Oklahoma City Water Utilities Trust, Oklahoma City, Oklahoma, has been awarded an $8,510,197 modification (P00015) to a 50-year contract (SP0600-20-C-8331), with no option periods, for water and wastewater utility services at Tinker Air Force Base, Oklahoma City, Oklahoma. This is a regulated tariff rate contract. The performance completion date is Oct. 31, 2071. Using military service is Air Force. Type of appropriation is fiscal 2024 Air Force operations and maintenance funds. The contracting activity is the Defense Logistics Agency Energy, Fort Belvoir, Virginia.