GSI Members
Geosynthetic Institute

GSI Members by Focus Group

(As of April, 2011)

Government Agencies	Owner/Operator	Consultant and Test labs		Resin Producers	Installers/Contractors
U.S. EPA U.S. FHwA U.S. Corps Engrs. GSI-Korea GSI-Taiwan BTRI-India	EnviroSource Inc. Waste Mgmt., Inc. Republic Services	AECOM Golder Geosyntec NTH TRI CEC GeoTesting Express GEI	CTI & Assoc. Advance Earth Sciences Vector Engrg. Weaver Boos Jones Edmunds Mannik & Smith	Chevron Phillips DuPont LyondellBasell Kuraray (EVAL) BASF	CARPI CETCO Contracting Aquatan + (GSI manufacturers)

Geomembrane		Geotextile	Drainage Geocomposites	Geogrid	GCL
GSE-World Agru NAUE Solmax GSE Chile, S.A. Atarfil, S.L. Firestone GSE-Europe	Raven Industries Carlisle EPI Aquatan PRS Mediterranean Ltd. Plasticos Agricolas In-Line Plastics	Colbond TenCate Huesker NAUE Propex Fiberweb Syntec GSE Afitex-Texel	GSE Colbond TenCate Syntec Tensar NAUE Fiberweb Aquatan	Tensar Colbond Syntec TenCate Huesker NAUE Fiberweb	GSE CETCO Huesker NAUE

Associate Members

Delaware Solid Waste Authority
Nebraska DEQ
New York DEC
New Jersey DEP
Maine DEP
New York DOT
California Water Res. Control Board
Pennsylvania DEP
Florida DEP
U.S. BuRec
Michigan DEQ
United Kingdom Environment Agency
Florida DOT
National Resource Conservation Service
Virginia DEQ
Massachusetts DEP
Philadelphia Water Department
Oak Ridge National Laboratory