The Department of Defense, through the U.S. Army Corps of Engineers, New England District, is seeking bids for 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 from historical copper mining operations, with specific components including crushed stone, a drainage layer, a geomembrane, and geofabric. This procurement is a 100% Small Business Set-Aside, with an estimated cost range of $5 to $10 million, and work is expected to take place during the peak months from Spring through Fall. Interested parties should note that the solicitation will be available online around mid-January 2026, and inquiries can be directed to Elizabeth Glasgow at elizabeth.k.glasgow@usace.army.mil or Erin Bradley at erin.e.bradley@usace.army.mil.