If a zoning proposal is initiated by a party other than the local government, the initiating party shall be required to file a written, documented analysis of the impact of the proposed zoning with respect to each of the matters enumerated in Code Section 36-67-3, as well as any other supporting materials required by the local governing authority. The time at which such analysis is required to be filed shall be specified by each local governing authority, but the required time for filing shall not be less than seven days before any hearing or meeting of the governing authority at which the zoning proposal will be under consideration by the governing authority. Such a zoning proposal and analysis shall be a public record.