Gregg Thielman, PE, CFM
Water Resources Business Sector Lead
Gregg leads the firm's water resources sector. Gregg's leadership and mentorship to foster our talented water resources team have shaped HEI's reputation of being leaders in providing water resources solutions for watersheds, government agencies, and communities across the region.
Jeremy McLaughlin, MBA, PE
Director and Transportation and Structures Business Sector Lead
Jeremy serves on HEI's Board of Directors and leads the transportation and structures business sector at HEI. Since first joining the firm out of college, Jeremy has participated in several innovative undertakings, including design of the first RCUTs in the Fargo-Moorhead community and the first designs led by a private consulting team for the interstate in North Dakota. He has helped lead HEI's growth from our first project for the NDDOT in 1997 to now working in states throughout the Upper Midwest on roadways, railroads, and structures.
Brian Fischer, MS
Director and Technology Business Sector Lead
Brian serves on HEI's Board of Directors and founded the technology business sector at HEI when he joined the firm in 2001. Brian saw a need for blending GIS with software development to create solutions that would better serve our clients' unique needs within the natural resources, government, and engineering industries. He continues to lead and innovate in that sector comprised of GIS and software development professionals serving clients nationwide.
Sherwin Wanner, PE
Director and Infrastructure Business Sector Lead
Sherwin serves on HEI's Board of Directors and leads the firm's infrastructure business sector. His experience started in the federal and state management of drinking water regulations and has expanded over his more than 25-year engineering career to leading a variety of projects touching on the many facets of municipal infrastructure solutions.
Mark Aanenson, CWD
Environmental Business Sector Lead for Aquatic Resources Delineation and Permitting
Mark co-leads HEI's environmental business sector using his nearly 30 years of expertise and experience as an environmental scientist. During the warm weather months, you will most likely find Mark in a wetland or field across the Midwest helping our clients navigate their environmental and wetland challenges.
Drew Kessler, PhD
Environmental Business Sector Lead for Water Quality and Agribusiness
Drew co-leads HEI's environmental business sector and manages a variety of projects that serve clients with solutions spanning water resources, water quality, ecology, water modeling, and more. His expertise is specifically related to the use of GIS for analyzing water resources and developing modeling systems that bring science into decision-making processes.