Effective date of State plan approval

Effective date of State plan approval means the effective date that the EPA approves the State plan. The Federal Register specifies the date in the notice that announces EPA's approval of the State plan.

Source

40 CFR § 60.1940

---

Scoping language

Terms used but not defined in this section are defined in the CAA and in subparts A and B of this part.

---

Is this correct? or