The Department of the Interior, specifically the Bureau of Indian Affairs through the Indian Education Acquisition Office, is seeking proposals for Fuel Oil Tank Cleaning services at the Cheyenne Eagle Butte School in South Dakota. This procurement is set aside for Indian Small Business Economic Enterprises (ISBEE) and requires contractors to provide detailed qualifications, experience, and pricing in their proposals, adhering to FAR and DIAR regulations. The contract will be a firm fixed price, with a performance period of 15 days post-award, and contractors must maintain liability insurance and comply with various regulatory requirements. Interested parties should contact Leah Azure at leahr.azure@bie.edu or (505) 803-4256 for further details and must ensure registration in SAM.gov prior to submission.