E-500
Double check your fire pump service grounding. You are going to need to MBJ in the fire pump service (where the OCPD is). Typical is treating the ground in that conduit like a SSBJ and a GEC piped in to the fire pump service OCPD/ controller. I don't know how that impacts the generator / fire pump controller ATS and the generator's MBJ. It looks like you are marking the generator as separately derived.
The Bus section in MSB-2 that goes to the 4000A bus duct should have the MBJ in my opinion. If your contractor can mount a grounding bus bar and pipe in there that would be better. I have see issues with switchgear manufacturers and section changes that impact the MBJ and GFPE / neutral disconnect links for testing.
On your transformer, I would suggest marking a GEC in the transformer or at the 4000A OCPD. TBD1, TBD-2.
I would also mark your AFC at your 600A bus connections. All too often do I find that detail missing and then all the mains are 22kAiC and the AFC could be 50k or more. P.S. Bus has a SCCR rating for the conductor / equipment enclosure. I remember seeing it undersized on a pull section a while back. You might want to specify that on the plans.
Diamond #16 should say 120/280V 3ph 600A Main with an AFC or SCCR for the contractor to purchase. It is the wrong voltage (240V works but why say a different voltage than what is meant to be present).
Al GECs suck. it cant touch cement. Just mark it as 3/0 copper or per table 250.66 to a copper bus bar mounted in the electrical rooms where the gears and transformers are.
You have a 125A breaker with the conductor label "A225N". Verify conductor size. 2x
You have a 400A breaker with the conductor label "A225N". Verify conductor size.
You have a 225A breaker with a conductor label "A125N". Verify conductor size.
If plumbing is copper, I would suggest specifying a EGC sized to the apartment's feeder OCPD be bonded to the copper pipe at the point of the water's disconnect for that APT. It is a weird thing to specify but if they switch to PEX at the service or between where you bonded it and the apartment, rebond the copper water where it might become energized and that is at each apt individually. Or at a pump room if you have a motorized pump for pressure at certain floors. Also depends on the water heater for each apt. See 250.104(A)(2).
Other than the above, just verify wire sizes and EGC sizes and other OCPD typos.
