|
Project Title & Location
Springbrook Creek Wetland Mitigation and Habitat Bank (Nickel)
WIN: U40502C
PIN: 840502B
|
Project Description
This project is a partnership with the City of Renton to create a wetland bank. This wetland bank establishes compensatory mitigation in advance of unavoidable impacts to wetlands and other aquatic resources for future projects within the wetland bank’s service area (portions of WRIAs 8 and 9), including I-405. The wetland bank consists of five units, totaling 130 acres. As specified performance standards are met, incremental credits from the wetland bank become available for use.
|
|
Contractor/Consultant
Scarsella Bros., Inc.
|
|
Recent Progress
On-site construction activities began in early April 2007. Construction activities to date include installation of environmental protection and temporary erosion control features; final grading and placement of soil amendment and bark in Unit E; bark placement and hummock construction in Units A and B; beginning excavation of Unit C; hydroseeding of Unit C for winter shutdown; and installation of Informational Signs for Units A, B, C and E. Physical completion of the project is approximately 43 percent. Note that reported project costs and milestones shown below are based on the Legislature’s Final 2007 Transportation Supplemental Budget (07LegFin).
|
|
Design Construction Impacts
There are no roadway construction impacts. Improvements will be on property owned by the City of Renton, and will include the following: (1) increasing the wetland area; (2) improving the hydrologic, water quality, and habitat functions; (3) increasing fish refuge/rearing habitats; and (4) promoting environmental education.
|
|
Environmental Impacts / Compliance
The site has been stabilized for winter shutdown.
|
Impacts to Traffic
No roadway closures are expected.
|