This Subcontract opportunity from California was posted on September 25, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Concrete Containment Trench and Demolition

Closed

State & Local

Submission Closed10/15/2026, 02:00:00 PM PDT

Contract Overview

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

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NAICS: 238110

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26_1119 – Robbinsdale-MN

Solicitation # 261119-robbinsdale-mn

Caldwell Tanks, Inc. is seeking subcontractors for a water tank construction project located in Robbinsdale, Minnesota. The solicitation covers several specialized scopes of work, including site work under NAICS 238910, tank painting under NAICS 238320, and electrical work under NAICS 238210. Interested parties must submit their responses by November 17, 2026. The project emphasizes Disadvantaged Business Enterprise participation, with target goals set at 3.5 percent for Minority Business Enterprises and 5.0 percent for Women Business Enterprises. Primary inquiries should be directed to Kendal Eckert.

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DEADLINE

Solicitation # 261123-hanska-mn

Caldwell Tanks, Inc. is seeking subcontracting partners for the construction of a water tank project located in Hanska, Minnesota. The solicitation targets specialized services across three primary areas: site work under NAICS 238910, tank painting under NAICS 238320, and electrical work under NAICS 238210. The overall project falls under the primary NAICS code 238110. This opportunity is designated as a set-aside for small businesses, specifically including SBA certified Women-Owned Small Businesses, HUBZone Small Businesses, and Department of Transportation Disadvantaged Business Enterprises. Interested parties must respond by November 20, 2026. As a covered federal contractor, Caldwell Tanks, Inc. maintains compliance with affirmative action requirements for protected veterans and individuals with disabilities. Primary coordination for this solicitation is managed by Kendal Eckert.

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External Building Fabric and Facade Repair

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Cast-in-Place Concrete Work

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Concrete Foundation and Site PreparationThis subcontract, titled Concrete Foundation and Site Preparation, involves the procurement, supply, and installation of a concrete pad for prime contractors supporting USAF projects at RAF Fairford in the United Kingdom. The scope of work includes conducting essential site verifications and infrastructure surveys to ensure the concrete pad is poured with the correct grade and alignment for the intended structures. The project requires strict adherence to UK regulations and established codes of practice to deliver a fully completed and leveled concrete pad. Managed by the Department of Defense under the FA5570 501 Csw Rco agency, the opportunity was posted on November 13, 2026, with a response deadline of December 13, 2026.

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Cast-in-Place Concrete Footings and Walls InstallationThis subcontract for Cast-in-Place Concrete Footings and Walls Installation involves the construction of a complete concrete foundation for a 45ft x 56ft metal hoop structure on Town of Preston Public Works projects. The selected contractor is responsible for the entire process, including layout, formwork installation, concrete placement, consolidation, and finishing to deliver a fully cured foundation. Managed by DAS Procurement for the state of Connecticut, the project requires strict adherence to Connecticut prevailing wage laws. Interested parties must submit their responses by the deadline of December 8, 2026, at 4:00 PM.

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Concrete & Masonry ConstructionThis subcontract for Concrete and Masonry Construction involves the construction of building shells and foundations for prime contractors on W2SD Endist Europe projects located in Maun, Botswana. The scope of work includes the installation of slab-on-grade foundations, reinforced concrete structures, masonry infill walls, and a one-meter concrete apron around the perimeter of the buildings to deliver a completed reinforced concrete and masonry shell. Managed under the Department of Defense, the project is categorized under NAICS code 238110. The solicitation was posted on November 13, 2026, with a response deadline set for November 23, 2026.

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Irrigation Canal Lining Maintenance and Repair for

Solicitation # 140A1127R0016

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Preston Public Works Salt Shed Foundation

Solicitation # 39899

The Town of Preston is soliciting bids for a lump sum contract to provide all labor, materials, equipment, and supervision necessary to install a complete concrete foundation, including cast-in-place footings and walls, for a new 45ft x 56ft metal hoop structure used for road sand and salt storage. The project is located at the Department of Public Works at 389 Route 2, Preston, CT. The contractor is responsible for obtaining the required building permit from the Town and providing submittals for concrete, reinforcing steel, and leveling plates and anchor bolts. Performance begins upon receipt of a notice to proceed, with substantial completion required by April 15, 2027. Unexcused late completion is subject to liquidated damages of $250.00 per calendar day. The contract will be awarded to the lowest responsive and responsible bidder. Bidders must submit one original and one copy of their bid in a sealed envelope to the office of the First Selectman. Required documentation includes a lump sum price bid and completed Federal Certifications. Because the project is federally funded, the contractor must comply with the Clean Air Act, the Federal Water Pollution Control Act, and the Contract Work Hours and Safety Standards Act. Additionally, the contractor must adhere to Connecticut prevailing wage laws and provide 100% performance and payment bonds, as well as necessary insurance certificates. A one-year warranty period applies after substantial completion for the correction of any defective work at no additional cost to the Town.

DAS Procurement

POSTED

about 10 hours ago

DEADLINE

in 25 days

AI Contract Overview

This subcontract for the Irvine Ranch Water District involves demolition and concrete construction services at the Baker Water Treatment Plant in Lake Forest, California. The selected contractor will be responsible for the demolition and removal of existing floor slabs, walls, and cast-in-place piping, followed by the trenching and installation of a new reinforced concrete containment trench in accordance with Project Technical Specifications Sections 2-17. Eligible bidders must hold a valid California State Contractor's License, specifically a C-12 or General Engineering license. The project is categorized under NAICS code 238110, with a response deadline set for October 15, 2026. The final deliverable for this contract is a fully completed containment trench.

General Info

Demolition and concrete containment trench construction at Baker Water Treatment Plant by October 2026.

Agency

California → Irvine Ranch Water District

NAICS

238110 - Poured Concrete Foundation and Structure Contractors

Place of Performance

Lake Forest, CA, 92630, USA

Set-Aside

NONE

Documents

This scope was carved out of 13200.

The full solicitation package (5 documents), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

Baker Water Treatment Plant CIP Piping Replacement

AI Contract Breakdown

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Timeline

PhaseClosed

PostedSep 25

subcontract

Response DeadlineOct 15

Deadline has passed

Submission Closed

10/15/2026, 02:00:00 PM PDT

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Organization & Contact Information

AgencyCalifornia → Irvine Ranch Water District

ContactsNo contacts available

OfficeN/A

Organization / AgencyCalifornia → Irvine Ranch Water District

Office AddressN/A

ContactsNo contact information available

Full Description

Performs demolition and concrete construction for prime contractors on Local Water District facility projects at the Baker Water Treatment Plant. Demolishes and removes existing floor slabs, walls, and CIP piping. Trenches and installs a new CIP concrete containment trench with reinforcement per Project Technical Specifications (Sections 2-17). Requires California State Contractor's License (C-12 or General Engineering). Delivers a completed containment trench.