This Subcontract opportunity from California was posted on August 12, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Trenching, Backfilling & Dewatering

Closed

State & Local

Submission Closed09/25/2026, 05:00:00 PM PDT

Contract Overview

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

Active Opportunities Like This One

NAICS: 238910

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Earthwork and Grading ServicesThis subcontract for Earthwork and Grading Services involves performing clearing, grubbing, and grading for prime contractors on road projects managed by the Ware County Board of Commissioners in Georgia. The selected provider will be responsible for site preparation and soil stabilization to deliver a fully graded roadbed and functional drainage paths, ensuring all work adheres to the GDOT 2025 Construction Standards. The project requires the use of heavy machinery, specifically bulldozers, graders, and excavators. Interested parties must submit their responses by December 15, 2026, at 4:30 PM. The contract falls under NAICS code 238910 and was officially posted on November 10, 2026.

Ware County Board of Commisioners

POSTED

DEADLINE

Drainage and Stormwater InstallationThis subcontract for Drainage and Stormwater Installation involves the installation of drainage systems and improvements for prime contractors working on street projects for the Ware County Board of Commissioners in Georgia. The scope of work covers a 1.61-mile project stretch and requires the delivery of a completed and tested drainage system, including the installation of culverts and drainage structures. All work must be performed in accordance with the 2021 GDOT Standard Specifications and the 2025 Construction Standards and Details. The selected contractor must provide the necessary excavation equipment and drainage piping to fulfill the project requirements. Interested parties should note that the response deadline is December 15, 2026, at 4:30 PM. This opportunity falls under NAICS code 238910 and is managed through the state of Georgia's procurement system.

Ware County Board of Commisioners

POSTED

DEADLINE

Earthwork and Site GradingThis subcontract for Earthwork and Site Grading involves providing essential site preparation services for street improvement projects managed by the Ware County Board of Commissioners in Georgia. The scope of work includes clearing, grubbing, excavation, and grading, specifically focusing on right-of-way clearing, drainage excavation, embankment construction, and final grading. All work must be executed according to GDOT specifications to ensure the site is fully prepared for subsequent paving and drainage installation. The project requires the use of heavy machinery, including excavators, bulldozers, and scrapers. Interested parties must submit their responses by December 15, 2026, in accordance with the solicitation posted on November 10, 2026. The contract falls under NAICS code 238910 and is structured as a subcontract for prime contractors operating within the region.

Ware County Board of Commisioners

POSTED

DEADLINE

Drainage and Stormwater InstallationThis subcontract for the Ware County Board of Commissioners involves the installation of drainage systems and stormwater management infrastructure for street improvement projects. The scope of work specifically requires the installation of culverts, catch basins, storm pipes, and headwalls across 0.45 miles of Gibbs Lane. All work must be performed in accordance with the 2021 GDOT Standard Specifications and 2025 Construction Standards and Details, and the contractor is required to provide their own trenching equipment and pipe lasers to deliver a fully completed and tested system. The solicitation was posted on November 10, 2026, with a response deadline of December 15, 2026. Classified under NAICS code 238910, this project is situated in Georgia and focuses on critical infrastructure improvements to ensure proper water management within the county's road network.

Ware County Board of Commisioners

POSTED

DEADLINE

Demolition and Site PreparationThis subcontract for Demolition and Site Preparation involves the removal of existing flooring materials for a restroom renovation at the Presidio La Bahia State Historic Site. The selected contractor will be responsible for removing Saltillo tile and underlying mortar beds using specialized demolition tools appropriate for historic preservation. The final deliverable is a cleared and prepped sub-floor that is ready for subsequent plumbing work and pitch corrections. The project is managed under the Texas Historical Commission and requires strict adherence to the Federal Occupational Safety and Health Act of 1970. Interested parties must note the response deadline of November 24, 2026. The work falls under NAICS code 238910, focusing on specialized demolition and site preparation within a sensitive historical context.

Texas Historical Commission

POSTED

DEADLINE

Stadium Seating Removal and DisposalThis subcontract for Stadium Seating Removal and Disposal involves providing demolition and hauling services for prime contractors working on Lamar University facility projects. The scope of work requires the dismantling of existing fixed stadium seating and the transport of all resulting debris for legal disposal. The contractor is expected to utilize professional demolition tools and waste hauling trucks to ensure that the seating areas are completely cleared and prepared for new installations. The opportunity is categorized under NAICS code 238910 and was posted on November 10, 2026. Interested parties must submit their responses by the deadline of December 9, 2026. This project is situated within the state of Texas and is managed through the Texas SmartBuy system.

POSTED

DEADLINE

Selective Demolition and Waste ManagementThis subcontract for Selective Demolition and Waste Management involves performing selective demolition services for prime contractors on facility projects managed by the Henrico County Department of General Services in Virginia. The scope of work includes demolishing specific portions of structures, salvaging materials for reuse or recycling, and ensuring all demolition waste is transported to EPA-approved landfills. The ultimate goal is to deliver a cleared work area that is fully prepared for new installations. All operations must be conducted in strict compliance with ASSE A10.6 and NFPA 241 standards. Interested parties should note that the solicitation was posted on November 10, 2026, with a response deadline of December 15, 2026. The project falls under NAICS code 238910.

