ITASCA TOWNSHIP, Minn. -- The boggy ground jiggled underfoot as Paul Stolen walked along La Salle Creek, a tiny wetland stream whose banks are staked with orange plastic posts that say, "Warning, Petroleum Pipeline."
"There's water flowing beneath the ground," said the retired Minnesota Department of Natural Resources biologist.
And crude oil too.
This remote wetland near Itasca State Park, already undercut by three crude oil pipelines, is one of several fragile, isolated habitats along the proposed path of the 610-mile Sandpiper crude oil pipeline across northern Minnesota.
The $2.6 billion project would help fix a problem in North Dakota's booming oil fields. The bounty of almost a million barrels of crude per day far surpasses the capacity of pipelines to refineries in the Midwest and beyond.
The Sandpiper pipeline would be one of the largest across Minnesota, delivering an additional 375,000 barrels daily to Superior, Wis.
But the ecological risk of adding another major pipeline in places like La Salle Creek is raising alarm among state environmental officials. For the first time, the Minnesota Pollution Control Agency (MPCA) is questioning whether more pipelines should be built through the state's lakes region.
In a new analysis of the proposed Sandpiper route, the agency said the line would cross 28 rivers, lakes and wetlands that can't be reached from nearby roads. At La Salle Creek, for example, it would be "extremely difficult if not impossible" to bring in cleanup equipment if an oil spill occurs, the agency said.