5/2 (5:20pm): Our food chain samples have been updated with new samples of topsoil, spinach, kale, and arugula.
We have also begun testing Northern California seaweed.
There are no isotopes from Japan detected in the new spinach, kale, arugula, and seaweed samples. The new strawberry samples from 4/20 show no I-131, but Cs-134 and Cs-137 are present.
The highest levels of radioisotopes detected would require the consumption of more than 3 tons of strawberries in order to receive the same equivalent dose as a cross-country airplane flight.
The topsoil continues to show decreasing levels of I-131, while the trend for Cs-134 and Cs-137 is not yet clear.