Enbridge Pipelines Inc. (“Enbridge”) Line 9B Reversal and Line 9 Capacity Expansion Project (“Project”) Application

Line 9B Reversal and Line 9 Capacity Expansion Project Enbridge Revised Response to Durham Citizens Lobby for Environmental Awareness and Responsibility Inc. File OF-Fac-Oil-E101-2012-10 02 Page 1 of 3 Enbridge Pipelines Inc. (“Enbridge”) Line 9B Reversal and Line 9 Capacity Expansion Project (“Project”) Application under section 58 and Part IV (“Application”) of the National Energy Board Act OH-002-2013 File OF-Fac-Oil-E101-2012-10 02 Enbridge Revised Response to Durham Citizens Lobby for Environmental Awareness & Responsibility Inc. (“DurhamCLEAR”) Information Request No. 1 The potential Environmental and socio-economic effects of the proposed project, including the potential effects of malfunctions or accidents that may occur and any cumulative environmental effects that are likely to result from the proposed project 4.b.iiR Request: (b) Durham Region extends for approximately 40 kilometers along the North shore of Lake Ontario. Line 9 runs across the full width of the region and in so doing crosses numerous rivers and streams that flow into the lake. Please provide for each of the following rivers and streams: ii) Time that it would take for oil from a spill to reach Lake Ontario from the time it first reached the water at maximum flow rate. Note that Line 9 crosses 2, 3, or more branches of each of these, all of which have individual flows and individual potential for spreading an oil leak Petticoat creek Duffins Creek Carruthers Creek Lynde Creek Pringle Creek Corbett Creek Oshawa Creek Harmony Creek Farewell Creek Black Creek Tooley Creek Darlington Creek Bowmanville Creek Line 9B Reversal and Line 9 Capacity Expansion Project Enbridge Revised Response to Durham Citizens Lobby for Environmental Awareness and Responsibility Inc. File OF-Fac-Oil-E101-2012-10 02 Page 2 of 3 Soper Creek Bennett Creek Wilmot Creek Graham Creek Response: Travel time for an oil spill to move downstream depends on many factors, including: the volume and type of product released; the location of the release; climatic conditions; and river conditions at the time of the incident. In the unlikely event of a release, Enbridge would immediately implement its emergency response procedures to contain released product and mitigate the impacts. These plans include processes for assessing resources at risk, and determining spill trajectories. Enbridge would utilize incident and site specific information to assess travel times. Line 9B Reversal and Line 9 Capacity Expansion Project Enbridge Revised Response to Durham Citizens Lobby for Environmental Awareness and Responsibility Inc. File OF-Fac-Oil-E101-2012-10 02 Page 3 of 3 4.b.iiiR Request: (b) Durham Region extends for approximately 40 kilometers along the North shore of Lake Ontario. Line 9 runs across the full width of the region and in so doing crosses numerous rivers and streams that flow into the lake. Please provide for each of the following rivers and streams: iii) Aquatic life forms that would be affected if oil of any kind were to enter the water of each of these rivers and streams. Note that Line 9 crosses 2, 3, or more branches of each of these, all of which have individual flows and individual potential for spreading an oil leak Petticoat creek Duffins Creek Carruthers Creek Lynde Creek Pringle Creek Corbett Creek Oshawa Creek Harmony Creek Farewell Creek Black Creek Tooley Creek Darlington Creek Bowmanville Creek Soper Creek Bennett Creek Wilmot Creek Graham Creek Response: Please refer to response to TRCA IR 1.f.iii. .

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