Lawrence Livermore National Laboratory (pdf), Sept 28, 2015 (emphasis added):
- Ambient Air Radioactive Particulates
- Composite samples were analyzed by alpha spectroscopy for plutonium-239+240, which was detected in 2 out of 206 samples taken in 2014. Detections at the Livermore Site and Livermore off-site locations [in California] for plutonium-239+240 are attributed to a number of factors including the following: resuspension of plutonium-contaminated soil (see Chapter 6); ambient air from historical operations; resuspended fallout from previous atmospheric testing; or fallout from the Fukushima nuclear accident.
- The highest values and percentage of the DCS for the plutonium-239+240 detections were as follows: Livermore Site perimeter: 13.4 nBq/m3 (0.36 aCi/m3)… Livermore off-site locations: 10.4 nBq/m3 (0.28 aCi/m3).
See also: Official data shows U.S. hit with huge spike of 'most dangerous' radiation from Fukushima -- Levels far exceeded federal regulatory limits -- Alpha particles nearly 1,000 times normal; Includes plutonium -- Gov't workers in "fear of radiation"
Published: December 28th, 2015 at 6:54 pm ET
- Report: Fukushima fallout detected in U.S. fish — Dose equal to samples caught 100 miles from plant — Persistently high levels detected in marine life offshore “not anticipated… orders of magnitude” more than expected — “Measurements needed… along predicted plume trajectory” March 2, 2015
- Gov’t Report: Elevated radiation on California coast to last “several decades” — Local marine life “will accumulate” Fukushima radioactive material — Plutonium a potential concern — “On-going monitoring clearly warranted” yet ‘surprisingly little’ underway (VIDEO) May 21, 2014
- Report: ‘Explosion in protected area’ at US nuclear plant after recent fatal accident April 5, 2013
- Airborne plutonium detected outside troubled U.S. nuclear facility — Expert: ‘Radiation event’ appears to have occurred, leading to a release; “Levels are highest ever detected” around site February 19, 2014
- Director: We saw plutonium from Fukushima out in New Mexico desert — “Local and regional contaminations of plutonium in environment have resulted from nuclear accident” December 9, 2013