1. Earth Science Services LLC, P.O. Box 720438, Oklahoma City, OK 73172-0438.
2. Rowan Univ., Dept. of Civil and Environmental Engineering, 201 Mullica Hill Rd., Glassboro NJ 08028.
3. HQ AFCEE/ER, 3207 N. Road, Building 532, Brooks Air Force Base, San Antonio, TX 78235-5363.