Staff
President/CEO
Ralph E. Lindner, PE, founded the company in 1988 and has provided exceptional engineering services and company leadership since then. He focuses on geotechnical engineering and materials testing services on sites with difficult and complex conditions. Ralph has over 40 years o experience in geotechnical engineering and report preparation and on-site observations during subgrade preparation, excavation and foundation construction, including evaluating and providing recommendations for repair where the subgrade or foundation soils have resulted in distress to pavements or structures.
General Manager
Dan Hanson, PE, started with GeoTek in 1989, and has been the company's General Manager of the firm since 2005. He has over 35 years of experience in environmental assessment, project management and design, and remediation, as well as geotechnical engineering. As General Manager, Dan’s primary responsibility is to coordinate and integrate various engineering services performed by our experienced professional staff, and to provide practical and economical solutions for our customers.
Geotechnical Manager
Jared Haskins, PE, joined
GeoTek in 2007. He currently manages the geotechnical unit. Jared works primarily in the geotechnical and
construction materials areas of the company.
He is responsible for supervising and scheduling engineers and drill
crews, and for providing geotechnical recommendations for earthwork operations,
foundations and structural components. He
works closely with the engineers to provide cost-effective solutions for
clients.
Materials Unit Manager
Shane Lindner joined
GeoTek in 1994. He currently 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. With 30+ years of experience in various roles
at GeoTek, he brings a wealth of knowledge to ensure our customer’s needs are
met and their projects are successful.
Controller
Kendra
McGuire is the controller at GeoTek and joined GeoTek in 2022. She graduated from the University of South
Dakota with a Bachelor of Science degree in accounting and has worked in
several different areas of accounting throughout her career, including
manufacturing, healthcare and engineering.
Kendra is not only responsible for overseeing the accounting operations
of the company, but also guiding the financial decisions by establishing,
monitoring, and insuring policies and internal controls are being
followed.
Iowa Environmental Supervisor
Keith
DeLange, EIT, is the Iowa Environmental Unit Manager and brings over 35 years
of experience to his position. Keith
oversees petroleum and other environmental assessment work in Iowa. He has
experience with environmental assessment and remediation projects as an Iowa
Certified Groundwater Professional. Keith also oversees groundwater monitoring at
several active RCRA Subtitle D landfills, and is the project manager for an EPA
Superfund site.
Industrial Hygiene & Environmental Assessment Unit Manager
Jerry Zutz, PE, began
his career with the company in 1990. He currently is the industrial hygiene and
environmental assessment unit manager. From Phase I and Phase II Environmental
Site Assessments, Brownfields assessments, SPCC plans, asbestos surveys and
consulting, to petroleum assessment and remediation, Jerry has the knowledge
and experience for timely and successful project completion.
Senior Project Manager/Certified Industrial Hygienist
Jason
Cook, CIH, is a senior project manager on industrial hygiene, indoor air
quality, and environmental assessment projects. As a Certified Industrial
Hygienist, he assists business and others in industry to evaluate employee
exposure to workplace hazards, and makes recommendations for practical
solutions to ensure worker safety and OSHA compliance. Jason has experience in
NPDES program industrial waste water monitoring using ISCO automatic sampling
equipment. Jason is also GeoTek’s
corporate health and safety officer and brings over 30 years of experience to
the team.
Senior Project Manager
Matt
Thompson, PE, is a senior project manager with over 20 years of experience as a
geotechnical and construction materials testing (CMT) consultant. Matt has
experience performing laboratory testing related to soils, aggregates, asphalt
and concrete, as well as, observing pavement subgrades, testing fly-ash and
cement stabilized soils, and observing reinforcement for both reinforced
concrete and masonry structures. His primary
responsibilities also include working with GeoTek’s residential developers and contractors.
Project Manager
Shawn Maassen, PE
joined GeoTek in 2013. Shawn has a diverse background that includes providing
geotechnical recommendations for earthwork operations, foundations and
structural components. Shawn performs field
observations and regularly provides recommendations for complex
conditions. He has relevant experience
working with contractors and design teams to find practical solutions for their
projects.
Project Manager / Materials Lab Supervisor
Nick Bierle, PE joined GeoTek in 2014. He is currently the materials lab supervisor and is responsible for maintaining quality testing services both in the field and in the lab. He coordinates the schedules of field engineers and technicians to meet project testing requirements and specifications effectively. His other responsibilities include providing geotechnical recommendations for earthwork operations, foundations and structural components.
