AECOM Technical Services Inc., Los Angeles, California, is awarded a $28,438,261 cost-plus-award-fee modification to a previously-awarded task order (N6274222F0106) under previously-awarded contract N62742-17-D-1800 for comprehensive long-term environmental action at various sites within the Naval Facilities Engineering Systems Command Pacific area of responsibility. This award brings the total cumulative face value of the contract to $39,798,700. The contract task order modification is for additional support for drinking water system sampling and evaluation, National Pollutant Discharge Elimination System sampling, surface soil sampling, installation of piezometers, completion of synoptic water level monitoring surveys, and groundwater modeling. Work will be performed in Oahu, Hawaii, and is expected to be completed by December 2022. Fiscal 2022 operation and maintenance (Navy) funds in the amount of $28,438,261 will be obligated at time of award and will not expire at the end of the current fiscal year. The Naval Facilities Engineering Systems Command Pacific, Joint Base Pearl Harbor-Hickam, Hawaii, is the contracting activity.