(NEWSER) – Two things you never want to see together: an inextinguishable underground fire and a nuclear waste dump. But they're only 1,200 feet apart in an area north of St. Louis and may be growing closer, the AP reports.

The underground fire at Bridgeton Landfill has been burning for five years and releasing unpleasant smells into nearby neighborhoods, but the county government's worst-case scenario plan—revealed by KMOX—was written only last year. This "is not an indication of any imminent danger," says County Executive Steve Stenger. And the landfill's operator, Republic Services, says safeguards (like structures that grab gasses from below the surface) exist to separate the waste from the blaze. The landfill "is safe and intensively monitored," says a spokesman.

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