benzene total Articles

  • EPA Region 9 Case Study (In Situ Gas Thermal Remediation (GTR™))

    In Situ Thermal Remediation was used to successfully treat benzene, TPH-d, TPH-mo, BaP, and Naphthalene from a former gas plant in EPA Region 9. Gas Thermal Remediation (GTRTM), using Thermal Conductive Heating (TCH), raised the temperature of the soils in the treatment zone of the former MGP site to an average temperature of approximately 325 degrees Celsius.  The COC(s) identified at the ...


    By GEO Inc

  • Formaldehyde and Aromatic Volatile Hydrocarbons in the Indoor Air of Egyptian Office Buildings

    Indoor and outdoor measurements of formaldehyde and the aromatic hydrocarbons: benzene, toluene, ethylbenzene, m,p-xylene and o-xylene (BTEX) were conducted at six offices in a suburban area in Giza, Egypt, during the winter 2003-04 season. The mean indoor level of formaldehyde was 59.79ppb in offices where there was no smoking and 85.01ppb in offices where people smoked. The highest mean level ...


    By SAGE Publications

  • Statistical analysis of main and interaction effects during the removal of BTEX mixtures in batch conditions, using wastewater treatment plant sludge microbes

    Biodegradation has proved to be a versatile technique to remediate benzene, toluene, ethyl benzene and xylene (BTEX) mixtures in contaminated soil and groundwater. In this study, a mixed microbial culture obtained from a wastewater treatment plant was used to degrade liquid phase BTEX, at initial concentrations varying between 15 to 75 mg/l. Experiments were conducted according to the 2k-1 ...

  • World’s deepest DNAPL remediation confidential site, Los Angeles, California

    TRS Group, Inc (TRS) provided Electrical Resistance Heating (ERH) for the remediation of DNAPL at 130-feet belowground surface (ft bgs) at a confidential site located in Los Angeles, CA. This is the world’s deepest remediation of DNAPL using an in situ thermal technology. Total volatile organic compounds (VOCs) of concern include etrachloroethene (PCE), 1,1,1-trichloroethane (TCA), ...


    By TRS Group, Inc.

  • Risk assessment and brownfields-determining exposure to site contaminants

    The USEPA’s Brownfields Program was developed to facilitate the rehabilitation of contaminated property for re-development. EPA has set forth criteria that must be met for a revitalized property to be used for residential, commercial or industrial purposes. The main thrust of these criteria is the long-term protection of residents or visitors (including shoppers and business employees). As ...

  • Cleanup levels at an oil distribution and storage station in eastern central Mexico determined from a health risk assessment

    The subsoil of an oil storage and distribution station located in eastern central Mexico was characterised in terms of some fuel fractions and metals. The site was found to be contaminated mainly with total petroleum hydrocarbons (TPHs) at a concentration higher than that legislated in Mexico. The presence of BTEX (benzene, toluene, ethylbenzene and xylenes) and 11 of the 16 USEPA polynuclear ...


    By Inderscience Publishers

  • Impact of carwash discharge on stormwater quality (Toulouse, France)

    The contribution of discharge from carwashes to pollutant levels in stormwater was evaluated. Five carwashes and two outlets in the city of Toulouse (France) were selected. Water samples were collected from December 2006 to December 2007. Concentrations and loadings of classical water quality parameters (conductivity, pH, turbidity, chemical oxygen demand, nitrogen, phosphorus, ammonium, nitrate, ...


    By IWA Publishing

  • Case study: EPA region 9

    ISTR Overview Neighborhood: Industrial Heating Tubes: 14 Target Temp: 325 ˚C Heating Period: 130 Days Target: 0.9 mg/kg for Benzene Contaminant: TPH-d TPH-mo Benzene Naphthalene BaP Geology: ...

  • Successful Pilot Test Results in Full-Scale Treatment of Large BTEX Plume

    CASE SUMMARYRefueling Station – Algonquin, IL Leaking underground storage tanks at a refueling station resulted in a benzene, toluene, ethylbenzene and xylene (BTEX) plume in the underlying sand/gravel aquifer. The plume covered 1-acre and extended 390 feet downgradient from the source area, with a total BTEX concentration exceeding 24,000 parts per billion (ppb). In an ...


    By Regenesis

  • Control VOC`s in Refinery Wastewater

    Oil and water do not mix, like many of life’s one-liners this statement is basically true but not the whole story. Many hydrocarbon liquids, particularly aromatics, have significant solubilities in water: Benzene 1800 PPMVToluene 470Ethyl Benzene 150Xylenes 150 Petroleum refineries do not like salts in their feedstock since these corrode and foul process equipment. The first refining step is ...


    By AMCEC Inc.

  • Improved environmental multimedia modeling and its sensitivity analysis

    Modeling of multimedia environmental issues is extremely complex due to the intricacy of the systems with the consideration of many factors. In this study, an improved environmental multimedia modeling is developed and a number of testing problems related to it are examined and compared with each other with standard numerical and analytical methodologies. The results indicate the flux output of ...


    By IWA Publishing

  • Evaluation of mixing zones in a Latvian–Lithuanian transboundary river basin

    The neighbouring countries of Latvia and Lithuania should use common water assessment methodologies and measures for water management in the transboundary rivers according to EU Water Framework Directive, establishing a framework for community action in the field of water policy. However, there are no national and local legislative acts describing how to harmonise water policy and activities ...


    By IWA Publishing

  • CH#952 - Oil Contaminated Soil

    SITE OWNER: A National Overnight Express Package Company SITE SURVEY: Site and geological surveys revealed a contaminated area north of the facility and west of a diesel tank pit. The cause of the contamination was the result of two (2) underground storage tanks (UST™). One tank contained waste oil while the other contained new oil. Both tanks had ...

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