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TitleScience-based dredge disposal guidelines for port expansion / Directives fondées sur la science afin de disposer des dragages lors d'expansion portuaire
DownloadDownload (whole publication)
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorLintern, GORCID logo
SourcePublic presentations of May 21st, 2019: Environmental Geoscience Program, current status of research projects (phase 2014-2019); by Jacob, N; Parsons, MORCID logo; Rivard, CORCID logo; Savard, M MORCID logo; Larmagnat, S; Outridge, P MORCID logo; White, DORCID logo; Kao, HORCID logo; Lintern, GORCID logo; Geological Survey of Canada, Scientific Presentation 104, 2019 p. 94-107, Open Access logo Open Access
PublisherNatural Resources Canada
Lang.English; French
Mediaon-line; digital
RelatedThis publication is contained in Public presentations of May 21st, 2019: Environmental Geoscience Program, current status of research projects (phase 2014-2019)
RelatedThis publication is related to Developing national guidelines for dredge disposal at sea
File formatpdf (Adobe® Reader®)
ProvinceBritish Columbia; Western offshore region
NTS92B/13; 92B/14; 92B/15; 92F/07; 92F/08; 92F/09; 92F/10; 92F/11; 92F/14; 92F/15; 92F/16; 92G/02; 92G/03; 92G/04; 92G/05; 92G/06; 92G/11; 92G/12; 92K/02; 92K/03; 103J
AreaStrait of Georgia; Vancouver; Vancouver Island; Prince Rupert
Lat/Long WENS-125.5000 -122.5000 50.2500 48.7500
Lat/Long WENS-132.0000 -130.0000 55.0000 54.0000
Subjectsenvironmental geology; marine geology; surficial geology/geomorphology; geophysics; geochemistry; Nature and Environment; Science and Technology; Government and Politics; Economics and Industry; Transport; environmental studies; environmental impacts; dredging; waste disposal; waste disposal sites; marine environments; coastal environment; marine sediments; sediment dispersal; modelling; geophysical surveys; bathymetry; marine sediment cores; isotopic studies; radioisotopes; radium; hydrodynamics; oceanography; currents; bottom currents; Environmental Geoscience Program (EGP); Regional Ocean Disposal Advisory Committee; Canadian Environmental Protection Act 1999; Environmental impact assessment; Infrastructures; Regulation; Methodology
Illustrationslocation maps; geoscientific sketch maps; plots; time series; photographs
ProgramEnvironmental Geoscience Program Management
Released2019 10 10
AbstractCoastal energy infrastructure and other port projects require dredging to make the sites suitable for construction. On the west coast of Canada, dredging has been required at many recently proposed port sites. Environment and Climate Change Canada (ECCC) licences disposal of material at several large disposal-at-sea (DoS) sites on the coast. Proponents may also propose a new or temporary DoSsite nearer to their development to save enormous shipping time and costs. Depending on the level of contamination of the sediment to be disposed, and the methods used, the regulation may require sediment to be disposed at either a dispersive or non-dispersive site. In the past several years, "guidelines for determining dispersivity" have been proposed by NRCan(Lintern)/EC scientists and stipulated to two proponents. The validity of the methodology is being tested. NRCanis part of a triparty Regional Ocean Disposal Advisory Committee that will investigate several aspects of dredge disposal on the coast, one of which is dispersivityof existing sites. NRCanis tasked with determining dispersivityat existing sites and with conducting sensitivity analysis of the variables used in the existing guidelines. This requires oceanographic mooring instrumentation, data analysis and modeling.
Summary(Plain Language Summary, not published)
This scientific document is a wrap up of the research done in the Environmental Geoscience Program from 2014 to 2019. This document explain the science behind the program over the past 5 years covering a range of state of the art science in critical metal deposits, geoscience tools, shale gas and groundwater, oil sands, fluid in carbonates, mercury, geological storage of carbon, induced seismicity and dredge disposal. All the sciences done under this program contribute to provincial regulations as well as environmental assessments to ensure the safety and security of Canadians and to their environment.

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