HomeMy WebLinkAboutTIC 2020-04-06 Item 2D - Grant Application - Nelsen Side ChannelCity of Tukwila
Public Works Department - Henry Hash, Director
INFORMATIONAL MEMORANDUM
TO: Transportation and Infrastructure Committee
FROM: Henry Hash, Public Works Director
BY: Mike Perfetti, Habitat Project Manager
CC: Mayor Ekberg
DATE: April 3, 2020
SUBJECT: Nelsen Side Channel
Project No. 91641203
Grant Applications
Allan Ekberg, Mayor
ISSUE
Authorize the submittal of a grant application to the Washington State Department of Ecology's
(DOE) Floodplains by Design (FbD) grant program and other future grant opportunities to fund the
Nelsen Side Channel project.
BACKGROUND
The Nelsen Side Channel is a remnant section of the Green River as it existed prior to the
construction of 1-405 in the 1960s. The remnant channel is separated from the mainstem of the
river by a constructed levee but offers potential for an off -channel rearing habitat for threatened
Puget Sound Chinook salmon and Steelhead. Rearing habitat in the lower Green River and
Duwamish River is limited, forcing fry migrants into Puget Sound much too early. Recent research
by the Washington Department of Fish and Wildlife (WDFW) shows that less than 1 % of fry forced
out into Puget Sound return as adults, the lowest of inventoried Puget Sound rivers. The Nelsen
Side Channel project will set the levee back to create a ±1.2-acre side channel, restore an acre of
riparian forest, provide additional flood storage, and provide public access to the shore.
DISCUSSION
DOE is currently seeking applications for its 2021-2023 FbD Program. Staff submitted a pre -
application to obtain design funding and was invited to submit a grant application. City policy
requires approval by the appropriate Committee before applying for grants.
FISCAL IMPACT
There is no specified limit for requesting funding, and the City meets the Disadvantaged
Community Criteria, thus waiving match requirements.
RECOMMENDATION
Committee approval to submit for the FbD Program grant and other grant opportunities that may
become available for the Nelsen Side Channel project.
Attachments: Page 98, 2019 CIP
https //tukwilawa sharepoint.com/sites/publicworks/engineering/PW Drop Box/01 TIC Agenda/TIC 04-06-2020/d. Nelsen Side Channel/Info Memo Nelsen Side Channel grant app_20200403 docx 29
CITY OF TUKWILA CAPITAL PROJECT SUMMARY
2019 to 2024
PROJECT:
Nelsen Salmon Habitat Side Channel Project No. 91641203
Create an off -channel salmon rearing habitat side channel by connecting a segment of historic river
DESCRIPTION:
channel with the Green River.
JUSTIFICATION:
WRIA 9 has identified this project a proposed action in the Salmon Habitat Plan.
The project area is primarily within State lands. The project will involve adjacent properties, and the need
STATUS:
for flood protection will need to be analyzed. The Project scope and project area, including any potential
property acquisition, needs to be defined and a feasibility study performed.
MAINT. IMPACT:
Expected to increase maintenance
Property acquisition to the north could create the opportunity for a side channel and additional flood storage.
COMMENT:
Grant funding proposed from King County Flood Control District and State.
FINANCIAL
Through Estimated
(in $000's)
2017 2018 2019 2020 2021 2022 2023 2024 BEYOND TOTAL
EXPENSES
Design
50
200
250
Land (R/W)
0
Monitoring
15
15
15
45
Const. Mgmt.
100
100
200
Construction
500
500
1,000
TOTAL EXPENSES
1 01
01
50
1 200
1 600
1 600
1 151
151
151
1,495
FUND SOURCES
Awarded Grant
0
Proposed Grant
150
500
500
1,150
Mitigation Actual
0
Mitigation Expected
0
City Oper. Revenue
0
0
50
50
100
100
15
15
15
345
TOTAL SOURCES
1 01
01
50
1 200
1 600
1 600
1 151
15
151
1,495
;D Project Location
8,
9
2019 - 2024 Capital Improvement Program
W
30