An issue has surfaced regarding the highest/lowest adjacent grade to a manufactured home with metal skirting. The ground has been excavated about 1' on the low side to allow for home placement, but there is no fill against the skirting. The undisturbed ground starts about 2' away from the skirting. The FEMA instructions say "imediately next to the building". Where is "imediately next to" in this case?