HomeMy WebLinkAboutTIS 2025-11-24 Item 1C - Grant Acceptance - King County Open Space-River Corridors Grant for Chinook Wind Extension Design & ConstructionThomas McLeod, Mayor
Public Works Department - Jen Tetatzin, PE, PMP - Director
INFORMATIONAL MEMORANDUM
TO: Transportation and Infrastructure Services Committee
FROM: Jen Tetatzin, Public Works Director
BY: Catrien de Boer, Public Works Analyst
CC: Mayor McLeod
DATE: November 21, 2025
SUBJECT: Surface Water Fund — Chinook Wind Extension
Project No. 92341202 - 2025 King County Parks Open Space -River Corridors (OSRC)
ISSUE
Accept a 2025 King County Parks Open Space -River Corridors (OSRC) Grant for $1,000,000 to fund
the construction of the Chinook Wind Extension project.
BACKGROUND
In April 2025, staff applied to the King County Parks OSRC grant program to fund the construction of
the Chinook Wind Extension project. The OSRC grant program supports projects that improve the
natural function of rivers, public access, and/or awareness of river corridors as valuable natural
resources.
DISCUSSION
In July 2025, staff were notified of a $1,000,000 award. This project seeks to complete the "missing
link" public access trail between the recently completed Chinook Wind Mitigation Site and Duwamish
Gardens. This project will also create complimentary off -channel habitat that will be utilized by juvenile
Chinook, contributing to species recovery efforts.
FISCAL IMPACT
The City will receive $1,000,000 from the OSRC program. No local match is required. The City also
was awarded a $618,324 grant from the King County Flood Control District Cooperative Watershed
Management program to supplement this OSRC funding for Construction and Construction
Management. The total cost for the Chinook Wind Extension project has increased in part because the
project was separated from the larger Public Works Shops Phase 2 project. This separation requires
additional coordination with King County and other stakeholders, resulting in more staff and consultant
time during the design phase before the project can advance to construction.
Project Budget
2025 CWM Grant $ 618,324.00
King County Parks OSRC Grant $1,000,000.00
Total $1,618,324.00
Phase
Final Design & Construction
Construction & Construction Mgmt
RECOMMENDATION
Council is being asked to accept a 2025 King County Parks OSRC grant award for the Chinook Wind
Extension project in the amount of $1,000,000 and consider this item on the Consent Agenda at the
December 1, 2025 Regular Council Meeting.
Attachments: 2025-2030 CIP Page
Vicinity Map
17
CITY OF TUKWILA CAPITAL PROJECT SUMMARY
2025 to 2030
PROJECT: Chinook Wind Extension Project# 92341202
Project Manager Mike Perfetti Department Surface Water
DESCRIPTION:
JUSTIFICATION:
Following the Public Works Facility Preferred Master Ran (2019) and the Duwamish Gardens Opportunities
for Expansion Concept Plan (2013), this project will develop connecting shoreline habitat and the 'missing
trail link' between Duwamish Gardens and Chinook Wind within recently acquired City property.
This is a Tier 1 project in the WRIA 9 Salmon Recovery Plan, fulfilling a core recovery strategy of restoring,
protecting and enhancing estuary habitat in the Duwamish River. The trail connection has been discussed
in the community for many years and is anticipated to be part of larger, popular shoreline trail.
STATUS: The project is currently at 50% design,
MAINTENANCE IMPACT:
COMMENT:
FINANCIAL (in thousands)
This is a work in progress. The Green Infrastructure Program Proposal is intended, in part, to address
maintenance needs for PW-initiated habitat restoration projects and helping to alleviate pressure on Parks'
given resource constraints. Note that vegetation management maintenance needs decrease over time as
planted vegetation matures. 3 years is considered a rule of thumb for plant establishment.
This grant funded project is being implemented as part of the PW Shops Ph 2 project. There are
expectations by the granting agency that the project will be constructed. It is the middle link of the
Duwamish Gardens/Chinook Wind trail and "blue belt" aquatic restoration corridor.
2025
2026
2027
2028
2029
2030
Beyond
TOTAL
Project Costs
Project Mgmt (Staff Time/Cost)
Design
Construction Mgmt.
Construction
Contingency
$ 10
$ 50
$ 200
$ 1,000
$ 25
$ 10
$ 50
$ 200
$ 1,000
$ 25
Total Project Costs
$ 1,285
$
$ 1,285
Project Funding
Proposed Grant
Utility Revenues
$ 1,000
$ 285
$ 1,000
$ 285
Total Project Funding
$ 1,285
$ 1,285
18
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The information included on this map has been compiled by King County staff from a variety of sources and is
subject to melange without notice. King County makes no representations or warraities, express or implied,
as to accuracy, completeness, trneliness, or Opts to the use of such infoimaticn. Tiffs cbcum,ent is not intended
for use as a survey product King County shAl rot be liable for any general, special, indirect, inddental, or
consequential damages including, but nit irrited to, bst revenues or bst profit resulting from the use or misuse
cif the infonnatbn contained on this map. Any sale of ths map or inforrnaticn on this map is prohibited except by
written permissicn of Kirg County.
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Date: 3/15/2023
Notes:
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OPPORTUNITIES FOR EXPANDED HABITAT ENHANCEMENT
MAY 16, 2013
DMAMISH GARDENS