Can you put a patio on a cesspool

[Carey]

I have looked around a bit... but putting this question out there, as we think we have finally found out where our cesspool might be, and it may be right where we would like a patio....

(the HD map card was not all that precise, and it seems the cesspool is 8 feet closer to the house than we thought....)

So can you place a patio over the cesspool?