Luckily we don’t have too much problem with that as the surrounding land drains pretty well although for this renewal project we did cut out some clay in certain sections to make a deeper foundation and put some type 1 stone in so the bottom ballast sits on that. In other places we scrape some of the old ballast that we can re-use and compact the rest to form a new base before new ballast on top which seems to work well for us.