|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
Download Adobe Reader to view PDFs:
Reports
Record of Decision (ROD)
This ROD is the final step in the NEPA process for the I-70 East Project. The ROD explains the decision, identifies the alternatives considered (including the environmentally preferred alternative), and outlines what actions CDOT will take to mitigate potential impacts of the project. The ROD also provides final approval for the first phase project to move forward to construction.
What Improvements Will Be Built?
Improvements to I-70 East will be conducted in phases. The first phase project (the Central 70 Project) includes improvements to an approximately 10-mile stretch of I-70 East from I-25 to Chambers Road, adding one new tolled express lane in each direction, removing the aging 50+-year-old viaduct, lowering the highway between Brighton Boulevard and Colorado Boulevard, and placing a four-acre cover over a portion of the lowered highway. More information is available at central70.codot.gov.
Is the ROD a binding document?
Yes, the ROD is a legal document issued by the Federal Highway Administration. In addition to providing Federal approval for the project, it requires CDOT to fund and implement all mitigation commitments listed in the document.
What community commitments will be implemented as part of the project?
Chapter 5 of the ROD provides a list of all mitigation commitments. This list includes a wide range of measures, including pollution control requirements for construction equipment, funding for affordable housing, and improvements to Swansea Elementary School.
What relationship does the recent air quality conformity determination have to the ROD?
A ROD requires that CDOT demonstrate that the Central 70 Project meets all stringent health-based air quality standards for the Denver metro area. CDOT recently provided this conformity determination, and the supporting analysis, for public review and comment. This analysis adds to an extensive study of air quality impacts, which is outlined in the Final Environmental Impact Statement.
ROD Document
I-70 East Record of Decision (ROD)
Attachment A – Alternatives Maps
Attachment B – Updates to Agency Consultation Addendum
Attachment C – Technical Reports and Addenda
• C1. Revised Elimination of I-270/I-76 Reroute Alternative Technical Memorandum
• C2. Updates to Traffic Technical Report Addendum
• C3. Updates to Conceptual Stage Relocations Technical Report Addendum
• C4. Updates to Hazardous Materials Technical Report Addendum
• C5. Updates to Section 106 Determination of Eligibility and Effects
• C6. Air Quality NEPA Comparison Technical Report
• C7. Air Quality Conformity Technical Report
• C8. Updates to Noise Technical Report
• C9. Updates to Biological Assessment Addendum
• C10. Updates to Hydraulics and Hydrology Technical Report Addendum
• C11. Updates to Wetlands and Other Waters of the US Technical Report Addendum
• C12. Revised Wetland Finding
Attachment D – Section 106 Programmatic Agreement
Attachment E – Comments on the Final EIS
Attachment F – Comments on the Air Quality Documents
Future Information on the Central 70 Project
With the completion of the NEPA process, the Project moves to the next phase. All future updates on the project can be found on CDOT's Central 70 website at central70.codot.gov. Project updates will no longer be added to the www.i-70east.com website, however historical information will remain on the site.
Future email updates will be sent from central70info@state.co.us. Please send an email to central70info@state.co.us to receive updates or ask questions about the project. If you are already receiving email updates on the Project, it is not necessary to sign up again.
Draft Air Quality Conformity Determination and NEPA Comparative Analysis
The Clean Air Act Section 176(c) requires that federally supported highway and transit project activities are consistent with state air quality goals, found in the state implementation plan (SIP). The process to ensure this consistency is called Transportation Conformity. Conformity with the SIP means that transportation activities will not cause new violations of the health-based national ambient air quality standards (NAAQS or "standards"), worsen existing violations of the standards, or delay timely attainment of the relevant standard or required interim milestones.
