ACA mid year auto escalation - notice timing?

[WCC]

Traditional 401k plan has an ACA feature with auto escalation (not EACA nor QACA). Plan is a calendar year plan but auto escalation occurs on July 1 to coincide with pay raises. Plan provides annual ACA and escalation notice between 30 - 90 days before the beginning of the plan year. 

Question - since the escalation takes effective later than 90 days after the annual notice is given, is a second notice required to be given later in the year?

I have searched the EOB and these boards, but can only find notice references when the escalation occurs on the first day of the plan year. I am thinking a second notice should be given, but am getting push back to prove it. 

Thanks

[C. B. Zeller]

EACAs have a required notice and QACAs have a required notice but I don't believe there is a required participant notice for ACAs which are neither EACA nor QACA.