About the Author
Dr. Will D. Robertson is Professor Emeritus in the Department of Earth and Environmental Sciences, University of Waterloo in Ontario, Canada, where he taught courses on physical hydrogeology and field methods in hydrogeology over a 20-year period. During that time, he advised more than 30 graduate and undergraduate students and published over 50 journal manuscripts related to groundwater age dating techniques and contamination issues associated with mine tailings, on-site wastewater disposal, and agriculture. He is also co-inventor of several patents related to enhancing nitrogen and phosphorus removal in agricultural runoff and in septic systems.