This Government Contract opportunity from Department Of The Interior was posted on August 14, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Radiocarbon and Stable Isotope Analysis

Closed

Federal

Submission Closed08/25/2026, 12:00:00 AM UTC

Contract Overview

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

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NAICS: 541380

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Transient Condition & Pressure TestingThis subcontract opportunity, titled Transient Condition and Pressure Testing, is issued by Garney Companies, Inc. for specialized testing services on Charles County Government projects. The selected contractor will be responsible for performing pressure and transient testing for prime contractors, specifically focusing on pump shutdowns and monitoring pressure at the flowmeter vault to ensure levels remain above 15 psig. The final deliverable for this engagement is a comprehensive testing and commissioning report that verifies transient stability. This opportunity is specifically set aside for SBA certified Women-Owned Small Businesses and Disadvantaged Business Enterprises under NAICS code 541380. Interested parties must submit their responses by the deadline of November 9, 2026.

Garney Companies, Inc.

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DEADLINE

Fire Flow Testing and Hydrant/Valve Inspection ServicesThis subcontract for Fire Flow Testing and Hydrant/Valve Inspection Services involves performing hydraulic testing of fire hydrants and inspections of water distribution valves for prime contractors on WSSC Water projects. The scope of work includes conducting fire flow tests for static and residual pressure, operating valves, and utilizing MDE-compliant dechlorination methods. The selected provider must utilize Pitot gauges and hydraulic testing tools and is responsible for delivering all completed tests and inspection reports. A critical qualification for this engagement is that at least one crew member must possess a Maryland Water Distribution (WD) Operator D-1 license. The opportunity is managed by the Utility Services Department in Maryland under NAICS code 541380, with a response deadline set for November 30, 2026.

Utility Services Department

POSTED

DEADLINE

Fire Flow Testing Services

Solicitation # 121589

WSSC Water is soliciting bids for Fire Flow Testing Services to support the planning, locating, inspection, and testing of approximately 46,000 fire hydrants and associated water distribution components across various pressure zones in Maryland. The scope of work includes performing fire flow tests, hydrant and valve inspections, managing water shutdowns, and implementing traffic control for residential, county, and state roads. The contract is structured with a one-year base term and four optional one-year extensions. Award will be made to a single, responsive, and responsible bidder based on the lowest total price, provided they meet strict minimum qualifications, including five years of prime experience in fire flow testing, the ability to deploy at least two simultaneous crews, and the employment of at least one crew member with a Maryland Water Distribution System Operator D-1 license. Bidders must submit a comprehensive set of documentation via the eProcurement portal by November 30, 2026, including a safety and health program questionnaire, a certificate of insurance, and various certifications regarding non-discrimination and Iran investment activity. Technical requirements include the submission of a detailed QA/QC plan and an equipment list featuring specialized tools like Pitot gauges and dechlorination equipment. The contract emphasizes compliance with AWWA and MDE standards, specifically regarding the discharge of chlorinated water. Notably, the agreement excludes the COVID-19 pandemic from Force Majeure claims and requires strict adherence to security background investigations for accessing sensitive facility plans. Payment is processed via ACH or procurement credit card within 30 days of accepted delivery, with a potential award factor based on prompt payment discounts.

Utility Services Department

POSTED

DEADLINE

Construction Aggregate TestingThis subcontract for Construction Aggregate Testing, managed by the California Department of General Services, involves providing specialized testing services for aggregates used in roads, curbs, walkways, and paving on CALFIRE facility projects. The selected contractor will be responsible for performing sampling and laboratory testing, utilizing laboratory scales and sieve analysis equipment to ensure all materials align with project design documents. The primary deliverable for this engagement is the provision of detailed aggregate quality and gradation reports. The project is located in San Diego and falls under NAICS code 541380. Interested parties must submit their responses by the deadline of November 24, 2026. This opportunity is designed to support prime contractors in maintaining quality control and regulatory compliance for critical infrastructure improvements within the CALFIRE network.

