iodine 131

Anna King / Northwest News Network

The small amounts of radioactive Iodine-131 found in milk in Spokane has been causing ripples of concern throughout the Northwest. Officials say the tiny amounts of radiation found in the milk were probably blown over from Japan’s stricken nuclear plants.

Just outside the Tri-Cities, Drex Gauntt’s alfalfa fields roll out like a plush emerald shag carpet. One of the ways that cows can pass Iodine-131 into their milk is by eating grass or hay that’s been contaminated with the radioactive isotope. Gauntt says he’s not too concerned.