"This document emphasizes the special characteristics of solid waste management as they bear on cover systems. Cover systems typically consist of two to four layers of soil and other materials and resemble a highway pavement system in many respects. This similarity facilitates the preparation and use of construction and maintenance specifications. Example specifications are in the appendices of the full report. Criteria and methods are provided for engineering analyses of percolation, erosion, stability, flooding, freezing, and settlement. Techniques are available for compensation for each of these threats, again using recognized design and construction methods. Finally, guidance is included on methods of maintenance and repair over the unusually long design life of a solid and hazardous waste disposal facility."