HomeMy WebLinkAboutDOE6_Environmental (SEPA) Determination of Nonsignificance (DNS).pdf600 -108th Avenue NE, state 405
Bellevue, VVA 98004
Main 425-456-8500
Fax 425-456-8600
MIS: NB82-250
March 14, 2006
SUBJECT: Determination of Nonsignificance (DNS) for the 1-405, SR 169 to 1-90 —
Renton to Bellevue Project
Dear Environmental Assessment Recipient:
You earlier received Washington State Department of Transportation's (WSDOT)
document entitled, 1-40-5, SR 169 to 1-90 — Renton to Bellevue Project, Environmental
Assessment. This document is WSDOT's SEPA environmental checklist for this project.
We completed the document in March 2006, and submitted it to you for your review. If
for some reason your copy of the document has been misplaced, please contact us at 425-
456-8610 and we will replace it.
After reviewing our environmental checklist and other information on file with WSDOT,
we have determined that this proposal, the 1-405, SR 169 to 1-90 — Renton to Bellevue
Project, will not have a probable significant adverse impact on the environment. A copy
of the determination of nonsignificance for this proposal is attached.
You are invited to comment on this DNS by submitting written comments no later than
March 31, 2006, to Allison Ray at the 1-405 Project Office, 600 — 108'h Avenue NE, Suite
405, Bellevue, WA 98004, or by email at A Hi son. ray((-i.J405. wsdot. wa. �ov.
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1-405 Environmental Manager
Enclosure
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DETERMINATION OF NONSIGNIFICANCE (DNS)
Description of proposal:
The Renton to Bellevue Project provides for improvements to approximately 8 miles of I-
445 (milepost 3.8 to milepost 11.9) from SR 169 in the City of Renton north to the
northern on- and off -ramps of the I-90 interchange in the City of Bellevue. These
improvements are a part of the I-405 Corridor Program. The Proposed Action includes
the following improvements to support construction and operation of the facility:
• Addition of two new general-purpose lanes on I-405 in each direction from SR
169 through the I-90 interchange;
■ Realignment of I-405 to bring it up to current freeway standards where feasible;
• Construction of a new in-line bus rapid transit station in the vicinity of 112th
Avenue SE;
• Construction of a transit/high-occupancy vehicle (HOV) direct access ramp at
N 8th Street in coordination with Sound Transit;
• Realignment and reconfiguration of eight interchanges;
• Changes to local roadways related to interchange improvements and I-405
widening;
• Construction of stormwater management facilities; and
• Application of Context Sensitive Solutions (CSS) to incorporate visually -pleasing
and community -oriented features into the project design.
The Renton to Bellevue Project will provide many short- and long-term benefits. Some
of these benefits are:
• Shortening periods of congestion on I-405 between Renton and Bellevue;
• Increasing transit reliability and safety with the addition of a new in-line station,
direct access ramps, and other transit improvements;
• Improving operations at eight interchanges;
• Improving water quality conditions in the project area by treating runoff from
approximately 290 acres of new and existing impervious surfaces;
• Providing benefits to threatened salmon species by improving water quality;
• Improving fish passage by installing fish -friendly culverts or structures beneficial
to fish on several streams within the area;
• Constructing four new noise walls and relocating five existing noise walls to the
edge of right of way; and
• Implementing CSS design principles to improve project appearance.
Proponent: Washington State Department of Transportation
Location of proposal, including street address, if any:
The Renton to Bellevue Project extends for approximately 8 miles of I-405 (milepost 3.8
to milepost 11.9) from SR 169 north to the northern on- and off -ramps of the I-90
interchange.
Lead Agency: Washington State Department of Transportation
The lead agency for this proposal has determined that it does not have a probable
significant adverse impact on the environment. An environmental impact statement (EIS)
is not required under RCW 43.21C.030 (2)(c). This decision was made after review of a
completed environmental checklist and other information on file with the lead agency.
This information is available to the public on request. Please note that the checklist
document is titled I-405, SR 169 to I-90 — Renton to Bellevue Project Environmental
Assessment, and it was completed in March 2006. The document is available to be read
during normal business hours at: I-405 Project Office, 600 —108th Avenue NE, Suite 405,
Bellevue 98004; Bellevue Community College Library, Bellevue Regional Library,
Bothell Regional Library, Kingsgate Library, Kirkland Library, Mercer Island Library,
Renton Public Library, Foster Library, and University of Washington Libraries (Bothell
and Suzzallo). The document is also available electronically at
www. wsdot. wa.govlprojectsli405lcorridorllibrarylR7Bea.
❑ There is no comment period for this DNS.
M This DNS is issued under WAC 197-11-340(2); the lead agency will not act on this
proposal for 14 days from the date below. Comments must be submitted by March 31,
2006.
Responsible Official: Allison Ray
Position/Title: WSDOT Environmental Manager, I-405 Project
Address: 1-405 Project Office, 600 —108th Avenue NE, Suite 405, Bellevue, WA 98004
Phone: 425-456-8610
Date: March 4, 2006
Signature: