Sponsored by the Geoenvironmental Engineering Committee of the Technical Coordination Council of the Geo-Institute of ASCEGeoenvironmental Engineering: Site Contaminant Characterization, Containment Facilities, Solid Waste Materials, and Contaminated Ground Interventions, MOP 159, provides an overview of a variety of aspects of geoenvironmental engineering, outlining design procedures and recommendations in engineering practice where appropriate.Topics includeWaste and site characterization,Waste material properties,Containment systems,Mine waste geotechnics,Contaminated ground interventions, andBarriers.MOP 159 aims to be a consensus document that provides a concise state of the practice for geoenvironmental engineering practitioners.