Processes and methods relating to treating contaminants and collecting
desired substances from a zone of interest using subterranean collection and containment
barriers. Tubular casings having interlock structures are used to create subterranean
barriers for containing and treating buried waste and its effluents. The subterranean
barrier includes an effluent collection system. Treatment solutions provided to
the zone of interest pass therethrough and are collected by the barrier and treated
or recovered, allowing on-site remediation. Barrier components may be used to in
the treatment by collecting or removing contaminants or other materials from the
zone of interest.