Bob,
110.11 for the runoff thats undoubtedly entering this with the missing cover..
110.26(F)(2) for lack of protection from the sprinklers & lack of a "suitable enclosure"
314.15(A) for not placing this to prevent moisture from entering & accumulating in the box..
300.6(B) for the box in direct contact with the earth, someone posted pics in another thread of some buried Bell boxes.. I can't find the link right now...

-Randy