Determining the effects of a pipeline spill in Canadian boreal lakes: experimental additions of diluted bitumen (dilbit) to in-situ enclosures at the IISD-experimental lakes area

我们将评估与稀释沥青（dilbit）泄漏到水中相关的风险，这是管道的主要环境风险。本研究的目的是产生关于dilbit的命运，运输和毒性的重要信息，为未来管道项目的管理实践和监管措施提供信息。本研究的目的是：（1）量化的行为，命运，和风化的dilbit成分在加拿大北部的天然水柱模拟在一个封闭的系统：（2）进行暴露评估的dilbit成分的基础上的“水柱”和“底基板”暴露设计;（3）确定“水柱”和“底部基质”暴露设计中dilbit成分的生物累积性;（4）基于"剂量-反应“设计评估dilbit毒性;以及（5）提供急需的信息，以帮助制定加拿大稀释沥青运输的管理实践和法规。这项研究将提供重要信息的长期影响dilbit泄漏在水生环境中，并协助规划补救策略，为未来的泄漏。这些信息对当地决策者至关重要，包括加拿大环境和气候变化部、加拿大渔业和海洋部、国家能源委员会和安大略环境部，他们负责管理受管道泄漏影响的土地。

We will assess risks associated with a diluted bitumen (dilbit) spill to water, the major environmental risk from pipelines. The purpose of this research is to generate important information on the fate, transport, and toxicity of dilbit to inform management practices and regulatory measures on future pipeline projects. The objectives of this research are: (1) quantify the behavior, fate, and weathering of dilbit constituents in a natural Canadian Boreal water column as simulated in a contained enclosure system; (2) perform an exposure assessment of dilbit constituents based on a 'water column' and 'bottom substrate' exposure design; (3) determine bioaccumulation of dilbit constituents from a water column', and 'bottom substrate' exposure design; (4) assess dilbit toxicity based on a 'dose-response' design; and (5) provide much-needed information to assist the development of management practices and regulations for the transport of diluted bitumen in Canada. This research will provide important information on the long term impacts of dilbit spills in aquatic environments and assist in planning remediation strategies for future spills. This information is critical for local decision makers, including Environment and Climate Change Canada, Fisheries and Oceans Canada, the National Energy Board, and the Ontario Ministry of the Environment, who are responsible for managing lands affected by pipeline breaches.