Concrete Pad

[quadzjr]

It's starting to subside so I should look into getting a new top layer thrown down...

GA

If yo ubelieve that the gravvel has been compacted enough you could spreadying some dry portland cement or concrete down. The water it. This will firm up the void spaces between the gravel.

Another option, is to pull the gravel out, sell it (as it is still valuable), and poor concrete.