The Standard Operating Procedure (SOP) provides procedures and guidelines for the implementation of monitoring and assessment (Articles 7-8) and joint emergency response (Articles 12-15) of the Agreement on Transboundary Haze Pollution. This SOP is formulated based on the above relevant provisions of the Agreement. The SOP was adopted by the ASOEN-Haze Technical Task Force (HTF) on 16 February 2006 to be used as a regional SOP. The SOP was amended and endorsed by the 18^th Meeting of the Conference of the Parties to the ASEAN Agreement on Transboundary Haze Pollution (COP-18).