gas contaminated groundwater Articles

  • E-Z Trays an Integral Part of Levelland`s Groundwater Treatment - Case Study

    QED E-Z Tray® Air Strippers an Integral Part of Levelland's Groundwater Treatment System The refinery at the former Motor Fuels Corporation produced all grades of gasoline, tractor fuels, diesel, distillate products, and fuel oils. It closed in 1954 after 15 years of operation, and the refinery equipment was removed by 1958. The property has since been redeveloped, but the ...


    By QED Environmental Systems

  • Dressing down groundwater contamination

    Unlike the late Paul Newman, who bottled his special-recipe salad dressing and sold it in supermarkets, Dr. Robert Borden simply mixes up his own 'dressing' and pumps it into the ground. That’s because the environmental engineering professor and his graduate students are more interested in feeding microbes to clean up contaminated groundwater than in making just another Ranch dressing. “It’s ...


    By EOS Remediation, LLC

  • Remediation Of MTBE Contaminated Soil And Groundwater

    Methyl tertiary-butyl ether (MTBE) is a fuel additive made, in part, from natural gas. Since 1979, it has been used in the United States as an octane enhancing replacement for lead, primarily in midand high-grade gasoline at concentrations as high as 8 percent (by volume). Since the mid-1980s, it has been widely used throughout the country for this purpose. It is also used as a fuel oxygenate at ...


    By QED Environmental Systems

  • Gasoline Contaminants in Groundwater - Case Study

    Site Overview Active gas station in Sebring, FL FDEP Site Number: 8629375 Contamination Gasoline contaminants in ground water Two site features that have long been a detriment to chemical oxidant treatments at sites have recently been overcome by EN Rx. These are free product treatment ...


    By EN Rx

  • The Phase 1 Environmental Assessment

    In today’s world where every property is subject to potential environmental risks a Phase 1 Environmental Site Assessment or ESA is an appropriate action to take. An ESA can help determine if the property has been contaminated by previous or current activities. The ESA can help protect the purchaser of a property from environmental risks prior to the closing on a property.  Lenders ...

  • Treating drinking water with 99% removal - Case Study

    QED E-Z Tray® Air Stripper Treating Drinking Water with 99% Removal in Cedarburg, Wisconsin In October 2011, the Cedarburg, Wisconsin Light and Water Utility installed a QED E-Z Tray® (U.S. Patent Number 5,518,668) Air Stripper in a discreet addition to their existing production pump building. The E-Z Tray 72.6 handles a flow rate of ...


    By QED Environmental Systems

  • Multifunctional Well Implemented for In Situ Remediation of Hydrocarbon Contaminations in Soil and Groundwater

    Abstract A recently developed Multifunctional Well has been implemented for the remediation of subsurface contamination caused by hydrocarbon spills. Four different remediation processes can be operated within the same well. At optimal efficiency of each remediation process, successive treatment of the capillary fringes, the vadose zone, and the aquifer can be accomplished. Each treatment ...


  • Case study - Gas plant groundwater remediation

    One-pass trenching method used for a gas plant groundwater remediation project Not many environmental engineers have heard of one-pass trenching and even fewer have actually applied this cutting-edge technology to environmental control and clean-up. However, a growing number of companies are starting to use this technology, resulting in decreased cost of installation and increased system ...

  • Baseline groundwater quality in unconventional oil and gas fields

    In recent years, expansion of unconventional oil and gas production has prompted significant interest in potential impacts on drinking water resources. In many cases, water quality investigations rely on access to landowner water wells to develop baseline data prior to drilling; respond to spills, complaints, or incidents; or evaluate potential impacts due to drilling, completion, hydraulic ...


    By IWA Publishing

  • Case study – condensate contamination

    Site: Natural Gas Wellhead Site (Colorado) Contaminant: BTEX (LNAPL/free product present) Soil Type: Well-sorted sand and gravel Injection Cost: $13,000 (material & labor): Size of Trenches: Approximately 5 feet by 55 feet No. of Trenches: 5 (4 at size above, 1 added in the field - ~5 feet by 21 feet Depth of Trench: ~7 feet below ground surface Goal: ...

