and a tributary of the Mississippi River. Using data from Enbridge's own reports, the Polaris Institute calculated that 804 spills occurred on Enbridge pipelines between 1999 and 2010. These spills released approximately of crude oil into the environment. On July 4, 2002, an Enbridge pipeline ruptured in a marsh near the town of Cohasset, Minnesota, in Itasca County, spilling of crude oil. In an attempt to keep the oil from contaminating the Mississippi River, the Minnesota Department of Natural Resources set a controlled burn that lasted for one day and created a smoke plume about high and long. In 2006, there were 67 reportable spills totaling on Enbridge's energy and transportation and distribution system; in 2007 there were 65 reportable spills totalling . On March 18, 2006, approximately of crude oil were released when a pump failed at Enbridge's Willmar terminal in Saskatchewan. According to Enbridge, roughly half the oil was recovered. On January 1, 2007, an Enbridge pipeline that runs from Superior, Wisconsin to near Whitewater, Wisconsin cracked open and spilled ~ of crude oil onto farmland and into a drainage ditch. The same pipeline was struck by construction crews on February 2, 2007, in Rusk County, Wisconsin, spilling ~ of crude, of which about 87,000 gallons were recovered. Some of the oil filled a hole more than deep and contaminated the local water table. In April 2007, roughly of crude oil spilled into a field downstream of an Enbridge pumping station near Glenavon, Saskatchewan. In January 2009, an Enbridge pipeline leaked about of oil southeast of Fort McMurray at the company's Cheecham Terminal tank farm. Most of the spilled oil was contained within berms but about 1% of the oil, about , sprayed into the air and coated nearby snow and trees. On January 2, 2010, Enbridge's Line 2 ruptured near Neche, North Dakota, releasing about 3,784 barrels of crude oil, of which 2,237 barrels were recovered. In April 2010, an Enbridge pipeline ruptured spilling more than of oil in Virden, Manitoba. This oil leaked into the Boghill Creek, which eventually connects to the Assiniboine River. In the July 2010 Kalamazoo River oil spill, a leaking pipeline spilled more than of oil sands crude oil into Talmadge Creek leading to the Kalamazoo River in southwest Michigan on July 26, near Marshall, Michigan. A United States Environmental Protection Agency update of the Kalamazoo River spill concluded the pipeline rupture