POSTED

DEADLINE

Roof Tear-Off and Debris RemovalThis subcontract for the Coastal Empire Montessori Charter School involves the comprehensive removal of existing roofing materials. The scope of work includes cutting membranes, removing wall and curb flashings, and performing a full tear-off of TPO membranes and cover boards to ensure there are no code violations. The contractor is responsible for hauling all demolished scrap materials off-site and must provide prepared roof decks and disposal receipts upon completion. Strict adherence to Georgia waste disposal regulations and OSHA safety standards is required for the duration of the project. The solicitation was posted on November 10, 2026, with a response deadline of December 10, 2026. This project falls under NAICS code 238910 and is managed through the state of Georgia.

Coastal Empire Montessori Charter School

POSTED

DEADLINE

Bridge Site ExcavationThis subcontract for Bridge Site Excavation involves performing excavation and earthmoving services for prime contractors on bridge projects located in Washington County, Texas. The scope of work includes executing excavation for bridge footings, abutments, and approach work utilizing backhoes and excavators to ensure the site is delivered to the specified grade and alignment. Qualified bidders must provide experienced machine operators and maintain insurance coverage that complies with the standards set by the State Department of Highways and Public Transportation. The solicitation was posted on November 10, 2026, with a response deadline of December 3, 2026.

POSTED

DEADLINE

Site Work and Ground PreparationThis subcontract agreement with Caldwell Tanks, Inc. involves site preparation and earthwork for water tank construction projects located in Hanska, Minnesota. The selected contractor will be responsible for executing general site work, grading, and the preparation of the tank foundation area utilizing heavy earthmoving equipment to ensure the site is ready for construction. The opportunity is specifically set aside for small businesses, including SBA certified Women-Owned Small Businesses, HUBZone Small Businesses, and Disadvantaged Business Enterprises. Interested parties must respond by November 20, 2026, regarding this project categorized under NAICS code 238910.

POSTED

DEADLINE

Soil Stabilization and HardeningThis subcontract opportunity involves providing chemical or mechanical soil stabilization services for prime contractors working on California Military Department facility projects in San Luis Obispo. The scope of work requires mixing soil stabilizers to create hardened sections between buildings and retaining walls, as well as extending these sections in a 10-foot strip beyond the retained-side base face. To ensure quality and compliance, the contractor must provide a stabilization trial section for approval and undergo compaction treatment verification. The final deliverable consists of completed hardened soil sections within the designated treatment areas. Interested parties should note the response deadline of November 30, 2026.

California Military Department

POSTED

DEADLINE

K-Rail Wall Installation and GradingThis subcontract for the California Military Department involves the installation of precast concrete retaining walls and site grading at a facility in San Luis Obispo. The selected contractor will be responsible for the layout and placement of 480 total feet of retaining walls across three distinct groups, ensuring units are embedded 12 inches vertically from the finished grade. Additionally, the scope includes using grading equipment to slope soil away from buildings toward drained swales to ensure proper drainage. To be eligible for this project, contractors must hold a valid California CSLB Class A or C-12 license. The final deliverable is a fully installed wall system. Interested parties must submit their responses by November 30, 2026.

California Military Department

POSTED

about 9 hours ago

DEADLINE

in 20 days

AI Contract Overview

This subcontract opportunity with the San Francisco Bay Area Water Emergency Transportation Authority involves providing specialized trenching and water management services for electrification projects. The selected contractor will be responsible for trenching and backfilling electrical conduits and utility structures, installing sand bedding and haunching, performing dewatering, and executing saw-cuts in asphalt and concrete pavements to deliver completed utility trenches. The project is located in San Francisco, California, under NAICS code 238910. Interested parties must submit their responses by the deadline of September 26, 2026, following the posting date of August 12, 2026.

General Info

Trenching and water management subcontract for San Francisco electrification projects due September 26, 2026.

Agency

California → San Francisco Bay Area Water Emergency Transportation Authority (WETA)

NAICS

238910 - Site Preparation Contractors

Place of Performance

San Francisco, CA, 94105, USA

Set-Aside

NONE

Documents

This scope was carved out of 25-002.

The full solicitation package (3 documents), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

Treasure Island Terminal Electrification Construction Services

AI Contract Breakdown

Uniform Contract Format

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Timeline

PhaseClosed

PostedAug 12

subcontract

Response DeadlineSep 25

Deadline has passed

Submission Closed

09/25/2026, 05:00:00 PM PDT

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Organization & Contact Information

AgencyCalifornia → San Francisco Bay Area Water Emergency Transportation Authority (WETA)

ContactsNo contacts available

OfficeN/A

Organization / AgencyCalifornia → San Francisco Bay Area Water Emergency Transportation Authority (WETA)

Office AddressN/A

ContactsNo contact information available

Full Description

Performs specialized trenching and water management for prime contractors on WETA Public Works electrification projects. Trenches and backfills for electrical conduits and utility structures, installs sand bedding and haunching, performs dewatering, and saw-cuts asphalt and concrete pavements. Delivers completed utility trenches with installed bedding and final backfill.