Could be nothing, or it could be something, but a soil sampler was spotted last week at Amtrak’s 14th Street rail yard in the South Loop, a potential site for a new baseball park for the Chicago White Sox. Of course, it is definitely something, because whether or not it becomes a White Sox destination, there are still redevelopment possibilities here, and everyone will want to know what’s going on beneath the surface, and it’s important to cover all the bases.