Services - GeoSierra Environmental

GeoSierra Environmental
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Equipment

GeoSierra Environmental, Inc., an affiliate of Panther, was acquired in December 2006. GeoSierra’s technical personnel are experts in the field of contaminated groundwater cut-off technology. GeoSierra is also widely known for its Trenchless Permeable Reactive Barrier (PRB) technology, where it holds four major patents:

  1. U.S. Patent No: 6,443,227: Azimuth control of hydraulic vertical fractures in unconsolidated and weakly cemented soils and sediments (Issued September 3, 2002).
  2. U.S. Patent No: 6,330,914: Method and apparatus for tracking hydraulic fractures in unconsolidated and weakly cemented soils and sediments (Issued December 18, 2001).
  3. U.S. Patent No: 6,216,783: Azimuth control of hydraulic vertical fractures in unconsolidated and weakly cemented soils and sediments (Issued April 17th, 2001).
  4. U.S. Patent No: 5,944,446: Injection of mixtures into subterranean formations (Issued August 31, 1999).

In addition to the areas of expertise implemented by Geosierra involving the placement of zero-valent iron (ZVI) walls though Trenchless methods, we are also leveraging this technology to tackle other difficult cleanup problems by:

  • Installing permeable sand cut-offs in the saturated zone for enhanced groundwater extraction via the use of subsurface French drains
  • Vadose zone sand collection walls for vapor collection of migrating methane gas from landfills
  • Installation of solid oxidants into groundwater to create oxidant cut-off walls providing localized source remediation and downgradient plume treatment via advective flow of oxidants

GeoSierra’s Trenchless PRB Placement technology enables the installation of PRBs at sites where trenching is not an option, such as deep PRB installations exceeding 100 feet or shallow sites with complexities such as congested aboveground streets with underground and overhead utilities or even within active railroad right-of-ways.

For more information on GeoSierra, please visit www.geosierraenv.com.

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