Environmental Specialties International, Inc. (ESI) is a leading installer of geosynthetic liner materials for environmental containment applications in the United States. Since its founding in 1996, ESI has installed 2.5 BILLION square feet of geosynthetic materials (>55,000 acres). It now employs more than 400 field technicians stationed throughout the United States – making the company the largest geosynthetic installer in the country. ESI is also one of the largest suppliers of geomembranes, geocomposites, geotextiles, geocomposite clay liners, and affiliated materials.