1. U.S. Geological Survey; Tennessee Water Science Center; 640 Grassmere Park, Suite 100 Nashville Tennessee 37211 USA
2. Department of Earth and Environmental Sciences; Vanderbilt University; 5726 Stevenson Center Nashville Tennessee 37240 USA
3. Vanderbilt Institute for Energy and Environment; Vanderbilt University; 155 Buttrick Hall Nashville Tennessee 37232 USA
4. U.S. Department of the Interior; Office of Surface Mining; 710 Locust St. Knoxville Tennessee 37902 USA