US EPA
Ray Clark is a health physicist in the Office of Radiation and Indoor Air at the U.S. Environmental Protection Agency (EPA). He has a Bachelor of Science in Physics from Nebraska Wesleyan University and a Master of Science in Nuclear Science/Health Physics from the Georgia Institute of Technology. He has developed EPA radioactive waste standards since 1982, including the Yucca Mountain standards, and is now also a planner for the EPA Radiological Emergency Response Team. He has attended Waste Management Symposia since the late 1980s, been on the Program Advisory Committee since the 1990s, and currently is a Waste Management Fellow and Track 1 Co-chair.