This Government Contract opportunity from California was posted on September 5, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Trenching and Backfilling

Closed

State & Local

Submission Closed10/08/2026, 09:00:00 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: 237990

New

ALTA, RIVERVIEW, AND KINGS CANYON HIGH WELL DRILLING PHASE

Solicitation # alta-riverview-kings-canyon-high-well-drilling-phase

The Alta, Riverview, and Kings Canyon High Well Drilling Phase is a solicitation issued for Project No. 1000316-001C, owned by the Kings Canyon Unified School District. The project involves well drilling operations located across Reedley, Parlier, Dinuba, and Fresno, California. This opportunity is categorized under NAICS code 237990 and is managed through Anthony J. Prieto Water Well Drilling, Inc. This contract is designated as an SBA set-aside, making it available to various small business categories, including Veteran Owned, Service-Disabled Veteran Owned, Women-Owned, and HUBZone Small Businesses. The solicitation was posted on October 28, 2026, with a response deadline of November 10, 2026. Interested parties may contact Jennah Castagna for further information regarding the submission process.

Anthony J. Prieto Water Well Drilling, Inc.

POSTED

DEADLINE

Construction of The Recharge Master Plan Update (RMPU) Basin Improvements Project - Montclair Basin Improvements

Solicitation # construction-recharge-master-plan-update-rmpu-basin-improvements-project-montclair-basin-0

The Recharge Master Plan Update Basin Improvements Project involves the construction of two drop inlet diversion structures across the 25-foot-wide concrete San Antonio Creek Channel in Montclair, California. The scope of work includes excavating 8 to 10 feet below the channel floor, installing steel debris grates, and fitting wall-mounted steel gates on the east sides of the structures. Additionally, the project requires the installation of 4-foot-diameter discharge pipelines leading to Montclair Basins 2 and 3, which will be covered by 3 feet of soil and terminate in concrete outlet structures designed for flow dissipation. The project also encompasses the delivery of complete electrical, instrumentation, and SCADA integration to manage gate actuation, with programming limited to Technical Systems, Inc. or E Technologies Group. This solicitation, issued by Granite Construction Company under NAICS code 237990, is open for responses until November 5, 2026. Interested parties should coordinate with the primary point of contact, Andrew Burk, regarding this infrastructure improvement effort.

Granite Construction Company

POSTED

DEADLINE

ARWA Carrizo System Expansion: Well Drilling

Solicitation # arwa-carrizo-system-expansion-well-drilling

The Alliance Regional Water Authority is seeking bids for the Carrizo System Expansion project focusing on well drilling services located in Rosanky, Texas. This solicitation, identified as ARWA IFB Number 2026-001, is managed by Hydro Resources - Mid Continent, Inc. and falls under NAICS code 237990. The opportunity is specifically set aside for Small Businesses and Disadvantaged Business Enterprises. Interested parties must submit their responses by the deadline of November 3, 2026. Primary coordination for this contract is handled by Amy Majors, who serves as the point of contact for the procurement process.

Hydro Resources - Mid Continent, Inc.

POSTED

DEADLINE

Construction of The Recharge Master Plan Update (RMPU) Basin Improvements Project - Montclair Basin Improvements

Solicitation # construction-recharge-master-plan-update-rmpu-basin-improvements-project-montclair-basin

Empire Equipment Service, Inc. is soliciting quotes from certified DBE and DVBE subcontractors and suppliers for the Montclair Basins 2 and 3 Diversion Improvements project. This work is part of the Recharge Master Plan Update Basin Improvements Project located at the San Antonio Creek Channel in Montclair, California, performed for the Inland Empire Utilities Agency. The opportunity is designated for various small business set-asides, including Veteran Owned, Service-Disabled Veteran Owned, Women-Owned, and HUBZone certified businesses. Interested parties must submit their responses by November 5, 2026. Primary inquiries and quotes should be directed to Gio Marquez via the provided estimating email or phone contact.

Empire Equipment Service, Inc.