California Department of General Services

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DEADLINE

Nondestructive Testing (NDT) ServicesThis subcontract for Nondestructive Testing (NDT) Services involves performing specialized inspections on structural elements for prime contractors working on CALFIRE facility projects. The primary objective is to detect internal flaws using ultrasonic, radiographic, or magnetic particle testing equipment. The selected provider is responsible for delivering detailed NDT certification reports and comprehensive flaw analysis to ensure structural integrity. The project is managed through the California Department of General Services and will be performed in San Diego. To qualify, personnel must hold an NDT Level II certification or higher in accordance with ASNT CP-189 standards. Interested parties should note the response deadline of November 24, 2026, and the associated NAICS code 541380.

California Department of General Services

POSTED

DEADLINE

Structural Steel, Bolting, and Welding InspectionThis subcontract opportunity, managed by the California Department of General Services, involves providing specialized visual and technical inspections for structural steel, welding, and high-strength bolting on CALFIRE facility projects located in San Diego. The selected contractor will be responsible for utilizing welding gauges and torque wrenches to ensure structural integrity, ultimately delivering detailed welding inspection reports and bolting torque logs to the prime contractor. To qualify for this engagement, personnel must hold both AWS Certified Welding Inspector and ICC Structural Steel and Welding Inspector certifications. Interested parties should note that the solicitation was posted on October 28, 2026, with a response deadline set for November 24, 2026.

California Department of General Services

POSTED

DEADLINE

Concrete and Reinforcing Steel Special InspectionThis subcontract for Concrete and Reinforcing Steel Special Inspection involves providing specialized inspection and testing services for prime contractors on CALFIRE facility projects in San Diego. The scope of work includes inspecting reinforcing steel placement and performing concrete sampling and testing for structures such as barracks, apparatus bays, and generator buildings. Required deliverables include concrete strength reports and reinforcing steel inspection checklists, utilizing tools such as concrete cylinders, slump cones, and compression testing machines. Qualified providers must hold ICC Reinforced Concrete Special Inspector and ACI certifications to ensure compliance with project standards. This opportunity is managed through the California Department of General Services under NAICS code 541380. The response deadline for this solicitation is November 24, 2026.

California Department of General Services

POSTED

DEADLINE

Soils Inspection and Density TestingThis subcontract, managed by the California Department of General Services, involves providing specialized soils inspection and density testing for a CALFIRE facility project, specifically a fire station replacement in Potrero, California. The selected contractor will perform both field and laboratory testing of soils to support prime contractors during critical phases of construction, including clearing, grading, and foundation preparation. All work must be conducted in accordance with ASTM D 3740 standards, utilizing nuclear gauges and laboratory soil testing apparatus to ensure structural integrity. The contractor is responsible for delivering detailed soil density test reports and comprehensive inspection logs. This opportunity falls under NAICS code 541380 and was posted on October 28, 2026, with a response deadline of November 24, 2026. While the project is located in Potrero, the place of performance is listed within San Diego.

California Department of General Services

POSTED

DEADLINE

Environmental Analytical Testing ServicesThis subcontract for Environmental Analytical Testing Services supports prime contractors working on research and enforcement projects for the California Department of Fish & Wildlife. The scope of work involves performing specialized analytical testing on water and waste samples, specifically focusing on nutrient analysis, turbidity, BOD, COD, and low-level cleanups for pesticides, PAHs, and SVOCs. All work must be performed in accordance with EPA and SW-846 standards, and the provider is required to maintain ELAP certification to deliver Level II and Level IV analytical reports. The project is categorized under NAICS code 541380 and is designated for performance in Amador. Interested parties should note that the response deadline is November 17, 2026. This opportunity is managed through the Cal eProcure system for the state of California.

California Department of Fish & Wildlife

POSTED

DEADLINE

MT&IS POTRERO FIRE STATION- FACILITY REPLACEMENT

Solicitation # RESD-PMDB 2026-12

The California Department of General Services, Real Estate Services Division, is soliciting professional Materials Testing and Inspection Services (MT&IS) for the replacement of the Potrero Fire Station for CALFIRE in San Diego County. The project involves the construction of a standard two-engine fire station on a site of approximately seven acres, with a total estimated construction cost of $23,587,800.00. The selected contractor will be responsible for providing all labor, equipment, and insurance for field laboratory testing, including inspections of soils, reinforcing steel, structural steel, aggregate, and concrete. All services must be managed through CIMB's Procore software and comply with LEED standards and specific technical certifications, such as ASTM D 3740 for soil testing and ASNT CP-189 for nondestructive testing. The contract is estimated to last twenty-four months, with a ten percent retention held for all progress payments. Selection is based on a two-step process involving a written Statement of Qualifications (SOQ) and oral interviews for a short list of typically three firms. Evaluation criteria focus on the experience of the firm, principals, and key personnel, as well as quality control and testing methodologies. Interested firms must submit their SOQ in PDF format via the designated DGS Box.com site by November 23, 2026. Required documentation includes Federal Form SF330, a letter of interest with a Federal Identification Number, and proof of California professional licensing and DIR registration. The final contract will be based on negotiated fixed rates for specific employee classifications and services.

