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Underwater Installation of Stilling Wells and Sonde Housing

Active

State & Local

Contract Overview

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

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The contract entails the underwater installation of high-density polyethylene stilling wells from concrete cantilever platforms and via barge, specifically designed for riverine environments. This work includes precise underwater anchoring and alignment procedures to ensure structural stability and proper function in dynamic water conditions. The installation must accommodate challenging subsurface and hydrological factors, requiring specialized equipment and expertise in submerged construction techniques. The project is classified under NAICS code 238990 for other specialty trade contractors and is structured as a subcontract with the Contra Costa Water District in California. Work will be performed in an unspecified riverine location within the state, with no defined city or zip code. The solicitation was posted on June 12, 2026, and the project can be referenced through the provided California CEQA Net link. All aspects of the installation must meet stringent engineering and environmental standards to ensure long-term performance and regulatory compliance.

General Info

Underwater installation of HDPE stilling wells from cantilever platforms and barges in California riverine environments.

Agency

California → Contra Costa Water District

NAICS

238990 - All Other Specialty Trade Contractors

Place of Performance

CA

Set-Aside

NONE

Documents

This scope was carved out of Old and Middle River Pump Stations Water Quality Monitoring Instrumentation Improvements Project.

The full solicitation package (2 documents), including the RFP, is on the prime solicitation, not on this scope.

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Timeline

PostedJun 12

subcontract

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Organization & Contact Information

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AgencyCalifornia → Contra Costa Water District

ContactsNo contacts available

OfficeN/A

Organization / Agency

California → Contra Costa Water District

Office AddressN/A

ContactsNo contact information available

Full Description

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Installation of HDPE stilling wells from concrete cantilever platforms and via barge, including underwater anchoring and alignment in riverine environments.

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