Oil storage tanks are seen at sunrise with the Rocky Mountains and the Denver downtown skyline in the background October 14, 2014. Commercial crude stocks across the United States rose by 105 million barrels early this year to peak at 490 million barrels, the highest level in eight decades. Despite some draw downs in recent weeks, which have reduced inventories to 460 million barrels, stocks are still 92 million barrels higher than this time last year. And stocks could rise again at the end of the third quarter when U.S. refineries enter the traditional autumn turn around season. Yet the cost of storing crude has remained relatively modest throughout thanks to a big increase in tank farm and pipeline capacity added in recent years. Working storage capacity at refineries, tank farms and underground storage facilities in the United States has increased by 85 million barrels, almost 19 percent, since […]