In the USA, the United States Department of Energy (US DOE)has published biota protection guidelines and dose rates (USDOE 1993; USDOE 2003|http://http://retired.doe.doxcelerate.com/cgi-bin/explhcgi?qry1508601897;doe-235)
Documentation of the US DOE Graded Approach
USDOE, 2002. A Graded approach for evaluating radiation doses to aquatic and terrestrial biota. Technical standard DOE-STD-1153-2002, Modules 1-3, United States Department of Energy, Washington D.C.
USDOE, 1993. Radiation protection of the public and the environment, DoE order 5400.5, United States Department of Energy, Washington D.C.
USDOE, 2003. Environmental protection program, DOE Order 450.1. United States Department of Energy, Washington D.C.