In article s.com, "EXT" wrote:

Get some retaining wall block units and build a sloping wall on both sides
from the ground up to the doorway, fill between the block walls with the
dirt stacked on the right in the picture, top with sod, gravel or
interlocking bricks. This way you will have a permanent ramp and won't have
wood in contact with the soil which could start to rot or attract termites
into the cut ends or edges of the PT lumber.

Since when does PT lumber rot or attract termites? That's kinda sorta the
entire point of treated lumber...