This is in an overflow parking area for the nearby depot.
Start at the posted coordinates where there is a large tree. Head easterly to the large metal post. Then continue walking to the 5th smaller metal post. Turn left and walk a short distance to the non-metallic tall post. Your prize awaits.
A big thanks to Muggle Finder for the cache container!
Congrats to Team Psychopuppy for the FTF!