CH2M Hill Constructors Inc., Greenwood Village, Colorado, has been awarded a maximum $27,661,896 modification (P00043) to a 50-year contract (SP0600-21-C-8341) with no option periods, incorporating a negotiated price redetermination for the ownership, operation, and maintenance of the water treatment and distribution system and the wastewater treatment and collection system at Fort Campbell, Kentucky. This is a fixed-price prospective redetermination contract. Location of performance is Kentucky, with an Aug. 31, 2053, performance completion date. Using military service is Army. Type of appropriation is fiscal 2023 through 2053 operations and maintenance funds. The contracting activity is the Defense Logistics Agency Energy, Fort Belvoir, Virginia.