POSTED

DEADLINE

Site Compliance and Improvements - Patton Landing

Solicitation # site-compliance-improvements-patton-landing

The State of California Department of General Services Real Estate Services Division is seeking bids for the Site Compliance and Improvements project at Patton Landing, located in Carnelian Bay, Placer County, California. Identified by Project Number 13891 and Event ID 0000040533, this solicitation focuses on site compliance and infrastructure enhancements under NAICS code 237990. This opportunity is specifically set aside for SBA certified Service-Disabled Veteran Owned Small Businesses and Disadvantaged Business Enterprises. Interested parties must submit their responses by the deadline of November 10, 2026. Primary coordination for this project is managed through Nayvi Waite at Resource Development Company LLC.

Resource Development Company LLC

POSTED

DEADLINE

Structural Repair at NCMT Berths 24-3 and 24-4, CA

Solicitation # structural-repair-ncmt-berths-24-3-24-4-ca

This solicitation, issued by Griffith Company, concerns structural repair work at NCMT Berths 24-3 and 24-4 located in California. The scope of work involves the demolition and removal of existing concrete decks, pile caps, and appurtenances, followed by the construction of a new reinforced concrete deck. Additionally, the project requires the repair of existing piles, the installation of pile jackets, and the replacement of various waterfront elements, including bull rails, wale systems, fenders, and mooring hardware such as bollards. The opportunity is set aside for small businesses under NAICS code 237990. Interested parties must submit their responses by the deadline of November 4, 2026. For further inquiries, the primary point of contact is Savana Powell.

POSTED

DEADLINE

ADVANCE NOTICE: Rail Modernization Program

Solicitation # WMATA-0000010871

The Washington Metropolitan Area Transit Authority has issued an advance notice for the Rail Modernization Program under solicitation number WMATA-0000010871. This solicitation is categorized under NAICS code 237990, which pertains to other heavy and civil engineering construction. The notice was posted on October 28, 2026, and the deadline for responses is set for September 30, 2027. Interested parties can find further details and manage bids through the official WMATA supplier portal.

Washington Metropolitan Area Transit Authority

POSTED

DEADLINE

San Vicente and Mt. Olivette Reservoir Improvements Project - Construction

Solicitation # SP2797-CT

The San Vicente and Mt. Olivette Reservoir Improvements Project (SP2797-CT) is a construction solicitation issued by the City of Santa Monica's Public Works Engineering Division. The project involves addressing civil, mechanical, structural, and electrical deficiencies for four water reservoirs located at the Mt. Olivette Reservoir and the San Vicente Reservoir. With a project estimate of $27,344,000, the work requires a contractor holding a Class A General Engineering license. The estimated contract duration is 730 calendar days, although some contract documents reference a term of 520 days from the notice to proceed. Liquidated damages for delays are set at $13,200 per day. Bids must be submitted electronically via the OpenGov Procurement portal, with a final deadline of October 29, 2026, at 3:00 PM PT. Submission requirements include a bid guarantee of at least 10 percent of the bid amount and certification of a mandatory pre-bid job walk. Awarded contractors must provide Labor and Material Payment and Performance Bonds for 100 percent of the contract sum. The scope of work includes strict adherence to local noise ordinances, prevailing wage requirements, and technical specifications for potable water materials and electrical labeling. Performance is subject to inspection by the City and its designated engineers at both the project site and the place of manufacture.

D500 PUBLIC WORKS - ENGINEERING DIVISION

POSTED

DEADLINE

CP1248808-Lake LaVerne-Improvements-Bridge and Amphitheater

Solicitation # 49337

Iowa State University is soliciting bids for the Lake LaVerne Improvements Bridge and Amphitheater project, identified by solicitation number 49337. This construction effort focuses on site enhancements including the installation of a 10 foot wide PCC pedestrian path, PCC sidewalks, and site lighting. Additionally, the scope of work encompasses the creation of outdoor amphitheater seating using limestone blocks, as well as comprehensive lakebed and shoreline grading and restoration. The solicitation was posted on October 27, 2026, with a response deadline set for November 3, 2026. Classified under NAICS code 237990, the project will be performed in Iowa. Interested parties can find further details and submission guidelines through the provided Bid Express link.

