To word the question another way, how much of the foundation wall needs to be exposed below the siding? My neighbor isn't the best at home projects and decided to install a brick pad so that the soil is above my siding. Obviously aluminum siding on top of fire rated drywall (don't get my started) is not an appropriate foundation material, causing a lot of water damage. So I'm having him dig it out so the foundation is exposed, but I need to know how far to tell him he needs to dig.
Location is in Virginia, we usually get a good 6" snow storm every year, sometimes a lot more. Other parts of the neighborhood seem to have at least 6" or so.