ST. PAUL, Minn. (AP) — Enbridge Energy is asking state regulators to replace a section of its oil pipeline that crosses the Fond du Lac Band of Lake Superior Chippewa reservation in northeastern Minnesota.
Enbridge has filed an application with the Public Utilities Commission to replace a 10-mile, above-ground section of its Line 4 pipeline with a new section that would run under ground.
Enbridge says the replacement would cost $100 million.
The Fond du Lac Band supports the replacement, saying the above-ground section disrupts the natural water flow across the reservation and is a physical barrier to resources.
Minnesota Public Radio News says Line 4 was built in the 1970s and some sections were constructed above ground because of heavily saturated soil. Over the years some of that soil has eroded.
The proposed project comes as Enbridge is also seeking to replace its Line 3 pipeline across northern Minnesota, which has drawn heavy opposition from tribes and environmental groups.