groundwater detection Articles

  • Train derailment prompts contaminated land investigation

    On March 30th 2015 a long freight train, transporting a variety of goods including lumber and chemicals, wound its way through the state of Mississippi. At around 5pm, part of the train failed to negotiate a curved portion of the track in a rural area near Minter City, resulting in the derailment of nine railcars, one of which leaked chemicals onto agricultural farmland and woodlands. Emergency ...


    By Gasmet Technologies Oy

  • GE Leakwise Application Notes: Leak Detection by Groundwater Monitoring

    Risks of Groundwater Contamination Hydrocarbon leakage, from Underground Storage Tanks (USTs) and from the bottoms of above ground tanks, can seep into the groundwater, where it forms a floating oil sheen, or a thick oil layer. This layer, if left undetected, ...


    By GE Analytical Instruments

  • Radon distribution in groundwater of Taiwan

    Radon levels were surveyed in 517 monitoring wells constructed in five major groundwater areas of Taiwan. The radon concentration in groundwater samples varied in a wide range from below the detection limit of 18 pCi/L up to 1,100 pCi/L. A worldwide comparison of reported groundwater radon levels was conducted. Overall radon levels in Taiwan groundwater are relatively low compared to other ...


    By Springer

  • 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.

  • Uranium in Groundwater - Case Study

    Customer: Mew Mexico – Espanola Valley Water Clinic Application: Metals analysis in ground water Description: Groundwater samples were submitted by well owners from different regions of New Mexico (around Espanola region) at a water clinic sponsored by the Good Water Company (Testing Service). ...


    By ANDalyze, Inc.

  • Detection of semi-volatile organic compounds (SVOCs) in surface water, soil, and groundwater in a chemical industrial park in Eastern China

    China is suffering from serious water and soil pollution, especially in the North China Plain. This work investigated semi-volatile organic compounds (SVOCs) in surface water, groundwater and soil within a chemical industrial park in Eastern China, for which the volatile organic compound (VOC) results have been previously reported. A total of 20 samples were collected from the field, and ...


    By IWA Publishing

  • Dynamics of nitrate & perchlorate in groundwater.

    The Apache Powder Superfund Site is located in Cochise County, Arizona, approximately 50 miles southeast of Tucson. The site was listed on the National Priorities List pursuant to CERCLA in 1990. Principal groundwater chemicals of concern (COCs) include nitrate-nitrogen (nitrate-N) and perchlorate. Concentrations of nitrate-N exceeding 500 mg/l and 2,300 mg/l have been detected in the “shallow ...


    By Hargis + Associates 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 ...


  • Bioremediation of groundwater at a gas station in PA

    The target compounds detected in the source area wells (MW-1, OW-A, and OW-B) decreased during the eight quarterly sampling events performed since the injection of HydroRemed. These compounds included benzene, ethylbenzene, naphthalene, toluene, 1,2,4-TMB, and 1,3,5-TMB. During the last three quarters (November 2011 to May 2012), the only target compounds 1,2,4-TMB and 1,3,5-TMB, were drastically ...


    By Sarva Bio Remed, LLC

  • Detection of vanA and vanB genes in vancomycin-resistant enterococci (VRE) from groundwater using multiplex PCR analysis

    A total of 22 groundwater samples were randomly collected from three rural communities in the Mafikeng area. Bile esculin agar was used for selective isolation of enterococci. Standard preliminary tests (Gram staining, oxidase test, catalase test) and confirmatory tests (Prolex™ Streptococcal Grouping Rapid Latex Agglutination test kit) were used to determine the identities of presumptive ...


    By IWA Publishing

  • New Spanish regulation on groundwater protection

    On 22 October it was issued Royal Decree 1514/2009 regulating the protection of groundwater against pollution and deterioration. The legal framework of this Royal Decree is formed by Directive 2000/60/EC (WFD) in particular Article 17, and Directive 20006/118/EC. The main objectives are to prevent or limit groundwater pollution and to establish criteria and procedures to assess their chemical ...

  • Soil and groundwater assessment, Northern England

    Project Remediation Strategies were appointed to assist in the identification of a hydrocarbon contamination source that had resulted in significant vapours within a residential property. Further works to asses the nature and extent of soil contamination were also commissioned, together with detailed vapour risk assessments and subsequent vapour remediation works. ...


    By Remediation Strategies Ltd.

  • Leaks and spills - LNAP and DNAPL detection and clean up

    Any tank can leak. Most leaks can be cleaned up and responsible operators need equipment that does what’s needed. With an ATEX Zone 0 certified interface meter site operators can successfully achieve LNAP and DNAPL detection when monitoring petrochemical sites, tank farms, petrol station forecourts, landfills or remediation sites. If site technicians detect ...

  • Treatment of Explosives-Contaminated Groundwater by In Situ Cometabolic Reduction

    Untitled Document ABSTRACT: Earth Tech Inc. has completed the first field-scale demonstration of in situ explosives-contaminated groundwater treatment by cometabolic ...


    By REGENESIS

  • Detection of alachlor and its sulfonic acid metabolite in water

    MATRIX: Groundwater, surface water and well water ANALYTES: Alachlor and its major soil metabolite, ethane sulfonic acid (ESA) LIMIT OF DETECTION: Alachlor: 5 ppt to 500 ppt (for 10 mL sample) 0.5 ppt to 50 ppt (for 100 mL sample) ESA: 30 ppt to 3 ppb (for 10 mL sample) 3 ppt to 300 ppt (for 100 mL sample) ...


  • Anaerobic Bioremediation of Groundwater Using Edible Oil Substrate EOS® In an Unconfined Groundwater Aquifer

    ABSTRACT: To treat groundwater contaminants in situ, enhanced anaerobic bioremediation processes can be stimulated through addition of soluble substrates. At a dry cleaners site located in San Jose, California, the goal was to find a substrate that is long lasting and easily distributed into the saturated soils. After evaluating several alternatives, in situ bioremediation using an emulsified ...


    By EOS Remediation, LLC

  • In situ Chemical Oxidation: An Innovative Groundwater Remediation Technology

    A promising new technology, in situ Chemical Oxidation (ISCO), has the potential to supplant the more widely used pump-and-treat groundwater remediation technology by destroying groundwater contamination in situ (in place). ISCO is the process of oxidizing contaminants in the groundwater and soil by injecting water containing high concentrations of an oxidant to the site of the contamination. ...


    By AECOM

  • Diesel and Gasoline Remediation in Groundwater and Soil at a DoD Site

    Site Summary Three above ground storage tanks (containing gasoline and diesel) and associated piping were removed from a DoD site in January 1990. Concentrations of TPHd and TPHg were found in soil samples collected around the former ASTs at concentrations of 140 mg/kg and 9,400 mg/kg, respectively.  Groundwater contamination was also detected with TPHd concentrations reaching 21,000 ug/L ...


    By REGENESIS

  • Research considerations for more effective groundwater monitoring

    Since numerous pathogens occur in feces, water is monitored for fecal contamination using indicator organisms rather than individual pathogens. Although this approach is supported by health effects data in recreational waters, it is questionable when used for drinking water. Most outbreaks in groundwater occur in systems that have not violated the US EPA's maximum contaminant limit (MCL) ...


    By IWA Publishing

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