Project Name

PR17-000278 WSDOT, I-405 Renton to Bellevue Project

LUA Name

I-405 Renton to Bellevue Widening and ETL Project Critical Areas Exemption

Alias Names

I-405 Renton to Bellevue Widening and ETL Project CAE, I-405 Renton to Bellevue Widening and ETL Project Critical Areas Exemption

Apply Date

3/16/2020

Parcel Number

3224059010

Plan Status

Approved

Key Words

Corner of NE 43rd St and Jones Ave NE

Community Planning Area

Kennydale

Zoning District

(RC) Resource Conservation

LUA Application Type

Critical Areas Exemption Review

Project/File Description

The I-405 Renton to Bellevue Express Toll Lane Project contractor is requesting a Critical Areas Exemption to allow access through a wetland buffer to access geotechnical investigation locations and to conduct work along I-405 in the area between May Creek and NE 44th St. The critical areas exemption is necessary to allow Flatiron Lane Joint Venture to access the critical areas along the east side of I-405 via the corner of NE 43rd St and Jones Ave NE, rather than the northbound I-405 off-ramp to NE 44th St. Site access from the NE 43rd St and Jones Ave NE is considered to be safer from the proposed impacted area. Access would result in temporary impacts to Wetland 7.2R and Wetland 7.3R buffers in the form of temporary vegetation reduction of approximately 1,600 square feet. The project’s Joint Aquatic Resource Permit Application (JARPA) from November 9, 2018 estimated 5,746 square feet of temporary buffer impact in this vicinity. The additional area would increase temporary buffer impact to Wetland 7.3R buffer by up to 2,000 square feet. Existing buffer conditions include an unvegetated area of mostly gravel, along with vegetated areas dominated by Himalayan blackberry (Rubus armeniacus). Existing surface features within the buffer include a guardrail, right-of-way fencing and local roadway signage. To minimize the temporary disturbances proposed, the area would be initially stabilized and finally restored with native vegetation and grass seed mix as part of the revegetation and restoration work within the project area. The Renton to Bellevue project was funded in the 2015 Connecting Washington transportation package. The project will add new capacity to create a two-lane express toll lane system. The specific boring locations have been identified as follows: W37-20, W39-20, W222-20 and W223-20.

Associated File Number

PR17-000278

Project Completion Date

3/17/2020

Status

Open