On Sunday March 23, 2008 at approximately 5:00 am CDT, workers at the Koch Pipeline facility in Clearbrook, Minnesota noticed a pipeline rupture. Reportedly, a 6 inch pipe containing crude oil had cracked near a weld at the tank due to repeated thawing and freezing. The pipe came from the tank and went into the ground An estimated 1,700 barrels of crude oil were released into the bermed area surrounding the 150,000 drum storage tank. The facility contracted with Oil Service Inc. (OSI) to vacuum / recover the crude oil from the bermed area. The EPA START contractor was mobilized to the site on the afternoon of March 23, 2008.