12 CFR §252.21

1. (a)General applicability. A bank holding company must comply with the risk-committee requirements set forth in this subpart beginning on the first day of the ninth quarter following the date on which its average total consolidated assets equal or exceed $50 billion.
2. (b)Cessation of requirements. A bank holding company will remain subject to the requirements of this subpart until the earlier of the date on which:
   1. (1)Its total consolidated assets are below $50 billion for each of four consecutive calendar quarters; and
   2. (2)It becomes subject to the requirements of subpart D of this part.