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November 2022



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CLOSED-On-Call Modeling & Analysis Support; SPU RFQ/Contract# 22-236-S

Original Date Posted: November 17, 2022 7:30 am

Due Date:

2:00 PM Pacific Time on Thursday, December 15, 2022

Request for Qualifications (RFQ) for

On-Call Modeling & Analysis Support
SPU RFQ/Contract# 22-236-S

Seattle Public Utilities (SPU) is requesting qualifications from qualified consultant teams to provide On-Call Modeling and Analysis support for all drainage, wastewater, and combined systems. Services may include system network modeling, drainage, and wastewater basin modeling, CSO compliance modeling, Digital Model development, problem identification, survey, mapping, precipitation statistical analysis, field reconnaissance, model review and analysis, long-term model simulations, calibration, validation, conversion and gathering of anecdotal information. Development of and updates to custom software tools used by SPU to support modeling activities, complex optimization modeling and analyses, and green stormwater infrastructure (GSI) evaluations.

Additional services may include support for programmatic planning and identification of flow monitoring locations but will not provide for the installation or purchase of monitoring equipment, data collection, evaluation, and QA/QC of the data; this will be completed under a separate contract.

The Contract will be executed for a period of three (3) years, with the option to extend up to an additional two (2) years. Work assignments will be developed iteratively over the course of the contract with varying dates for milestones and deliverables depending on the scope. The total of all Work Assignments under the Contract is estimated to be in the range of $4,000,000 to $5,500,000. SPU does not guarantee a specific volume of work under the Contract.

Interested consultants are encouraged to review the RFQ/P, background documents, and any RFQ/P addenda online at You must log in to register for Bid Events and to view Bid Question and Response information.

The deadline for submitting Qualifications/Proposals is 2:00 PM Pacific Time on Thursday, December 15, 2022, electronic only via e-mail to

SPU PRE-SUBMITTAL CONFERENCE:  An optional pre-submittal conference will be held on Thursday, December 1, 2022 from 11:00 AM to 12:00 PM Pacific Time, via Teams Meeting ID: 229 147 810 577, Meeting Passcode: gCmRTD at URL:

Or join by phone at the following: +1-206-686-8357; Phone Conference ID: 907 756 951#. SPU will review the scope of work, consultant expectations, and answer questions from the prospective bidders. Although attendance at this meeting is not mandatory, attendance is highly encouraged.

Written questions related to this RFQ/P are encouraged and shall be directed to Sherry Shaffer, Contract Administrator & SPU’s designated contact person, at To facilitate preparation of responses to questions, please submit questions by no later than 3:00 PM Pacific Time on Monday, December 5, 2022. All responses to questions will be posted at

The City of Seattle is an Equal Opportunity Employer and selection of the Consultant is subject to applicable laws and ordinances regarding equal opportunity employment.

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