Water Treatment Plant
Yankton, SD | Government
View project sourcePublic engineering firm profile
Sioux Falls, SD
Common Sense, Practical & Economical Solutions
GeoTek Engineering & Testing Services, Inc. is a privately owned geotechnical and environmental consulting firm founded in 1988 and based in Sioux Falls, South Dakota. Serving clients across a five-state region (South Dakota, North Dakota, Iowa, Minnesota, and Nebraska), GeoTek provides geotechnical engineering, construction materials testing and inspection, environmental consulting, and industrial hygiene services. The team includes registered professional engineers, certified professional geologists, certified industrial hygienists, experienced drill crews, technicians, and scientists with a track record on projects ranging from university arenas and school fine arts centers to water treatment plants, medical centers, grain storage facilities, and government buildings.
Geotechnical engineering services for a wide range of construction projects across the five-state region, with expertise in subsurface investigation, earthwork evaluation, foundation design recommendations, and on-site observations during subgrade preparation, excavation, and foundation construction.
Construction materials testing and inspection performed at the project site or in-house laboratory to ensure project specifications and governing building codes are met.
Environmental consulting covering a broad spectrum of services including indoor air quality assessment, emergency spill response, and site environmental evaluation.
Industrial hygiene services provided by certified industrial hygienists on staff.
Yankton, SD | Government
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View project sourcePresident / CEO
PE
Ralph E. Lindner founded GeoTek in 1988 and has provided engineering leadership since then. He specializes in geotechnical engineering and materials testing on sites with difficult and complex conditions, and has over 40 years of experience in geotechnical engineering, report preparation, and on-site observations during subgrade preparation, excavation, and foundation construction.
General Manager
PE
Dan Hanson joined GeoTek in 1989 and has served as General Manager since 2005. He has over 35 years of experience in environmental assessment, project management, design, and remediation, as well as geotechnical engineering. As General Manager, Dan coordinates and integrates GeoTek engineering services and focuses on delivering practical and economical solutions.
Geotechnical Manager
PE
Jared Haskins joined GeoTek in 2007 and manages the geotechnical unit. He works primarily in geotechnical and construction materials areas, is responsible for supervising and scheduling engineers and drill crews, and provides geotechnical recommendations for earthwork operations, foundations, and structural components.
Materials Unit Manager
Shane Lindner joined GeoTek in 1994 and manages the construction materials testing unit. He is responsible for communication with design teams, general contractors, and subcontractors, as well as planning, coordinating, and directing construction materials and quality assurance testing in accordance with project plans and specifications.