Affiliation: | Waterloo Centre for Groundwater Research, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1.;Komex International Ltd., Suite 100, 4500–16th Ave. NW, Calgary, Alberta, Canada T3B 0M6.;Department of Civil Engineering, Queen's University, Kingston, Ontario, Canada K7L 3N6.;United States Geological Survey, Box 25046, Denver Federal Center, Denver, Colorado 80225.;eColorado School of Mines, Golden, Colorado 80401. |