GPI- GeoProfessional Innovation Corporation Share: ManufacturingBusiness Services GPI- GeoProfessional Innovation Corporation Visit Website 6 O' Donnell Road Pullman, WA 99163 (509) 339-2000 (509) 339-2001 (fax) About About Providing geoprofessional services, comprised of three dynamic, complementary service lines – geotechnical engineering, environmental consulting, and construction testing/inspection.
