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Symon Jackson, CPEng, NER

Symon Jackson is a Senior Principal Civil, Geotechnical, and Tailings Engineer based in Australia with more than 29 years of experience focused on geotechnical and dam engineering, including tailings dams,…

Meggen Janes, PEng

Meggen Janes is a Principal Environmental Engineer based in Ontario with more than 25 years of environmental consulting experience focused on forensic analysis, risk assessment, permitting, remediation, and monitoring.

Thomas Jansson

Thomas Jansson is a Principal Hydrogeologist with more than 30 years of experience as an environmental consultant, focusing on Brownfield assessments and site remediation.

Derek Jelinek, PE

Derek Jelinek is a Principal Remediation Engineer based in Pennsylvania with more than 20 years of experience focused on engineered solutions to environmental challenges caused by industrial operations, petroleum refining,…

Mike Jenkins, PhD, PE

Mike Jenkins is a Senior Principal Engineer based in Florida with more than 30 years of experience focused on coastal projects.

Ronald Johnson, PE, GE

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…

Mark Johnson

Mark Johnson is a Senior Principal Consultant based in Maryland with more than 28 years of experience focused on transactional support, site investigation and remediation, subsurface vapor intrusion to indoor…

Lange Jorstad, PhD

Lange Jorstad, PhD, is a Senior Principal Contaminant Hydrogeologist with 25 years’ experience in the design, management and delivery of contaminated land assessment and remediation services and related corporate advisory…

Todd Kafka, PG

Todd Kafka is a Senior Principal Hydrogeologist based in Florida with more than 26 years of professional experience focused on site assessment, remediation, and hydrogeological investigations for private and public…

Seth Kellogg, PG

Seth Kellogg is a Senior 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,…

Jason Kerstiens, PE

Jason Kerstiens is a Principal Civil and Environmental Engineer based in Colorado with more than 20 years of experience focused on process engineering, regulatory compliance, water resource optimization, and strategic…

Wendy Key, PG

Wendy Key is a Principal Geologist based in California with more than 15 years of environmental due diligence, environment, health & safety (EHS) regulatory compliance, and contaminated site investigation experience.

Adam King, PE

Adam King is a Senior Principal Civil Engineer based in California with more than 20 years of environmental consulting experience focused on the assessment and remediation of impacted soil, soil…

Jeffrey King, PhD, PE, CFM

Jeffrey King is a Principal Engineer based in Florida with more than 25 years of experience focused on hydrogeology, hydrology, water resources, and coastal engineering. He models and analyzes watersheds,…

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.

John Knutson, PE, PMP

John Knutson is a Senior Principal Engineer based in Washington with more than 30 years of experience focused on planning and design, floodplain management, and stream restoration projects for public…

Jerko Kocijan, PhD, PE, GE

Jerko Kocijan is a Principal Engineer based in California with more than 15 years of experience in geotechnical site characterization, geologic and seismic hazards assessment, and analysis and design of…

Rachel Klinger, PE, BCEE

Rachel Klinger is a Senior Principal Engineer based in Florida with more than 12 years of environmental consulting experience focused on providing groundwater, soil, and sediment assessments; remedial system technology…

Justin Knight, PE

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, PhD, 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, PE

Karen is a Senior Principal Engineer based in Colorado with more than 25 years of practice in site investigation, remediation (soil, groundwater, vapor), CERLCA RI/FS, brownfields and sediment sites. She…

Michael Kovacich, PG

Mike Kovacich is a Senior Principal Hydrogeologist based in Michigan with more than 30 years of experience focusing on complex environmental investigation and remediation projects, landfill monitoring programs, treatment system…

Eric Kovich, PE

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…

Allison Kreinberg

Allison Kreinberg is a Senior Scientist based in Ohio with experience in the assessment and remediation of sites impacted by chlorinated solvents and metals, coal combustion residual (CCR) management, and…

Rich Kraft, PG, CEG, CHG

Richard Kraft is a Senior Consultant Hydrogeologist based in California with more than 30 years of experience focused on diverse hydrogeologic and environmental investigation and remediation projects.

Ganesh Krishnan, PE, D.WRE, CPESC, NCEES

Ganesh Krishnan is a Senior Principal Engineer based in Georgia with more than 20 years of experience focused on water resources and geoenvironmental engineering.

Joseph Kula, P.E.

Joe Kula is a Senior Principal Engineer based in Maryland with 40 years of experience in civil-geotechnical engineering services focused on dams and reservoirs, levees and flood mitigation projects, waste…

Jeffrey Kurtz, PhD

Jeffrey Kurtz is a Senior Consultant and Economic Geologist based in Colorado with more than 30 years of experience focused on geochemistry, statistics and data management experience in water resources,…

Kyle LaClair, PE

Kyle LaClair is a Principal Engineer based in Virginia with more than 20 years of experience focused on developing and permitting civil infrastructure projects.

Michael Lambert

Michael Lambert is a Senior Principal Consultant based in Pennsylvania with more than 15 years of experience focused on managing and implementing soil and groundwater investigations and remediations under both…

James Langenbach, PE

James Langenbach is a Senior Principal Environmental Engineer based in Florida with more than 20 years of experience focused on assisting clients with environmental assessments; remediation design and treatment system…

Douglas Larson, PhD, PE, LSP

Doug Larson is a Senior Principal Engineer who has worked on the investigation and cleanup of hazardous waste sites since 1985.

Dan LaPorte, PGeo

Dan Laporte is a Senior Principal Hydrogeochemist based in Ontario with more than 11 years of experience focused on characterizing acid mine drainage and metal leaching and managing mine waste…

David Latham

David Latham is a Senior Hydrogeologist based in Florida with more than 30 years of experience focused on the management and performance of site assessments and remediation activities. He is…

Daniel Lee, PE, CCM

Daniel Lee is a Senior Principal Engineer based in California with more than 19 years of experience focused on a variety of private and public development projects, including planning, engineering…

Marc Leisenring, PE

Marc Leisenring is a Senior Principal Water Resources Engineer based in Oregon with more than 20 years of experience focused on stormwater master planning, watershed and storm system modeling, environmental…