groundwater extraction Articles

  • Natural attenuation: better than groundwater extraction?

    Monitored natural attenuation (MNA) was evaluated and implemented in May 2000 as a replacement for groundwater extraction and treatment as the long-term remedy for a chlorinated ethene plume at a Superfund site in Washington (Lehmicke et al. 2000). MNA was approved because the plume met the first two lines of evidence in EPA’s protocol on natural attenuation for chlorinated solvents (U.S. EPA ...


    By Hargis + Associates Inc

  • Water resources and the potential of brackish groundwater extraction in Egypt: a review

    A review of water resources in Egypt indicates that Nile water is fully utilized and the available quantity could potentially decrease by approximately 19% due to proposed water usage by neighboring countries. Seawater desalination and groundwater extraction are the only options to increase Egypt's water supply. The extraction and desalination of brackish groundwater is suggested ...


    By IWA Publishing

  • Overcoming the challenges of using a rainfall–runoff model to estimate the impacts of groundwater extraction on low flows in an ephemeral stream

    Simple modelling approaches such as a spatially lumped, rainfall–runoff model offer a number of advantages in the management of water resources including the relative ease with which groundwater and surface water accounts can be evaluated at the river-reach scale in data-poor areas. However, rainfall–runoff models are generally not well suited for use in ephemeral river systems ...


    By IWA Publishing

  • Significance of enhanced infiltration due to groundwater extraction on the disappearance of a headwater lagoon system: Toluca Basin, Mexico

    Mexico City relies significantly on groundwater resources drawn from the Sistema Lerma well field located in the Toluca Basin, Mexico. Enhanced infiltration caused by groundwater extraction is suspected to be both a prime factor in the disappearance of a lagoon system at the Toluca Basin and a potential risk to long-term groundwater quality. A combined approach of field investigation and ...


    By Springer

  • Toxic dissolved and dispersed hydrocarbon removal in industrial wastewater and groundwater treatment and reuse with the Macro Porous Polymer Extraction Technology

    Abstract The trend to more severe discharge requirements and to polluted groundwater treatment pushed by governments and followed by industries goes together with the development of more advanced water treatment technologies. Nowadays these requirements have gained such high standards that one step further to contaminated water reuse becomes attractive, especially in areas where fresh water ...

  • Impact of Aggregate Extraction Activities on Cold Water Discharge, Groundwater in a Watershed Context (PDF)

    Regional-scale groundwater flow and thermal transport modelling was completed as one component of a multi-disciplinary subwatershed study for a portion of the Credit River, west of Toronto, Canada. Aggregate extraction activities in the area have the potential to alter the groundwater flow system. The concern regards the quantity and temperature of groundwater being discharged to streams and ...


  • Extraction well design for DNAPL recovery.

    The potential for downward migration of dense nonaqueous phase liquid (DNAPL) into deeper portions of a saturated hydrogeologic unit has important implications for successful groundwater remediation. Little information has been published regarding the design of extraction wells that allow DNAPL recovery without simultaneously creating a conduit for cross contamination by vertical migration ...


    By Hargis + Associates Inc

  • Underground gasoline extraction made easier

    The Abanaki PetroXtractor® -Well Oil Skimmer, used for the removal of oil, fuel, and other floating hydrocarbons from water, where access is limited, was recently evaluated by BJAMM Environmental, Inc. of Canal Fulton, Ohio. Working closely with the Ohio EPA and the Bureau of Underground Storage Agency, this group of consultants deal primarily with gasoline stations using underground storage and ...


    By Abanaki Corporation

  • Soil and groundwater remediation

    At a site in northern Indiana on behalf of a multinational client, Troy Risk operated a groundwater remediation system to cleanup the source of chlorinated solvent impact to a groundwater aquifer system. Prior to 1988, the site was occupied by a manufacturing facility. In March 1995, chlorinated volatile compounds (CVOCs) were detected pursuant to due diligence for real estate refinancing. From ...


    By Troy Risk, Inc.

