Director approved Development Permits shall become effective upon approval, unless appealed. Minor Exceptions, Variances, all other Development Permits, and Conditional Use Permits, shall become effective 15 days following the final date of action (i.e., approval) by the appropriate review authority. Specific Plans, General Plan Amendments, Development Code Amendments, Development Agreements, and Surface Mining and Land Reclamation Plans shall become effective 30 days following the final date of action (i.e., adoption) by the Council. The letter of approval shall constitute the permit, and the resolution or ordinance shall constitute the amendment.