This should be a quick P & G, however, parking on the street can be in short supply due to the many employees who work in the area. You may need to park in the lot and walk to GZ.
No need to search from the parking lot side. Between mid-summer and late fall, this entire business area is taken over by large "ninja-spiders", so watch out for crazy webs during this time of year!
It's not really a high traffic area unless the big rigs are there and are trying to make their necessary maneuvers. Muggles can be found lounging around at various times of the day, so keep your peepers open.
Last but not least, please place the cache back as you found it as best as possible.
Happy Caching!