CH2M Hill Inc., Englewood, Colorado, was awarded an $8,593,830 cost-plus-award-fee task order under an indefinite-delivery/indefinite-quantity contract for remedial investigations for per- and polyfluoroalkyl substances at Naval Air Station Whidbey Island. The work to be performed provides for addressing requirements of the Comprehensive Environmental Response, Compensation, and Liability Act, Sections 104 and 121, Executive Order 12580, and the National Oil and Hazardous Substances Pollution Contingency Plan. Work will be performed in Coupeville, and Oak Harbor, Washington, and is expected to be completed by July 2028. Fiscal 2023 environmental restoration (Navy) funds in the amount of $8,593,830 are obligated on this award and will not expire at the end of the current fiscal year. Naval Facilities Engineering Systems Command, Silverdale, Washington, is the contracting activity (N62470-21-D-0007).