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TitreCo-existence of industrial organic contaminant plumes with municipal water supply wells in fractured rock aquifers
TéléchargerTéléchargement (publication entière)
AuteurParker, B L; Maldaner, C H; Olesiuk, J B
SourceRegional-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
Année2018
ÉditeurRessources naturelles Canada
RéunionRegional-Scale Groundwater Geoscience in Southern Ontario: Open House; Guelph; CA; février 28 - mars 1, 2018
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/306558
Mediaen ligne; numérique
Référence reliéeCette publication est contenue dans Russell, H A J; Ford, D; Priebe, E H; Holysh, S; (2018). Regional-scale groundwater geoscience in southern Ontario: an Ontario Geological Survey, Geological Survey of Canada, and Conservation Ontario geoscientists open house, Commission géologique du Canada, Dossier public 8363
Formatspdf
ProvinceOntario
SNRC40P/08
Lat/Long OENS -80.5000 -80.0000 43.5000 43.2500
Sujetsressources 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; hydrogéologie; géochimie; Phanérozoïque; Paléozoïque; Silurien
Consultation
Endroit
 
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
 
ProgrammeAquifer Assessment & support to mapping, Géoscience des eaux souterraines
Diffusé2018 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.
GEOSCAN ID306558