1. Associate Professor and Director, Soil Erosion Research Laboratory, Civil, Construction and Environmental Engineering, San Diego State Univ., 5500 Campanile Dr., San Diego, CA 92182-1324 (corresponding author).
2. Graduate Research Assistant, Dept. of Civil, Construction and Environmental Engineering, San Diego State Univ., 5500 Campanile Dr., San Diego, CA 92182-1324.
3. Research Ecologist/Director, Filtrexx International, 35481 Grafton Eastern Rd, Grafton, OH 44044.
4. Research Engineer II, Driftmier Engineering Center, Univ. of Georgia, Room 206, Athens, GA 30602.