A ruptured oil pipeline has dumped more than 10,000 gallons of crude into a wetland area and nature preserve in southwestern Ohio. How’s that for a reminder that pipelines aren’t necessarily cleaner than oil trains?

The 1950s-era pipeline, owned by Sunoco Logistics, was sending oil from Texas up to refineries in Michigan. The spill was discovered Monday, but some neighbors reported smelling oil since late February.

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Ohio officials are now testing air quality and drinking water, and cleanup workers are using heavy equipment to try to mop up the mess. The oil has pooled in a marsh not far from the Great Miami River. The Oak Glen Nature Preserve — home to deer, birds, woods, and wildflowers — has been temporarily closed.

oil spill

EPA via WLWTOil spill in Oak Glen Nature Preserve, Ohio.

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“We do have a large area impacted. The good news is it’s contained. The bad news it’s a mile of creek impacted. It is going to be a big cleanup,” U.S. EPA official Steve Renninger told WKRC Cincinnati.

Oil spill.

EPA via WLWTAnd another view of the oily mess.