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KITTITAS COUNTY
DEPARTMENT OF PUBLIC WORKS
AGENDA STAFF REPORT
AGENDA DATE: May 19, 2026
ACTION REQUESTED: Request to Approve the Resolution to Authorize Chair
Signature on Amendment No. 3 to Professional Services
Agreement with Inter-Fluve, Inc. for Lower Kittitas Reach
Floodplain Reconnection Project Restoration Engineering,
Design, and Permitting Services.
___________________________________________________________________________________
BACKGROUND: Resolution 2024-155 selected Inter-Fluve, Inc. for
restoration engineering, design, and permitting services for
the Lower Kittitas Reach Floodplain Reconnection Project
and authorized the Public Works Water Resource Manager
to negotiate and execute the professional services
agreement. During the April 27, 2026, Public Works Study
Session, staff briefed the Board of County Commissioners
on the need to implement Amendment No. 3 to
Professional Services Agreement with Inter-Fluve, Inc. and
received direction to prepare enabling documents.
INTERACTION: Public Works.
RECOMMENDATION: Approve the Resolution to Authorize Chair Signature on
Amendment No. 3 to Professional Services Agreement with
Inter-Fluve, Inc. for Lower Kittitas Reach Floodplain
Reconnection Project Restoration Engineering, Design, and
Permitting Services.
HANDLING: Return two (2) originals to Public Works.
ATTACHMENTS: Resolution and Amendment No. 3
LEAD STAFF: Arden Thomas, Water Resource Program Manager.
BOARD OF COUNTY COMMISSIONERS
COUNTY OF KITTITAS
STATE OF WASHINGTON
RESOLUTION
NO. ______________
RESOLUTION TO AUTHORIZE CHAIR SIGNATURE ON AMENDMENT NO. 3 TO
PROFESSIONAL SERVICES AGREEMENT WITH INTER-FLUVE, INC. FOR LOWER
KITTITAS REACH FLOODPLAIN RECONNECTION PROJECT RESTORATION
ENGINEERING, DESIGN, AND PERMITTING SERVICES
WHEREAS: Resolution 2024-155 selected Inter-Fluve, Inc. for restoration engineering, design, and
permitting services for the Lower Kittitas Reach Floodplain Reconnection Project and
authorized the Public Works Water Resource Manager to negotiate and execute the
professional services agreement; and
WHEREAS: Section 12 of the General Conditions of the contract authorizes modifications that are in
writing and signed by each of the parties; and
WHEREAS: Amendment No. 3 to Professional Services Agreement with Inter-Fluve, Inc. for Lower
Kittitas Reach Floodplain Reconnection Project Restoration Engineering, Design, and
Permitting Services is attached hereto and incorporated herein by this reference.
NOW, THEREFORE BE IT RESOLVED that the Board of County Commissioners finds it in the best
interest of the public to authorize Chair Signature on Amendment No. 3 to Professional Services
Agreement with Inter-Fluve, Inc. for Lower Kittitas Reach Floodplain Reconnection Project Restoration
Engineering, Design, and Permitting Services.
DATED this 19th day of May 2026, at Ellensburg, Washington.
BOARD OF COUNTY COMMISSIONERS
KITTITAS COUNTY, WASHINGTON
________________________________
Cory Wright, Chairman
Attest:
☐ Clerk of the Board- Julie Kjorsvik ________________________________
Brett Wachsmith, Vice-Chairman
☐ Deputy Clerk of the Board- Mandy Buchholz
_______________________________ ________________________________
Laura Osiadacz, Commissioner
Professional Services Agreement Amendment No. 3 – Lower Kittitas Reach Floodplain Project
Page 1
AMENDMENT NO. 3
TO
PROFESSIONAL SERVICES AGREEMENT
WITH INTER-FLUVE, INC.
FOR LOWER KITTITAS REACH FLOODPLAIN RECONNECTION PROJECT
RESTORATION ENGINEERING, DESIGN, AND PERMTTING SERVICES
The terms and provisions of the Agreement for Professional Services executed on
September 13, 2024 apply herein unless otherwise specifically revised.
Amendment to Project Scope
Inter-fluve, Inc. will assist Mid-Columbia Fisheries in the production of technical
specifications and typical drawings to support the revegetation plan development.
Amendment to Project Budget
The budget is increased by $108,415, from $875,769.10 to $984,184.10. The increased
budget includes the additional cost needed to complete the scope of the contract and shown
in the budget detail in Exhibit A ($108,335) plus an $80 discrepancy between the original
contract amount and the original budget exhibit.
