1. FHWA Resource Center, Suite 600, 4749 Lincoln Mall Drive, Matteson, IL 60443.
2. Geotechnical Engineering Research Laboratory, Louisiana Transportation Research Center, Louisiana State University, 4101 Gourrier Avenue, Baton Rouge, LA 70808.
3. Geotechnical Engineering, Department of Civil and Environmental Engineering, Lehigh University, 326 STEPS Building, 1 West Packer Avenue, Bethlehem, PA 18015.
4. Louisiana Department of Transportation and Development, 1201 Capitol Access Road, Baton Rouge, LA 70802.