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This article in JEQ

  1. Vol. 37 No. 4, p. 1468-1476
     
    Received: Nov 14, 2007


    * Corresponding author(s): Richard_Martel@ete.inrs.ca
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doi:10.2134/jeq2007.0605

Hydrogeological Study of an Anti-Tank Range

  1. Michel Maillouxac,
  2. Richard Martel *a,
  3. Uta Gabriela,
  4. René Lefebvrea,
  5. Sonia Thiboutotb and
  6. Guy Amplemanb
  1. a INRS-Eau, Terre et Environnement, Univ. of Québec, 490 rue de la couronne, Québec, QC, G1K 9A9, Canada
    c Golder Associates, 9200, de l'Acadie, Montréal, Québec, H4N 2T2, Canada
    b Defense Research and Development Canada– Valcartier, 2459 Pie XI Blvd North, Val-Bélair, Québec, G3J 1X5, Canada

Abstract

The Arnhem Anti-Tank Range (Canadian Forces Base [CFB] Valcartier, Canada, in operation since the 1970s) has been characterized, including the drilling, installation, and characterization of 25 wells and a ground-penetrating radar survey. The observed particular features of this site include highly variable flow velocities (from < 3 to 1200 m/yr) and transient flow regime in the regional aquifer below the contaminant source zone of the impact area, sharp flow direction shifts, discontinuous stratigraphy and a local perched aquifer. A transient ground water flow model permitted us to understand how the complex hydrogeological setting shapes contaminant transport in the regional aquifer. The model explains the highly variable energetic material (EM) concentrations measured in the plume with peaks associated to spring and to a lesser extent to fall recharge events. As a conclusion from this work, the authors suggest that the characterization of contaminant sources on slopes should extend over all seasons to be sure to detect potential transient flow conditions and variable contaminant concentrations.

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Copyright © 2008. American Society of Agronomy, Crop Science Society of America, Soil Science SocietyAmerican Society of Agronomy, Crop Science Society of America, and Soil Science Society of America