free phase petroleum contamination Articles

  • Slurry Phase Biological Treatment

    Slurry phase biological treatment involves the controlled treatment of excavated soil in a bioreactor. The excavated soil is first processed to physically separate stones and rubble. The soil is then mixed with water to a predetermined concentration dependent upon the concentration of the contaminants, the rate of biodegradation, and the physical nature of the soils. Some processes pre-wash the ...

  • Ivey-Sol 103 successfully treats free-phase impacted shale via on-slte washing

    Undisclosed Site, Ontario, 2008 Environmental investigation of a grass-covered area uncovered free phase petroleum in fractured, weathered shale. A pilot project was undertaken by Terratechnik Ltd. to excavate the shale and treat it by washing with a non-ionic surfactant, Ivey-Sol® 103. Ivey-Sol Benefits Operates below the critical micelle ...


    By Ivey International Inc.

  • Enhanced Aerobic Bioremediation of Petroleum UST Releases in Puerto Rico.

    Abstract: Releases of petroleum compounds from underground storage tanks (USTs) containing diesel fuel and gasoline are a serious and increasingly prevalent problem in Puerto Rico. Remediation of groundwater impacted by these releases utilizing common methodologies can be quite costly and require long periods of time to implement. Oxygen is often the limiting factor retarding optimal ...


    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 ...


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  • Grade `A` remediation - selective phase transfer technology cleans up college in Moncton, New Brunswick

    Remedialing sensitive areas or population dense areas can be tricky at the best of times. So it's important to utilize a remediation technology with a proven record of reducing environmental and health and safely risks in order to avoid associated legal liability for project stakeholders, among other reasons. Ivey International Inc. is a Canadian company with offices in Campbell River, B.C., ...


    By Ivey International Inc.

  • Groundwater pump & treat and SIPEX skimmimg system

    GRS has supplied and installed a system for the abstraction of free-phase floating creosote contamination. The system comprises frequency controlled submersible pumps for precise hydraulic control and our motorised interface tracking system which, due to large local water table fluctuations, was modified to provide a product/water interface tracking range of 5m.Abstracted groundwater is pumped to ...


  • Nyack MGP Site (Isotec Case Study 29)

    Site Location: Nyack, NY Contamination: Bedrock contaminated with non-aqueous phase liquid (NAPL) and MGP-related compounds. Primary contaminants of concern (COCs) include volatile organic compounds (VOCs), Poly-nuclear aromatic hydrocarbons (PAH's) and total petroleum hydrocarbons (TPH). Levels of COCs reached 6 mg/l for VOCs and 1,200 mg/l for PAHs in the dissolved phase and 8,500 mg/l for ...

  • Emergency response and remediation of a petrol leak: petrol filling station

    Project: Emergency Fuel Leak at an Operational Petrol Station Client: Franchised petrol station operator Services: Emergency response/leak management, regulator negotiation, site investigation, remediation and verification Summary: Responsive, pragmatic advice and robust regulator negotiations aided rapid characterisation ...

  • Significant Benefits of Augmenting an Extractive Remedial System with RegenOx™

    Recently, in the United Kingdom, a combined strategy was implemented to synergistically increase the treatment rate and efficiency of subsurface remediation while also reaching an inflexible remedial deadline cost-effectively. Central to this was the novel exploitation of a feature of RegenOx that was initially designed for an alternative purpose. The remedial strategy is now being widely used on ...


    By REGENESIS

  • Integrated solar and wind energy powers oil recovery system

    Recovery of free-product petroleum at the former St. Croix Alumina (SCA) site in Kingshill on St. Croix, VI, is addressing ground-water contamination caused by past releases of fuel and refined petroleum at SCA. The oil recovery system employs wind-driven turbine compressors (WTCs), wind-driven electric generators (WEGs), and photovoltaic (PV) panels to power pneumatic and electric submersible ...

  • Engineered wetland removes subsurface hydrocarbons while providing beneficial reuse

    British Petroleum (BP) is operating an engineered wetland to treat petroleum-contaminated groundwater at a 300-acre site in Casper, WY. Release of petroleum products during refinery operations from 1908 until 1991 resulted in significant petroleum hydrocarbon contamination. Over 44,000 yd3 of LNAPL were removed by dual-phase recovery wells and oil/water separators constructed in 1981, but ...

  • No Negative Impacts to Underground Infrastructure and Communication Lines using RegenOx at Site with High Concentrations of TRPH

    Kennedy Space Center, FL The Launch Equipment Shop (LES) at Kennedy Space Center, part of NASA's famed Vehicle Assembly Budding complex, has conducted highly specialized manufacturing fabrication, and assembly work for the space program since the early 1960s. Leaks from an underground storage tank (UST) led to notable fuel oil contamination of soil and groundwater, including a layer of ...


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  • Presumptive Remedies

    A presumptive remedy is a technology that EPA believes, based upon its past experience, generally will be the most appropriate remedy for a specified type of site. EPA is establishing presumptive remedies to accelerate site-specific analysis of remedies by focusing the feasibility study efforts. EPA expects that a presumptive remedy, when available, will be used for all CERCLA sites except under ...

  • Biological Wastewater Treatment

    Untitled Document The use of microorganisms to remove contaminants from wastewater is effective and widespread. To choose the right system from the many options offered, ...


  • 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 ...

  • Concerns Related to Environmental Hazards

    Environmental site assessment assists the commercial developers to know any existing or the potential environmental Hazards or the liabilities seen in exact property. Well every commercial developer needs guarantee that their money is well invested. It works only through environmental monitoring assessment report that generally looks at physical improvements which need to be doe and underling ...


    By Soldata Limited

  • 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 ...

  • Bioventing systems at Alaska air force base achieve cleanup closures

    The U.S. Air Force and Alaska Department of Environmental Conservation (ADEC) collaborated in installing and operating seven full-scale bioventing systems over the last 10 years to address hydrocarbon and VOC contamination at the King Salmon Airport (KSA) in Alaska. Five of the systems achieved cleanup closure within five years of operation, and another is currently under closure review. The ...

  • Moisture in Oils: The Three-Headed Beast

    Abstract Moisture contamination in in-service lube oils is perhaps one of the most destructive forms of engine corrosion second only to particle contamination.  Water contamination in oil can be categorized into three forms of water; Free, emulsified, and dissolved.  All forms of water have direct consequences to the oil and gears of the engine, but indirect consequences as ...


    By Arizona Instrument LLC

  • Integrated Environmental Risk Management in Real Estate Transactions

     Traditional risk management posits a rational, five-step process for managing risks. The outstanding differences between this traditional process and the environmental risk management process lie in the technicality and complexity of step one (identifying and analyzing environmental risk) and of the first part of step two (examining the feasibility of  alternative risk management, ...

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