Emerald Coast Utility Services Inc., Eglin Air Force Base, Florida, has been awarded a $47,735,304 modification (P00056) to a 50-year contract (SP0600-16-C-8311), with no option periods for additional water and wastewater utility services at Eglin Air Force Base, Florida. This is a fixed-price with economic-price-adjustment contract. Location of performance is Florida, with a June 14, 2067, performance completion date. Using military service is the Air Force. Type of appropriation is fiscal 2021 through 2067 operations and maintenance funds. The contracting activity is the Defense Logistics Agency Energy, Fort Belvoir, Virginia.