Home2000 Treaties and Agreements ...El Salvador (00-823) – Agreement of Cooperation Concerning US Access to and Use of Facilities at the International Airport of El Salvador for Aerial Counter-Narcotics Activities hide El Salvador (00-823) – Agreement of Cooperation Concerning US Access to and Use of Facilities at the International Airport of El Salvador for Aerial Counter-Narcotics Activities TIAS Office of Treaty Affairs August 23, 2000 Law Enforcement: Narcotic Drugs Agreement signed at San Salvador March 31, 2000; entered into force August 23, 2000. Agreement extending the agreement. Effected by exchange of notes at San Salvador July 2, 2008 and April 2, 2009; entered into force April 2, 2009. Download Attachment [2 MB] Tags El Salvador International Law, Treaties, and Agreements Law Enforcement Narcotics