Wreckage from a derailed oil train smoldered in West Virginia on Tuesday as environmentalists waited to see whether surrounding water and wildlife would be tainted by the train’s cargo of North Dakota crude.

For some in the area, the latest incident also brought on memories of when a coal-cleaning chemical spilled into a nearby river a year ago and shut off drinking water to nearly 300,000 people for several weeks, said Judith Rodd, director of Friends of the Blackwater, an environmental group based in Charleston, West Virginia.