If the Administrator determines an emergency exists where all or parts of the recycled water system are unable to provide recycled water, the Administrator may approve an emergency temporary connection to the potable water system. Before such emergency temporary connection is made, the portion without recycled water shall be isolated by an air gap separation from the remainder of the recycled water system. This isolation shall occur at either individual services or on the offsite system, as determined by the Administrator. An approved backflow prevention device shall be installed on the potable water lines in accordance with this chapter and any and all applicable rules and regulations of the state and local health departments. The recycled water system shall be disinfected in accordance with Title 22 California Code of Regulations and AWWA C651 Standard prior to any use of potable water through the system. Before the emergency temporary connection or connections shall be removed, whether onsite or offsite, the user shall notify the City's Municipal Utilities' Water Quality Programs Division. The emergency temporary connection shall be removed before connection to the recycled water system is re-established. Re-establishment of recycled water service must be inspected and approved by the Administrator prior to resuming delivery of recycled water.