This Government Contract opportunity from Department Of The Interior was posted on April 23, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Riprap Stone Supply

Closed

Federal

Submission Closed05/11/2026, 05:00:00 PM UTC

Contract Overview

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

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NAICS: 212399

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POSTED

DEADLINE

Fill Material Supplier (Soil/Aggregate)The City of Whittier is seeking a supplier to provide Class 2 compliant fill material for earthwork and grading projects within the city limits, specifically in the 90602 zip code area. The material must meet strict specifications regarding gradation, moisture content, and contamination levels to ensure structural integrity and regulatory compliance for municipal construction activities. This subcontract opportunity is tied to infrastructure or development work managed by the city and requires adherence to industry standards for soil and aggregate materials used in foundational and earth movement applications. The contract falls under NAICS code 212399, which classifies other mining activities not elsewhere listed, indicating the material is sourced from non-metallic mineral extraction or processing operations. Posting date is June 19, 2026, with no set-aside designation specified, meaning all qualified suppliers may bid. The primary performance location is Whittier, California, and all delivered material must be tested and certified to comply with Class 2 requirements prior to acceptance. Failure to meet technical or contamination thresholds will result in rejection of deliveries and potential contract termination.

POSTED

DEADLINE

Aggregate Supply (Materials Only)The contract is for the supply of commercially sourced, weed-free aggregate conforming to ODOT 3/4-inch minus gradation specifications, intended for spot surfacing and road maintenance activities. The materials must meet strict quality standards to ensure durability and safety in federal road applications, with a focus on preventing the spread of invasive plant species through the use of certified weed-free aggregates. This is a subcontract under a Total Small Business Set-Aside, meaning only small businesses certified by the SBA are eligible to bid, and the NAICS code 212399 classifies the work under other nonmetallic mineral mining and quarrying services. Performance of the contract is centered in Springfield, Oregon, with a ZIP code of 97477, and the work supports the infrastructure needs of the Willamette National Forest, an agency under the U.S. Department of Agriculture. The contract was posted on May 7, 2026, and is focused solely on material delivery without installation or labor services. The procurement does not include a designated point of contact, and all inquiries must be directed through the official SAM.gov platform using the provided link. No specific delivery schedule or quantity thresholds are defined beyond the technical requirements for the aggregate itself.

Willamette National Forest

POSTED

DEADLINE

Mining Operations Extension ServicesThe Mining Operations Extension Services subcontract involves performing extraction and operational activities for prime contractors on Kern County Planning Commission mining projects. The scope of work includes general mining extraction, site maintenance, and operational management utilizing heavy machinery, excavation equipment, and hauling trucks to deliver extracted minerals and a maintained site. This project is governed by NAICS code 212399 and requires strict adherence to Conditional Use Permit No. 2, Map 95, and local zoning regulations for Exclusive Agriculture Districts. The contract was posted on January 28, 2026, for the agency of Kern County in California.

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Surface Mining ExecutionThis subcontract, titled Surface Mining Execution, involves the extraction and removal of minerals at the Cooper Pit #1 Mine for prime contractors on Kern County Planning Commission mining projects. The scope of work requires the operation of heavy earthmoving equipment, such as loaders, excavators, and haul trucks, to facilitate mineral extraction and site maintenance. All operations must be conducted within established mine boundaries and strictly adhere to the operational constraints of the A (Exclusive Agriculture) District. The contract is classified under NAICS code 212399 and was posted on January 28, 2026, by the Kern County agency in California. The primary objective is to deliver extracted mineral resources while ensuring the mine site remains properly maintained throughout the duration of the project. Detailed project information and access can be found through the provided California Environmental Quality Act network link.

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Class 2 Rock and Aggregate SupplyThis subcontract, issued by the California Department of Parks and Recreation, involves the procurement of Class 2 rock and various other aggregates. The materials are designated for use in critical infrastructure and environmental projects, specifically for the construction of stream crossings, the establishment of road bases, and the implementation of erosion control measures. The project is categorized under NAICS code 212399 and was posted on December 31, 2025. Interested parties can find further project details through the California Environmental Quality Act net portal using the provided project identifier.

California Parks and Recreation, Department of

POSTED

DEADLINE

Riprap Supply and DeliveryThis subcontract involves the supply and delivery of 4-ton riprap stone intended for levee armoring. The project is managed by Silicon Valley Clean Water in California and is categorized under NAICS code 212399. The work will be performed at a project site located in Redwood City, California, within the 94065 zip code. The solicitation was posted on December 23, 2025.

Silicon Valley Clean Water

POSTED

DEADLINE

Rock Supply for Coastal StructuresThis subcontract, issued by the Department of Defense through the W076 Endist Galveston agency, involves the procurement of high-quality, durable riprap for the construction of breakwaters and groins. The scope of work encompasses the entire supply chain, including the quarrying, sizing, and marine delivery of rock that strictly adheres to USACE specifications. The project is located in Matagorda and falls under NAICS code 212399. Posted on December 19, 2025, the contract focuses on ensuring the structural integrity of coastal defenses through the provision of specialized materials delivered via marine transport.

W076 Endist Galveston

POSTED

10 months ago

DEADLINE

N/A

AI Contract Overview

Dsc Contracting Services Division under the Department of the Interior is seeking a subcontractor to supply angular, durable riprap stone compliant with ASTM and FHWA standards for erosion control applications at a remote park site located at Mile Marker 20. The material must meet rigorous engineering specifications to ensure long-term stability and environmental resilience in high-wear zones. Delivery is required directly to the designated site, which presents logistical challenges due to its inaccessibility, and the contractor must account for all transportation, handling, and placement readiness as part of the scope. The solicitation was posted on April 23, 2026, with responses due by May 11, 2026, at 5:00 PM. The NAICS code 212399 indicates this procurement falls under Other Mining Activities, and while no set-aside provisions are specified, all interested parties must meet technical and compliance requirements to qualify. The place of performance and agency office details are not disclosed in the provided data, but full compliance with federal material and delivery protocols is mandatory.