Please Send Comments or suggestions to: Ken Snell Date Last Updated: April 21, 2000 Below are Class I Wildernesses Managed by the USDA Forest Service, Pacific Northwest Region. To Find Out More About Air Quality Related Values (AQRV's) for a Particular Wilderness Click its Image. Down Load Data Get Lichen Information. Get Prescribed Fire Emissions data, 1985-1997 Get Improve Data Get Class I ...