• American Society of Civil Engineers
• American Society of Civil Engineers, Oregon Section, Geotechnical Group
• American Society of Civil Engineers, Seattle Section
• Association of Engineering Geologist (AEG) Washington Section
• Deep Foundations Institute (DFI)
• Structural Engineers Association of Washington (SEAW)
• Vancouver Geotechnical Society (VGS)
• WSDOT Geotechnical Design Manual Dec. 2006
• WSDOT Geotechnical Home Page