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August 2023



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CLOSED-On-Call Engineering Services; SPU RFP/Contract# 23-097-S

Original Date Posted: August 9, 2023 8:00 am

Due Date:

2:00 PM Pacific Time on 9/6/2023

Request for Proposals (RFP) for
On-Call Engineering Services
SPU RFP/Contract# 23-097-S

Seattle Public Utilities (SPU) is requesting proposals from qualified consultants to support and supplement the work of the SPU Capital Improvement Project (CIP) Design Section (CIP Design) in providing engineering services for project delivery and project support across the Drainage and Wastewater Line of Business, Water Line of Business, and Solid Waste Line of Business. The consultant team will assist CIP Design in meeting work demands by supplementing technical skill sets and/or provide capacity for in-house design work. 

SPU will procure one or more On-Call Contracts for consultant teams to provide engineering design support primarily for options analysis, design, and construction. The combined total estimated contract amount will be $4.5 million for all work assigned under this contract.

Conract(s) will be a multi-year On-Call; a specific delivery schedule is not known at this time. Work Assignments will be developed over the course of the contract(s) with varying dates for milestones and deliverables depending on the scope. Contract(s) will be executed for a period of two (2) years, with the option to extend it up to an additional three (3) years.

Interested consultants are encouraged to review the solicitation, background documents, and any addenda online at

The deadline for submitting responses is 2:00 PM Pacific Time on 9/6/2023, electronically uploaded to the City’s Procurement Portal:

SPU PRE-SUBMITTAL CONFERENCE:  An optional pre-submittal conference will be held on 8/17/2023 from 11:00 AM to 12:00 PM Pacific Time, via Teams Meeting ID: 267 309 716 871, Meeting Passcode: tUH4s2 at URL:

Or join by phone at: +1-206-686-8357; Phone Conference ID: 736 304 707#. 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.

Proposers may submit questions to the procurement portal (Bonfire) under the Vendor Discussions section. The City strongly prefers that consultants submit questions in Bonfire but will accept questions submitted to the Contract Administrator in email format, as well. Questions 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 5:00 PM Pacific Time on 8/21/2023. All responses to questions will be posted at under the Public Notices Section in the respective procurement opportunity.

Consultant selection for this solicitation will be subject to all applicable laws and ordinances. The participation of women- and minority-owned firms is a high priority cultural value of the City of Seattle and is strongly encouraged at all tiers.

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