Geosynthetic Institute

TRI Environmental Inc.

Contact Information

Sam R. Allen

Vice President

TRI/Environmental Inc.

9063 Bee Caves Road

Austin, TX 78733-6201

Phone: (512) 263-2101

800-880-8378 ext. 138

Fax: (512) 263-2558

(512) 263-2387

e-mail: Sallen@tri-env.com

C. Joel Sprague

Senior Engineer

TRI/Environmental, Inc.

P. O. Box 9191

Greenville, NC 29604

Phone: 864-242-2220

Fax: 864-242-3107

e-mail: jsprague@tri-env.com

For more information visit their home page: TRI Environmental Inc.