If the final plat is approved, the chair­man of the Coun­ty Board shall affix his sig­na­ture to the plat and attach there­to a nota­tion that the plat has received final approval of the Coun­ty Board. The Coun­ty Clerk shall then attest the sig­na­ture of the Chair­man and affix the Coun­ty Seal there­to. If the final plat is dis­ap­proved, the rea­sons for such action and spe­cif­ic instances where the plat is not in con­for­mance with the require­ments here­in shall be not­ed.