Unanswered questions can stop your project in its tracks. The GMA Techline puts you back in the fast lane. GMA Techline is your resource for technical questions about geosynthetics provided by ATA's Geosynthetic Materials Association. Don't second guess, get expert advice. E-mail GMAtechline@textiles.org for fast, free and direct answers to your technical questions. GMAtechline@textiles.org