HOOVER, Rachael H., School of Earth & Environmental Sciences, Washington State University, Webster Physical Science Building 1228, Pullman, WA 99164, hooverrh@gmail.com, GAYLORD, David R., School of Earth & Environmental Sciences, Washington State University, PO Box 642812, Pullman, WA 99164-2812, RUPP, Richard A., Crop and Soil Sciences, Washington State University, Pullman, WA 99163, and PHILLIPS, William M., Idaho Geological Survey, University of Idaho, 875 Perimeter Drive MS 3014, Moscow, ID 83844-3014