Assessment Report on Sulphur Dioxide for Developing Ambient Air Quality Objectives: Effects on Vegetation

Alberta Environment maintains Ambient Air Quality Objectives1 to support air quality management in Alberta. Alberta Environment currently has ambient objectives for thirty-one substances and five related parameters. These objectives are periodically updated and new objectives are developed as required. With the assistance of the Clean Air Strategic Alliance, a multi-stakeholder workshop was held in October 2000 to set Alberta’s priorities for the next three years. Based on those recommendations and the internally identified priority items by Alberta Environment, a threeyear work plan ending March 31, 2004 was developed to review four existing objectives, create three new objectives for three families of substances, and adopt six new objectives from other jurisdictions.