, Affected Environment and Environmental Consequences
After describing the existing social and natural environmental conditions in the study area, this chapter summarizes the anticipated impacts of the Northwest Rail Line and proposed mitigation measures by resource, according to the sections listed here:

•    Section 3.0 - Introduction (1.46 Mb)

•    Section 3.1 - Social Impacts & Community Facilities (3.33 Mb)

•    Section 3.2 - Land Use, Zoning & Economic Considerations (2.40 Mb)

•    Section 3.3 - Land Acquisition, Displacements, & Relocation of Existing Uses     
     (1.06 Mb)

•    Section 3.4 - Historic, Archaeological, & Cultural Resources (4.18 Mb)

•    Section 3.5 - Visual & Aesthetic Qualities (1.81 Mb)

•    Section 3.6 - Parklands, Open Space, & Recreation Areas (2.04 Mb)

•    Section 3.7 - Air Quality & Energy (295 Kb)

•    Section 3.8 - Noise & Vibration (2.45 Mb)

•    Section 3.9 - Biological Resources: Fish, Wildlife, Vegetation, and Threatened &
      Endangered Species (1.44 Mb)

•    Section 3.10 - Natural Resources (1.38 Mb)

•    Section 3.11 - Hazardous Materials (182 Kb)

•    Section 3.12 - Public Safety & Security (203 Kb)

•    Section 3.13 - Utilities (180 Kb)

Chapter 4, Transportation Systems (3.35 Mb)
Discusses the existing transportation system (e.g. vehicular traffic, bus routes, freight service, etc.), the anticipated impacts to those systems, and proposed mitigations.

Chapter 5, Public Comment & Agency Coordination (2.45 Mb)
Describes the public involvement process implemented from the scoping period through the release of the Final EE, including coordination with the Local Governments and Agencies.

Chapter 6, List of EE Preparers (26 Kb)

Chapter 7, References (704 Kb)
List of resources referenced during the creation of the Final EE.
Volume II Cover and Appendices List(1.68 Mb)

Appendix A: Section 404 (B) (1) Showing (4.45 Mb)

Appendix B: Programmatic Cumulative Effects Analysis (3.34 Mb)

Appendix C: Agency Correspondence
Part A (6.60 Mb)   Part B (6.08 Mb)

Appendix D: Cultural Resources Information
Available on CD by request due to the large size of the digital file.

Appendix E: Preliminary Engineering
Available on CD by request due to the large size of the digital file.

Appendix F: Project Atlas
Part A (8.03 Mb)   Part B (7.62 Mb)   Part C (7.05 Mb)   Part D (6.44 Mb)

Appendix G: Response to Comments (8.21 Mb)

Addendum I: Additional Response to Comments (304 Kb)

Copies of the NWR Draft EE are still available by request. Contact Marta Sipeki, RTD FasTracks Public Information, at 303-299-6921.

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