It’s official. The scaffolding is going up on Williamsburg’s old cabbage processing plant, aka The Giant Fart Cloud Building, and the demolition crews are on their way. The real fun, however, will begin when excavation starts. The Fart Cloud site–formally known as 5 Roebling–is across Roebling Street from the Roebling Oil Field and potentially within reach of the underground oil plume on the block. There have been test wells near the building, but the results aren’t known.