This document includes an overview of the project and discussion on the Preferred Alternative and the Central 70 Project, which was introduced as Phase 1 of the identified Preferred Alternative in the Final EIS. It also includes updated air quality analysis results and draft conformity determination. Reports attached to the document include: Draft Air Quality Conformity Report and Updates to the Air Quality Technical Report.
|
Air Quality Review and Comment Period Closed. The public review period for the Draft Air Quality Conformity Determination and NEPA Comparative Analysis began on December 16, 2016 and concluded on January 14, 2017. |
Draft Air Quality Document
The document is also available in English and Español at the links below, by request through contactus@i-70east.com, or by calling 303.757.9413.
Draft Air Quality Document (English)
Draft Air Quality Document (Español)
Final Environmental Impact Statement (Final EIS)
The Final Environmental Impact Statement (Final EIS) updates the analysis for the Supplemental Draft EIS (SDEIS) alternatives, and identifies a preferred alternative. This document also responds to the stakeholder comments received during the SDEIS public review period. The Preferred Alternative is identified as the Partial Cover Lowered Alternative with Managed Lanes Option.
|
Final EIS Public Review Period Closed. The public review period for the Final EIS began on January 15, 2016 and concluded on March 2, 2016. |
Final EIS Volume 1
Full document:
VOLUME 1 (34mb)
View by chapter:
Cover, Signed Signature Page, Abstract, Table of Contents (Vol. 1-3), Acronyms and Abbreviations
Chapter 3: Summary of Project Alternatives
Chapter 4: Transportation Impacts and Mitigation Measures
Chapter 5: Affected Environment, Environmental Consequences, and Mitigation (click to expand)
Chapter 7: Section 4(f) Evaluation
Chapter 8: Phased Project Implementation
Chapter 9: Preferred Alternative Mitigation Commitments
Chapter 10: Community Outreach and Agency Involvement
References, List of Preparers, List of Recipients, and Index (click to expand)
Final EIS Volume 2 - Attachment A through P
Full document:
VOLUME 2 (click to view)
View by chapter:
Attachment A – Alternative Maps
Attachment B – Agency Consultation
Attachment C – Alternative Analysis Technical Report
Attachment D – Community Outreach and Agency Involvement Technical Report
Attachment E - Traffic Technical Report
Attachment F – Environmental Justice Technical Report
Attachment G – Conceptual Stage Relocation Technical Report
Attachment H (Part 1) – Hazardous Materials Technical Report
Attachment H (Part 2) – Hazardous Materials Technical Report
Attachment I – Section 106 Determinations of Eligibility and Effects
Attachment J – Air Quality Technical Report
Attachment K – Noise Technical Report
Attachment L – Biological Assessment
Attachment M – Hydrology and Hydraulics Technical Report
• I-70 PCL Drainage Multi Agency Technical Team (MATT) (208mb)
Attachment N – Wetlands and Other Waters of the U.S. Technical Report and Wetland Finding
Attachment O – Aesthetic and Design Guidelines
Final EIS Volume 3 - Attachment Q
Full document:
VOLUME 3 (128mb)
View by chapter:
Attachment Q – Supplemental Draft EIS Comments and Responses (click to expand)
Final EIS Comments
The public review period for the Final EIS began on January 15, 2016 and concluded on March 2, 2016. During that period comments were submitted to CDOT and FHWA through a variety of methods including the project website, emails, written comments or letters, testimony at public hearings, and recorded telephone messages. The comments have been organized into groups as listed below:
Federal, State, and Municipal Agencies
Special Interest Groups and Businesses
Citizen and Public Comments (18mb)
Previous Studies
|
|
Read the: en Español: |
The Supplemental Draft EIS addresses changes and further developments to the project since 2008. The 2008 Draft EIS alternatives have been modified and a new alternative option has been developed that better meets the project's purpose, need, goals, and objectives and satisfies the public's and agencies' expectations. Due to these changes and further developments on the project, this Supplemental Draft EIS identifies environmental impacts not previously identified and includes a detailed analysis of the social, environmental, and economic effects of the project alternatives as required by the federal government according to the National Environmental Policy Act (NEPA). It also explains which alternatives have been eliminated from consideration and why.
