Home2004 Treaties and Agreements ...Mexico (04-305.1) – Minute 311 of the International Boundary Water Commission: Recommendations for Secondary Treatment in Mexico of the Sewage Emanating from the Tijuana River Area in Baja California, Mexico hide Mexico (04-305.1) – Minute 311 of the International Boundary Water Commission: Recommendations for Secondary Treatment in Mexico of the Sewage Emanating from the Tijuana River Area in Baja California, Mexico TIAS Office of Treaty Affairs March 5, 2004 Boundaries and Boundary Waters Minute No. 311 signed at El Paso February 20, 2004; entered into force March 5, 2004. With related letter. Download Attachment [986 KB] Tags Boundaries and Boundary Waters Mexico Treaties