Does the AHJ want old time system 390 level bonding with 2 gauge or larger copper to every post or is he just looking for a EGC from the wiring method under the floor to one or two places in the floor in some misguided reading of 250.104?
I would want to hear the article he is citing.
I think you should be able to go right from a metal box on each circuit to the floor, using the "circuit likely to energize" logic.
Around here the real question would be what is under that floor and how are you getting up into the office? Stringing power cords through floor penetrations is not compliant as soon as you leave article 645 space.
