geochemical monitor Articles

  • Geochemical Effects of Perozone®: Important for Bio?

    Perozone® (peroxide-coated ozone) is used as a stand alone ISCO remediation technique at several sites where chlorinated solvents and their breakdown products are present. In both source and plume area low ppb levels appeared to be achievable. However, in some cases a combined ISCO-BIO approach may lead to lower cost. ISCO is then used for source removal and BIO is used for polishing before site ...


    By Verhoeve Milieu & Water

  • Comparison of monitoring programmes of ultimate disposal facilities for radioactive waste and carbon dioxide

    Reliable and cost–effective monitoring is an important part of making geological repositories safe, effective, and acceptable for radioactive waste disposal and carbon dioxide (CO2) storage. The major objectives of monitoring should include the evolution of disposal systems compared to the baseline data of the undisturbed site, as well as the validation of the assumptions and ...


    By Inderscience Publishers

  • High resolution environmental monitoring to support the development of water quality legislation - Case Study

    Aquaread Ltd, an award winning British manufacturer of multi-parameter water quality test equipment, are supplying monitoring equipment and research funding to support the development of improved water quality guidelines across Europe. The research is being conducted in collaboration with scientists at the Aquatic Research Centre at the University of Brighton, and is already influencing ...


    By AQUAREAD Limited

  • Initial stages of pollutants dispersion around municipal waste disposal facilities: a case study in Northern Portugal

    The combined use of several geological, geochemical and geophysical observations during six years enabled the detection of a very faint halo of chemical contamination induced by the operation of a young waste disposal facility in Northern Portugal. The halo does not classify as pollution by any standards, but is observed to be intensifying and thus signals a potential hazardous situation in ...


    By Inderscience Publishers

  • Dynamic factor analysis for estimating ground water arsenic trends

    Received for publication March 14, 2009. Drinking ground water containing high arsenic (As) concentrations has been associated with blackfoot disease and the occurrence of cancer along the southwestern coast of Taiwan. As a result, 28 ground water observation wells were installed to monitor the ground water quality in this area. Dynamic factor analysis (DFA) is used to identify common trends that ...

  • Principal Component Analyses of Groundwater Chemistry Data During Enhanced Bioremediation

    Abstract  A bioremediation project has been monitored for two years at a former sour gas plant site that had ethanolamine, glycol and their degradation products in the subsurface. The active enhanced bioremediation program consisted of dewatering and bioventing. An extensive groundwater monitoring program mapped the distribution of chemical species. Principal component analysis was used to ...


  • In situ treatment of a complex mix of chlorinated solvents: anaerobic reductive dehalogenation after chemical oxidation

    Treatment of chlorinated organic compounds has been ongoing at this New England facility (Site) for over 15 years. The extraction and above ground treatment system for groundwater containing tetrachloroethene (PCE), trichloroethene (TCE), 1,1,1-trichloroethane (1,1,1-TCA) and other chlorinated organic compounds has been running since September 1992. The full-scale remedy of in-situ chemical ...


    By RNAS Remediation Products

  • 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

  • Analysis of Hydrologic Data to Evaluate Phytoremediation System Performance

    Abstract A long-term environmental monitoring program is providing hydrologic data that demonstrates poplar trees are influencing groundwater flow at the J-Field site, Aberdeen Proving Ground, Maryland. Advanced data collection and analyses techniques have enabled researchers to construct a water budget for the study area and to estimate the amount of groundwater the trees are transpiring on a ...


    By Weston Solutions, Inc

  • In-Situ Groundwater Remediation of Heavy Metals at an Active Manufacturing Facility

    Tetra Tech & Adventus deploy In-Situ Groundwater Remediation of Heavy Metals at an Active Manufacturing Facility. Site History: 1966 to the present: Manufacturing of various automotive components 1966 to1984: Operation of chromium plating 1983: Release of metal plating rinse water 1983 to 1989: Excavation of soil and operation of 4 groundwater recovery wells 2006: ...


