Construct Repository Cover for Callahan Mine Superfund Site in Brooksville, Maine
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The Department of Defense is procuring the construction of a repository cover to support the Callahan Mine Superfund Site in Brooksville, Maine. The project involves installing a composite cap over approximately 13 acres to limit infiltration through mine waste, including various components such as crushed stone, drainage layers, and geomembranes. Additional activities may include drainage feature installation, grading, and wetland improvements.
Scope & Requirements
The contract involves constructing a composite cap over mine waste at the Callahan Mine Superfund Site, including drainage features and stabilization activities.
Contract Details
- Contract Type
- TBD
- Estimated Value
- est. $150K – $25MSimilar contracts award $27K – $565K (median $125K, 13,353 awards)Above typical range
- NAICS Codes
- Place of Performance
- Brooksville, Maine, USA
Agency & Contact
Contracting Organization
- Agency
- DEPT OF DEFENSE
- Sub-Agency
- US Army Corps of Engineers
- Office
- Engineer Division North Atlantic
Point of Contact
Key Dates
Description
Construct Repository Cover to Support the Callahan Mine Superfund Site in Brooksville, Maine.The general
scope of work for the proposed contract involves installing a composite cap over an area of approximately 13 acres. The purpose of the cap is to limit infiltration through mine waste remaining after historical copper mine operations performed on the property. The mine waste consists of rock and rock-amended sediment previously consolidated and graded as part of recent and ongoing Superfund remediation activities. The expected components of the composite cap include in order from the surface: 12 inches crushed stone (3-inch minus), geocomposite drainage layer, 60-mil textured geomembrane (seam welded), and geofabric. Other activities to be performed under this contract may include installation of drainage features (e.g., swales, culverts, etc.), grading, seeding and stabilization of disturbed areas outside stone cover system, stockpile management, and wetland improvements. Elizabeth Glasgow
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