Reason for Amendment:
Additional funding is needed to complete the project scope due to design refinements
necessary to ensure the project meets habitat restoration and agricultural land use
objectives. At the 60 percent design stage, revisions are needed to address site hydrology
and optimize project performance. Additionally, additional time will be needed to coordinate
with Mid-Columbia Fisheries on the revegetation component.
APPROVED:
Inter-Fluve, Inc. Kittitas County
Signature of Signatory
Date __________ Date_______________
Print Name of Signatory Print Name of Signatory
Lower Kittitas Floodplain Reconnection | Kittitas County Public Works
E S T I M A T E D H O U R S D I R E C T C O S T S
BY RESOURCE BY ITEM BY COST
Principal Technical Principal
Senior
Staff Staff Technical
Staff Admin. Support Total POV Mileage (2026
fed rate)
Per diem
(2025 fed rate)POV Mileage Per diem Supplies IFI Total Floyd-Snider NHC HRA
2026 Rates $315 $240 $220 $184 $143 $99 $0.725 $178
Task 1: Project Management, Coordination, and Meetings per hour per hour per hour per hour per hour per hour per mile per person/day
1.1 Kick-off meeting and site tour -------$ ---$ -$ -$ -$ -$ -$ -$
1.2 Recurring meetings -14 24 -12 -10,356$ ---$ -$ -$ -$ -$ -$ -$
1.3 Ongoing management, communications, and reporting -20 20 -20 12 13,248$ ---$ -$ -$ -$ -$ -$ -$
1.4 Stakeholder/Landowner engagement -5 10 -5 2 4,313$ ---$ -$ -$ -$ -$ -$ -$
SUB TOTAL - 39 54 - 37 14 - - -$ -$ -$
Task 1 IFI Estimate 27,917$ IFI Hours Total 144 IFI Labor Total 27,917$ IFI Direct Cost Total -$
Task 1 Subs Estimate -$ Subs Task Estimates -$ -$ -$
Task 1 Total Estimate 27,917$
Task 4. 60% Design
4.1 Follow-up survey -------$ ---$ -$ -$ -$ -$ -$ -$
4.2 Modeling and analysis -5 20 -6 -6,458$ ---$ -$ -$ -$ -$ -$ -$
4.3 60% Design package 2 20 20 -8 -10,974$ ---$ -$ -$ -$ -$ -$ -$
4.4 60% Design - on-site review meeting -12 12 --1 5,619$ 400 2 319$ 392$ -$ 711$ -$ -$ -$
4.5 60% Design - Technical Advisory Group meeting -3 3 ---1,380$ ---$ -$ -$ -$ -$ -$ -$
4.6 60% Design - planting plan coordination with MCFEG 4 132 -36 35,148$
SUB TOTAL 2 40 55 - 14 1 400 2 319$ 392$ -$
Task 4 IFI Estimate 60,290$ IFI Hours Total 112 IFI Labor Total 59,579$ IFI Direct Cost Total 711$
Task 4 Subs Estimate -$ Subs Task Estimates -$ -$ -$
Task 4 Total Estimate 60,290$
Task 5: Final Design
5.1 Modeling and analysis -----$ ---$ -$ -$ -$ -$ -$ -$
5.2 Draft Final Design package (aka 90%)-------$ ---$ -$ -$ -$ -$ -$ -$
5.3 Draft Final Design - Technical Advisory Group meeting -------$ ---$ -$ -$ -$ -$ -$ -$
5.4 Final Design package (100%)------$ ---$ -$ -$ -$ -$ -$ -$
5.5 Draft Final & Final Design - planting plan coordination with MCFEG 12 68 -16 20,128$
SUB TOTAL - 12 68 - 16 - - - -$ -$ -$
Task 5 IFI Estimate 20,128$ IFI Hours Total 96 IFI Labor Total 20,128$ IFI Direct Cost Total -$
Task 5 Subs Estimate -$ Subs Task Estimates -$ -$ -$
Task 5 Total Estimate 20,128$
TOTAL IFI ESTIMATE 108,335$ IFI LABOR TOTAL 107,624$ IFI DIRECT COST TOTAL 711$
TOTAL SUBS ESTIMATE -$ SUBS ESTIMATE TOTALS (incl 10% markup)-$ -$ -$
TOTAL ESTIMATE 108,335$
60% Design through Final Designs - Amendment
SubcontractorsOffices Nationwide
501 Portway Avenue, Suite 101, Hood River, Oregon 97031
541.386.9003 www.interfluve.com