GeoSierra Environmental has a vast library of published literature including journal papers, manuscripts, project summaries, technology descriptions, and conference presentations. Below is a summary of some of our publications including helpful external links to environmental fracturing, PRBs, and other industry resources. Please note that publications prior to 2007 may contain former contact information as the offices and phone numbers have been changed.
Read our extensive library of research papers that detail in depth GeoSierra Environmental's design/build services. If you have a specific request for information on complex sites, PRB longevity, or treatment train options, etc., please contact us.
A Citizen's Guide to Fracturing for Site Cleanup (September 2012)
Environmental Fracturing vs. Fracking (September 2013)
Emulsified Zero-Valent Nano-Scale Iron Treatment of Chlorinated Solvent DNAPL Source Areas (September 2010)
Micro-Scale Zero Valent Iron Injection at HPS (Fall 2009)
Chlorinated Solvents in Fractured Bedrock (March 2006)
Goodbye to Barriers – No trenches mean less disruption to city streets and beyond (March 2004)
Fracturing Technologies to Enhance Remediation (April 2002)
Technology Status Report – Hydraulic, Pneumatic and Blast-Enhanced Fracturing (March 2000)
In Situ Technology Tackles Tainted Groundwater (June 2000)
In Situ Remediation Technology Status Report: Hydraulic and Pneumatic Fracturing (April 1995)
“Hydraulic Anisotropy Characterization of Pneumatic-Fractured Sediments Using Azimuthal Self Potential Gradient”, Journal of Contaminant Hydrology, 103, (3-4), pp. 134-44.
“Installation of Dispersed Iron Permeable Reactive Treatment Zones Using Pneumatic Injection” in Chlorinated Solvent and DNAPL Remediation: Innovative Strategies for Subsurface Cleanup; Henry, S.M. and Warner, S.D., Eds.; Oxford University Press: American Chemical Society, Washington, D.C., 2003, pp. 236-258.
“Extended Radius Wells at McGuire AFB”, Soil & Groundwater Cleanup, October/November 1999, pp. 18-20. Schnell, D.L. (1999).
Utilization of Innovative Methods to Design and Install a ZVI-PRB Using Vertical Inclusion Propagation to Intercept a Chlorinated Plume
Delivery of a Permeable Injection Network for Enhanced Reductive Dechlorination Treatment – Adapting to Site Challenges
Effect of Dissolved Organic Carbon on Performance of ZVI-Based Remediation
Full-Scale Controlled Multi Azimuth Vertical Hydraulic Fracturing for ISCR and Permeability Enhancement
Pilot Testing of a Novel Multi-Azimuth Vertical Hydraulic Fracture Program for Permeability Enhancement
Pneumatic Fracturing and KMnO4 Injection to Treat Residual Hydrocarbons in Low Permeability Glacial Till
Design, Field Application and Verification of Pneumatically Injected Permeable Reactive Barriers
In-Situ "Green" Groundwater Treatment Design and Engineering of Controlled Vertical Hydraulically Fractured GW Remediation Programs
Installation and Verification of a Vertical Hydraulically Fractured ZVI PRB in a Residential Setting
Hydraulic Pulse Interference Tests for Site Hydrogeologic Characterization
Hydraulic Pulse Interference Tests for Integrity Testing of Containment and Reactive Barrier Systems
GeoSierra published annual newsletters to provide an overview of our current projects, highlight project successes, and to provide updates on our technology and refinements in our installation process technology. Below are archived versions of newsletters written during the early years of the technology/company.
There are a variety of resources available on the internet that may be helpful in gathering information about our industry and the comparative advantages of our methods. View these links to learn more about environmental fracturing and the construction of permeable reactive barriers:
Interstate Technology & Regulatory Council
Remediation Technologies Development Forum (RTDF)
Center for Groundwater Research – Zero-Valent Iron (ZVI)
Federal Remediation Technologies Roundtable
German PRB Network – Rubin
U.S. patents issued to GeoSierra involving deep installation of PRBs include the following:
- US 6,443,227 Azimuth control of hydraulic vertical fractures in unconsolidated and weakly cemented soils and sediments
- US 6,330,914 Method and apparatus for tracking hydraulic fractures in unconsolidated and weakly cemented soils/sediments
- US 6,216,783 Azimuth control of hydraulic vertical fractures in unconsolidated and weakly cemented soils and sediments
- US 5,944,446 Injection of mixtures into subterranean formations
Additional patents used for pneumatic fracturing include:
- US 5,032,042 Method and Apparatus for Eliminating Non-naturally Occurring Subsurface Liquid Toxic Contaminants from Soil
- US 5,560,737 Pneumatic Fracturing and Multicomponent Injection Enhancement of In Situ Bioremediation
- US 5,908,267 Treating Non-naturally Occurring Subsurface Soil Contaminants with Pneumatic Injection of Dry Media
- US 5,984,578 Apparatus and Method for In Situ Removal of Contaminants Using Sonic Energy
- US 6,012,517 Treating Non-naturally Occurring Subsurface Soil Contaminants with Pneumatic Injection of Dry Media