Environmental Specialties International, Inc. is the largest contracted installer of geosynthetic lining materials in the United States. Environmental Specialties has installed more than 2.5 billion square feet of geosynthetic liners, involving more than 3,000 projects in all 50 states since 1996. ESI provides geosynthetic liner materials and installation services to the power, waste, oil and gas, mining, water, and other environmentally responsible industries. Environmental Specialties is also a supplier and installer of high-density polyethylene (HDPE) plastic pipe systems for the transportation of liquids and gas in related industries.