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City of Seattle·Washington

OC Environmental Monitoring and Consulting Services

Closes 10/21/2026$1.5M – $2.5MRequest for Proposal
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Description

The City of Seattle, through Seattle Public Utilities, is issuing a five‑year on‑call contract for environmental monitoring and consulting services. The contract does not guarantee a minimum workload; individual work assignments will be issued as needed for projects such as stormwater BMP evaluation, urban ecosystem restoration, NPDES permit support, and infrastructure performance assessments. The scope includes review of design documents, development of QA/QC plans, field collection of biological, physical, and chemical samples, data analysis, reporting, and asset‑management support. Contractors must be able to coordinate with state and federal regulators, provide inclusion plans for women‑ and minority‑owned businesses, and possess the capability to deploy and maintain monitoring equipment. The estimated contract value is $2 million over five years, with work defined on a task‑by‑task basis. • On‑call, five‑year term (≈$2 M total) with no minimum work guarantee • Broad environmental services: site characterization, QAPP/SAP development, sampling, data QA/QC, reporting, and asset‑management support • Applicable to stormwater BMPs, watershed restoration, NPDES Phase 1 compliance, and infrastructure performance studies • Required coordination with Washington State Dept. of Ecology and other regulators • Inclusion of Women‑ and Minority‑Owned Business Enterprise (WMBE) plan and adherence to City equity policies • Submissions electronic via OpenGov portal; pre‑submittal conference optional (Oct 6, 2026)

Attached files

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

Contact

Lisa Hill(Strategic Advisor)

[email protected]

(206) 572-5524

Key dates

Opened
9/29/2026
Questions due
10/9/2026
Pre-bid meeting
10/6/2026
Closes
10/21/2026
Projected award
11/30/2026
Duration
5 years

Last updated

Details

Type
Request for Proposal
Industry
Consulting Services
NAICS
541620
Solicitation №
26-136-S

Budget estimate

$1,500,000 – $2,500,000

The solicitation estimates a total contract value of $2 million over the five‑year term, which translates to roughly $400 k per year. Considering typical overhead, profit margins, and potential variability in work volume, a realistic earnings range for a qualified consultant would be between $1.5 million and $2.5 million over the life of the contract. The lower bound assumes minimal task awards and modest rates; the upper bound assumes a full utilization of the on‑call capacity with higher‑complexity assignments and premium rates.

AI estimate from the solicitation

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