The first stage of this multicache is virtual. Once at the posted coordinates, find two words on a sign. Then turn over your right shoulder to find a white number over a door. Turn further over your right shoulder and find a green number. Or maybe the colors are wrong. You will figure it out. Put the words and the two numbers into the checker in sequence to get the final coordinates a short distance away. The first stage is relatively straightforward. The second stage is not.
Better after busines hours or on the weekend.
You can validate your puzzle solution with certitude.