  • Soil and Groundwater Clean-up

    CLIENT: Homeowner/Insurance Company LOCATION: Hopatcong, NJ PROJECT TYPE: Soil and Groundwater Clean-up PROJECT DESCRIPTION: Brennan Environmental, Inc. was retained jointly by a homeowner and their insurance company to complete a soil and groundwater clean-up. An aboveground heating oil tank burst in the basement of their home, spilling approximately 200 gallons of oil onto the floor of ...


    By Brennan Environmental, INC.

  • Analysis of TNT and RDX in groundwater

    MATRIX: Water ANALYTE: TNT and RDX LIMIT OF DETECTION: TNT 1 ppb (mg/L), RDX: 5 ppb (mg/L) BACKGROUND: This application describes a field screening method for determining TNT and RDX concentrations in water. The method uses solid phase extraction to remove and preconcentrate the analytes from water. In the method, a 2 ...


  • Groundwater Asset Management in Mining

    Mike Deed is the author of an interesting article on Groundwater Asset Management in Mining that appeared in the December issue of Geodrilling International. The article focuses on the importance of implementing a regular maintenance programme to control borehole contamination and keep systems running efficiently. ...


    By Geoquip Water Solutions

  • Who Owns Groundwater?

    California’s drought underscores the need to improve how the state - and the rest of us - divvy up a resource in demand. Grapevines march across wires strung along rolling hills, their little trunks improbably supporting heavy black fruit. Cindy Steinbeck’s family has been farming this land since 1920. They grow Zinfandel, Viognier, Cabernet, Merlot, and Petite Syrah grapes but are ...


    By Ensia

  • Explosion proof high vacuum dual-phase extraction

    This an integrated explosion proof system for the simultaneous extraction of soil vapour and groundwater at potentially explosive concentrations. With a pH of 1 to 2, the groundwater was extremely aggresive and required neutralisation.The system included a double header system (high vacuum and low vacuum) enabling simultaneous extraction from small diameter dual-phase extraction lances and larger ...


  • 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

  • Remediation of Metals-Contaminated Soils and Groundwater

    A range of technologies is available for remediation of metals-contaminated soil and groundwater at Superfund sites. General approaches to remediation of metal contamination include isolation, immobilization, toxicity reduction, physical separation and extraction. These general approaches can be used for many types of contaminants but the specific technology selected for treatment of a ...


    By Richflood International Ltd

  • Groundwater remediation with Hydrogen Release Compound

    A substantial manufacturing site in Harlow, Essex, was contaminanated with chlorinated solvents used in degreasingoperations. The main compounds of concern were trichlorethene (TCE), trichlorethane (TCA) carbon tetrachloride (CT) and daughter products. The groundwater was at a depth to water of approximately 1.75m with a river around 600m to the north. Glacial deposits included variable clay ...


    By REGENESIS

  • The In Situ Bioremediation/Groundwater Remediation Process

    In-situ groundwater bioremediation is a technology that encourages growth and reproduction of indigenous microorganisms to enhance biodegradation of organic constituents in the saturated zone. In-situ groundwater bioremediation can effectively degrade organic constituents which are dissolved in groundwater and adsorbed onto the aquifer matrix. The Adventus In Situ Bioremediation/Groundwater ...


  • Andover, Vapor Extraction and Refrigerated Condensation Case study

    Vapor Extraction and Refrigerated Condensation was used as a primary source removal technology to remediate high concentrations of recalcitrant chlorinated solvent compounds at the WDE Site in Minnesota. The use of Refrigerated Condensation has achieved high mass removal rates and will reduce the lifecycle costs and time of remediation. History 6,600 drums of hazardous ...

  • Why it’s time to elevate groundwater

    Groundwater stored in the earth’s crust underpins all our lives – the ultimate source of freshwater for billions has become victim of over-extraction and the ultimate sink for pollutants.   For too long, not enough has been done to regulate the use of this precious, on-demand resource and manage disposal of waste. If rates of groundwater depletion have tripled in the past 3 ...


    By The World Bank

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