Mark Johnson is a Senior Principal Consultant based in South Carolina with more than 29 years of experience focused on environmental, health, and safety (EHS) and environmental, social, and governance (ESG) merger and acquisition (M&A) transactions, environmental regulatory compliance, site investigation and remediation, and brownfield redevelopment planning and design.
David Bertrand is a Senior Principal Hydrogeologist based in Ontario with more than 20 years of experience in environmental consulting. David has directed and managed large interdisciplinary projects including contaminated site assessment and remediation of recalcitrant contaminants, brownfield redevelopment, waterfront revitalization and vapor intrusion assessment and mitigation.
James Brinkman is a Principal Engineer based in Massachusetts with more than 30 years of experience focused on projects associated with sediments, both for remediation and navigation purposes. His clients have primarily included large industrial interests with holdings and legacy sites around the world.
Jason Conder is a Senior Principal Scientist based in California with more than 15 years of experience focused on risk assessment and contaminated sediments in contaminated site assessment and management, environmental toxicology, and ecological and human health risk assessment.
Jamie deLemos is a Senior Principal based in Massachusetts with more than 15 years of experience focused on soil and aqueous geochemistry and contaminant forensics.
Geosyntec’s municipal solid waste (MSW) landfill practice specializes in addressing the most complex and challenging landfill projects through our innovative technologies and designs. Our practitioners assist clients with permitting greenfield sites, maximizing disposal capacity at existing sites, solving complex site challenges, and addressing waste issues. With more than 400 facilities and numerous contract-research projects with the U.S. Environmental Protection Agency (EPA) completed, we continue to develop practical, innovative approaches to design and construction challenges associated with liner and cover systems, geotechnical and seismic stability, increasing and maximizing site capacity, gas management and conversion, and leachate management.
Lakes, rivers, reservoirs, and marine environments, especially those in urban waterfront and coastal areas, often have contaminated sediment and surface water and stressed biota from decades of industrial and commercial activities. Sediment contamination can include metals, crude oil and refined petroleum compounds, polynuclear aromatic hydrocarbons (PAHs), pesticides, per- and polyfluoroalkyl substances (PFAS), and polychlorinated biphenyls (PCBs). Because contaminated sediment sites present complex challenges, site evaluation and cleanup are expensive and can take several years to implement, and the metrics for remedy effectiveness are not often well defined.
Working with public- and private-sector clients, Geosyntec provides award-winning redevelopment strategies for brownfield sites worldwide. From site identification, investigation, and remediation to design, permitting, and construction management, we provide the services necessary to redevelop an environmentally impacted property to an end use that meets environmental stewardship, regulatory compliance, and stakeholder needs. We employ appropriate and efficient geotechnical engineering and environmental remediation services to solve our clients’ brownfield redevelopment challenges. Geosyntec approaches each brownfield site individually by tailoring investigations, risk assessments, and remediation approaches to the client’s planned end use. We work with regulators, developers, and insurance providers to realize the full economic and social value of their sites and develop solutions that are amenable to all parties. We provide stakeholders with start-to-finish consistency and reassurance that the environmental elements of development are being managed by one firm because of our expertise in regulations, risk assessment, groundwater and soil remediation, soil vapor mitigation, geotechnical and geoenvironmental engineering, and solid waste and environmental management.
Geosyntec is an industry leader in remediating difficult-to-treat environmental impacts to soil, groundwater, and sediments through the use of specialized in situ techniques. Our practitioners are adept at expediting site investigations, optimizing remediation solutions, and accelerating site closure through a wide range of innovative technology applications. Our expertise in the implementation of new, emerging, and conventional technologies allows our practitioners to frequently bridge the gap between the development and first-to-field stages of environmental solutions. Our expertise and industry leadership in the advanced application of microbiology-based solutions for the remediation of recalcitrant contaminants in soil and groundwater has established Geosyntec’s solutions as the preferred method, especially for sites with proven resistant to conventional remediation technologies or when compared to the comparatively high costs for the application of physical and chemical technologies that achieve similar results. Two of Geosyntec’s affiliated companies provide specialized services and technologies regarding in situ treatments:
Geosyntec's human health and ecological risk assessment services identify the proper approach to remediate sites impacted by a wide variety of contaminants. Our risk assessment specialists work in conjunction with our remediation practitioners to develop site-specific solutions that achieve the needed levels of protection while optimizing financial commitments and operational practicalities for our clients. Our specialists also provide expert consultation and testimony on environmental exposure health issues for our legal clients. Through our technical specialists in biostatistics, epidemiology, information management, and contaminant fate and transport modeling and other specialized practitioners, we provide an exceptional quality of work that has become the envy of the industry.
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