Kenneth R. Johnston

Ken, a Principal, currently serves as GZA’s Chief Administrative Officer and serves on the Executive Committee.  Prior to his current role, he served as GZA’s Director of Risk Management, responsible for risk management, contracts, and real estate and, before that, Vice President of Operations.  An 18-year employee of the firm, he is responsible for all administrative tasks facing GZA including all of our real estate interests, purchasing, and overseeing the marketing department.  He works very closely with the CEO on many administrative and operational issues as they arise.

Jeffrey D. Rowell, P.E.

Jeff Rowell has been with GZA for over 23 years and he is an Associate Principal in GZA’s Bedford, New Hampshire office.  He also leads the Institutional Client Focus Group.

His areas of specialization include property condition assessments, asbestos, lead and mold management, site investigations, and remedial design and construction support services. 

He received his Bachelor of Science in Civil Engineering and a Master’s degree in Geotechnical/Environmental Engineering from the University of Massachusetts – Lowell.

Robert J. Palermo, P.E.

Mr. Palermo has been with GZA for over 36 years, during which time he has been involved in some of the largest and most complex projects ever completed by GZA across the country.  As GZA’s client sector lead on Infrastructure projects and the technical practice lead for underground projects, he brings to bear his 40 years of engineering experience to conventional Design-Bid Build, Design-Build and Public Private Partnership projects. 

Anders B. Bjarngard, P.E.

Anders Bjarngard started with GZA in 1984 after completing his Bachelor of Science in Civil Engineering from the University of Massachusetts at Amherst.  In 1987, he took leave to complete his Master of Science in Geotechnical Engineering from Tufts University and rejoined GZA in 1989.  Since that time he has worked in several of GZA’s civil engineering disciplines but has focused primarily on geotechnical engineering, dam engineering and most recently waterfront engineering.

David M. Winslow, Ph.D., P.G.

Dr. Winslow has been with GZA since 2004 and is a Principal and Senior Vice President.  He presently manages the Northern New Jersey district office and provides senior management of environmental investigation and remediation projects.  He also serves as the co-lead for the Environmental Core Services Group within GZA. 

Paul G. Davis, Ph.D., PWS, CPSS

Paul Davis is a Senior Vice President at GZA GeoEnvironmental Inc., and Principal Environmental Scientist, based in the Springfield, Massachusetts.  He serves as leader of the Natural Resources & Permitting Technical Practice and Ecological Services Client Sector for GZA, which includes over 40 professional scientists.  

John C. Murphy, CCM, CHMM

John C. Murphy, CCM, CHMM, Senior Principal, is a resident of Derry, NH and has been with GZA for more than 25 years.  He currently serves as a member of the company's Operations Team and is a member of the Executive Team.  His areas of specialization include construction management, cost estimating, facility closures/demolition, hazardous materials management and site remediation.

Terese M. Kwiatkowski, P.E.

Ms. Kwiatkowski has 30 years of experience as a geotechnical engineer on a wide variety of projects that include bridges, highways, tunnels, buildings and energy transmission line and substation and power plant upgrade and rehabilitation projects. She also has extensive experience with alternate delivery methods of projects, including design-build (DB), construction manager/general contractor (CM/GC), and public private partnerships (P3s). 

James J. Clark, P.E., LEP

James Clark has been with GZA for over 23 years and is a Senior Principal.   He is a leader in our environmental remediation practice area.  He also serves on the company’s Board of Directors and, as such participates in the in the leadership and direction of the Company.


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