AECOM Technical Services Inc., Los Angeles, California, is awarded a $12,661,824 cost-plus-award-fee modification to task order N6274218F0126 under an indefinite-delivery/indefinite-quantity contract for investigation and remediation of releases, and groundwater protection and evaluation for Red Hill Bulk Fuel Storage Facility, Joint Base Pearl Harbor-Hickam, Hawaii. The work to be performed under this modification provides supplemental work required by the regulators, such as, a pilot continuous soil gas monitoring system under several tanks; continued groundwater and drinking water sampling and evaluation; installation of three monitoring wells; additional groundwater modeling; continued groundwater tracer/in-well test; release response sampling and analysis; associated documents; and support for required meetings. Work will be performed in Oahu, Hawaii, and is expected to be completed by January 2024. Working capital (Department of Defense) funds in the amount of $12,661,824 are obligated on this 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 (N62742-17-D-1800).