Attendant spread waste on road (7)
I believe the answer is:
steward
'attendant' is the definition.
(steward is a kind of attendant)
'spread waste on road' is the wordplay.
'spread' is an anagram indicator.
'on' is a charade indicator (letters next to each other).
'road' becomes 'rd' (abbreviation).
'waste' with letters rearranged gives 'stewa'.
'stewa'+'rd'='STEWARD'
(Other definitions for steward that I've seen before include "Overseer" , "Administrator, manager, or waiter" , "Crowd-control official" , "Ship's waiter" , "Sporting event supervisor" .)