This is a pre-solicitation Request for Information (RFI) for the Navajo Area Abandoned Mines Response and Construction Services II contract, seeking industry comments on a draft RFP. The contract will provide cleanup, response, and construction services for former uranium mining sites on the Navajo Nation within EPA Region 9 (Arizona and New Mexico). The anticipated contract type is a single award Indefinite Delivery/Indefinite Quantity (IDIQ), with the formal RFP release expected in Fall 2026. Performance will occur in rough, remote terrain requiring 4-wheel drive vehicles and hiking, with extreme weather conditions and flash flood risks. No budget amounts are specified in this notice.