Though NOAA has consistently claimed tsunami debris threatening North America will not be radioactive. A new paper by the Congressional Research Service says otherwise.
Effects of Radiation from Fukushima Dai-ichi on the U.S. Marine Environment
Congressional Research Service
Eugene H. Buck, Specialist in Natural Resources Policy
Harold F. Upton, Analyst in Natural Resources Policy
April 2, 2012
[...] Initial models suggested that in a year, debris could reach the Northwestern Hawaiian Islands Marine National Monument; in two years, the remaining Hawaiian islands could see this debris; in three years, the debris plume likely would reach the U.S. west coast, dumping debris on California beaches and the beaches of British Columbia, Alaska, and Baja California.
Although much of the radioactive release from Fukushima Dai-ichi is believed to have occurred after the tsunami, there is the possibility that some of the tsunami debris might be contaminated with radiation from Fukushima Dai-ichi.
More recent observations indicate that some debris could be traveling faster than predicted. The debris field has been estimated to contain possibly millions of tons of debris and to be approximately 3,700 kilometers long and 1,800 kilometers wide. [...]
h/t Gregg Levine
Published: April 7th, 2012 at 8:47 pm ET