The Department of Environmental Conservation proposed to amend 18 Alaska Admin. Code 50, dealing with air quality control. Changes would adopt a new standard for sulfur dioxide, add new significant impact levels for fine particulate matter, and adopt a new emissions rate basis for greenhouse gases. There will be a public hearing on March 18, 2011, and the deadline for comment is March 24. http://notes4.state.ak.us/pn/pubnotic.nsf/1604e1912875140689256785006767f6/1776713bc596561989257837006c633e?OpenDocument.