The Department of Defense, through the U.S. Army Corps of Engineers (USACE) Los Angeles District, is seeking qualified engineering firms for the Remedial Design (RD) of the Iron King Mine-Humboldt Smelter (IKM-HS) Superfund Site located in Dewey-Humboldt, Arizona. The objective is to identify both small and other than small business sources to assist in the design and implementation of Alternative 3B, which involves the consolidation and containment of mine and smelter wastes at designated repositories, as outlined in the Record of Decision by the Environmental Protection Agency (EPA). This project is critical for environmental remediation and compliance with federal regulations, with an estimated contract value of up to $49 million over a five-year period, anticipated to be awarded in the second quarter of Fiscal Year 2026. Interested firms must submit their qualifications by February 11, 2025, and are encouraged to participate in an Industry Day on January 28, 2025, for further engagement and clarification on the project requirements. For inquiries, contact Roger Minami at kinyar.minami@usace.army.mil or Rubyann Prout at rubyann.prout@usace.army.mil.