  • Case Study: Manipulating Groundwater Redox Conditions for MTBE Remediation

    A pilot study was conducted to investigate the potential to foster anaerobic methyl tert butyl ether (MTBE) biodegradation. The pilot test site, located on Long Island, New York, is characterized as a glacial out-wash aquifer with a high groundwater velocity over 2 ft/day. The MTBE plume is typical of similar plumes that have quickly migrated in this glacial out-wash aquifer. It is ...


    By REGENESIS

  • Solutions-IES Completes First Risk-Based Remediation Under New State Law

    A former electronics manufacturing facility in North Carolina (NC) had conducted groundwater remediation since 1991 to remediate low-level chlorinated solvents.  Under RCRA, the originally approved Remedial Action Plan (RAP) recommended pump and treat (P & T with air stripping and carbon) to capture and remove the contaminants.  Upon coming on board the project, Solutions-IES ...


    By Solutions-IES

  • Enhancing in-situ chemical oxidation performance

    In this edition of Peroxygen Talk, guest authors Matt Burns and Bob Pirkle discuss the benefits of compound specific isotope analysis (CSIA) to optimize delivery and monitor performance of ISCO applications. Mr. Burns is a Senior Project Director at WSP Environment & Energy, a leading environmental, energy and sustainability consultancy with over 1,000 people in 65 global locations. He has more ...

  • Data Requirements for Ground Water, Surface Water, and Leachate

    It is common for ground water to be contaminated with the water soluble substances found in overlying soils. Many of the required data elements are similar, e.g., pH, TOC, BOD, COD, oil and grease, contaminant identification and quantification, and soil and aquifer characterization. Additional water quality monitoring data elements include hardness, ammonia, total dissolved solids, and metals ...

  • Natural Attenuation in Soils

    Introduction Surface and subsurface soils have different characteristics in natural attenuation. Mobile contaminants in subsurface soils diffuse into soil vapor and aqueous phase and thus are relatively easily subject to natural subsurface processes that can attenuate these contaminants. Most high-molecular-weight (persistent) organic and many inorganic contaminants will be immobilized in the ...

  • Closures of mine a new challenge for Romania

    AbstractThe mining activity is one of the oldest activity in Romania, dating from the year 100 B.C. The gold and silver ores represented one of the riches of our country. In time the economic content of metals diminuend, and the ore mines become non profitable. Due to this situation the best option of the State was the closure and ecological rehabilitation of the mines.The steps for the ...


  • Environmental data management support for a chemical site

    Client: Ford Consulting Ltd Location: Lancashire, UK Services: Groundwater and Environmental Data Management, Geographical Information Systems Issue: Support for data migration and environmental data management system Summary: ESI provided data migration and environmental data management solutions ...

  • Environmental Data Management Support for a Chemical Site

    Project: Environmental Data Management Support for a Chemical Site Client: Ford Consulting Ltd Location: Lancashire, UK Services: Groundwater and Environmental Data Management, Geographical Information Systems - Support for data migration and environmental data management system Summary: ESI provided data migration ...


    By EarthSoft, Inc

  • Natural Attenuation

    Introduction: Natural subsurface processes such as dilution, volatilization, biodegradation, adsorption, and chemical reactions with subsurface materials are allowed to reduce contaminant concentrations to acceptable levels. Natural attenuation is not a 'technology' per se, and there is significant debate among technical experts about its use at hazardous waste sites. Consideration of this ...

  • Using AquaBupH to adjust aquifer PH: ESTCP-funded project at Charleston Naval weapons station - Case Study

    Elevated levels of trichloroethene (TCE) were found in groundwater at a Department of De-fense (DoD) facility in Charleston, SC. Under an ESTCP-funded in situ technology demonstra-tion project , the Navy had been effectively remediating contamination until a drop in aquifer pH caused dechlorination rates to decline. Solutions-IES responded with a study and applica-tion of buffered substrate to ...


    By EOS Remediation, LLC

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