Landfills 6.5 Additional considerations Site remediation Site remediation falls outside the domain of routine landfill operations. However, problems may develop at a closed or current site that require the municipal authority to conduct remedial action.
Remedial actions are almost always more costly than prevention.
A commonly used option in carrying out major site remediation is excavation. Excavation involves the removal of deposited waste from a selected area of the landfill. If landfill space is scarce, this material may be composted to create additional disposal space at the landfill. If the objective is a remedial action in the excavated area, the appropriate corrective action, such as the installation of a leachate barrier or collection system, may be performed and the area refilled, compacted, and resealed. More aggressive remediation technologies are available.