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Dans le lac Ontario, les années d'échantillonnage MECP les plus récentes sont 2006, 2009, 2012; dans le lac Érié, 2007, 2010, 2014 et 2016; et dans le lac Supérieur, ceux-ci sont de 2016 et 2019 (ECCC) et 2011 (MECP).Les données proviennent du réseau de stations indicielles côtières des Grands Lacs du ministère de l'Environnement, de la Conservation et des Parcs de l'Ontario et des données de surveillance et de surveillance de la qualité de l'eau des Grands Lacs d'ECCC.Faible stress : 0 dépassement ; Stress modéré : 1 - 2 dépassements ; Stress élevé : >2 dépassements", "geometryType": "esriGeometryPoint", "sourceSpatialReference": { "wkid": 3978, "latestWkid": 3978 }, "copyrightText": "Environnement et Changement climatique Canada (ECCC) \nECCC Great Lakes Water Quality Monitoring and Surveillance Data and MECP Great Lakes Nearshore Index Station Network - Water Chemistry", "parentLayer": { "id": 4, "name": "CONTAMINANTS DANS L'EAU ET LES SÉDIMENTS" }, "subLayers": [], "minScale": 0, 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