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  5. ›RFQ PWE - 11.25.2025 - On-Call Engineering Sewer Modeling…

City of Issaquah·Washington

RFQ PWE - 11.25.2025 - On-Call Engineering Sewer Modeling Services

Closes 1/9/2026$140k – $200kRequest for QualificationLogin required
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Description

The City of Issaquah is seeking on-call engineering consultants to provide technical support for stormwater modeling, hydrologic and hydraulic analysis, and environmental permitting. The selected consultant will be required to provide services including system wide sewer modeling updates, available capacity evaluations, and support in the development of new capital improvement projects. The consultant must be familiar with the City of Issaquah Stormwater Management Policy and the King County Surface Water Design Manual. • Support in system wide sewer modeling updates, calibration, and development • Provide available capacity evaluations for new developments • Support in the development of new Capital Improvement Projects • Perform system capacity analysis and identification of deficiencies • Conduct scenario modeling for various growth scenarios • Support in the development of code or standard detail updates • Provide field inspections as required • Prepare technical memos, modeling summaries, and design recommendations

Attached files

The solicitation documents live at the source — open the bid source above to download them.

Contact

Matthew Ellis(Utility Engineering Manager)

[email protected]

(425) 837-3410

Key dates

Opened
11/25/2025
Questions due
12/12/2025
Closes
1/9/2026
Projected award
2/2/2026
Duration
2 years

Last updated

Details

Type
Request for Qualification
Industry
Engineering Services
NAICS
541330
Solicitation №
PWE - 11.25.2025 Sewer

Budget estimate

$140,000 – $200,000

The available annual budget for Public Works is $49,999 and for Community Planning and Development is $20,000. Based on this information, the total budget for the selected consultant could be in the range of $70,000 to $100,000 per year, considering the contract duration of 2 years with a possible 1-year extension. The total budget for the entire contract period could be around $140,000 to $200,000.

AI estimate from the solicitation

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