Thursday, April 21, 2011

4/21/11 Rainshower @ 5x background radiation

4/21/11 8:15 pm, I took a reading from wipes of the hood and from the grill; samples were taken approximately 1.5 hours after the rain had started. Both samples were mostly free of dirt, and had readings of roughly 0.05 mR/hr. The truck had been driven approximately 3 miles in the rain.

These samples were taken long enough after the rain started that they should not be influenced by Radon daughters from washout. I am working on a methodology to minimize affects (if any) from Radon daughters.