subsurface site investigation Articles

  • Assessment of geo-hazard potential and site investigations using Resistivity Imaging

    The use of geophysical methods for evaluating subsurface contamination of sites is becoming increasingly popular all over the world. The paper presents the assessment of geo-hazard potential of a site in the City of Duncanville, Texas using Resistivity Imaging (RI). Resistivity Imaging was being used to identify areas of environmental concern and to develop a detailed image of subsurface ...


    By Inderscience Publishers

  • 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.

  • Evaluation of Spatial and Temporal Variability in VOC Concentrations at Vapor Intrusion Investigation Sites

    ABSTRACT As vapor intrusion has become an increasing concern at corrective action sites, the USEPA and a number of state regulatory agencies have recently issued guidance documents covering the collection of subsurface gas, and above-ground air samples during vapor intrusion investigations. Most of these guidance documents do not provide specific recommendations concerning the number of each ...


  • Integration of Subsurface Data Management and GIS to Facilitate Model Calibration

    Abstract The development of numerical codes, as well as pre- and post-processors to support these codes, has made the discipline of groundwater modelling increasingly more automated and efficient. The value of such modelling is reliant on the site-specific data used to build and calibrate the models. The integration of EarthSoft's EQuISÒ Geology and any of several popular modelling environments ...


    By EarthSoft, Inc

  • An investigation of the surface and groundwater leachate from an old waste disposal site at Mamak, Ankara, Turkey

    Mamak solid waste disposal site covers an area of approximately 0.5 square kilometre and the amount of waste it holds is around 13 × 106 m?. The amount of leachate measured through a weir at the toe of the body of waste is 164,000 m3? per annum. It is calculated that approximately 130,000 m? of this amount directly comes from the waste. Owing to the retention of precipitation by wastes, it takes ...


    By Inderscience Publishers

  • Triad use at Naval Base San Diego saves an estimated 6 years and US$3m for site investigation

    The U.S. Naval Facilities Engineering Command Southwest (NAVFAC SW) used the Triad approach to collect an integrated hydrogeologic and chemical dataset for expediting and optimizing characterization of a volatile organic compound (VOC) plume at Naval Base San Diego (NBSD), CA. The 295-acre 'IR Site 22' was identified in 2003 when VOC concentrations reaching 100 mg/L were reported in an upgradient ...

  • Spolchemie site remediation and NanoRem field site application

    Site Remediation The Spolchemie site was chosen as one of the NanoRem case study sites, to test two types of nanoparticles (NPs) (zerovalent iron - nZVI and iron oxide NPs) for in situ remediation of BTEX (Benzene, Toluene, Ethylbenzene, and Xylenes) contamination. Nanoremediation was seen as an opportunity to enhance the in situ biodegradation of the BTEX contaminants and to reduce the ...


    By NANO IRON s.r.o.

  • Subsurface iron and arsenic removal: low-cost technology for community-based water supply in Bangladesh

    The principle of subsurface or in situ iron and arsenic removal is that aerated water is periodically injected into an anoxic aquifer through a tube well, displacing groundwater containing Fe(II). An oxidation zone is created around the tube well where Fe(II) is oxidised. The freshly formed iron hydroxide surfaces provide new sorption sites for soluble Fe(II) and arsenic. The system's efficiency ...


    By IWA Publishing

  • TCE at Department of Defense Landfill Site

    PROJECT BACKGROUND Subsurface investigations at this 40-acre Northern California Department of Defense (DOD) landfill site revealed elevated levels of TCE in site soils and groundwater. This discovery was made through routine site monitoring, as regulated by the state of California solid waste landfill regulations. Regulators required site cleanup to reduce chlorinated hydrocarbon concentrations ...


    By REGENESIS

  • Phase I and Phase II environmental site assessment

    Troy Risk was approached by Keep Indianapolis Beautiful, Inc. (KIBI) to complete a combination Phase I Environmental Site Assessment and Phase II Subsurface Investigation, on a multi-lot parcel that would be KIBI’s new headquarters building. Troy Risk performed the Phase I / Phase II on a not-for-profit basis in support of the merit of KIBI’s mission. The historical use of the ...


    By Troy Risk, Inc.

