American Society of Civil Engineers, Fellow
Association of Environmental and Engineering Geologists (AEG)
- 2009 Richard H. Jahns Distinguished Lecturer in Engineering Geology (awarded jointly by AEG and the Geological Society of America, Engineering Geology Division)
- Marliave Scholar (1993)
- San Francisco Section Membership Committee Chairman (1991-1993)
- San Francisco Section Short Course Chairman (1995-1996)
British Institution of Civil Engineers, Member
Engineers Without Borders
Geological Society of London, Fellow
Geological Society of America, Engineering Geology Division
International Association of Engineering Geologists
International Landslide Research Group
National Stereoscopic Association
U.S. Society on Dams
Geoengineering Extreme Events Reconnaissance Association
Peer Reviewer: Geotechnique; International Journal of Rock Mechanics and Mining Sciences; Engineering Geology; Felsbau- J. Austrian Society for Geomechanics and Tunneling; Int.Journal of Geoengineering Case Histories
Former Member of: ASCE Geo-Institute Site Characterization and Engineering Geology Committee; Editorial Board of International Journal of Geoengineering Case Histories; Editorial Board Felsbau - Journal of the Austrian Society for Geomechanics and Tunneling; Academy of Geo-Professionals (of the ASCE)