SDEIS Volume 1
Full document:
View by chapter:
Signed Signature Page, Abstract, Table of Contents (Vol. 1-3), Acronyms and Abbreviations
Chapter 3: Summary of Project Alternatives
Chapter 4: Transportation Impacts and Mitigation Measures
Chapter 5: Affected Environment, Environmental Consequences, and Mitigation (click to view)
Chapter 7: Community Outreach and Agency Involvement
Chapter 8: Section 4(f) Evaluation
References, List of Preparers, and List of Recipients
SDEIS Volume 2 - Attachment A through Attachment H
Full document:
VOLUME 2 (48mb PDF)
View by chapter:
Attachment B–Agency Consultation
Attachment C–Alternative Analysis Technical Report
Attachment D–Community Outreach and Agency Involvement Technical Report
Attachment E–Traffic Technical Report
Attachment F–Environmental Justice Technical Report
Attachment G–Conceptual Stage Relocation Technical Report
Attachment H–Hazardous Materials Technical Report
SDEIS Volume 3 - Attachment I through Attachment N
Full document:
View by chapter:
Attachment I–Section 106 Determinations of Eligibility and Effects
Attachment J–Air Quality Technical Report
Attachment K–Traffic Noise Technical Report
Attachment L–Biological Assessment
Attachment M–Hydrology and Hydraulics Technical Report
Attachment N–Wetlands and Other Waters of the U.S. Technical Report
SDEIS Comments
The comment period on the Supplemental Draft EIS for I-70 East began on August 29, and closed on October 31, 2014. During that period nearly 900 comments were submitted to CDOT and FHWA through a variety of methods including the project website, emails, written comments or letters, testimony at public hearings, and recorded telephone messages. Every comment that has been received will be reviewed by the project team and responded to individually in the Final EIS. The comments have been organized into groups as listed below:
Federal, State, and Local Agencies
Special Interest Groups and Businesses (16mb PDF)
Public Comments that included Attachments/Letters* (48mb PDF)
* Private information removed.
The project team has completed the Draft Environmental Impact Statement (DEIS) for I-70 in east Denver. The DEIS includes a detailed analysis of the social, environmental, and economic effects of the project alternatives as required by the federal government according to NEPA. The DEIS was made available to the public for comment from November 14, 2008 to March 31, 2009.
You may click the individual titles to view or download a single chapter or technical report. To download full volumes in PDF format, click the "VOLUME" links. To view the DEIS comments we received during the formal comment period, see below. Download Adobe Reader: Desktop | Mobile 
Volume 1 - DEIS
Click to view by individual chapter:
Chapter 3: Alternatives Considered
Chapter 4: Transportation Impacts and Mitigation Measures
Chapter 5: Affected Environment, Environmental Consequences, and Mitigation
Chapter 6: Community Outreach and Agency Involvement
Chapter 7: Section 4(f) Evaluation
References, List of Preparers, and List of Recipients
Volume 2 - Appendices
Click to view by individual chapter:
Appendix B – Agency Coordination
Appendix C – National Environmental Policy Act (NEPA) Clean Water Act Merger Report
Appendix D – Historic Preservation
Volume 3 - Technical Reports
Click to view by individual chapter:
Alternatives Analysis Technical Report
Environmental Justice Technical Memorandum
Hazardous Materials Technical Report
Hydrology and Hydraulics Technical Report
Right of Way and Relocations Technical Report
Traffic Noise Technical Report
Wetlands and Waters of the U.S. Technical Report and Appendix A
Wetlands and Waters of the U.S. Appendix B
DEIS Comments
View the DEIS comments we received during the formal comment period:
- Executive Summary
- MIS Background
- Corridor Purpose and Need Summary
- Transportation Alternative Evaluation Process
- Recommended Corridor Investment
- Implementation