The South Platte River that runs through urban Denver has a rough past.
The river once was almost inhabitable because of pollutants, but recent efforts have come a long way in bringing it back to its former glory.
However, we're sad to report that it might be hitting another big bump soon, according to the Denver Post. Crews responded this week to a report from a company called Suncor Energy, which has a refinery near Sand Creek, north of the city.
They reported an oily substance making its way to the tributary of the South Platte. Officials from the Environmental Protection Agency are scrambling to contain the situation, but not as of yet knowing the source of the pollution, or its nature, it's an uphill battle. The area of the report is also less than a mile from a wastewater treatment plant.
Crews suspect the material, black and oily, could be a solvent of some sort. We'll keep our eye on this one and let you know. – Rick Bach
More Mystery: Down South, there's a menacing mullet-killing matter.

