The facility, which is called a "gas governor" and consists of a large slab of concrete, a flue pipe and a control box, is intended to regulate gas supply in the area.

BBC: The gas governor in Oxted

They know that steel pipe cased in concrete, when engineered correctly, is not going to leak chemicals into their water.

FORBES: Energy's Latest Battleground: Fracking For Uranium

In many cases, that means replacing a round pipe with a wide concrete box-like structure.

WSJ: Towns, ecologists seek climate-friendly culverts