1. Principal, Schnabel Engineering, Inc., 510 East Gay Street, West Chester, PA 19380
2. Associate, Schnabel Engineering, Inc., 510 East Gay Street, West Chester, PA 19380
3. Principal, Geosystems, Inc., P.O. Box 237, Venetia, PA 15367
4. President, DBM Contractors, 1220 S. 356th, P.O. Box 6139, Federal Way, WA 98083