The purpose of this emission scenario document (ESD) is to provide a realistic worst-case emission scenario for chemicals used at kraft pulp mills. The general information about the processes and chemicals used is derived from literature data and several reports from the European Union and the United States. The emission estimation methods given in this ESD are based on those developed by the Organization for Economic Cooperation and Development with parameter defaults reflecting Canadian operations. This ESD for Kraft Pulp Mills was developed in 2004 along with two sister documents, an ESD on Non-integrated Paper Mills, and an ESD on Recovered Paper Mills. Although they were designed as stand alone documents, by their nature they represent different phases of the life cycle of paper products.