The U.S. Army Garrison, Hawaii is proposing to modernize the Pilila'au Army Recreation Center (PARC) on the Island of O'ahu, Hawaii. The proposed undertaking involves multiple related modernization projects, to occur in phases over several years, including rehabilitation of the current yard, construction of restrooms, installation of perimeter fencing, installation of an irrigation system, and general landscaping, and may be expanded to include operations, maintenance, and other activities, as determined in consultation.