The Indian Health Service's Northern Navajo Medical Center is conducting market research to identify capable firms to deliver diesel fuel for two emergency generators and a water boiler, with two fuel tanks at 12,000 and 8,000 gallons. This is a sources-sought notice, not a solicitation, and responses are voluntary for planning purposes only. The government will first consider Indian-owned economic enterprises (IEE/ISBEE) under the Buy Indian Act, then other small business set-aside programs. The applicable NAICS code is 324110 with a small business size standard of 1,500 employees. Interested parties must be registered in SAM.gov, and the performance location is the Northern Navajo Medical Center hospital.