chlorinated solvents Articles

  • 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 ...

  • 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 ...

  • 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 ...


    By EOS Remediation, LLC

  • Soil & Groundwater treatment of Chlorinated Solvents

    Project: Treated 675 Cubic Yards of Chlorinated Contaminated Soil and Groundwater Client: Operating Dry Cleaners Location: Lexington, Kentucky Scope of work: In-Situ Bioremediation Project cost: $7,575 (Included earthmoving, labor, and all bioremediation materials) Source of ...

  • Remediating groundwater contaminated with chlorinated solvents

    Chlorinated solvent contaminationof groundwater is a recognizedbarrier to both potablewater use and brownfield siteredevelopment in Canada.Several high-profile trichloroethene(TCE) contaminant issues such as thosein Cambridge, Ontario, and in Shannon,Québec, have increased public awarenessof this problem, and ...


  • Enhanced Bioremediation of Chlorinated Solvents (PDF)

    Enhanced in situ bioremediation of chlorinated solvents in groundwater has been successfully demonstrated at many sites by supplying lactic acid as an electron donor. The source of lactate for these successful pilot tests is Hydrogen Release Compound (HRC), a polylactate ester specially formulated for slow release of lactic acid upon hydration. HRC has been delivered to chlorinated ...


    By REGENESIS

  • Chlorinated solvents: methylene chloride and TCE

    Introduction This paper presents the results of a scaled and phased approach to source remediation of high concentrations of recalcitrant chlorinated solvent compounds via soil vapor extraction (SVE) and vapor treatment at a Site in Southern California. Phase I began with refrigerated condensation (C3) in order to achieve high mass removal rates to reduce lifecycle costs and time ...

  • 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 ...

  • Scenarios evaluation tool for chlorinated solvent MNA

    Over the past three decades, much progress has been made in the remediation of chlorinated solvents from the subsurface. Yet these pervasive contaminants continue to present a significant challenge to the U.S. Department of Energy (DOE), other federal agencies, and other public and private organizations. The physical and chemical properties of chlorinated solvents make it difficult to rapidly ...


  • How to: Bioremediate chlorinated solvents without accumulating metabolites

    Chlorinated volatile organic compounds (CVOCs)such as tetrachloroethylene (PCE) and trichloroethylene(TCE), commonly used as dry cleaningsolvents and degreasers, pose an ongoing threatto human health and wildlife when spilled intogroundwater. Through the injection of bioremediation productsinto the impacted groundwater, the chlorine atoms can be removedfrom these compounds in situ. However, ...


  • Abiotic and Biotic Pathways in Chlorinated Solvent Natural Attenuation

    ABSTRACT: Abiotic degradative pathways are often overlooked when evaluating natural attenuation at chlorinated solvent sites. Yet, at many sites, significant degradation of parent compounds such as 1,1,1-TCA, PCE and TCE is observed without the corresponding accumulation of daughter products, a sure indication of abiotic reactions. The problems in integrating abiotic processes into MNA are how to ...


  • Grid and Barrier Treatment Reduces Chlorinated Solvent Contamination

    CASE SUMMARY Manufacturing Facility, Dallas, TX Subsurface investigations at this manufacturing facility revealed chlorinated solvent contamination in the groundwater. The contaminant plume contained significant levels of dichloroethene (cis-DCE) and vinyl chloride (VC) from the natural attenuation of tetrachloroethene (PCE) and trichloroethene (TCE). Well MW-9 contained ...


    By REGENESIS

  • Remediating groundwater contaminated with chlorinated solvents - a Canadian perspective

    Chlorinated solvent contamination of groundwater is a recognized barrier to both potable water use and brownfield site redevelopment in Canada. Several high-profile trichloroethene (TCE) contaminant issues such as those in Cambridge, Ontario, and in Shannon, Québec, have increased public awareness of this problem, and also stimulated the Canadian consulting community to consider the use of in ...


  • Petroleum hydrocarbon and chlorinated solvent case study

    Project Description The site is an active fueling terminal located in Van Nuys, California USA. The site has 1underground storage tanks of petroleum fuel as well as numerous above ground storage tanks for containment of various hydrocarbon and chlorinated solvent compounds. Site Geology Soils at the location consist primarily of interbedded layers of silt, ...

  • Bioaugmentation to Treat Chlorinated Solvents in Fractured Bedrock

    ABSTRACT: An in situ bioremediation pilot study was performed at a former industrial site in New Jersey where groundwater has been impacted by historical releases of chlorinated solvents. The target area for treatment is a fractured, intermediate bedrock zone. The remedial objective at the Site is to treat the groundwater while minimizing the impact of the remedial system on the re-development of ...


    By EOS Remediation, LLC

  • gPRO LP - Chlorinated Solvents - Espanola, New Mexico

    BACKGROUND AMEC Earth & Environmental Inc. is the current consultant INTERA Inc. ...

  • Direct Hydrogen Addition for the In-situ Biodegradation of Chlorinated Solvents

    As a result of their widespread use as solvents, degreasers, and dry cleaning agents, chlorinated aliphatic hydrocarbons (PCE, TCE, DCE, etc.) represent one of the most common and most persistent groups of contaminants found in groundwater. Characteristically, these compounds exist in the form of DNAPLs in the subsurface making efforts at remediation particularly difficult. In-situ bioremediation ...


  • Principles and practices of enhanced anaerobic bioremediation of chlorinated solvents

    PROBLEM STATEMENTThe Department of Defense (DoD) has identified hundreds of sites where groundwater is contaminated with chlorinated solvents; these represent one of the DoD’s largest remediation liabilities. In addition to their use in many industrial processes, chlorinated solvents have historically been used for cleaning and degreasing such diverse products as aircraft engines, automobile ...


    By RNAS Remediation Products

  • Enhanced In Situ Bioremediation of Chlorinated Solvents (PDF)

    Anaerobic enhancement of a shallow confined silty sand aquifer has resulted in a substantial biodegradation of a dissolved Tetrachloroethene (PCE) plume at a former metal finishing facility in Secaucus, New Jersey. The injection of a time-release hydrogen compound (HRC™) rapidly converted ambient aquifer aerobic conditions to anaerobic, and maintained such conditions throughout the 6-month ...


    By REGENESIS

  • Direct Hydrogen Addition for the In-situ Biodegradation of Chlorinated Solvents

    AbstractAs a result of their widespread use as solvents, degreasers, and dry cleaning agents, chlorinated aliphatic hydrocarbons (PCE, TCE, DCE, etc.) represent one of the most common and most persistent groups of contaminants found in groundwater. Characteristically, these compounds exist in the form of DNAPLs in the subsurface making efforts ...


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