chlorinated solvent Articles
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Chlorinated solvents
The initial PSG survey identified TCE source areas that did not agree with the GPR survey findings. Based on these results, a subsequent PSG survey was performed to further characterize the site and better define the source areas identified in the initial survey. Analytical results were provided to the client within four (4) days of receipt of samples at the laboratory for both surveys. The ...
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Dr. Leo Lehmicke, a nationally recognized microbiologist in the area of bioremediation, has joined Hargis + Associates, Inc.
Dr. Leo Lehmicke, a nationally recognized microbiologist in the area of bioremediation, has joined Hargis + Associates, Inc. His specific area of expertise is natural attenuation and enhanced bioremediation of chlorinated solvents. He helped develop and was an instructor for a course on Natural Attenuation of Chlorinated Solvents that was given to EPA and State regulators around the country. Dr. ...
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North LA Case Study (C3 Technology)
The project site is an industrial facility located in the foothills of northern Los Angeles, California. The facility utilized chlorinated solvents in operations. Based on soil borings, site geology consisted of unconsolidated gravely sands, sand, silty sand, sandy silt, and silt from ground surface to more than 200 feet below ground surface (bgs). Groundwater was encountered at the site at ...
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CL#3 - In Situ BioLogix Application - Case Study
Site Information Chlorinated solvents were found in soil and ground water beneath a drum storage area at a manufacturing facility in central Alberta. The contamination was mainly found in the uppermost occurrence of ground water in an intratill silty sand formation. Within this zone the contamination had spread to cover an area of approximately 3,500 square feet. The contaminants found at the ...
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Industrial facility with chlorinated solvents
Project Description The project site is an Industrial facility located in the foothills of northern Los Angeles, California. The facility utilized chlorinated solvents in operations. Site Geology Based on soil borings site geology consisted of unconsolidated gravely sands, sand, silty sand, sandy silt, and silt from ground surface to more than 200 feet below ground surface (bgs). Groundwater was ...
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Environmental forensics investigation
Location: Vancouver, BC Owner: Confidential Description: Environmental forensics investigation ongoing to determine the source of chlorinated solvents (PCE, TCE, 1,1,1-TCA1,1,DCE) and 1,2-dichlorobenzene contamination at a site that has changed owners in the past 25 years. Advanced Forensic Techniques used include hydrolysis equation for dating groundwater contamination, molar ratios, date ...
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Aerobic Cometabolism of Halogenated Aliphatic Hydrocarbons: A Technology Overview
Untitled Document Abstract Bioremediation of chlorinated solvents has been moving from an innovative to mainstream technology for environmental applications. Cometabolism of chlorinated solvents by monooxygenase has been demonstrated for trichloroethylene (TCE) and dichloroethylene (DCE). Cl-out microbes combine the dehalogenation of PCE with the monooxygenase ...
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Dry CleanersSite, Houston, Texas - Case Study
Site Summary: BioLogix CL bioremediation was implementedat a dry cleaners site in Houston, Texasto reduce residualPCE and other chlorinated solvent concentrations in groundwaterfollowing dual phase vacuum extraction. After application of BioLogix CL®bioremediation the chlorinated solvent concentrations were reduced by 98%to 99% in less than 90 days.In Control Technologies, of Houston, ...
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Dry Cleaners Site, Houston, Texas - Case Study
Site Summary: BioLogix CL bioremediation was implemented at a dry cleaners site in Houston, Texas to reduce residual PCE and other chlorinated solvent concentrations in groundwater following dual phase vacuum extraction. After application of BioLogix CL® bioremediation the chlorinated solvent concentrations were reduced by 98% to 99% in less than 90 days. In Control Technologies, of Houston, ...
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Protocol for Enhanced In Situ Bioremediation Using Emulsified Edible Oil
An in-depth discussion of the EOS® patented technology and its usefulness for site remediation is presented. Details of how the technology works, design considerations as well as strengths and limitations of the technology are presented. 1.1 INTRODUCTION Management of groundwater contaminated with chlorinated solvents, perchlorate, and explosives is one of the Department of Defense’s ...
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Project - Tank Barge Degassed
PURGIT has the correct equipment and experience to degas tank barges Case history Methylene chloride Recovered 325 gallons—about 1583 pounds or clean condensate by pulling vapors from the vessel liquid line. We condensed the chlorinated solvent and returned the non-condensables to the same tank through the vapor line in a closed loop. The tank setup required approx 50' each of suction ...
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Case study - Dual-reagent ISCO “Fast-Tracks” cleanup of Orlando Brownfield
Description: A Brownfield property impacted with chlorinated solvents was the planned location for the home of the Orlando Magic basketball team. Contaminants: Chlorinated solvent contamination was present in soil and groundwater with PCE concentrations greater than 14,000 ug/L and potential presence of DNAPL. Remedial challenge: The City of Orlando was looking to obtain a pay-per-performance ...
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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 ...
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Chlorinated Solvent Plume Remediation, Midwest United States - Case Study
ERM was contracted by a confidential client to implement a remedial action program to address groundwater impacted by chlorinated solvents. The site is a former manufacturing facility, which used an underground storage tank for waste oil generated by manufacturing operations and cleaning activities. During excavation of the tank, it was determined the feeder line was leaking waste oil containing ...
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Impact of 1,4-Dioxane from Domestic Effluent on the Agano and Shinano Rivers, Japan
1,4-Dioxane is a polar and low-biodegradable organic compound. It is used as an industrial solvent or solvent stabilizer that prevents the breakdown of chlorinated solvents during manufacturing processes (Zenker et al. 2003). Industrial solvents are used in decreasing, electronics, metal finishing, fabric cleaning, pharmaceuticals, herbicides and pesticides, anti freeze, paper manufacturing and ...
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CL-Out In Situ Bioremediation of Perchlorate
CL-Out is a consortium of facultative aerobic organisms that are well know for their ability to utilize nitrates. CL-Out is generally used for the aerobic cometabolism of PCE and other chlorinated solvents. As the half-reaction for perchlorate is close to that of nitrate, CL-Out cometabolism of perchlorate was successfully tested in the laboratory. In addition to laboratory tests, CL-Out was ...
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CL#1 - In Situ BioLogix Application - Case Study
Site Information A confidential dry cleaners site was contaminated by residual PCE and other chlorinated solvent concentrations in groundwater following dual phase vacuum extraction. The soil and sediments beneath the site have a moderate hydraulic conductivity estimated at 10-4 cm/sec. The area of ground water impact and treatment was approximately 20,000 square ...
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Technical Bulletin: c-DCE stall out
Trichloroethene (TCE) and Perchloroethene (PCE) chlorinated solvents have been responsible for the serious contamination of soils and groundwater. The occurrence of cis-DCE “stall”, the condition of where it appears biodegradation beyond cis-DCE to vinyl chloride does not occur resulting in cis-DCE accumulation, is often misinterpreted. How do you know if your site has c-DCE “Stall”?1) Evaluate ...
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Andover, Vapor Extraction and Refrigerated Condensation Case study
Vapor Extraction and Refrigerated Condensation was used as a primary source removal technology to remediate high concentrations of recalcitrant chlorinated solvent compounds at the WDE Site in Minnesota. The use of Refrigerated Condensation has achieved high mass removal rates and will reduce the lifecycle costs and time of remediation. History 6,600 drums of hazardous wastes were placed in a ...
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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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