hydrogeological testing Articles

  • Hydrogeological risk assessment for a proposed landfill

    Client: Waste Management Industry Location: Landfill site, UK Services: Desk study, site investigation and data review, 3D MODFLOW groundwater modelling and hydrogeological risk assessment. Issues: Potential risk to groundwater and surface water, environment and human health.  Landfill containment design ...


    By ESI Consulting

  • Laboratory analysis of the hydrogeological behaviour of rock loose structures on pervious beds

    Large flow interchanges occur between free surface and subsurface flows of river training structures, such as in rock loose chutes based on pervious beds. The filtering action of the base pervious layer can improve the water quality but, at the mean time, reduce the minimum vital flow discharge. This paper, hence, aims to analyse the flow interchanges between the base material and the surface ...


    By Inderscience Publishers

  • Hydrogeologic Investigation of VOC Contamination in Bedrock Using Mass Flux Analysis – A Case History

    Courtesy of US EPA and NGWA proceedings of the 2004 U.S. EPA/NGWA Fractured Rock Conference: State of the Science and Measuring Success in Remediation, September 13-15, 2004, Portland, Maine AbstractA fractured bedrock system was investigated using a combination of hydrogeologic methods to minimize the number and depth of bedrock wells installed during the investigation. These ...


    By Arcadis

  • Las Flores basin hydrogeology, camp Pendleton marine corps base, San Diego County, California.

    The Las Flores basin is located in northwest San Diego County, California, on the Camp Pendleton Marine Corps base. The Las Flores basin is one of four groundwater basins that supply drinking water to Camp Pendleton. Groundwater in the Las Flores basin is extracted from the alluvial aquifer and the San Mateo aquifer located in the coastal basin. The San Mateo aquifer is overlain by unconsolidated ...


    By Hargis + Associates Inc

  • An area matching process to estimate the hydraulic parameters using transient constant-head test data

    A new parameter estimation methodology was established for the interpretation of the transient constant-head test to identify the hydrogeological parameters of an aquifer. The proposed method, referred as the area matching process (AMP), is based on linking the field data to the theoretical type curve through a unique area computed above these curves bounded by a user specified integration ...


    By IWA Publishing

  • Pilot tests lead to full-scale ISCO using sodium permanganate in fractured bedrock

    Two-phase pilot testing of in-situ chemical oxidation (ISCO) using sodium permanganate (NaMnO4) was conducted in 2000-2001 at the Tenneco Automotive site in Hartwell, GA, to evaluate feasibility of using ISCO to remediate a dissolved-phase trichloroethene (TCE) plume in a fractured bedrock aquifer [see May 2004 TNT]. The ISCO pilot was initiated to develop an alternate remedy for the off-facility ...

  • Field testing of a novel concept for automated on-line monitoring of β-D-glucuronidase activity in water resources

    Background and aim of research Direct determination of ectocellular ß-D-glucuronidase activity (GLUC) has been demonstrated as a potential, cultivation-independent, alternative method for the detection of faecal pollution in different water resources (Fiksdal 2008). Here a novel concept for an automated device capable of measuring the GLUC, after filtration of defined volumes of water, ...


    By microLAN B.V.

  • Water Supply and Ground Water Resource Management Projects case study

    Borough of Dublin, Bucks County Hydrogeological Consultant of Record Mercuri and Associates, Inc. was contracted to conduct the necessary hydrogeologic study to identify and recommend test well sites to augment the available water supply. Study was completed on time and on budget and resulted in the identification of eight sites with the potential for ...


    By Mercuri & Associates, Inc.

  • Assessing transmissivity from specific capacity in an alluvial aquifer in the middle Venetian plain (NE Italy)

    Defining aquifer permeability distribution accurately over large areas is often debated in hydrogeology. The operational efforts to calculate hydraulic conductivity with classical aquifer tests are significant; however, accurate knowledge of permeability areal distribution is fundamental both from a hydrogeological and a modeling standpoint. This paper presents an empirical relationship between ...


