I worked at this New Jersey facility when the parking lot solar was installed. The parking availability was only minimally impacted. Base pylons were installed over a period of about a month. That involved condoning off a small section of the lot while a crew cut a four foot square through the asphalt then used an powered auger to quickly excavate for the concrete pour. As I recall the crew completed a couple of those per day. The final installation of mounting structure, panels and electrical connections was done over a number of weekends. There was no trenching involved. As I recall the construction went surprisingly fast. I spoke with one of the building maintenance supervisors a couple of months after completion. He stated they were extremely happy with the power savings and return on investment. https://www.google.com/maps/@40.8458928,-74.0970349,3a,75y,1...

* edited out reference to surviving hurricane. Can't recall exact year this went up.