Heather M. Summers
Erin Palko, P.G., LSRP
Ms. Erin Palko is a licensed geologist and site remediation professional with 20 years of consulting experience in the environmental field. Her primary focus is on soil and groundwater investigations and remediation, work at active chemical and manufacturing industrial sites, due diligence, and site investigation and remediation.
Sara M. Barbuto
Andrew J. Halmstad, P.E.
Frank W. Spada
Glenn Esler
Manon Tanner-Dave
Stephen Sherman, P.G.
Michael J. Martin, P.E.
Mr. Mike Martin is a professional engineer with 22 years of experience in civil and environmental engineering. He specializes in analysis of soil, groundwater, and stormwater treatment alternatives, cost estimation, and design and implementation of remedial actions, from pilot- to full-scale systems. Mr. Martin has substantial experience developing cost-effective alternatives for site remediation, and litigation and property transfer projects.
Jane L. Sund, P.E.
Brooke Redding
Grace Chang, Ph.D.
Dr. Grace Chang is a consultant in limnology and oceanography. She has more than 20 years of experience performing site assessments, including hydrodynamics, sediment transport, particle dynamics, and marine and hydrokinetic energy. Dr. Chang has managed programs involving field operations, data processing and analysis, and numerical modeling for environmental characterization, and scientific research.
Steven O. Helgen
Mr. Steve Helgen is a consultant specializing in geochemistry, hydrogeology, and environmental forensics. He has more than 20 years of experience in contaminant fate and transport, geochemical fingerprinting, and apportionment in complex, multiparty environmental disputes involving sediments, groundwater, and industrial facilities. Mr. Helgen has provided expert testimony in both state and federal courts.
Damian V. Preziosi
Mr. Damian V. Preziosi is an environmental scientist with more than 20 years of experience evaluating potential ecological and human health risks associated with exposures to physical, chemical, and biological hazards. He supports clients in North America, South America, Europe, and Asia for work in the energy, chemical, and mining sectors.
Todd Martin, P.E.
Mr. Todd Martin is a professional engineer and hydrogeochemist. He has 22 years of experience specializing in environmental engineering, the transport and fate of inorganic and organic chemicals in the environment, and analysis of remediation alternatives. Mr. Martin’s background encompasses aqueous and soil geochemistry, hydrogeology, hydrodynamics and sediment transport, and engineering design and cost analysis.
David Livermore, R.G., L.H.G., CWRE
Mr. David Livermore is a principal hydrogeologist and geochemist with 30 years of experience in solving complex earth science problems centered on the interaction of hydrogeologic, geologic, and atmospheric systems. He is a registered professional geologist in six states and a licensed hydrogeologist in Washington.