    By IWA Publishing

  • A New Method to Measure the Effective Porosity of Clays

    The effective porosity is a required parameter for the mass flow rate calculations in groundwater hydrogeology. It is also a useful parameter in geotechnical engineering. In this paper, a methodology based on the tracer analysis technique is proposed to measure the effective porosity of clays. A test apparatus was developed and operational conditions were optimized to measure the effective ...


    By ASTM International

  • Investigating the permeability of fractured rock masses and the origin of water in a mine tunnel in Shandong Province, China

    The coastal Sanshandao mine is threatened by the overlying Quaternary water and seawater. Following an introduction to the geology and hydrogeological conditions in the mine area, a detailed hydrogeological survey and sampling were conducted and hydrochemical and stable isotopic (δ2H and δ18O) tests on various waters were carried out to characterize the origin of water in the mine ...


    By IWA Publishing

  • ATES: a geo-informatics decision aid tool for the integration of groundwater into land planning

    Groundwater is the primary source of drinking water for small municipalities and individuals. However, groundwater can be polluted by almost any land use. Consequently, many governments have acquired groundwater information in the aim of protecting the resource. Nevertheless, the resulting data are often ill-fitted to planning needs. In a previous study, a method was developed to help planners ...


    By IWA Publishing

  • Sources of Groundwater in Crystalline Hard Rocks of Kandy Area, Sri Lanka

    Abstract: Hydrogeological investigations were carried out to obtain sufficient information on groundwater availability in the fractured metamorphic rocks in Kandy district of Sri Lanka. 47 boreholes were drilled with the average depth of 90 metres and 24 high yielding wells were selected and long term pumping tests were carried out for each well using standard methods. The calculated total of ...


  • Above watertable landfill (groundwater risk assessment)

    Client: Waste Management Industry Location: Co-disposal landfill site Services: Hydrogeological risk assessment, landfill monitoring borehole installation, sample collection and data interpretation. Issues: Change in waste stream and potential risk to groundwater,  Summary: ESI provided site ...


    By ESI Consulting

  • Above Watertable Landfill (Groundwater Risk Assessment)

    Client: Waste Management Industry Location: Co-disposal landfill site Services: Hydrogeological risk assessment, landfill monitoring borehole installation, sample collection and data interpretation. Issues: Change in waste stream and potential risk to groundwater,  Summary: ESI provided site ...


    By ESI Consulting

  • Eco-Hydrology

    The Habitats Directive and the Environment Agency’s Restoring Sustainable Abstraction programme (RSAp) have focused attention on a large number of wetland sites across the country. Some of these are large, high profile sites that have been subject to many detailed studies in the past. However, many sites have had little work carried out on them and the behaviour of their hydrological ...


    By ESI Consulting

  • Groundwater discharge downstream of an arid inland river in Northwestern China

    Nalenggele River is an inland river located in the arid, fragile ecological environment area in Northwestern China. Groundwater discharge to the river can significantly impact the ecologic environment in the Nalenggele River basin, but few hydrogeological studies have been conducted in the inland arid basin. In this paper, two sections were chosen to analyze the groundwater discharge in the ...


    By IWA Publishing

  • Detailed hydraulic assessment using a high-resolution piezocone

    Department of Defense (DoD) ground water assessment and remediation projects require cost effective methods for determination of the direction and rate of ground water and contaminant flow. Monitoring wells have typically been used to estimate these parameters. However, detailed three-dimensional ground water and contaminant flow pathways cannot typically be delineated using monitoring well data. ...

  • Modelling of an open loop ground source energy design

    Client: Max Fordham Consulting Engineers Location: London Services: Ground Source Energy Modelling Summary: An open loop ground source heating/cooling scheme is being developed for the redevelopment of the Tate Modern, located close to the River Thames.  ESI Ltd was instructeded by Max Fordham to construct a FEFLOW ...


    By ESI Consulting

  • Quarry impact assessment at Cornelly quarry: tarmac

    The planning permissions for the Cornelly Group of Quarries were subject to review under the provisions of the Environment Act 1995 (ROMP).  They were called in by the National Assembly for Wales (NAW) due to the potential impacts of further working of the quarries; the regulators had particular concern about the potential for dewatering to affect Kenfig Pool and Dunes SSSI (a Special Area ...


    By ESI Consulting

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