A sheen of oil can be seen in the water on property owned by Jim Swanson in Laurel, Mont. The leak started from a 12-inch crude pipeline, and Exxon estimated that the total amount of oil released from Saturday to Tuesday was between 750 barrels and 1,000 barrels . The Yellowstone River spill amount paled in comparison to the estimated 35,000 barrels to 60,000 barrels that polluted the Gulf of Mexico in 2010. Exxon set up a hotline for individuals who feel they've been impacted by the problem. The company reported that some 94 calls were placed through Monday night.