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  5. ›26P013 ON-CALL STORMWATER MANAGEMENT ENGINEERING

City of Manassas·Virginia

26P013 ON-CALL STORMWATER MANAGEMENT ENGINEERING

Closes 5/11/2026$150k – $500kRequest for Proposal
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Description

The City of Manassas is issuing an RFP for on‑call stormwater management engineering services, including stream restoration and related professional work. The contractor will be retained to provide engineering expertise, design support, and technical assistance on an as‑needed basis for stormwater infrastructure projects throughout the city. All proposals must be submitted electronically by the deadline on May 12, 2026. This solicitation is open to qualified engineering firms with experience in municipal water resources, environmental compliance, and civil engineering design. • Provide on‑call engineering support for stormwater management and stream restoration projects. • Perform design, analysis, permitting assistance, and technical reviews as required by the City. • Maintain readiness to respond to emergency or scheduled requests throughout the contract term.

Attached files

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

Contact

Alyssa Thacker

Key dates

Opened
4/14/2026
Closes
5/11/2026

Last updated

Details

Type
Request for Proposal
Industry
Engineering Services
NAICS
541330
Solicitation №
RFP-117992

Budget estimate

$150,000 – $500,000

No explicit contract value is disclosed. Based on typical municipal on‑call engineering contracts of similar scope, a mid‑size engineering firm could expect annual fees ranging from a few hundred thousand dollars to under a million, depending on the volume of work and hourly rates. Assuming a 12‑month period with moderate call‑outs, a reasonable estimate would be roughly $150,000 to $500,000 in total billings. Factors influencing the final amount include the number of emergency events, the complexity of design tasks, and the firm’s pricing structure (hourly vs. lump‑sum).

AI estimate from the solicitation

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