This Government Contract opportunity from California was posted on May 20, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Biofiltration Basin Excavation

Closed

State & Local

Submission Closed06/25/2026, 10:00:00 PM UTC

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

Active Opportunities Like This One

NAICS: 238910

New

SEA S Concourse Evolution (SCE) – Bid Package 02

Solicitation # sea-s-concourse-evolution-sce-bid-package-02

Hensel Phelps, acting as the General Contractor and Construction Manager, is soliciting bids for Bid Package 2 of the S Concourse Evolution project at Seattle-Tacoma International Airport. This solicitation is set aside for Small Disadvantaged Businesses under NAICS code 238910. The scope of work is extensive and divided into eleven subsystems, including demolition and abatement, building concrete retrofit, structural steel, fire suppression, site paving, runway and taxi marking, site demolition and earthwork, deep foundations, site utilities, aviation fueling systems, and baggage handling systems. The total estimated contract value ranges from approximately 124.6 million to 143.7 million dollars. Bids must be submitted via email by September 15, 2026, using the official bid form provided in the Instructions to Bidders. The project is governed by a Project Labor Agreement and requires all subcontracts to be executed on standard Hensel Phelps forms. Key requirements for bidders include the submission of a bidders bond and the provision of 100 percent payment and performance bonds for any subcontract exceeding 100,000 dollars. Additionally, all subcontractors must provide a Workers Compensation Waiver of Subrogation. Interested parties can access bid documents through Building Connected.

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AI Contract Overview

The contract involves the excavation of a stormwater biofiltration basin in San Diego, requiring the precise removal of 1,813 cubic yards of earth with detailed grading and structural preparation to meet engineering specifications. This work is critical to ensuring proper water filtration and drainage functionality as part of a broader stormwater management initiative. The project is classified as a subcontract under NAICS code 238910, with a posting date of May 20, 2026, and a response deadline of June 25, 2026, at 10:00 PM. All work must be performed on-site in San Diego, and the contracting authority is San Diego County within the state of California. Interested parties must submit proposals through the provided online portal by the stated deadline to be considered for award.