Home2008 Treaties and Agreements ...Costa Rica (08-827) – Memorandum of Understanding Concerning Communications Equipment Installed in Cerro Azul, Nandayure, Nicoya, Province of Guanacaste hide Costa Rica (08-827) – Memorandum of Understanding Concerning Communications Equipment Installed in Cerro Azul, Nandayure, Nicoya, Province of Guanacaste TIAS Office of Treaty Affairs August 27, 2008 Defense: Communications Memorandum of understanding signed at San Jose August 27, 2008; entered into force August 27, 2008. Download attachment [247 KB] Tags Costa Rica Defense Treaties