  • Groundwater Monitoring Case Study

    Global has been contracted by the Michigan Department of Environmental Quality, Remediation and Redevelopment Division (MDEQ RRD) to conduct quarterly sampling at a former gas station and adjacent property located near a State of Michigan owned public assess site to Torch Lake. The purpose of the sampling is to assure that there are no impacts to the surface water located downgradient of the ...

  • Case study – benzene contamination retail gas station, Colorado

    Introduction The scope of work for this site included an expansion of an existing soil venting system to remediate impacted soil and injection of a carbon-based petroleum degrading product to remediate long-term groundwater impacts. By using a combination of remediation technologies, including LT Environmental’s (LTE) TerraCert™ program, the overall goal of a cost effective cleanup ...

  • Liberating contaminants for easy recovery

    The number one challenge associated with most site remediation designs and methodologies is that 90-95 per cent of all environmental contaminants are present in an adsorbed phase onto soil and bedrock surfaces within both saturated and unsaturated zones. Contaminants, including hydrocarbons (LNAPL), chlorinates (DNAPL) and heavy metals, are sorbed onto the substrates and so have reduced mobility ...


    By Ivey International Inc.

  • Assessment of the PAHs contamination threat on groundwater: a case study of the Niger Delta region of Nigeria

    Contamination of the environment by polynuclear aromatic hydrocarbon (PAHs) is becoming a rising environmental concern. The interest this subject attracts has continually increased by the day because of the threat these compounds pose to human health. Water samples from several hand-dug wells in the Niger Delta region of Nigeria where extensive crude oil production activities take place were ...


    By Inderscience Publishers

  • Case study – BTEX contamination - Colorado

    Site: Former Gas Station (Colorado) Contaminant: BTEX Soil Type: Silty Clays Injection Cost: $8,500 (material & labor) Treatment Area (before): approximately 400 sq. ft. Thickness: 16 to 22 feet bgs Plume Area (after): All contaminates are below groundwater standards Groundwater: varies from 16 to 18 feet ...

  • Case study – condensate-1 contamination

    Site: Natural Gas Compressor Station Contaminant: BTEX Soil Type: Sandy Clays Injection Cost: $60,000 (material & labor) Plume Size (before): 6600 sq. ft. Thickness: 3 feet (18 to 21 feet bgs) Plume Size (after): ~250 sq. ft. Groundwater: 18 to 20 feet ...

  • Contaminated land site investigation in Bristol

    Client: Property Developer Location: Bristol, UK Services: Contaminated Land Risk Assessment, Human Health Risk Assessment, Controlled Waters and Ecological Risk Assessment. Summary: ESI’s contaminated land assessment ensured that this former brickworks site was not registered as contaminated land under Part 2A of ...

  • Case study - Chlorinated groundwater treatment

    Problem A Fortune 50 company implemented a remedial project to collect and treat polluted groundwater from a site in Central New York, preventing the mitigation of impacted groundwater from flowing into local waterways. An engineering and construction firm was hired to design and build an effective, efficient groundwater treatment system. Collection of the polluted water would be done ...

  • One of Europe’s most contaminated sites

    VSD Avenue, a joint venture partnership between VolkerStevin, DEC and Sita Remediation, started work at the beginning of September on the remediation of the former Avenue Coking Works in Chesterfield; one of the most heavily contaminated sites in Europe. Guy Pomphrey, chairman of VSD Avenue, explains The £82m contract, signed in July, was commissioned by the client and site owner the East ...


    By Newzeye Ltd

  • Groundwater: Low-flow Purging and Sampling

    Significant timesavings, improved sample process integrity, quality assurance and minimal quantities of potentially contaminated purge water to manage - are attractive as the focus on groundwater quality sharpens and economics demand best cost-benefit based methods Water has become a vitally important resource.  Maintaining its quality and quantity and avoiding pollution are set to be ...


    By Geotech

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