The electric tariff schedules have been approved by resolution by the City Council of the City of Anaheim and are the effective rates and rules of the Electric Utility. The City Council may amend or cancel these rates and rules by resolution. No official or employee of the City of Anaheim or the Electric Utility has any authority to waive, alter, or amend these tariff schedules in any respect, except in the manner provided by the tariff schedules.