50 C.F.R. § 29.64
What other provisions apply to my operations?
Your pre-existing operations are also subject to the following regulations in this part 29:
(a) § 29.120(b), (d), (f), and (g) and § 29.121(a) and (c)-(f);
(b) § 29.170(a);
(c) §§ 29.180 and 29.181;
(d) § 29.190; and
(e) § 29.200.