  • Rapid Reduction of VOCs Results in Site Closure

    Summary Subsurface investigations at a dry cleaning facility revealed elevated levels of PCE and other regulated daughter products. A remediation technology was needed that could cost-effectively reduce the contaminants to the Washington Department of Ecology’s (WDOE) cleanup levels. HRC was chosen for groundwater remediation due to its ability to provide a low cost solution for site ...


    By REGENESIS

  • Integrated Environmental Site Characterization and Analysis: EQuIS in the Military (PDF)

    The seamless integration of subsurface environmental geology and analytical chemistry data with the latest tools and technology for data management and analysis make site characterization and investigation more efficient than ever before. EarthSoft’s Environmental Quality Information System—EQuIS—has been chosen by many military agencies and organizations for the management of analytical ...


    By EarthSoft, Inc

  • Identification of source of heavy metal contamination in a site - a case study

    Accidental spills and improper disposal of industrial effluent/sludge containing heavy metals onto the open land or into subsurface result in soil and water contamination. Detailed investigations are carried out to identify the source of contamination of heavy metals in an industrial suburb near Bangalore in India. Detailed investigation of ground water and subsurface soil analysis for various ...


    By Inderscience Publishers

  • Site Closure Strategies: Reducing Remediation Liabilities & Costs

    Industrial companies face the daunting task of managing investigations and clean-ups at thousands of contaminated properties. In staying abreast of new technology and ever-evolving regulatory programs, companies must address many challenges involving regulations, technologies, and expenses. To successfully manage the costs and risks for each project, it is important to: 1) Focus on the ultimate ...


    By AECOM

  • High-Resolution Site Characterization with Multilevel Systems

    Within the last few years, the U.S. EPA added a new focus area on high-resolution site characterization (HRSC) to their Contaminated Site Clean-Up Information (CLU-IN) website. The U.S. EPA’s definition of HRSC is: “High-resolution site characterization (HRSC) strategies and techniques use scale-appropriate ...


    By Solinst Canada Ltd.

  • High Levels of Chlorinated Solvents Reduced to Non-Detect; Site Receives Closure

    CASE SUMMARY Manufacturing Facility, Europe The subject site has been used for the manufacture of industrial switchgear assemblies and warehousing since the 1970s. A subsurface investigation revealed a highly localized plume near WS10 with significant groundwater concentrations of trichloroethene (TCE) at 260 parts per million (ppm) along with its breakdown product ...


    By REGENESIS

  • Case study - EPH in soil evaluation study at tank farm site

    Ambient Engineering, Inc. (Concord, MA) used Sitelab to investigate and remediate a former tank farm along Boston Harbor contaminated by a large, subsurface plume of commingled diesel fuel and No. 6 fuel oil. Ambient’s Licensed Site Professional (LSP) had the opportunity – and budget – to evaluate Sitelab against three certified laboratories. Soil samples were collected from ...


    By Sitelab Corporation

  • Former Dry Cleaning Site Contaminated with PCE - Case Study

    In-Situ® Inc. TROLL® 9500 Multiparameter Sonde helps resolve treatment challenges and saves $200,000 in drilling, reagents, and consulting. A former dry-cleaning site in the Pacific Northwest, Ultra Custom Care Cleaners, was found to be contaminated with PCE (perchloroethylene). According to the U.S. Geological Survey (USGS), PCE was widely used in the dry cleaning of fabrics since the ...


    By In-Situ, Inc.

  • BOS 200 LNAPL Remediation at budget rental car site in Louisville, Kentucky USA

    Background Information The Budget Rental Car Site was a former retail gasoline and diesel service station existing on approximately 3 acres located in Louisville Kentucky, USA. The investigation and corrective action work conducted at the facility was under the oversight of the Kentucky (KY) Department for Environmental Protection (KDEP), Division of Waste Management (DWM), Underground ...

  • Reactive core mat installed as NAPL control remedy at vermont superfund site case study

    Project: Pine Street Canal Superfund Site Location: Burlington, Vermont U.S.A. Products: Reactive Core Mat Organoclay Organic Adsorption Media Background: A manufactured gas plant operated at the Pine Street Canal site from 1895 to 1966. The plant disposed of wastes from the gasification process, including coal tars, which ...


    By CETCO

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