Biological Systems Engineering


Date of this Version



Kuhn G. N., Woldt W. E., Jones D. D., Schulte D. D., "Solid Waste Disposal Site Characterization Using Non-Intrusive Electromagnetic Survey Techniques and Geostatistics," Geostatistics for Environmental and Geotechnical Applications, ASTM STP 1283, R. M. Srivastava, S. Rouhani, M. V. Cromer, A. I. Johnson, A. J. Desbarats, Eds., American Society for Testing and Materials, Philadelphia, 1995.


Copyright 1996 by ASTM International. Used by permission.


Prior to the research reported in this paper, a site-specific hydrogeologic investigation was developed for a closed solid waste facility in Eastern Nebraska using phased subsurface characterizations. Based on the findings of this prior investigation, a surface based geoelectric survey using electromagnetic induction to measure subsurface conductivity was implemented to delineate the vertical and horizontal extent of buffed waste and subsurface contamination. This technique proved to be a key non-intrusive, cost-effective element in the refinement of the second phase of the hydrogeologic investigation.

Three-dimensional ordinary kriging was used to estimate conductivity values at unsampled locations. These estimates were utilized to prepare a contaminant plume map and a cross section depicting interpreted subsurface features. Pertinent subsurface features were identified by associating a unique range of conductivity values to that of solid waste, saturated and unsaturated soils and possible leachate migrating from the identified disposal areas.