Are there any code violations with this install? We install a concrete post with a meter can on one side and a square d 100 amp load center on the other side. We connect our GEC to the utility grounded conductor in the meter can. According to 250.28(D)2 I would install the system bonding jumper in the load center, the green screw from neutral bar to enclosure? Then we install a ground bar in the load center EGC. A co worker says that we also need another ground electrode not connected to the other one and run the GEC to the ground bar in the load center. These two electrodes are less than 1’ apart. 250.53(3) calls for at least 6’ apart correct? Is the second electrode necessary?