geological sampling Articles

  • 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 ...

  • Evaluation of aluminum speciation in surface waters in China and its environmental risk assessment

    As the ongoing global research on acid precipitation is developing in depth, more and more attention has been paid to the ecological effects of aluminum (Al) due to its toxicity to plants and animals, which is caused by acid precipitation. As a very serious problem of terrestrial and aquatic environmental acidification occurs in China, especially in southwestern China, a systematic investigation ...


    By Springer

  • Water treatment membrane coating promises chemical-free virus removal

    A novel material coating for water treatment membranes promises to improve the removal of water-borne viruses during treatment. This hydrogel coating, known as a zwitterionic polymer hydrogel, was created by scientists from Ben-Gurion University of the Negev and the University of Illinois at Urbana-Champaign. The virus-fighting membrane was created by grafting the new hydrogel coating onto ...


    By Fluence Corporation

  • Characterization Of A Deep Radiological Contamination: Integration Of Geostatistical Processing And Historical Data

    Summary Emerging in the early 80’s, decommissioning is more than ever a major issue since hundreds of sites and facilities worldwide will end their operations over the next decades. Decontamination and remediation projects are all the more sensitive since they could last several years and turn out to be highly costly if not well-prepared. The key lies in an adequate contamination ...


    By Geovariances

  • A dynamic model using monitoring data and watershed characteristics to project fish tissue mercury concentrations in stream systems

    A complex interplay of factors determines the degree of bioaccumulation of Hg in fish in any particular basin. Although certain watershed characteristics have been associated with higher or lower bioaccumulation rates, the relationships between these characteristics are poorly understood. To add to this understanding, a dynamic model was built to examine these relationships in stream systems. The ...


    By John Wiley & Sons, Ltd.

  • Microscopic Particulate Analysis

    Introduction In 1989 the EPA promulgated the Surface Water Treatment Rule (SWTR) in response to the 1986 Amendments to the Safe Drinking Water Act (SDWA). The overall goal of the SWTR is to protect consumers from pathogens. The SWTR recommends a multiple-barrier approach including source water protection, filtration and disinfection when surface water is used as source water for drinking. ...


    By Analytical Services, Inc

  • Cryogenic Treatment Unit (TU-51) Technology for Recovery of VOCs from Highly Contaminated Environment

    A Cryogenic Treatment Unit or TU-51 Technology was developed to apply a cryogenic air treatment process to recover persistent vapor phase volatile organic compounds (VPVOCs) having extremely low boiling points.  These would include explosive compounds present in the vapor ...


    By IWA Publishing

  • Cryogenic Treatment Unit (TU-51) for Recovery of VOCs for Soil Remediation

    A Cryogenic Treatment Unit or TU-51 was developed to apply a cryogenic air treatment process to recover persistent vapor phase volatile organic compounds (VPVOC) having extremely low boiling points. These would include explosive compounds present in the vapor stream. The portable TU-51VPVOC (OEM) operates the following process: vapors are recovered from geologic units via SVE, often from a ...


    By IWA Publishing

  • Out of the water, out of harms way

    Across the nation scientists are detecting low concentrations of pharmaceuticals in lakes, streams, drinking water sources and in soils irrigated with reclaimed water, according to the United State Geological Service and the US Environmental Protection Agency (EPA).Over 80% of waterways tested in the US show traces of common medications such as acetaminophen, hormones, blood pressure medicine, ...

  • Counting solutions LSC technical tips from PerkinElmer

    The advance of the nuclear industry in all its forms coupled with growing concerns for possible environmental contamination has led to an increased interest in the quantification of radioisotopes in the environment. Radionuclides currently present in the environment originate from a variety of sources such as fallout from nuclear weapons testing, and in discharges from both nuclear and ...


    By PerkinElmer, Inc.

  • ESdat environmental database software helps organizations manage their environmental data for ISO 14001

    Environmental data management software is an efficient way to handle large amounts of data generated with the adoption of environmental standards like ISO 14001.  A recent survey by EScIS shows that 100% of environmental professionals saved time using their ESdat environmental database software and that having the data organized was seen as a major feature. ESdat environmental database ...

  • A forensic study at an abandoned service station along the New Jersey shore: How the mixed leads can help

    In the late 1990s, a real estate developer purchased an abandoned service station at a sheriff’s sale. The site was located on the barrier island near Atlantic City, New Jersey. The service station had been owned previously by an independent operator. That owner purchased the property from a major oil company in 1983. Our client, the real estate developer, never operated the service ...


    By Triassic Technology, Inc.

  • Sinking Costs

    Today there is more pressure than ever for businesses to minimize costs and increase productivity. Companies are always looking for ways to reduce overall costs. Unfortunately, these efforts are often hampered when a company is faced with an environmental investigation. Regulatory agency requirements, such as determining the full horizontal and vertical extent of contamination in soil and/or ...


  • Workers` silica exposure at Fracking sites far exceeds OSHA Limit, NIOSH study finds

    The concentration of silica in the air workers breathe exceeded occupational health criteria at all 11 hydraulic fracturing sites tested by the National Institute for Occupational Safety and Health, the American Industrial Hygiene Association announced July 31. Researchers measured the silica levels of more than 100 personal breathing zone samples at fracking sites in five states, finding levels ...


    By Bloomberg BNA

  • Drill King International is exploring reverse-circulation drilling opportunities in Chile

    The new XT RC50 hammer from Drill King International completed drilling trials at the beginning of August 2016. This 5in (127mm) reverse-circulation (RC) hammer is the first one from the XT (Extreme Torque) series, introduced by the down-the-hole (DTH) drilling equipment manufacturer from Texas, US. The XT RC hammer series will complement Drill King's extensive line of DTH air- and water-powered ...

  • Environmental Data Management for Groundwater Contamination

    ESdat environmental data management software has been used to manage and report on large datasets generated from an investigation of groundwater contamination on an industrial facility in Adelaide. ESdat was used in managing site data and the maintenance of conceptual model and time series outputs at a complex site over an extended period. Leakages of TCE and the subsequent ...

  • Analysis of Trace Elements and Ions in Ambient Fine Particulate Matter at Three Elementary Schools in Ohio

    ABSTRACT The results from a chemical characterization study of fine particulate matter (PM2.5) measured at three elementary schools in Central and Southeast Ohio is presented here. ...

  • Widespread Plastic Pollution Found in Great Lakes Tributaries

    Tiny pieces of harmful plastic, called microplastics, are prevalent in many rivers that flow into the Great Lakes, according to a study published today in the journal Environmental Science & Technology. Results are also illustrated on a new USGS microplastics website. Microplastics ...

  • EQuIS as the Key to Unlocking the Potential of Data - Case Study

    Polycyclic Aromatic Hydrocarbon (PAH) History Reilly Tar and Chemical 80 acre property, operated 1917-1972 Coal tar and distilled by-products discharged to ditch and peat bog through 1939 Onsite industrial well with leaky casing PAH History Reilly Tar and Chemical 1934 the city’s first water supply well ...


    By EarthSoft, Inc

  • 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.

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