The scenario is a building with a 1000 Amp stand up U.G.utility pull section, main and distribution. The utility terminates the service lateral in the bottom of the pull section. A new 200 amp. meter is installed next to and fed from the utility pull section via rigid conduit. If the existing neutral is already connected to an existing grounding electrode system. Where does the NEC say you have to drive another rod at the new meter? We always do but after carefully reading 250.24(A)and 250.24(1)2002 NEC it seems like it is not really required. Any opinions besides more is better?