MINNEAPOLIS (AP) The Minnesota Court of Appeals has reversed regulators’ decision to grant a certificate of need for the proposed Sandpiper oil pipeline, saying that state regulators must complete an environmental impact statement before the certificate can be issued.

The appeals court sent the issue back to the Minnesota Public Utilities Commission to conduct an environmental review and reconsider whether a certificate should be granted.

Minnesota regulators granted the certificate in June, saying the $2.6 billion, 610-mi. (981 km) pipeline from North Dakota’s Bakken oil fields to Superior, Wisc., was necessary and in the public interest. A lengthy environmental review of Enbridge Energy’s project was set to take place as officials determined the pipeline’s final route.

But a three-judge panel of the appeals court said Sept. 14 that the certificate constituted a major governmental action, so state law requires the environmental impact statement be completed before that certificate is granted.

No one disputed that the pipeline would be subject to environmental review, but the timing of a review was at issue.

Traditionally, the certificate of need and routing permit proceedings for pipelines are conducted at the same time, but in this case, the commission conducted certificate of need proceedings first.

The Friends of the Headwaters argued that conducting certificate of need proceedings before completing an environmental impact statement violated the Minnesota Environmental Policy Act. The appeals court agreed.

The court also said that conducting an environmental impact statement early in the process ensures “decision-makers are fully informed regarding the environmental consequences of the pipeline, before determining whether there is a need for it. Moreover, completion of an EIS at the initial certificate of need stage seems particularly critical here because once a need is determined, the focus will inevitably turn to where the pipeline should go, as opposed to whether it should be built at all.’’

Members of the Laborers International Union of America said they were disappointed that the ruling would further delay Minnesota regulators’ approval of Sandpiper and urged the Public Utilities Commission to act quickly.

“We are deeply disappointed by the delays this decision will cause, which were completely unnecessary,’’ the union’s international representative, Dan Olson, said in a statement. He urged the commission to quickly get the process back on track.

Calgary, Alberta-based Enbridge has argued that Sandpiper is needed to move the growing supply of North Dakota crude oil safely and efficiently to market. The company has said the project also would ease rail congestion and create approximately 1,500 construction jobs.

But environmentalists and tribal groups said the risk of leaks is too high, including where the route would run through the headwaters of the Mississippi River.

North Dakota regulators have already approved Sandpiper.

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