1. National Exposure Research Laboratory; U.S. Environmental Protection Agency; 26 West Martin Luther King Drive Cincinnati Ohio 45268
2. Dynamac Corporation; Cincinnati Ohio 45268
3. Dynamac Corporation; at the time this article was prepared, now Geographer, Joint Airborne Lidar Bathymetry Technical Center of eXpertise; U.S. Army Engineer Research and Development Center; Kiln Mississippi 39556
4. National Health and Environmental Effects Research Laboratory; U.S. Environmental Protection Agency; Corvallis Oregon 97330
5. Region 10, Oregon Operations Office; U.S. Environmental Protection Agency; Portland Oregon 97205