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Enbridge Line 5 is a major oil pipeline in the Enbridge Lakehead System, which conveys petroleum from western Canada to eastern Canada via the Great Lakes states. Line 5 is particularly notable for passing under the environmentally sensitive Straits of Mackinac, which connect Lake Michigan to Lake Huron. As of December 2013, it is capable of carrying of oil per day. It carries synthetic crude, natural gas liquids, sweet crude, and light sour crude. ==Route== The pipeline runs between two major nodes of the Enbridge Pipeline System at Superior, Wisconsin, and Sarnia, Ontario. The Enbridge terminal at Superior conveys western Canadian crude oil from various incoming pipelines (including lines 1–4) to Line 5 and Line 6, which go around the northern and southern shores of Lake Michigan respectively. From Superior, Line 5 travels east to the Upper Peninsula of Michigan, then runs southeast to Rapid River, near Escanaba.〔 At Rapid River, natural gas liquids (NGL) are side stream delivered for stripping, and the stripped NGLs are reinjected.〔 From Rapid River, the pipeline runs near the northern shore of Lake Michigan until it reaches the Straits of Mackinac. There the pipeline divides into two separate lines, which reunite when they reach the southern side of the straits. The lines are buried until they reach a depth of .〔(【引用サイトリンク】title= Line 5 Underwater Images )〕 The lines descend to a depth of approximately under the straits.〔 Once on land again in the Lower Peninsula, Line 5 runs near Interstate 75 to Bay City. At the Lewiston pumping station, US sweet crude may be injected.〔 From Lewiston, Line 5 loops around Saginaw Bay, then runs southeast to the St. Clair River. Just before the St. Clair, Line 5 reaches the Marysville pumping station. Volumes destined for Michigan and Ohio refineries such as BP Husky and Marathon Detroit are offloaded there,〔 and transferred to a Sunoco pipeline that runs from Marysville to Toledo.〔(【引用サイトリンク】publisher= Sunoco )〕 The line then proceeds west across the St. Clair to Ontario, where it rejoins Enbridge Line 6 and terminates at Sarnia.〔 Any volumes not destined for Sarnia-area refineries are there pumped into tanks for transfer to Enbridge Line 7.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Enbridge Line 5」の詳細全文を読む スポンサード リンク
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