With regard to auditor’s plats, as distinguished from proprietor’s plats, the Commission and Board of Supervisors shall have the right to waive provisions governing preliminary plat approval and public improvements outlined in the Ordinance, providing there is on file with the Commission a copy of the request of the Marion County Auditor ordering such plat and a letter from said Auditor stating that the plat as submitted meets the requirements for which the Auditor has ordered the plat.