FILE - In this Sept. 29, 2016, file photo, shows a section of the Dakota Access pipeline under construction near St. Anthony in Morton County, N.D. North Dakota regulators are investigating whether the developer of the pipeline removed too many trees while laying pipe in the state. A report from a third-party inspector identified more than 80 sites where trees might have been improperly cleared. Energy Transfer Partners denies violating terms of its permit. And its plan for replacing trees calls for crews to plant more than two trees for every one that was removed. (Tom Stromme/The Bismarck Tribune via AP, File)/The Bismarck Tribune via AP)
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