California Department of General Services

POSTED

DEADLINE

Invitation For Bid P2675010, Analytical Testing Services

Solicitation # P2675010

The California Department of Fish and Wildlife Office of Spill Prevention Response Laboratory Program is soliciting bids for analytical testing services to provide contingency capacity for water quality and nutrient analysis. These services will support research studies with partner state agencies and enforcement actions to protect state waters and wildlife, specifically filling gaps in internal testing capabilities or providing backup during catastrophic instrument failures. The contract is valued at a maximum of 31,000.00 dollars with a performance period running from January 1, 2027, through December 31, 2029. The award will be granted to the lowest responsive and responsible bidder. Key requirements include California Environmental Laboratory Accreditation Program certification for wastewater and hazardous waste testing, with specific sensitivity standards for sediment samples per 22 CCR 66261.24. Bidders must provide a Quality Assurance Manual, Method Detection Limits, and a Level II report example. The contractor is also responsible for providing all necessary pre-cleaned sample containers and preservatives, with associated shipping and material costs included in the bid price. Submissions are due by November 16, 2026, and must include a comprehensive set of certifications, including the Bid Cost Sheet, Payee Data Record, and Darfur Contracting Act Certification. Preference is given to certified Small Businesses, and incentives are available for Disabled Veteran Business Enterprise participation. Bids may be submitted via email as a PDF, by mail, or by hand delivery, while faxed submissions are strictly prohibited.

California Department of Fish & Wildlife

POSTED

DEADLINE

Geotechnical Engineering & TestingThis subcontract for Geotechnical Engineering and Testing supports the Saint Mary's County Metropolitan Commission on various utility projects. The selected contractor will be responsible for performing soil laboratory analysis and field density testing to ensure all work meets established compaction specifications. Key deliverables include the provision of certified test results and detailed compliance reports. To qualify for this engagement, the contractor must employ a Professional Engineer licensed in the State of Maryland. Interested parties must submit their responses by December 1, 2026. This opportunity falls under NAICS code 541380 and is designed to provide essential quality assurance for prime contractors operating within the agency's jurisdiction.

Saint Mary's County Metropolitan Commission

POSTED

about 16 hours ago

DEADLINE

in about 1 month

AI Contract Overview

This subcontract, issued by the Department of the Interior's Office of Acquisition Grants, focuses on the performance of radiocarbon and oxygen isotope analyses on tree rings. The primary objective of these scientific analyses is to support the geochronologic dating of seismic and landslide events. The opportunity was posted on August 14, 2026, with a response deadline of August 25, 2026. It is categorized under NAICS code 541380, which pertains to industrial organization and management consulting.

General Info

DOI subcontract for radiocarbon and oxygen isotope analyses to date seismic and landslide events.

Agency

Department Of The Interior → Office Of Acquisiton Grants

NAICS

541380 - Testing Laboratories and Services

Place of Performance

Set-Aside

NONE

Documents

This scope was carved out of 140G0326Q0199.

The full solicitation package (1 document), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

laboratory services for tree ring samples

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Timeline

PhaseClosed

PostedAug 14

subcontract

Response DeadlineAug 25

Deadline has passed

Submission Closed

08/25/2026, 12:00:00 AM UTC

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Organization & Contact Information

AgencyDepartment Of The Interior → Office Of Acquisiton Grants

ContactsNo contacts available

OfficeN/A

Organization / AgencyDepartment Of The Interior → Office Of Acquisiton Grants

Office AddressN/A

ContactsNo contact information available

Full Description

Perform radiocarbon (¹⁴C) and oxygen isotope (δ¹⁸O) analyses on tree rings to support geochronologic dating of seismic and landslide events.

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Radiocarbon and Stable Isotope Analysis

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Full Description

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