Radioactivity 60 (2002) 165-187 RADIOACTIVITY
JOURNAL OF ENVIRONMENTAL Journal of ELSEVIER Environmental Radioactivity 60 (2002) 165-187 RADIOACTIVITY An assessment of the reported leakage of anthropogenic radionuclides from the underground nuclear test sites at Amchitka Island, Alaska, USA to the surface environment Douglas Dashera3*,Wayne ans son^, Stan Reada, Scott FalleS, Dennis Farmerc, Wes ~furd~,John Kelleye, Robert patrickf " Aluska Department of Etz~~ironmentalConservation, 610 Liniversitj Avenue, Fairbanks, AK 99709, USA ~at~sonEnvironmentul Research Sercice, Inc.,I902 Yew Street Rd., Bellingham, WA 98226, USA ' U.S. Encironmental Protection Agency Radiation and Indoor Encironments National Laboratory, P.O. Box 98517, La.r P'egrrs, NV 89193, USA d~osAlatnos Nationnl Laboratorj, Clzemical Science and Technology, MS J514, Lo.s Alamos, NM 87545, USA 'Institute of Marine Science, Lini~lersityof' Alasku Fairbanks, Fuirbanks, AK 99775, USA ~1eutinn:~ribil~flslantr' Association, 201 East 3rd Arenue, Ancltoraye, AK 99501, USA Received 14 February 2000; accepted 26 May ZOO0 Abstract Three underground nuclear tests representing approximately 15-16% of the total effective energy released during the United States underground nuclear testing program from 1951 to 1992 were conducted at Amchitka Island, Alaska. In 1996, Greenpeace reported that leakage of radionuclides, 24'~mand 239t'40 Pu, from these underground tests to the terrestrial and freshwater environments had been detected. In response to this report, a federal, state, tribal and non-governmental team conducted a terrestrial and freshwater radiological sampling program in 1997. Additional radiological sampling was conducted in 1998. An assessment of the reported leakage to the freshwater environment was evaluated by assessing 'H values in surface waters and 240~~/239~~ratios in various sample media.
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