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This Government Contract opportunity from Colorado was posted on June 17, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

Maintenance of Mine Closures

Closed
State & Local

Contract Overview

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

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NAICS: 562910
New
SLED
Truck Loading Biofilter Media Replacement at Plant No. 2 (FR2-0034)
Solicitation # S-2026-736BD
The Orange County Sanitation District (OC San) is soliciting bids under solicitation S-2026-736BD for a general services contract to replace fouled biofilter media within the Truck Loading Biofilter System at Plant No. 2. The project requires the contractor to provide all labor, equipment, and materials to procure Biorem-manufactured media, remove and dispose of 5,624 cubic feet of old media and mesh, clean the air distribution system, and coordinate installation and operator training. To maintain continuous odor control, no more than one biofilter cell may be removed from service at a time. The work must be completed within 84 calendar days from the Notice to Proceed, with all deliverables accepted by the OC San Project Manager. Eligible bidders must hold a California Contractor's License classification A and comply with California Department of Industrial Relations prevailing wage requirements and CARB mobile source regulations. Mandatory requirements include attendance at a pre-bid meeting on September 24, 2026, and submission of bids via the OpenGov portal by October 20, 2026. Bidders must provide proof of comprehensive insurance, including general liability of 2 million dollars per occurrence and 4 million dollars aggregate. Award will be granted to the lowest responsible and responsive bidder. All hazardous materials and waste must be labeled and stored with secondary containment in accordance with safety standards.
Procurement

POSTED

1 day ago

DEADLINE

in about 1 month

AI Contract Overview

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The contract pertains to the ongoing maintenance of mine closures in Colorado, requiring continuous monitoring, inspection, and repair activities to ensure long-term structural stability and environmental protection. Work will involve routine assessments of closure features such as caps, drainage systems, and containment barriers, along with timely intervention to address erosion, settlement, or contamination risks. The scope is focused on sustaining regulatory compliance and preventing ecological harm over the extended lifecycle of abandoned mining sites. This is a subcontract opportunity under NAICS code 562910, administered by the Colorado Division of Reclamation, Mining and Safety under the Department of Natural Resources. The solicitation was posted on June 17, 2026, with responses due by June 23, 2026. Performance will take place across various mine closure sites within the state, though exact locations are not specified. Interested parties must respond through the provided online portal, and the contract does not indicate any set-aside provisions or specific eligibility criteria beyond general subcontractor qualifications.

General Info

Ongoing mine closure maintenance in Colorado requiring monitoring, inspections, and repairs for environmental compliance and structural stability.

Agency

Colorado → DNR - Division Of Reclamation Mining & SafetyView Agency

NAICS

562910 - Remediation ServicesView NAICS

Place of Performance

Not specified

Set-Aside

NONE

Documents

This scope was carved out of DQ1 PKAA 2026*0499.

The full solicitation package (15 documents), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

PKAA, Walsen Project

AI Contract Breakdown

Uniform Contract Format

No contract breakdown available.

Cannot generate Contract Breakdown because no documents were found from this contract's source.

Timeline

PhaseClosed
Posted

subcontract

Response Deadline

Deadline has passed

Submission Closed

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Organization & Contact Information

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AgencyColorado → DNR - Division Of Reclamation Mining & Safety
ContactsNo contacts available
OfficeN/A
Organization / Agency
Colorado → DNR - Division Of Reclamation Mining & Safety
View Agency Profile
Office AddressN/A
ContactsNo contact information available

Full Description

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Ongoing monitoring, inspection, and repair of installed mine closures to ensure long-term stability and environmental protection.

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