Iowa State University

POSTED

DEADLINE

Microtunneling and Trenchless Sewer Installation

Baltimore County Government

POSTED

DEADLINE

Solicitation # FDC-214-102565

Project FDC-214-102565.1 involves the demolition of an existing concrete dam and associated infrastructure at Ryerson Station State Park in Richhill Township, Greene County, Pennsylvania. Managed by the Pennsylvania Department of Conservation and Natural Resources, the scope of work encompasses site preparation, including the installation and removal of erosion and sediment control measures and the implementation of a traffic control plan. Technical requirements include stripping and stockpiling topsoil, surface water control, dewatering subgrades, excavation, and the placement of select fill. The project concludes with site restoration, including topsoil application and seeding in all disturbed areas. All work must adhere to specific ASTM International standards for soil analysis and compaction, and the contractor is required to provide a complete set of as-built drawings upon completion. The contract will be awarded to the lowest responsible and responsive bidder, with an engineer's estimate exceeding 1 million dollars. Bidders must meet mandatory participation goals of 19 percent for Small Disadvantaged Businesses and 3 percent for Veteran Business Enterprises. Required securities include a bid guaranty, a 100 percent performance bond, a 100 percent material and labor payment bond, and a 50 percent maintenance bond. Contractors must comply with extensive Pennsylvania state labor laws, including the Prevailing Wage Act and the Construction Workplace Misclassification Act. Payments are processed via Automated Clearing House, and the contractor is responsible for engaging an independent testing laboratory for quality control services, subject to oversight by the Department's quality assurance program.

Commonwealth of Pennsylvania - Department of Conservation and Natural Resources

POSTED

DEADLINE

Capital Project No. 3508

Solicitation # 49696

The City of Lake Charles, Louisiana, is soliciting bids for Capital Project No. 3508, focused on the first phase of shoreline protection at Riverside Park. The project involves the restoration and stabilization of approximately 250 linear feet of shoreline near the park entrance. Key construction activities include the placement of stone revetment to rebuild the riverbank and the installation of roughly 100 linear feet of steel sheet piling to protect the bank near the gate entrance. Additionally, the contractor will be responsible for repairing or replacing decorative black fencing that has been damaged by erosion. This solicitation, identified by number 49696, falls under NAICS code 237990. Interested parties must submit their responses by the deadline of November 17, 2026. The project is managed by the City of Lake Charles and will be performed within the state of Louisiana.

City of Lake Charles

POSTED

about 16 hours ago

DEADLINE

in 20 days

AI Contract Overview

This subcontract for the County of Orange OC Waste and Recycling involves specialized excavation and backfilling services for utility lines in San Juan Capistrano. The scope of work includes trenching for HDPE header piping, installing compacted utility bedding, and backfilling dual containment areas. A critical component of the project is the requirement to conduct air monitoring following the backfill process to ensure there are no surface emissions, delivering trenches with verified air-tight seals. The opportunity is categorized under NAICS code 237990 and was posted on September 5, 2026. Interested parties must submit their responses by the deadline of October 8, 2026. This contract is designed for a subcontractor to support prime contractors in executing these technical utility requirements for the agency.

General Info

Excavation and backfilling for utility lines in San Juan Capistrano, deadline October 8, 2026.

Agency

California → County of Orange, OC Waste & Recycling

NAICS

237990 - Other Heavy and Civil Engineering Construction

Place of Performance

San Juan Capistrano, CA, 92675, USA

Set-Aside

NONE

Documents

This scope was carved out of 299-3104108-AR.

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

View the prime solicitation

Prima Zone 4 Phase A Main Gas Line Project

AI Contract Breakdown

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Timeline

PhaseClosed

PostedSep 5

subcontract

Response DeadlineOct 8

Deadline has passed

Submission Closed

10/08/2026, 09:00:00 PM UTC

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Organization & Contact Information

AgencyCalifornia → County of Orange, OC Waste & Recycling

ContactsNo contacts available

OfficeN/A

Organization / AgencyCalifornia → County of Orange, OC Waste & Recycling

Office AddressN/A

ContactsNo contact information available

Full Description

Performs excavation and backfilling for utility lines for prime contractors on County of Orange OC Waste & Recycling projects. Trenches for HDPE header piping, installs compacted utility bedding, and backfills dual containment areas. Conducts air monitoring after backfill to confirm lack of surface emissions. Delivers completed trenches with verified backfill and air-tight seals.