The approval of a conditional use permit and the stipulations, limitations and conditions therein shall be applied to the property in question. All written and graphic materials officially submitted to the City shall be treated as a formal agreement between the applicant and the City. Once approved, no changes, modifications or alterations shall be made to any plan detail, standard, or specifications without prior submission of a plan modification request to the Zoning Administrator for review and approval. (Prior Code § 20-4-3)