Gary Griggs is Professor of Earth Sciences and Director of the Institute of Marine Sciences at the University of California, Santa Cruz. He is coauthor, with John A. Gilchrist, of "Geologic Hazards: Resources and Land Use Planning "(1983) and "The Earth and Land Use Planning "(1977). Kiki Patsch is Post-Graduate Researcher in the Department of Earth Sciences at the University of California at Santa Cruz. Lauret Savoy is Professor of Geology and Environmental Studies at Mount Holyoke College.