About BT²

Mark R. Huber

P.E., CEO, Principal

Mr. Huber has 19 years of experience in engineering consulting, specializing in the areas of design and bidding documents for civil engineering, soil and groundwater remediation, solid waste management, and water resources. Mark earned his B.S. in Civil Engineering from Iowa State University, and he is a member of the American Society of Civil Engineers.

Tom Bergamini

P.G., Principal

Mr. Bergamini has 25 years of professional and project management experience in environmental consulting with an emphasis in the area of brownfield remediation and redevelopment. Tom holds a B.S. in Natural Resources and an M.S. in Water Resources Management from the University of Wisconsin - Madison. He is a member of the National Ground Water Association and the Wisconsin Ground Water Association.

Ray Tierney

P.G., Principal

Mr. Tierney has 23 years of experience in soil and groundwater investigations, remedial actions, solid waste facility permitting and remediation, environmental site assessments, compliance evaluations, and due diligence for property transactions. Ray earned a B.S in Geology and Geophysics from Boston College, and an M.S. in Water Resources Management from the University of Wisconsin - Madison.

Mark Tusler

P.E., Principal

Mr. Tusler has over 31 years of professional and project management experience in soil and groundwater investigations and remediation; RCRA, CERCLA, and TSCA regulations; and water resources. Mark holds B.S. and M.S. degrees in Civil and Environmental Engineering from the University of Wisconsin - Madison. He is a member of the American Society of Civil Engineers.

Sherren Clark

P.E., P.G., Principal

Ms. Clark has 22 years of engineering consulting experience, applying her combined background in hydrogeology and engineering to contaminated site remediation and solid waste management. Sherren earned a B.A. in Geology from Carleton College and an M.S. in Civil and Environmental Engineering from the University of Wisconsin - Madison. She is a member of the Solid Waste Association of North America and the Wisconsin Ground Water Association.

John B. Tweddale

P.G., CHMM, Principal

Mr. Tweddale has 22 years of experience in site investigations and remediation, real estate due diligence, regulatory compliance, legal support, risk reduction, and agency interaction. John holds a B.S. in Geology from Grand Valley State University, Allendale, Michigan, and an M.S. in Geology from Indiana University. He is a member of the Alliance of Hazardous Materials Professionals and the Wisconsin Ground Water Association.