Upon accepting an application for annexation pursuant to Code Section 36-36-21 or a petition for annexation pursuant to Code Section 36-36-32, or upon adopting a resolution calling for an annexation referendum pursuant to Code Section 36-36-57, the governing authority of the annexing municipality shall within five business days give written notice of the proposed annexation to the governing authority of the county wherein the area proposed for annexation is located. Such notice shall include a map or other description of the site proposed to be annexed sufficient to identify the area. Where the proposed annexation is to be effected by a local Act of the General Assembly, a copy of the proposed legislation shall in accordance with Code Section 28-1-14.1 be provided to the governing authority of the county wherein the proposed annexation is located at the same time the notice of intent required by state law is published.