There isn't a great deal of contact in this Grounding system.
From what I can see, the clamp around the pipe and LB, is just sitting there, with a gap you could drive a car through, between the metal surfaces, you can tell the clamp has moved since the painting took place.
Are those sorts of clamps allowed to be used for Electrical connections?.
Also, around that (Gas?) pipe, I see that one side of the clamp is busted, so there ain't going to be much contact there either.
Add, into the equation, some idiot with an Airless spray gun, and the whole thing is pretty much a waste of time.
BTW, Scott, is that receptacle rated for exterior use?.
Is that a wire between the LB and the wall?.