Find a GeoprofessionalGeoprofessional firms provide geotechnical, geologic, environmental, construction materials engineering and testing, and related professional services. Need geoprofessional guidance? Geoprofessional firms join GBA to learn how to delight their clients. Enter your search criteria in the fields below to find a geoprofessional. If you'd like to browse a list of our firms instead, please go to our Member Firm List. Find out more about "What Is a Geoprofessional" and learn why you should hire a geoprofessional. For GBA-Member Firms: Not finding your own location or need to update your listing? Click here. Looking for individual members or employees of Member Firms? Click here (For members only). If you are having trouble finding what you want, click here for assistance