This report describes the designed and as-built foundation conditions for major additions to the existing Tripler Army Medical Center. The major additions include construction of three 6-story wings to the existing hospital and a central energy plant. The report was prepared in accordance with ER 1110-1-1801 dated 15 December 1981. Its purpose is to insure preservation for future use the complete record of foundation conditions encountered during construction, and methods used to adapt the major additions to these conditions. The most important uses to which this foundation report may be put are: (1) in planning additional foundation treatment should the need arise after project completion, (2) in evaluating the cause of stress, deformation or failure of a structure, and in planning remedial action should failure or partial failure of a structure occur as a result of foundation deficiencies, (3) for guidance in planning foundation explorations and in anticipating foundation problems for future comparable construction projects, (4) as an information base in determining the validity of claims made by construction contractors in connection with difficulties arising from alleged foundation conditions, and (5) as part of the permanent collection of project engineering data requird by Appendix A to ER 1110-2-100.