groundwater conductivity Articles
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Springtown, Texas - excavation; open-hole chemical oxidation case study
When a tanker truck overturned on this road near Springtown, Texas, approximately 8,000 gallons of gasoline was spilled. Some of the fuel burned, discoloring the pavement, but a large portion of the fuel seeped into the sandy soils. Immediately after the accident, local responders excavated some of the most severely contaminated soil, but excavation was discontinued when groundwater was ...
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In Situ Bioremediation of Chlorinated Solvents
ABSTRACT: In situ bioremediation is ongoing at a former manufacturing facility in Portland, Oregon. Shallow groundwater at the site was impacted by chlorinated solvents, primarily trichloroethene and degradation products cis-1,2-dichloroethene and vinyl chloride. In situ chemical oxidation treatment was completed in 2003 via the injection of sodium permanganate in source areas. Subsequent ...
By Redox Tech
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In Situ Bioremediation of Chlorinated Solvents: A Case Study
In situ bioremediation is ongoing at a former manufacturing facility in Portland, Oregon. Shallow groundwater at the site was impacted by chlorinated solvents, primarily trichloroethene and degradation products cis-1,2-dichloroethene and vinyl chloride. In situ chemical oxidation treatment was completed in 2003 via the injection of sodium permanganate in source areas. Subsequent stimulation of in ...
By Redox Tech
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Advancing Green Technology case study
Challenge: A subject of considerable research in recent years, sulfate reducing bacteria have been demonstrated to be a dominant factor in the natural anaerobic biodegradation of petroleum hydrocarbons dissolved in groundwater. Antea Group has conducted extensive pilot testing at hundreds of sites across the United States that demonstrate the benefits of enhancing sulfate concentrations in ...
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Enhanced Anaerobic Bioremediation of a TCE Source Area at the Tarheel Army Missile Plant using EOS®
Emulsified oil substrate (EOS®) is being used to remediate a trichloroethene (TCE) source area at the Tarheel Army Missile Plant (TAMP) in Burlington, North Carolina. 1. INTRODUCTIONEmulsified oil substrate (EOS®) is being used to remediate a trichloroethene (TCE) source area at the Tarheel Army Missile Plant (TAMP) in Burlington, North Carolina. TAMP is a government-owned, formerly ...
By Redox Tech
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Former Wellsite Sump - In-Situ Chemical Oxidation - Case Study
Former admixed drilling sump at an abandoned wellsite. Surficial soil impacts were excavated and removed from Site. Shallow groundwater limited excavation and required in-situ treatment method for remaining soil impacts and groundwater impacts. Lithology of the target treatment zone is saturated silty sand, creating a pathway for contaminant ...
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An analogue of long-term stability of flow-path structure in crystalline rocks distributed in the orogenic belt, Japan
In the orogenic belt, in the Japanese islands, crystalline rocks from the youngest to older ages and of different orders have been identified which have formed massive areas. The fracture system observed within these rock masses implies that the groundwater and solute can be conducted through the fracture's network. It is expected that the nuclides can be retarded due to chemical sorption and/or ...
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Edible Oil Barriers for Treatment of Perchlorate Contaminated Groundwater
An EOS® biobarrier was designed and implemented to remediate perchlorate contaminated groundwater. The report describes the site characterization, design steps, implementation, monitoring results and lessons learned from this effective remedial approach. EXECUTIVE SUMMARYThis final technical report documents the demonstration of emulsified edible oils for remediation of perchlorate in ...
By Redox Tech
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Hydrogeochemical and biological processes affecting the long-term performance of an iron-based permeable reactive barrier
Received for publication November 29, 2007. Despite the wide diffusion of zero-valent iron (Fe0) permeable reactive barriers (PRBs), there is still a great uncertainty about their longevity and long-term performance. The aim of this study is to investigate the biological and the hydrogeochemical processes that take place at a Fe0 installation located in Avigliana, Italy, and to derive some ...
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Fractured Bedrock Remediation - Case Study
ABSTRACT BOS 200® successfully remediates petroleum groundwater impacts in fractured bedrock at a former truck stop. Based on the post-injection groundwater results from the pilot test and full-scale injection, a No Further Action letter was issued in February 2015. CHALLENGES Over a period of 20 years, site investigation activities revealed a 320 foot (ft) long dissolved hydrocarbon plume ...
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Landfill remediation with refrigerants and chlorinated solvents
PROJECT DESCRIPTION Between 1979 and 1980, industrial and hazardous wastes were disposed of at the Site in a series of unlined pits, each of which was used for a particular type of waste disposal. It is reported based on evaluations of manifests that approximately 3.4 million gallons of hazardous liquid wastes and between 3,700 and 4,100 tons of solid wastes were disposed of in the pits at the ...
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