This document provides details on a federal contract opportunity for geotechnical investigation services. The National Park Service is soliciting proposals under solicitation number 140P2023R0132 to provide geotechnical investigation and reporting for repairs to the Cape Hatteras Lighthouse in North Carolina. Proposals are due by September 30, 2023 and the contract is expected to be awarded by October 31, 2023. The 11MB PDF file attached contains additional technical requirements for the geotechnical investigation of the lighthouse structure to support planned repair work. Services will include field exploration, laboratory testing, analysis, and reporting to assess soil conditions and provide recommendations for foundation repairs and structural upgrades.