Brian Wesolowski is a civil engineer with eleven years of industry experience. He began as an intern at GHA in 2007 and joined the firm full-time following graduation in 2010. Brian’s work has been concentrated mainly on municipal engineering and construction phase services. Brian is a highly accomplished design engineer with numerous successful water main and sewer projects. He works closely with clients to design capital improvements and coordinates with contractors to ensure quality results. Brian also often assists with addressing issues that arise during construction.

K. David Marquardt is a Senior Construction Engineer with over 30 years of industry experience, with an emphasis on infrastructure improvements. As the Director of Construction and Survey, Dave is responsible for coordinating and scheduling projects with clients and other Divisions within the firm and provides guidance and support to field staff. He has served as a field engineer for a variety of municipal and private sector projects with responsibility for managing all phases of the construction project. Prior to joining GHA, Dave worked for IDOT in the Bureau of Construction on complex utility, road, and bridge reconstruction projects.

Leo Morand first joined GHA in 2001 as an intern and after receiving his degree in 2002, he became a full-time project engineer focusing primarily on municipal engineering, site design, construction engineering, and maintenance planning. Leo manages projects directly for numerous government agencies that include municipal capital improvement projects and several school districts whose improvement projects have been lead by Leo for years.

Lucas Deferville is a Senior Construction Engineer with over 18 years of experience with an emphasis on construction engineering and contract administration. Lucas has been with GHA for 22 years as a full-time employee and for four years prior as an intern. As the Assistant Director of Construction, Mr. Deferville oversees construction phase operations and is responsible for managing all phases of Phase III.

Mei Zhu is a Registered Professional Engineer and a Certified Floodplain Manager practicing for 25 years as a Civil Engineer. Mei has specialized in site design and regulatory permitting, floodplain and stormwater management, hydrologic and hydraulic analysis, stream restoration, existing drainage assessment and remediation, green infrastructure practices, regulatory ordinance enforcement, and soil erosion and sediment control. Mei has been with GHA since 2000.