Ground rods can be connected at any point in the grounding system?
Just had inspector inform me of this after seeing a very long run in a crawlspace. I went from the ground rods to the panel. He said I could of just ran a much shorter run to any metal cold water pipe or split bolt onto the main bond jumper.
Never heard this and could not find in the code book.
Looking thru 250, going to 250.53 (D)(2) Exception leads some to believe what you describe as being compliant. However, reading the exception, it refers to 250.52 (A)(1) exception, which states 'industrial, commercial, and institutional structures....' So based on that I will lean towards a "NO".
The 'split bolt' also is a NO, as the connections should be irreversable. IMHO!
The grounding electrode conductor needs to be unspliced or spliced with a non reversible device but you can have a tap to a secondary electrode with any approved chapter 3 device as I read it.
The tap conductors shall be connected to the common grounding electrode conductor by exothermic welding or with connectors listed as grounding and bonding equipment in such a manner that the common grounding electrode conductor remains without a splice or joint.
If you are hitting a water pipe you need to do it within 5' of the entrance.
As far as the ground rods being connected at any point in the grounding system, I'm wondering if it could be considered a violation to connect the rods to the #4 CU that was run to a ufer, if that #4 was meant to be used as the sole connection for it, but maybe not.
Just read what John and Greg wrote and would add the words in 250.64(C) and that is the only place I find the word "irreversible", when they are taking about splicing the GEC. This gets used for example when the main service panel is being relocated and they want to extend the GEC to the new location instead of installing a whole new wire. Beyond that I think you can use exothermic welding or connectors Listed for grounding and bonding. I'm sure you could also us an "irreversible" connector if you choose to but that would probable depend on what was on the truck