Professional Registrations and Affiliations

Registered Professional Civil Engineer in California and Oregon (current as of 2025). First registration was in State of California 1989.  Previous States of registration, which are now expired, included: Arizona, Montana, Wyoming, New Mexico, Kansas, Florida, Pennsylvania and Washington.

Registered Geotechnical Engineer in Oregon (current as of 2025).

American Society of Civil Engineers (and the associated Geo-Institute) for over 39 years (expired in 2025).

American Society for Testing and Materials (member of committee D35 for > 25 years – retired from this society in 2017).

North American Geosynthetics Society and International Geosynthetics Society (current as of 2025).