Company profile Tubbs Geosciences was established in 1994 by Donald W. Tubbs, a geomorphologist and engineering geologist with 50 years experience evaluating geologic conditions and processes, and their relationship to site development and land use changes.   We provide consulting services in the geosciences and, through our teaming relationships, related engineering and environmental services. Our facilities include an extensive regional geological and geotechnical library, computer hardware and software for hydrological and geotechnical analyses, and Geographic Information Systems capabilities.   We are currently involved in projects in the Pacific Northwest and in the Philippines, and welcome teaming opportunities for projects in the United States and internationally.