Our team is passionate, skilled and ready to go above and beyond for you.

Aaron Andrews

GIS Group Head

Mary K. Atkins, P.E., CPESC, LEED AP

Vice President

Jeff Ballard, P.E.

Senior Project Manager

Jacob A. Barker, CPESC

Environmental Services Assistant Group Head

Jonathan E. Borgers, P.E.

Senior Project Manager

Ryan K. Brauen, P.E.

Vice President and Ohio Office Manager

Nathan Brune, P.E.

Project Manager

Katie Castro Jackson, P.E.

Project Manager

Nancy Cho, CPESC

Senior Environmental Services Project Manager

Eric E. Davis

Ohio Business Development Representative

Monte Gardner

Construction Services Senior Project Manager

Andrew D. Gordon, P.E.

Senior Project Manager

Justin Frazier, P.E.

Senior Project Manager and Professional Land Surveyor

Tyler G. Graves

Business Development Group Head

Tyler Hammerle, P.E.

Project Manager

Amy Harvell, CHMM, RPC

Environmental Services Group Head

Robert W. Holden, II, Ph.D., P.E., BCEE

Senior Vice President and Wastewater Group Head

Josh Hood, P.E.

Project Manager

Aaron Hutton, P.E.

Vice President and Fort Wayne Office Manager

Bridget Ingram, P.E.

Project Manager

Jessie Lestinsky

Project Manager and Assistant Fort Wayne Office Manager

Dylan L. Lambermont, P.E., LEED AP

Executive Vice President and Drinking Water Group Head

Jen Landis

Employee Engagement Coordinator

Lori Latham

Business Development Representative

David Lauer, PLS

Professional Land Surveyor

William J. Leber, P.E., LEED AP

Stormwater Group Head and Vice President of IT

Jason Mackiewicz

IT Infrastructure Manager

Kasey Marley, P.E.

Project Manager

Melissa A. Mitchell, MSHRM

Senior Vice President of Administration

Wayne C. Moore, P.E.

Electrical Group Head

Josh Morris, P.E., MBA

Senior Project Manager

Mike Nelson

Senior CAD Manager

Susan Nelson, APR

Marketing Group Head

Brian Price, PMP

Instrumentation and Controls Group Head

Jim Purtee, CPA

Controller

Loys Rees, P.E.

Project Manager

Brad A. Robertson

Field Services Manager

Gary L. Ruston, P.E., BCEE

Technical Services Director

Linda J. Sanders

Business Development Representative

Rebecca Scarbrough, P.E.

Ohio Project Manager

Brent A. Siebenthal, P.E.

President

Adam Sitka, P.E.

Project Manager

Andrew Thompson, P.E.

Senior Project Engineer

Derek Urban, P.E.

Senior Project Manager

Kurt Wanninger

Senior Project Manager

Marty A. Wessler, P.E.

CEO

Jody Williams

Construction Services Group Head

Kate Ziino, P.E.

Wastewater Assistant Group Head