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  1. Source-identification investigations of petroleum contaminated groundwater in the Missouri Ozarks.

    Article, Communication - En anglais

    Sinkholes and the Engineering and Environmental Impacts of Karst. Springfield, MO, USA, 1997.

    The growing population in the Missouri Ozarks rely on the abundant supply of potable groundwater found in the fractured bedrock underlying the region.

    Protection of this valuable resource from surface, or near-surface contamination is essential to the health and safety of the citizens of Missouri.

    Petroleum products stored in underground storage tanks pose a threat to groundwater if a release occurs. « Pools » of free product of petroleum can become trapped in voids commonly found on the karst bedrock of the Ozarks.

    These pools become underground sources of contamination by slowly dissolving into the groundwater.

    Although the free product rarely travels far from the surface source, dissolved-phase contamination can migrate thousands of meters through underground conduits.

    Dissolved phase petroleum degasses and partitions out of the groundwater in these conduits.

    Consequently, contaminated groundwater is not commonly found more than a kilometer or two (few thousand feet) from the source.

    The Missouri Department of Natural Resources, Division of Geology and Land Survey's Leaking Underground Storage Tank Unit (DGLS/LUST) investigates sites where petroleum-contaminated groundwater has been found in springs or private wells but a source of the contamination is unknown.

    These investigations start at the regional scale by detormining the recharge area of the contaminated groundwater and by identifying the potentially responsible parties (PRPs). (...)

    Mots-clés Pascal : Nappe phréatique, Missouri, Etats Unis, Amérique du Nord, Amérique, Contamination chimique, Pétrole, Approvisionnement eau, Analyse mécanisme, Structure géologique, Etude sur terrain, Méthode analyse, Hydrogéologie, Marqueur fluorescent, Méthodologie, Observation géophysique, Détecteur photoionisation

    Mots-clés Pascal anglais : Ground water table, Missouri, United States, North America, America, Chemical contamination, Petroleum, Water supply, Mechanism analysis, Geological structure, Field study, Analysis method, Hydrogeology, Fluorescent tracer, Methodology, Geophysical observation, Photoionization detector

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 99-0242567

    Code Inist : 001D14J01. Création : 16/11/1999.