For what it's worth....
We have been enforcing the 2 rods or <25 ohms for a while. You get the occasionsl argument from an EC, but my usual response is
Ground rod testing equipment is about $2000.00. You probably need a day to familiarize yourself with the gear, and some time to perform the test.
A second rod, clamp, wire, is about $20.00
Make it a financial decision.
PS: NJ interpertation of "let the AHJ test it, and prove it's NG" does not fly. The proof of test results is upon the installer, be it the homeowner or the EC.
Nuff said
John
