Charles D. Shackelford is Professor and Head of the Department of Civil and Environmental Engineering, Colorado State University, Fort Collins, Colorado, USA. He has 40 years of experience pertaining to the geoenvironmental aspects of waste management and environmental remediation, is a registered professional Civil Engineer in California and Colorado, and has served as an expert on waste disposal issues on numerous occasions for private companies and federal agencies.

Between 2001 and 2006, he served as the Director of the Rocky Mountain Regional Hazardous Substance Research Center (HSRC) for EPA Region 8, one of five EPA sponsored HSRCs during that period covering the 10 EPA designated geographical regions comprising the U.S. Shackelford has given 125 invited presentations in the U.S., Puerto Rico, and 26 other countries. He has served as an Editor for both the ASCE Journal of Geotechnical and Geoenvironmental Engineering and the Journal of Hazardous Materials published by Elsevier, Amsterdam, and currently serves as an Editor for Elsevier’s Geotextiles and Geomembranes. He also was past chair of the Geoenvironmental Engineering Committee (GEC) of ASCE’s Geo-Institute, and past co-chair for the Environmental Geotechnics Committee TC215 of the International Society of Soil Mechanics and Geotechnical Engineering (ISSMGE), and currently is still a member of both the GEC and TC215. He also served as a member and the chair of ASCE Geo-Institute’s (GI’s) Awards Committee, as a member of the Technical Coordination Council of ASCE’s GI, and was an elected Board Member of the U. S. University Council on Geotechnical Education and Research (USUCGER). Shackelford was elected to the Academy of Civil Engineers at his alma mater, the Missouri University of Science and Technology, in 2005.