Dakota Access pipeline construction expected to get go-ahead

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  • FILE - This Sept. 29, 2016, file photo, shows a section of the Dakota Access Pipeline under construction near the town of St. Anthony in Morton County, N.D. The Army has notified Congress Tuesday, Feb. 7, 2017, that it will allow the $3.8 billion Dakota Access pipeline to cross under a Missouri River reservoir in North Dakota, completing the four-state project to move North Dakota oil to Illinois. The Army intends to allow the crossing under Lake Oahe as early as Wednesday, Feb. 8. The crossing is the final big chunk of work on the pipeline.  (Tom Stromme/The Bismarck Tribune via AP, File)

    FILE - This Sept. 29, 2016, file photo, shows a section of the Dakota Access Pipeline under construction near the town of St. Anthony in Morton County, N.D. The Army has notified Congress Tuesday, Feb. 7, 2017, that it will allow the $3.8 billion ... Dakota Access pipeline to cross under a Missouri River reservoir in North Dakota, completing the four-state project to move North Dakota oil to Illinois. The Army intends to allow the crossing under Lake Oahe as early as Wednesday, Feb. 8. The crossing is the final big chunk of work on the pipeline. (Tom Stromme/The Bismarck Tribune via AP, File) (The Associated Press)

  • Trash is seen piled in a dumpster at an encampment set up near Cannon Ball, N.D., Wednesday, Feb. 8, 2017, for opponents against the construction of the Dakota Access pipeline. Opponents have called for protests around the world Wednesday, Feb. 8, 2017, as the Army prepared to green-light the final stage of the $3.8 billion project's construction. The Army said Tuesday, Feb. 7, that it will allow the four-state pipeline to cross under a Missouri River reservoir in North Dakota, the last big chunk of construction. (AP Photo/James MacPherson)

    Trash is seen piled in a dumpster at an encampment set up near Cannon Ball, N.D., Wednesday, Feb. 8, 2017, for opponents against the construction of the Dakota Access pipeline. Opponents have called for protests around the world Wednesday, Feb. 8, ... 2017, as the Army prepared to green-light the final stage of the $3.8 billion project's construction. The Army said Tuesday, Feb. 7, that it will allow the four-state pipeline to cross under a Missouri River reservoir in North Dakota, the last big chunk of construction. (AP Photo/James MacPherson) (The Associated Press)

  • A sign is seen at an encampment set up near Cannon Ball, N.D., Wednesday, Feb. 8, 2017, for opponents against the construction of the Dakota Access pipeline. Opponents have called for protests around the world Wednesday, Feb. 8, 2017, as the Army prepared to green-light the final stage of the $3.8 billion project's construction. The Army said Tuesday, Feb. 7, that it will allow the four-state pipeline to cross under a Missouri River reservoir in North Dakota, the last big chunk of construction. (AP Photo/James MacPherson)

    A sign is seen at an encampment set up near Cannon Ball, N.D., Wednesday, Feb. 8, 2017, for opponents against the construction of the Dakota Access pipeline. Opponents have called for protests around the world Wednesday, Feb. 8, 2017, as the Army ... prepared to green-light the final stage of the $3.8 billion project's construction. The Army said Tuesday, Feb. 7, that it will allow the four-state pipeline to cross under a Missouri River reservoir in North Dakota, the last big chunk of construction. (AP Photo/James MacPherson) (The Associated Press)

The developer of the stalled, $3.8 billion Dakota Access pipeline could get clearance from the Army as early as Wednesday to finish the project.

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The Army says it will cancel further study and allow the four-state pipeline to cross under a Missouri River reservoir in North Dakota, the last big chunk of construction for the project to move North Dakota oil to Illinois.

The Standing Rock Sioux gets its drinking water from Lake Oahe and fears a pipeline leak would cause contamination. It has vowed to fight the Army permission in court.

It's unclear when pipeline developer Energy Transfer Partners would begin drilling after getting permission.

CEO Kelcy Warren has said the company should be able to finish the work in a little over three months once it has the go-ahead.