The Pollution Control Agency seeks public comment on the Draft Regional Haze SIP. The purpose of this SIP revision is to address visibility protection at national parks, wildernesses, and scenic areas, also referred to as mandatory Class I federal areas. Class I areas within Minnesota are the Boundary Waters Canoe Area Wilderness and Voyageurs National Park. The SIP lays out how Minnesota intends to implement the Regional Haze Rule. Comments are due August 19, 2009. http://www.pca.state.mn.us/news/data/bdc.cfm?noticeID=281485&blobID=25110&docTypeID=4.