A fire occurred at Paulson Oil Company, Chesterton, Indiana at 10:00 PM CST on Wednesday July 14th. Numerous oil storage tanks were in the building were the fire occurred. An estimated 800 gallons of lubricating oil is on the ground as a result of the fire. Staff from the Paulson Oil Company believe that the fire heated the individual tank valves and as a result, Teflon regulators inside the valves melted, causing oil to leak from the tanks onto the ground. The NRC was notified of the incident at 10:45 AM CST on June 15, 2010. U.S. EPA responded to the incident to assess the release.