aquifer profiling Articles

  • IEG multi level sampling well (MLSW) case study - IEG Technologie GmbH

    The MLSW-system is used for the recovery of multiple high-quality samples of soil-gas and groundwater from numerous isolated horizons in a single standard borehole. The system is also used to accurately delineate contamination profiles in three dimensions, which is vital or the design, installation and monitoring of remediation systems. MLSWs also can be used for activly dispersing substances ...


    By IEG Technologie GmbH

  • Water quality dependence on the depth of the vadose zone in SAT-simulated soil columns

    ABSTRACTThree soil aquifer treatment (SAT) columns were operated for five months to investigate the dependence of the treated water quality upon the depth of unsaturated vadose zone in terms of its organics, nitrogen and phosphorus contents. It was found that DOC removal was independent of the unsaturated vadose zone depth except during the initial flooding period when the effluent was injected ...


    By IWA Publishing

  • Denitrification during vertical upwelling at an alluvium–diluvium interface below the upland perimeter of a Riparian paddy

    Received for publication May 4, 2008. Denitrification hotspots in riparian aquifers often develop in a relatively narrow zone at the upland–riparian interface, where nitrate-rich ground water of upland origin interacts with available soil organic carbon. In riparian paddy fields, denitrification in the aquifer has received less attention than that in the surface water and soil. This study aimed ...

  • Comparison of Eight Innovative Site Characterization Tools Used to Investigate

    Environmental assessment of contaminated sites often requires delineation of the pathways of contaminant migration. Often, the pathways are strongly affected by the subsurface geology. At Vandenberg AFB in California, an accidental release of gasoline containing MTBE occurred at a base gasoline station in 1994. Dissolution of the gasoline into groundwater has created a dissolved MTBE plume at ...


    By Solinst Canada Ltd.

  • Potential soil characteristics for riverbank filtration using 2-D ground resistivity in Kota Lama Kiri, Kuala Kangsar

    Identifying the subsurface profile for riverbank/bed filtration (RBF) using conventional methods such as drilled boreholes is usually labor intensive, costly and acquires only 1-D profiling. Hence, a 2-D ground resistivity method was used as an alternative to obtain a 2-D subsurface profile by extending to 200 m length at Kota Lama Kiri, Kuala Kangsar, Perak site area. Four resistivity survey ...


    By IWA Publishing

  • Assessing the transport and fate of MTBE

    Untitled Document ...


    By Solinst Canada Ltd.

  • Using solver to determine vertical groundwater velocities by temperature variations, Purdue University, Indiana, USA

    Vertical groundwater velocities can be estimated based on directions of groundwater thermal gradients. Temperature-depth profiles were obtained from 12 monitoring wells at 3 different times of the year (Fall, Winter, and Spring) in West Lafayette, Indiana (USA) mainly on the Purdue University campus. Microsoft Excel Solver was used to match plots of groundwater temperature distribution in the ...


    By Springer

  • Pump/Recharge Rate Affects Saltwater Intrusion

    Untitled Document Many areas of the world use groundwater as their main source of fresh water supply. With the worlds population increasing ...


    By Solinst Canada Ltd.

  • Integrated local water supply plan

    Client: City of Wichita, Kan. Completion Date: June 2001  Services Provided Water supply planning Evaluation of alternatives Cost estimating Economic comparison Environmental studies (NEPA) Program management Hydrogeologic engineering Water quality monitoring ...


    By Burns & McDonnell

  • Reversing hydrology: quantifying the temporal aggregation effect of catchment rainfall estimation using sub-hourly data

    Inferred rainfall sequences generated by a novel method of inverting a continuous time transfer function show a smoothed profile when compared to the observed rainfall, however, streamflow generated using the inferred catchment rainfall is almost identical to observed streamflow (Rt2 > 97%). This paper compares the effective rainfall inferred by the regularised ...


    By IWA Publishing

  • Differential Stimulation of Haloreduction by Carbon Addition to Subsurface Soils (PDF)

    Highly substituted ethenes such as PCE and TCE are susceptible to microbial reductive dehalogenation and halorespiration under anaerobic conditions. The objective of this study was to evaluate whether soil from a bulk aerobic aquifer, historically contaminated with chlorinated ethenes (CEs), could be made anaerobic by carbon source addition to enhance haloreduction, and to evaluate how the ...


    By Regenesis

  • Fold geometry model of Coyote hills segment of Puente hills blind-thrust system applied to interpretation of long-term water level data

    Recent work by others along the Coyote Hills segment of the Puente Hills blind-thrust system has imaged the near-surface structural features generated by activity of that intrabasin fault. Published shallow seismic profiles near the south flank of the Coyote Hills indicate the blindthrust system is expressed by south-facing folding of Quaternary terrestrial sediments underlying the hills. ...


    By Hargis + Associates Inc

  • Use of reclaimed water and stormwater for wetland restoration on a municipal wellfield: evaluating potential impacts to public health

    The Section 21 Wellfield is located in northwest Hillsborough County, Florida. Wetlands and lakes within the wellfield have been impacted by historic wellfield pumping-related activities and local land development activities. The Section 21 Wellfield Restoration Project is a multi-agency effort designed to assess whether surface water and/or reclaimed water are viable water sources for wetland ...

  • Use of Reclaimed Water and Stormwater for Wetland Restoration on a Municipal Wellfield: Evaluating Potential Impacts to Public Health

    The Section 21 Wellfield is located in northwest Hillsborough County, Florida. Wetlands and lakes within the wellfield have been impacted by historic wellfield pumping-related activities and local land development activities. The Section 21 Wellfield Restoration Project is a multi-agency effort designed to assess whether surface water and/or reclaimed water are viable water sources for wetland ...

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