I have a 300 KW generator. In the generator there is a 1200 amp CB. I have four 3 1/2 pvc. conduits, ran underground to a 1200 amp main lug emergency panel. In each of the conduits I will have four 350 kc mills, one for each of the phases and the neutral. And one 3/0 for the equipment ground. At the emergency panel the grounding electrode conductor goes to the cold water pipe then the building steel. From the emergency panel to the first ATS is a two inch PVC conduit ran underground. With four 3/0 and a number four equipment ground (the neutral is switched in the ATS) from the ATS to the critical panel, the pipe and the wire size are the same. I have a 3000 AMP MDP with a 3/0 run to the cold water pipe, and then the building steel for the grounding electrode conductor. From the MDP I have a two inch PVC conduit with four 3/0 and a number four bond wire ran underground to the critical ATS. My question is does anybody see a problem with my grounding or bonding?