Ron Gestler

Ron Gestler is a Senior Scientist based in California with 18 years of professional experience in remediation services. He has participated at every level in the design, implementation, operation, maintenance, and monitoring for remediation systems using a variety of technologies including phytoremediation, bioremediation, in situ chemical reduction and oxidation, and others.  He has successfully implemented and operated large-scale, multi-year remediation programs at sites in the United States and Canada to address a number of environmental pollutants.


Ron's practice focuses primarily on the use of phytotechnologies, plant-based remediation technologies, to address impacted groundwater, soil, and sediments.  He has implemented successful phytoremediation systems at sites across North America to remediate impacts from contaminants including chlorinated solvents, petroleum hydrocarbons, metals and metalloids, salts, nutrients, pesticides, chlorophenols, and 1,4-Dioxane.  He has particularly focused on the use of innovative phytoremediation technologies, such as the TreeWell® system, which enhance contaminant degradation and target specific groundwater-bearing zones at depths normally inaccessible to plant roots. For example, Ron oversaw the installation of an innovative phytoremediation pilot study at a site impacted by high levels of chlorinated solvents, including dense non-aqueous phase liquids (DNAPLs).  The pilot study system integrated phytoremediation with both in-situ chemical reduction and bioremediation technologies within the same treatment unit.  Zero-valent iron and slow-release electron donor were used in concurrent treatment regimens to reduce chlorinated solvent concentrations prior to groundwater uptake by plant roots. The success of the pilot study has since led to implementation of a larger-scale system using this innovative phytoremediation design.

Ron has also conducted performance assessments and troubleshooting of phytoremediation systems designed and installed by other consultants, identified key deficiencies and problems hindering their operation, and successfully implemented corrective actions to enhance their performance.

Contact Ron Gestler at This email address is being protected from spambots. You need JavaScript enabled to view it. or +1-925-278-8688.

Career Summary: Ron Gestler

  • Specialties: Site Investigation and Remediation, Groundwater Assessment and Remediation, Phytotechnologies
  • Practice Areas: Contaminated Site Assessment and Cleanup
  • Disciplines: Microbiology
  • Education: M. Sc., Microbiology, University of West Georgia, 1997; B. Sc., Biology, University of West Georgia, 1995
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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