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Elisabeth Hawley, P.E.

Elisabeth Hawley is a Senior Consultant based in northern California with 16 years of experience advancing environmental remediation projects involving site characterization, fate and transport, remediation, strategies to achieve site…

Michael Hayes, P.E.

Michael Hayes is a Principal Civil Engineer based in Pennsylvania with more than 25 years of experience focused on water and wastewater treatment; pumping systems and pump stations; remediation of…

Anica Haynes

Anica Haynes is a Principal Environmental Permitting and Planning Practice Lead based in Louisiana with more than 20 years of experience focused on technical and project management, primarily in the…

Tamara Hebeler, P.E.

Tamara Hebeler is a Principal Engineer based in Georgia with more than 20 years of experience focused on engineering design for several large geotechnical, remediation, and waste management projects including…

Dan Heidenreich, CPG

Dan Heidenreich is a Senior Consultant Geologist based in Colorado with more than 20 years of experience focused on GIS data management and mapping. He also conducts 3D site visualizations,…

J. Chris Herin, P.G.

J. Chris Herin is a Senior Principal Hydrogeologist practitioner in the field of environmental risk management and minimization based in Florida with more than 30 years of environmental consulting experience,…

Nathan Higgerson

Nathan Higgerson is a Principal based in Missouri with more than 18 years of experience in both the consulting and private industries focused on fossil fuel and renewable power, mining,…

Dave Himmelheber, Ph.D., P.E.

Dave Himmelheber is a Principal Engineer based in New Jersey with more than 17 years of experience with contaminated sediments focused on site investigations and remedial design for complex, multiple…

Brian Hitchens, P.G., CHG

Brian Hitchens is a Senior Principal Hydrogeologist based in California with more than 20 years of experience focused on the assessment and remediation of polychlorinated biphenyls, chlorinated solvents, and heavy…

Beau Hodge, P.G.

Beau Hodge is a Senior Principal Geologist based in North Carolina with more than 25 years of experience focused on environmental site investigation and remediation with a focus on recalcitrant…

John Hollar, P.E.

John Hollar is a Principal Civil and Environmental Engineer based in Georgia with more than 25 years of experience advising a variety of industrial, power, and government clients in the…

George Hollerbach, P.E., BCEE, CSP

George Hollerbach is a Senior Principal Engineer based in New Jersey with more than 35 years of experience focused on water and wastewater, remediation, construction management, environmental health and safety…

Terence Holman, Ph.D., P.E.

Terry Holman is a Senior Principal Engineer with more than 25 years of professional experience focused on the areas of: geotechnical and geostructural engineering; design; construction management; specialty geotechnical construction;…

Michael Houlihan, P.E.

Michael Houlihan is a Senior Principal Engineer based in Maryland with more than 30 years of experience focused on industrial and municipal waste management, waste containment system design, geotechnical engineering,…

Yvana Hrovat, P.E.

Yvana Hrovat, P.E. is a Principal Engineer based in California with more than 16 years of professional experience as a project manager, water resources engineer, environmental scientist and compliance analyst…

Christopher Hunt, Ph.D., P.E., G.E.

Christopher Hunt is a Senior Principal Geotechnical Engineer based in California with more than 20 years of experience focused on geotechnical and geoenvironmental projects.

Amer Hussain, P.E.

Amer Hussain is a Principal Environmental Engineer based in California with more than 25 years of experience focused on groundwater assessment and remediation, regulatory compliance, and permitting. He specializes in…

Mehmet Iscimen, P.E., CPESC

Mehmet Iscimen is a Principal Engineer based in Georgia with more than 17 years of professional experience focused on the areas of geotechnical and geoenvironmental engineering, solid waste disposal facility…

Krzysztof S. Jesionek, P.E.

Krzysztof Jesionek is a Principal Environmental Engineer based in California with more than 35 years of experience focused on solid and hazardous waste management, including facility design and closure, permitting,…

Hong Jin, Ph.D.

Dr. Hong Jin is a Senior Professional based in Texas with more than 13 years of oil and gas industry experience, working for firms such as ConocoPhillips, Phillips 66, and…

Jill Johnson, P.G.

Jill Johnson is a Principal Hydrogeologist based in Florida with more than 20 years of experience focused on environmental projects, including electric transmission life cycle services, groundwater monitoring and reporting,…

Mark Johnson

Mark Johnson is a Principal Consultant based in Maryland with more than 23 years of experience focused on transactional support, site investigation and remediation, subsurface vapor intrusion to indoor air,…

Ronald Johnson, P.E., G.E.

Ronald Johnson is a Senior Principal Geotechnical Engineer based in California who has been focused on the most seismically active areas of the United States throughout his career. He has…

Marty Jones

Marty Jones is a Principal Environmental Scientist based in South Carolina with more than 35 years of professional experience focused on air quality permitting and compliance, environmental compliance auditing, due…

Todd Kafka, P.G.

Todd Kafka is a Principal Hydrogeologist based in Florida with more than 23 years of professional experience focused on site assessment, remediation, and hydrogeological investigations for industrial, state, and federal…

Michael Kavanaugh, Ph.D., P.E., BCEE, NAE

Mike Kavanaugh is a Senior Principal Chemical and Environmental Engineer based in California with more than 40 years of consulting experience focused on water quality management, water treatment, and the…

Seth Kellogg, P.G.

Seth Kellogg is a Principal Geologist based in New Jersey with 25 years of experience in the areas of project management, project planning, remedial investigation, feasibility study, remedial design, data…

Timothy Kelly, Ph.D., P.E

Tim Kelly is a Senior Engineer based in Virginia with more than 27 years of experience in environmental engineering, providing technical review, client development, and project management for power, solid…

Jason Kerstiens, P.E.

Jason Kerstiens is a Principal Civil and Environmental Engineer with over 19 years of experience providing process engineering, regulatory compliance, water resource optimization, and strategic planning services to industrial, municipal,…

Adam King, P.E.

Adam King is a Principal Civil Engineer based in California with more than 15 years of environmental consulting experience focused on the assessment and remediation of impacted soil, soil vapor,…

Peter King, P.E., LSP, LEP

Pete King is a Principal Engineer based in New England with more than 35 years of experience focused on the integration of environmental regulations and policies with his clients' industrial,…

Travis Kline, MEM, BCES

Travis Kline is a Senior Principal Toxicologist based in Washington, D.C. with more than 25 years of experience focused on human health risk assessment and applied toxicology.

Justin Knight, P.E.

Justin Knight is a Principal Environmental Engineer based in Georgia with more than 15 years of experience focused on managing federal environmental projects in the areas of vapor intrusion (VI)…

Julie Konzuk, Ph.D., PEng

Julie Konzuk is a Senior Principal Engineer based in Ontario with more than 20 years of experience focused on working with clients in Canada, Australia and the United States on…

Karen Kosiarek, P.E.

Karen Kosiarek is a Senior Principal Remediation Engineer based in Montana with more than 23 years of experience focused on the characterization and remediation of soil and groundwater contamination at…

Eric Kovich, P.E.

Eric Kovich is a Senior Principal Engineer based in Florida with more than 20 years of professional experience focused in the areas of Health, Safety, Security, and Environment (HSSE) regulatory…
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