ACEC (formerly CELSOC)
American Council of Engineering Companies

ASFE
Association of Firms Practicing in the Geosciences

ASCE
American Society of Civil Engineers

GeoInstitute of ASCE

ACEC
American Consulting Engineers Council

ASTM
American Society for Testing and Materials

CGEA
California Geotechnical Engineers Association

AEG
Association of Environmental and Engineering Geologists