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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…