The City of Thunder Bay adopts an official plan amendment that is exempt from approval on June 21, 2022. One appeal is filed on July 7, 2022. The appeal is later withdrawn on August 6, 2022. On what date does the official plan amendment come into effect?

1. June 21, 2022.
2. June 22, 2022.
3. July 7, 2022.
4. August 6, 2022.
5. August 7, 2022.