Geosyntec Consultants

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Specialized In Situ Treatment Technologies

Geosyntec works with clients worldwide to optimize the application of naturally occurring microbial consortia to treat chlorinated solvents in groundwater.
Geosyntec works with clients worldwide to optimize the application of naturally occurring microbial consortia to treat chlorinated solvents in groundwater.

Geosyntec performs applied R&D assignments in collaboration with major universities and federal agencies, often giving our practitioners 'first-to-field' experience before others.
Geosyntec performs applied R&D assignments in collaboration with major universities and federal agencies, often giving our practitioners 'first-to-field' experience before others.

Geosyntec has all the in-house capabilities to provide design and services during construction for complex in situ systems, such as a permeable reactive barrier utilizing zero-valent iron.
Geosyntec has all the in-house capabilities to provide design and services during construction for complex in situ systems, such as a permeable reactive barrier utilizing zero-valent iron.

Geosyntec is an industry leader in remediating difficult-to-treat environmental impacts to soil, groundwater, and sediments using advanced 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. Decades of experience in the implementation of new, emerging, and conventional technology allows our practitioners to frequently bridge the gap between the development and "first-to-field" stages of environmental solutions.

In particular, Geosyntec practitioners are leaders in the advanced application of microbiology-based solutions for the remediation of recalcitrant contaminants in soil and groundwater, especially those that have proven resistant to conventional remediation technologies or those with comparatively high costs for the application of physical and chemical technologies to achieve similar results.

We specialize in the application of enhanced in situ bioremediation of solvent mixtures, recalcitrant solvents, perchlorates, and other compounds in groundwater and sediments. In fact, Geosyntec practitioners were key field members of the first pilot-scale groundwater re-circulation system in which the bioaugmentation culture KB-1 was applied as an in situ remedy to treat groundwater impacted by chlorinated solvents. Subsequent successes with this technology led to growth in the firm's bioaugmentation practice and resulted in hundreds of applications of KB-1 for our clients worldwide.

Today we are practice leaders in the effective application of multiple in situ remediation technologies, including reactive treatment processes such as chemical oxidation and zero-valent metal treatments. We also are among the first to develop, test, and successfully apply electrokinetic enhanced amendment delivery, an innovative approach that uses electrokinetic mechanisms to promote migration of electron donors, electron acceptors, and bacteria for in situ bioremediation (EK-bio) or oxidants for in situ chemical oxidation (EK-ISCO).

Working with collaborators at the University of Edinburgh, the University of Western Ontario, and the University of Strathclyde, our practitioners also have developed a new in situ remediation technology that targets non-aqueous phase liquids. Self-sustaining Treatment for Active Remediation (STAR) uses smoldering combustion – the type of combustion that turns charcoal into ash in your barbeque grill – to quickly and efficiently destroy contaminants such as coal tar, creosote, petroleum, hydrocarbons, oils and greases, mineral oil, and solvents.

Advancing the State of the Practice

Geosyntec scientists have pioneered the use of genetic molecular tools for the characterization of the microbes in environmental media. Our scientists are engaged in applied research and development with top academic institutions around the world, including the University of Toronto, Cornell University, and the Georgia Institute of Technology.

Our practitioners also have performed research on multiple projects for NASA as well as the U.S. Department of Defense under the auspices of the Strategic Environmental Research and Development Program (SERDP) and the Environmental Security Technology Certification Program (ESTCP). Through our active and long-standing association with the Interstate Technology and Regulatory Council (ITRC), our senior practitioners collaborate with states and the U.S. EPA to produce guidance documents and training courses for innovative application methods related to remediation of chlorinated solvents and other recalcitrant contaminants in groundwater.

In addition, Geosyntec's in-house laboratories provide physical and chemical testing that effectively monitors the performance of treatment processes, technologies, and systems. We also produce field application quantities of naturally occurring consortia of microorganisms that target specific recalcitrant compounds. Using genetic testing we can demonstrate the efficacy of these consortia in achieving containment reduction targets.

Our technical evaluation facilities regularly conduct chemical oxidation and bioreactor tests; examine the presence of organics and inorganics in wastewater; evaluate the effectiveness of remediation products; simulate the performance of conceptual designs; and analyze the likely behavior and end point of various treatment processes. All of our lab teams communicate regularly to share knowledge and direct internal and external client projects to the most appropriate technology solutions.

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Practices
Persons
Projects
Publications
Development and Performance Monitoring of a Dechlorinating Culture and an Innovative Bioremediation Remedy at the Ground-Water/Surface-Water Interface
Design and Performance of an Enhanced Bioremediation Treatment Approach at the Sediment/Surface Water Interface
Self-Sustaining Treatment for Active Remediation (STAR): Introduction of a New Technique for the Remediation of MGP Sites
Self-Sustaining Treatment for Active Remediation (STAR): In Situ Field Application for the Treatment of Coal Tar in Soils
Self-Sustaining Treatment for Active Remediation (STAR): Ex Situ Field Application for the Treatment of Hydrocarbon-Impacted Soils
Field Evaluation of the Treatment of DNAPL Using Emulsified Zero-Valent Iron
An Overview of Bench Scale Treatability Studies Performed to Assess Biodegradation of Contaminant Mixtures
Application of a Bimetallic Solvent Paste Technology For PCB Removal From Older Structures On DOD Facilities
Unique Ecophysiology among U(VI)-reducing Bacteria as Revealed by Evaluation of Oxygen Metabolism in Anaeromyxobacter Dehalogenans Strain 2CP-C
Combining Bioaugmentation Cultures to Treat Complex Mixtures of High-Concentration Volatile Organic Compounds – Bench Test Findings
Electrokinetic Technology for Innovative Bioremediation Amendment Delivery and Bioaugmentation Strategy
An Electrokinetic Process for Removing Cu, Cr, and As from CCA-Treated Wood
Biodegradation of Chlorinated Solvents in Bioreactor Landfills
Electrokinetic (EK)-enhanced Bioaugmentation for Remediation of Chlorinated Solvent Contaminated Clay