| Titre | Co-existence of industrial organic contaminant plumes with municipal water supply wells in fractured rock aquifers |
| Télécharger | Téléchargement (publication entière) |
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| Licence | Veuillez noter que la Licence du gouvernement
ouvert - Canada remplace toutes les licences antérieures. |
| Auteur | Parker, B L; Maldaner, C H; Olesiuk, J B |
| Source | Regional-scale groundwater geoscience in southern Ontario: an Ontario Geological Survey, Geological Survey of Canada, and Conservation Ontario geoscientists open house; par Russell, H A J ; Ford, D; Priebe, E H; Holysh, S; Commission géologique du
Canada, Dossier public 8363, 2018 p. 30, https://doi.org/10.4095/306558  Accès ouvert |
| Année | 2018 |
| Éditeur | Ressources naturelles Canada |
| Réunion | Regional-Scale Groundwater Geoscience in Southern Ontario: Open House; Guelph; CA; février 28 - mars 1, 2018 |
| Document | dossier public |
| Lang. | anglais |
| DOI | https://doi.org/10.4095/306558 |
| Media | en ligne; numérique |
| Référence reliée | Cette publication est contenue dans Regional-scale groundwater geoscience in southern Ontario: an Ontario Geological Survey, Geological Survey of Canada, and Conservation Ontario geoscientists open house |
| Formats | pdf |
| Province | Ontario |
| SNRC | 40P/08 |
| Région | Cambridge |
| Lat/Long OENS | -80.5000 -80.0000 43.5000 43.2500 |
| Sujets | ressources en eau souterraine; eau souterraine; aquifères; géochimie des eaux souterraines; substances polluantes; géologie du substratum rocheux; caractéristiques structurales; fractures; lithologie;
roches sédimentaires; dolomies; qualité de l'eau; pollution de l'eau souterraine; puits d'eau; établissement de modèles; Pesticide; Approvisionnement en eau; surveillance; Approvisionnement en eau; hydrogéologie; géochimie; Phanérozoïque;
Paléozoïque; Silurien |
| Programme | Géoscience des eaux souterraines , Aquifer Assessment & support to mapping |
| Diffusé | 2018 02 16 |
| Résumé | (disponible en anglais seulement)
Long-term studies combining research and conventional methods are being conducted at DNAPL sites where the organic contaminant plumes co-exist in the same
fractured sedimentary rock aquifer with municipal water supply wells. Two of the research sites overlay the horizontally layered, Silurian dolostone aquifer. The Cambridge site has a metolachlor pesticide plume detected nearly 1 km down-gradient at a
municipal supply well 20 years after spills occurred. The Guelph site plume is TCE. The plumes were characterized in detail using high-resolution methods for identifying hydraulically active fractures and variable matrix conditions. The 3-D plume
concentration characteristics have been monitored for more than a decade using depth-discrete multilevel systems. The plumes have evolved to nearly stationary position (steady-state) after three decades due to the combined effects of diffusion and
sorption in the matrix with dispersion in a dense network of well-connected fractures. Degradation occurs in each of the plumes but is a secondary factor in terms of current plume extents. These research studies show that high resolution monitoring
can be used to inform site conceptual models and decision-making by municipalities and regulatory agencies to allow these plumes to coexist within or proximal to municipal or private well fields without imposing excessive or arbitrary demands for
subsurface source removal (i.e. remediation) or well abandonment. |
| Sommaire | (Résumé en langage clair et simple, non publié)
Compte rendu d'un atelier à Guelph, en Ontario, dans le cadre du programme Échange de ST. Des résumés ont été fournis par la Commission
géologique de l'Ontario, le ministère de l'Environnement et du Changement climatique, les Conservatin Authorities, les universités, le secteur privé, et Unites States Geological Survey. |
| GEOSCAN ID | 306558 |
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