"Chicago Moves To Enclose Piles of Petroleum Coke"

"If companies want to continue storing giant mounds of petroleum coke on Chicago's Southeast Side, they soon will have to start doing so indoors."

"Responding to months of public outrage about black dust clouds swirling off uncovered piles along the Calumet River, Mayor Rahm Emanuel plans to unveil new regulations Thursday requiring large storage terminals in the city to fully enclose petroleum coke, coal and other bulk materials.

The facilities also will be required to operate dust suppression equipment constantly, maintain air pollution monitors around the perimeter of the sites and take more aggressive steps to prevent runoff from washing into the river, according to a draft provided by the mayor's office."
 
Michael Hawthorne reports for the Chicago Tribune December 19, 2013.

Source: Chicago Tribune, 12/20/2013