When the Council is satisfied that the information submitted is sufficient for its determination, it shall decide upon such plat. Evidence of approval by Council will be indicated by a stamp or statement reading "Approved by the Council, Village of Hunting Valley, Ohio - No Plat Required." The plat map of the division or the instrument of conveyance which has been thus stamped, dated and signed by both the Village Clerk and the Village Engineer shall constitute approval under this section.