GeoClay is a reinforced, needle-punched, geosynthetic clay liner (GCL) comprised of a uniform layer of self-healing and self-sealing, granular bentonite that is encapsulated between two nonwoven geotextiles. It is intended for moderate to steep slopes and moderate to high load applications. At more than 19-ft wide, it is the widest GCL in the industry. It is compatible with typical MSW leachates and mining solutions. GeoClay has reduced CQA time and testing costs. Applications include: primary or secondary containment in composite landfill cells and closures, mining leach pads, tailing impoundments and reclamation, and pond and lagoon application.