Techniques to recover contaminants or deliver treating material at contaminated sites are described in the report. Few of the 17 described delivery or recovery techniques are in use today. New technologies, used in other industries such as petroleum extraction or mining, show promise for remediation of contaminated sites, but require investigation to affirmation of their suitability for in-situ remediation. The following 17 technologies are described: Colloidal gas aphrons; Hydraulic fracturing; Radial drilling; Ultrasonic methods; Kerfing; Electro-kinetics; Jet slurrying; CO2 injection; Polymer injection; Vapor extraction; Steam stripping; Hot brine injection; In-situ combustion; Radio frequency heating; Cyclic pumping; Soil flushing; Ground freezing. Each description of a technology includes an explanation of the basic processes involved, the optimal site conditions for use, the current status of research, the personnel currently involved in research, and a list of references.