Have seen this a couple of times now with ground mounted PV systems...standard 5/8" x 8' ground rod inserted into one of the footings for the ground mount post system. I have concerns that this is not an accepted grounding electrode conductor by definition of either a rod electrode (not in direct contact with soil) or a concrete encased electrode (concrete is not in direct contact with earth as it is encased by a sonotube). Am I missing anything here?