This is a pre-solicitation notice for environmental services and compliance support at three Air Force Bases: Malmstrom AFB in Montana, Mountain Home AFB in Idaho, and Fairchild AFB in Washington. The work includes a wide range of activities such as air quality management, hazardous waste support, environmental sampling, and regulatory reporting. The contract will be a hybrid Firm-Fixed-Price, Time and Material, and Cost type issued as a competitive Section 8(a) set-aside through the OASIS+ GWAC. Site visits are scheduled for late April 2026 at each base, and registration is required by April 20, 2026. No budget information is specified in this notice.