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Michael D'Alessandro is a Senior Principal Environmental and Civil Engineer based in Georgia with more than 25 years of experience focused on the development of environmental and infrastructure projects using…
Rebecca Daprato is a Senior Principal Environmental Engineer based in Texas with more than 10 years of professional experience focused on groundwater and soil site assessments, remedial system technology evaluations,…
Helen Dawson is a Senior Principal Civil and Environmental Consultant based in Washington, D.C. with more than 30 years of experience focused on private practice, academia, and public service. Her…
Rula Deeb is a Senior Principal based in California with more than 25 years of experience focused on private practice and academia addressing the cross-media fate and transport of contaminants…
Mary deFlaun is a Senior Principal Environmental Microbiologist based in New Jersey with more than 25 years of experience remediating recalcitrant organics and metals, including monitored natural attenuation (MNA), enhanced…
Todd DeJournett is a Senior Engineer based in Minnesota with more than 15 years of professional experience focused in the areas of industrial water/wastewater treatment, drinking water treatment, aquatic chemistry,…
Jamie deLemos is a Senior Principal based in Massachusetts with more than 10 years of experience focused on soil and aqueous geochemistry and forensics, with particular expertise in the occurrence,…
Peter de Haven is a Senior Principal Engineer based in North Carolina with 20 years of experience focused on site characterization, data management and analysis, numerical modeling, and both the…
Lucas de Melo is a Senior Principal Engineer based in Maryland with more than 17 years of experience in dam-related projects, geotechnical design and field studies, hazardous materials remediation; and…
Jon Dickinson is the company's Chief Financial Officer and Senior Vice President for Corporate Services. As CFO, Jon serves as a member of Geosyntec's Executive Committee responsible for strategic guidance,…
Paul Dockweiler is a Senior Mining Geologist based in Nevada with 18 years of experience focused on the development and start-up of hardrock mining operations.
Peter Dollar is a Principal Consultant based in Ontario with more than 20 years of experience focused on site characterization, remediation strategy, remedial design and implementation, and risk management. In…
Lydia Dorrance, Ph.D. is an Environmental Scientist based in California with more than nine years of experience focused on emerging contaminants, environmental forensics, and litigation support.
Jamey Dotson is a Principal Engineer based in Tennessee with more than 17 years of professional experience focused in the areas of civil, environmental, and geotechnical engineering; program management; and…
Helen Douglas is a Senior Consultant based in New England with more than 25 years of experience focused on the assessment and remediation of aquatic sites with environmentally persistent chemicals.
Scott Drew is a Senior Principal Environmental Scientist based in New Jersey with more than 25 years of experience focused on the fields of environmental technology, site remediation, and environmental…
Neal Durant is a Senior Principal Consultant based in Washington, D.C. with more than 28 years of experience investigating, remediating, and managing complex contaminated sites.
Geosyntec Consultants
Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure.

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