FigsharePub Date : 2021-06-09DOI: 10.1021/acs.est.1c01761.s001
WynonaH. Klemt (10947010), Robert B. Brua (10947013), Joseph M. Culp (10947016), Keegan Hicks (10947019), Brent B. Wolfe (305770), Roland I. Hall (10947022)
{"title":"EvaluatingnLower Athabasca River Sediment Metal Concentrationsnfrom Alberta Oil Sands Monitoring Programs Using Predevelopment Baselines","authors":"WynonaH. Klemt (10947010), Robert B. Brua (10947013), Joseph M. Culp (10947016), Keegan Hicks (10947019), Brent B. Wolfe (305770), Roland I. Hall (10947022)","doi":"10.1021/acs.est.1c01761.s001","DOIUrl":"https://doi.org/10.1021/acs.est.1c01761.s001","url":null,"abstract":"Since 1997, sedimentnmetal concentrations have been monitored innthe Alberta Oil Sands Region (AOSR) of the Lower Athabasca River bynthe Regional Aquatics Monitoring Program (RAMP; 1997–2002),nthe Joint Oil Sands Monitoring Program (JOSM; 2012–2014), andnthe Oil Sands Monitoring Program (OSM; 2015-present). However, itnhas remained difficult to differentiate industrial sources from naturalnsources and quantify the extent of pollution due to inadequate knowledgenof predevelopment reference conditions. Here, baselines were constructednusing predevelopment (i.e., pre-1967) sediment concentrations of USnEPA priority pollutants (Be, Cr, Cu, Ni, Pb) and V, an element elevatednin bitumen and associated waste materials, normalized to Al concentrationnin cores from floodplain and upland lakes within the AOSR to characterizenthe natural range of variability. The Lower Athabasca River sedimentnmetal monitoring data were examined in the context of the predevelopmentnbaselines. Most metals are below the threshold for minimal enrichmentn(<1.5x baseline) except for chromium (up to 4.8x) in some RAMPnsamples. The predevelopment baselines for sediment metal concentrationsnwill be of particular importance as the oil sands industry potentiallynshifts from a no-release policy to the treatment and release of oilnsands process waters directly to the Lower Athabasca River.","PeriodicalId":521871,"journal":{"name":"Figshare","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://figshare.com/articles/journal_contribution/Evaluating_Lower_Athabasca_River_Sediment_Metal_Concentrations_from_Alberta_Oil_Sands_Monitoring_Programs_Using_Predevelopment_Baselines/14755210","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147887158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}