The U.S. Army Corps of Engineers Far East District plans to procure geotechnical drilling services at various military bases in the Republic of Korea. This will be a firm-fixed-price Single Award Task Order (SATOC), Indefinite Delivery Indefinite Quantity (IDIQ) contract with an estimated total capacity of $3 million. The contract includes a one-year base period plus four one-year option periods, for a total duration of sixty months if all options are exercised. The awardee must determine subsurface soil and rock conditions, groundwater conditions, and geotechnical properties at drilling, testing, and investigation sites, and provide all resources required for each Task Order.