Dive summary: 

• An oil patch in North Dakota is running out of specialty landfills to deposit the growing amount of chemically-tainted soil and drilling waste being produced.
• According the the Associated Press, oil field special waste has increased nearly 5,100% over the past decade to more than 512,000 tons in 2011.
• There are only five facilities in North Dakota permitted to accept oil field special waste such as tainted rock, soil and other chemically treated solidmaterial. 

From the article: 

 The amount of chemically tainted soil and other drilling waste produced in western North Dakota's thriving oil patch has been growing so quickly that the special landfills where it's disposed are filling up and the state will soon need more of them, state health officials say.

Data obtained by The Associated Press show the amount of so-called oilfield special waste has increased nearly 5,100 percent over the past decade, to more than 512,000 tons last year. ...