They are also saying that the “minuscule amounts” are not harmful and “pose no health concern.”
Similar amounts of radioactive iodine, cesium and tellurium were also detected by monitors in San Francisco and Seattle.
“The radiation levels detected on the filters from California and Washington monitors are hundreds of thousands to millions of times below levels of concern,” according to an EPA statement.
The agency noted that on a typical day, Americans receive doses of radiation from rocks, bricks and the sun that are 100,000 times higher than what has been detected in material coming from Japan.
