Mr. Houlihan is a Principal with GeoSyntec Consultants in Columbia, Maryland. He has over 16 years of experience in the design of municipal and hazardous waste landfills, including design and performance evaluations of closure systems, design and construction of alternative cover systems, contract research related to bioreactors and landfill liner system performance, long-term geotechnical stability of landfills, forensic analyses of liner and cover systems, and monitoring of the performance of liner and cover systems. In the past several years, the focus of his practice has been on the development of designs for alternative covers in both wet and dry climates, as well as the application of bioreactor technology at municipal solid waste landfills. He is currently the project manager for the Environmental Research and Education Foundation (EREF) study "Evaluation of Post-Closure Care at MSW Landfills" and is the lead engineer for the design of an evapotranspirative alternative cover at the Welsh Road Landfill Superfund Site in Pennsylvania. In addition, Mr. Houlihan is an active member of the ITRC Alternative Landfill Technologies Team.