So I've been creating an existing and proposed surface on a site. The elevations are all around the 690-725 msl. But each time I create the surfaces it's factoring the elevations down by a factor of 12 so that they're around 57-60' msl. I tried to play around with both sets of contours and scale them up by a factor of 12 but it still doesn't work. When I create the surfaces it still has them in the 57-60' msl range. I am sure it's some simple setting that I am overlooking but I can't seem to track it down.