HGI, now part of the RMA suite of companies, is a full service geophysical company with over 30 years of operations, with offices in Tucson AZ, Richland WA, and Irvine CA. Dr. Dale Rucker has been with the company for over 20 years, helping to solve complex hydrogeological issues using electrical and electromagnetic geophysical methods. His main focus has been imaging waste release plumes in the Hanford tank farms, hydrometallurgical extraction of strategic metals in mining, groundwater-surface water interactions along the Rio Grande River, mercury transport out of Oak Ridge National Lab, among others. He has a PhD from the University of Arizona, Department of Hydrology and Water Resources.