Mr. Rollins - Try Reg. Guide 1.86 "Termination of Operating Licenses for Nuclear Reactors". This Reg. Guide establishes free release limits for surface-contaminated items. While it does not address volumetric contamination, it nonetheless is a potent tool to have in your regulatory compliance survival kit. Hope this helps. Steve Frey, HP Stevenfrey@aol.com Phone (800) 888-7008 (office); (714) 646-4631 (home)