HARI SHARMA, PhD, PE, GE, is a Principal with GeoSyntec Consultants specializing in geoenvironmental and geotechnical engineering. He is the author of Waste Containment Systems and coauthor of Pile Foundations in Engineering Practice (both from Wiley). He has authored more than thirty-five research papers and has more than thirty years of experience in engineering practice.

KRISHNA REDDY, PhD, PE, is Associate Professor of Civil and Environmental Engineering at the University of Illinois, Chicago. He has earned numerous awards and honors for both his teaching and his research. He teaches geoenvironmental engineering courses, such as environmental geotechnology, environmental remediation, and landfill design, among others. He is a registered professional engineer in the State of Illinois.