All diverse supplier certifications shall be valid for a three-year period. The Purchasing Agent may grant temporary certification to those who have submitted applications to become certified as a County-based business, County-based small business, County-located Business, County-based Minority Business Enterprise and Minority Business Enterprise for a period not to exceed ninety (90) days from the date the certification application is submitted to the County. The Purchasing Agent may promulgate rules and regulations for the implementation and administration of temporary certification as a County-based business, County-based small business, County-located Business, and Minority Business Enterprise.