The county board of education of Aiken County shall notify the auditor of Saluda County in writing, on or before June thirtieth of each year, of the proposed tax levy for that portion of Saluda County involved in the consolidated school district, and the auditor of Saluda County shall levy, and the treasurer shall collect from the taxpayers of the area of Saluda County known as the Ridge Spring School District No. 2, such amount annually as represented in the written request submitted by the county board of education of Aiken County as provided herein. Provided, that such tax levy shall not exceed that levied for that portion of Aiken County involved in the same attendance area for school purposes. Provided, further, that no tax levy for school purposes in Saluda County shall be increased unless approval therefor shall have been first obtained in writing from the legislative delegation of the county, including the Senator.