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.

John C. Osborne, PG

John Osborne has been with GZA for over 22 years as a Principal Hydrogeologist and District Manager for GZA’s Milwaukee, Wisconsin operations.   He has provided senior management and technical review of a large diversity of hydrogeologic, environmental, geotechnical and groundwater resource projects implemented by teams of engineers and scientists at GZA.    His areas of specialization have included geological and hydrogeological site characterization and development of conceptual site models (CSMs) used in unraveling the complexities of contaminant migration and the selection of remedial s

Patrick F. Sheehan, P.E.

Patrick Sheehan has been with GZA for over 26 years and is a Senior Principal.  He is presently a member of the Operations Team, a member of the Executive Team and is a member of the company's Board of Directors and as such, participates in the leadership and direction of the Company.  He previously managed the Metro Boston offices and continues to provides senior management of environmental site investigation, remediation, building services, and construction management projects.

Christopher Snow

Chris Snow has been with GZA for over 17 years and is an Associate Principal and Vice President. He presently manages the Portland satellite office and provides senior management of Geotechnical and Marine projects. He also serves as corporate co- lead of Geotechnical Core services, planning and executing strategies for  development of geotechnical services throughout GZA.

Albert J. Ricciardelli, P.E., LSP

Al Ricciardelli brings a strong mix of engineering and management skills to helping our clients to address their environmental remediation challenges.  During his 25+ years at GZA he has assisted clients on sites across the country, from California to Maine, and under both state and federal regulatory programs.  He has assisted clients in negotiating cost-effective RODs under CERCLA and has served as Project Coordinator for Superfund sites in Region 1.  He is a Licensed Site Professional in MA and a Professional Engineer in CA, KY and MA. 

Steven R. Lamb, CGP

A resident of Concord, NH, Steve is a licensed professional geologist and certified groundwater professional.  His areas of specialization are groundwater and soil remediation, groundwater contamination and investigations, surface water hydrology, groundwater supply investigations, environmental site assessments and septic system evaluations.

He earned his Bachelor of Science Degree in Hydrology and a Master of Science in Civil Engineering from the University of New Hampshire. 

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