Geosyntec practitioners rank among the world's top professionals in providing site assessment and remediation services at a wide range of impacted sites using innovative technologies and solutions that consistently advance the state of the practice.
Our assessment specialists include some of the most respected and sought-after professionals in the environmental remediation industry today. We provide public and private clients a range of services for their toughest challenges, including developing and advocating successful compliance strategies, cost-effective and "goals-focused" site investigation, remediation planning engineering, remediation construction and implementation, construction management – and much more.
Geosyntec practitioners based in the United States, Canada, the United Kingdom, Ireland, Australia, and Malaysia apply advanced academic training and decades of scientific, engineering, and construction management experience to design, permit, and implement better, safer, and more cost-effective solutions for clients all over the world. Our project partners value our ability to guide them through their remediation strategy and fully explain the costs and benefits of the options available to address their particular challenge.
Our project experience spans hundreds of initiatives across the environmental remediation spectrum. A brief sample of our most successful projects includes:
- The decommissioning and remediation of multiple refineries, NASA storage and assembly areas, and chemical manufacturing and distribution facilities;
- The remediation and closure of dozens of industrial waste and municipal solid waste facilities, manufacturing plants, military installations, and sites regulated under CERCLA and RCRA;
- The application of high-volume air sampling techniques to screen sites for vapor intrusion and address impacts from the presence and movement of volatile chemicals in groundwater and soil;
- The construction of on-site disposal facilities for the long-term, safe disposal of soil and other media at sites contaminated with many types of industrial wastes, including low-level and mixed radionuclides;
- The use of in situ and ex situ remediation technologies – such as reducing and oxidizing agents or the injection of bioaugmentation cultures – to treat metals- and perchlorate-impacted soils.
These and other site investigation and remediation solutions typically save our clients millions of dollars compared to alternative approaches, while also reducing the long-term liability associated with contaminated sites.
Advancing the State of the Practice
Geosyntec's engineers, scientists, and innovators leverage the power of chemical, physical, geological, and biological processes and reactions to detoxify, immobilize, and eliminate exposure risks to a wide range of chemicals in the environment, especially those difficult to treat by more conventional means.
Our practitioners are directly involved at the state, national, and international level with the creation of guidance on vapor intrusion investigation and mitigation; the modeling of fate and transport of contaminants in groundwater; and the development of innovative in situ remediation technologies. We pioneered the use of geochemical modeling to predict the behavior of metals in the environment and were among those to develop the first auditable, quality controlled, commercially available sequential extraction procedures for heavy metals. The method verifies geochemical model results with field data; supports risk-based decisions for site management and remediation; provides direct evidence for the transformation of metals from environmentally mobile, toxic states into sequestered, immobile, non-toxic forms; and guides land use restrictions to maintain conditions for low metals toxicity and mobility.
Additionally, Geosyntec's vapor intrusion practitioners rank among the best in the world. Our professionals published the most widely cited and used vapor intrusion model (Johnson and Ettinger, 1991), and we have performed pioneering modeling of aerobic degradation of hydrocarbon vapors with the 3-D model of Abreau and Johnson (2005). Our practitioners also have developed innovative methods to evaluate the mechanisms of subsurface vapor transport and pioneered the use of high purge volume sampling to characterize the pneumatic conductivity of unsaturated soil and bedrock using gas phase pumping tests.
We continue to make advancements in the development of real-time intelligence to meet a wide variety of environmental needs. Geosyntec’s OptiRTC computing platform, for instance, provides clients with valuable web-based data monitoring and automated control solutions for groundwater remediation sites, environmental monitoring systems, and advanced green infrastructure.