M.A. Mortenson Co., Minneapolis, Minnesota, is awarded a $24,257,556 firm-fixed-price modification to previously awarded contract (N69450-18-C-0905). This modification provides for the unforeseen steel repairs to Explosive Handling Wharf #1 at Naval Submarine Base Kings Bay, Georgia. This modification brings the total cumulative value of the contract to $128,817,353. Work will be performed in St. Marys, Georgia, and is expected to be completed by December 2023. Fiscal 2018 operation and maintenance (Navy); and fiscal 2019 operation and maintenance (Navy) funds in the amount of $24,257,556 will be obligated at time of award. Previous year funds were received in support of this in-scope modification executed due to unforeseen conditions in accordance with Defense Federal Acquisition Regulation 52.236-2 on a sole source basis, with one offer received. The Naval Facilities Engineering Systems Command, Southeast, Jacksonville, Florida, is the contracting activity.