underground contaminant plumes Articles

  • Bacteria devours gasoline plume

    The new environmental technology essentially flushes contamination out of the soil. NORTHAMPTON - With hungry bacteria and reusable carbon filters, an engineering company is slowly but surely removing a massive plume of gasoline from beneath a busy section of Pleasant Street. Traffic and business activity haven't had to skip a beat as Penney Engineering, of Mansfield, cleans up the ...


    By Penney Engineering, Inc

  • 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

  • A forensic study to differentiate two dissolved gasoline plumes at adjoining service stations

    Three gasoline service stations are present at a highway intersection in central New Jersey. In the mid- to late- 1980s, service station “B” began to notice large discrepancies in their gasoline inventory. The USTs were removed in 1988 and a significant release was discovered. Separate-phase gasoline, as much as 1.5 feet (0.5 m) thick was present on the water table for about an area ...


  • 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 ...


    By BIO-SYSTEMS International

  • 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

  • Combining HVME and Enhanced Bioremdiation for Gasoline Contamination in Groundwater.

    ABSTRACT A leaking underground storage tank at a commercial petroleum retail site located in Haskell, Texas resulted in soil and groundwater petroleum hydrocarbon contamination. This contamination, including benzene, toluene, ethylbenzene, and total xylenes (BTEX) and total petroleum hydrocarbons (TPH) migrated down-gradient below a road and neighboring property. Access below the adjacent roadway ...


    By REGENESIS

  • Combining HVME and Enhanced Bioremediation for Gasoline Contamination in Groundwater

    A leaking underground storage tank at a commercial petroleum retail site located in Haskell, Texas resulted in soil and groundwater petroleum hydrocarbon contamination. This contamination, including benzene, toluene, ethylbenzene, and total xylenes (BTEX) and total petroleum hydrocarbons (TPH) migrated down-gradient below a road and neighboring property. Access below the adjacent roadway was ...


    By REGENESIS

  • Shield Environmental Assoc. Defeats Bedrock Contamination with BOS 200® at Truck Stop

    Shield Environmental Associates (Lexington, KY) has faced some daunting challenges over many years of successful service to their clients, but this one was remarkable. The Problem: A 320 foot long dissolved BTEX plume in both shallow and deep zones in lithology very unfriendly to direct push sampling or injections. The Team: Shield Environmental Associates ...

  • Remediation of silty-clay hydrocarbon contaminated site using Ivey-sol selective phase transfer technology

    Earlier this year, Ivey International Inc. secured its first remediation project in Alberta using its Ivey-sol Selective Phase Transfer Technology (SPTT). This patented technology is being used to treat extensive soil and groundwater contamination at an active service station in Red Deer, Alberta. With a residential area nearby, the environmental sensitivity is relatively high. Unfortunately, ...


    By Ivey International Inc.

  • 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 ...

  • On-Site Analysis of Gasoline Range Organics (GRO) in Soil and Groundwater Using Field Portable Purge and Trap GC / FID / PID

    Although leaking underground storage tanks account for the majority of gasoline contamination in soils and groundwater, other events such as accidents during product transportation or delivery are also significant. Spill clean-ups and tank replacements have an immediacy to them due to the very steep relationship between delay and cost. Since gasoline is highly mobile in the environment, it is ...


    By Buck Scientific Inc

  • Optimisation approach for pollution source identification in groundwater: an overview

    Groundwater pollution occurs from different anthropogenic sources like leakage from Underground Storage Tanks (USTs) and depositories, leakage from hazardous waste dump sites and soak pits. Remediation of these contaminated sites requires optimal decision-making system so that the remediation is done in a cost-effective and efficient manner. Identification of unknown pollution sources plays an ...


    By Inderscience Publishers

  • Initial stages of pollutants dispersion around municipal waste disposal facilities: a case study in Northern Portugal

    The combined use of several geological, geochemical and geophysical observations during six years enabled the detection of a very faint halo of chemical contamination induced by the operation of a young waste disposal facility in Northern Portugal. The halo does not classify as pollution by any standards, but is observed to be intensifying and thus signals a potential hazardous situation in ...


    By Inderscience Publishers

  • BTEX remediation in groundwater

    BTEX contamination in groundwater from a leaking underground storage tank was cost-effectively treated with two applications of Petrox. This project demonstrates the rapid degradation of petroleum components when high populations of Petrox aerobic microbes are injected. The pre-treatment concentrations of Toluene and Xylene were 1,198ppb and 2,408 ppb, respectively. Ten units of Petrox aerobic ...


    By CL Solutions, LLC

  • Case study - EPH in soil with No. 6 fuel oil

    No. 6 fuel oils (heavy fuel oil, bunker C oil) is often used in industry for heat, steam or power generation. A consultant used Sitelab to investigate two different spill sites contaminated with subsurface plumes of NAPL resulting from leaking underground storage tanks (USTs). Soils were collected from borings using a drill rig and field screened for their EPH aromatic content. Split samples ...


    By Sitelab Corporation

  • Modelling to assist risk assessment and remedial strategy development for a petrol spill

    Client: Confidential: Petroleum Retailer Location: Luton, UK Services: Groundwater modelling, contaminant transport modelling, remediation strategy development Summary: Groundwater modelling demonstrated that hydraulic containment of a contaminant plume could effectively protect a public water supply in the medium term, ...

  • Site Closure Sought after using ORC® Biobarrier to Enhance Aerobic Biodegradation of MTBE and TPHg

    CASE SUMMARY Former Service Station - Bishop, CA Extensive methyl tertiary-butyl ether (MTBE) and total petroleum hydrocarbons as gasoline (TPHg) contamination was discovered within the subsurface as a result of leaking underground storage tanks (USTs) at a former service station. Following the removal of the leaking USTs, a total of 1,192 cubic yards of gasolineimpacted ...


    By REGENESIS

  • 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 EOS Remediation, LLC

  • Gas station: Stuart, Florida

    Aerobic bioremediation with air sparging Site Description Underground storage tank (UST) leaks from a gas station contaminated shallow ground- water under the property. Following the removal of the leaking USTs and impacted soils around the tank cavity, combined air sparging and aerobic bioremediation was implemented to remediate the groundwater. Site ...


    By CL Solutions, LLC

  • Pilot Scale Remediation of BTEX, MTBE, Naphthalene, Isopropylbenzene, and Trimethylbenzene

    Site Summary Michigan’s Department of Environmental Quality (Environmental Response Division) has spearheaded efforts to clean up concentrations of petroleum compounds associated with two former underground storage tanks. A field pilot study was performed to determine the effectiveness of ORC in treating the on site petroleum hydrocarbon contamination.Approximately 3,720 lbs. of ORC were ...


    By REGENESIS

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