Orange County Water & Wastewater Multi-Jurisdictional Hazard Mitigation Plan 2024
‒ Status: Completed. Regulatory compliance team and legislative team that tracks all regulatory requirement. Mitigation: Consider development of a project utilizing the recent hyper-local landslide study and resulting report (2021 WERT report) in combination with assessment of canyon facilities to determine potential for additional mitigation projects protecting against debris flow. ‒ Status: Remove. Mitigation: Assess the communications resilience in canyon areas; address capacity of canyon facilities to communicate with each other (some are linked and dependent), as well as sending communications back to IRWD staff in other locations monitoring facility status. ‒ Status: Completed. Mitigation: Perform monthly maintenance checks on permanent and portable back-up generators, and check fuel supply ‒ Status: Remove. This is part of preventative maintenance and does not need to be included here. Mitigation: Seek funding opportunities to rehabilitate or replace aging generators in order to maintain critical water and wastewater operations during power outages. ‒ Status: Complete. No funding found. Construction is underway for increasing fuel storage to 72 hours and replacing several generators. Mitigation: Establish a communication plan with Southern California Edison for use during an unplanned power outage to assess the potential duration and extent of the power outage, and associated need for generators and supplies. ‒ Status: Completed. Mitigation: The necessity for fire agency escorts into fire-affected areas has complicated physical access to facilities for refueling. Increase the capacity of current portable fueling equipment to allow better access to affected facilities with fewer trips during active fire activity. This project will also increase efficiency during power outages that do not involve wildfires. ‒ Status: Complete. All fuel tanks in the canyons are in construction to support 72 hours of operation. Mitigation: Extend battery life for the SCADA system by purchasing long runtime or extended long runtime uninterruptible power supply (UPS) to prevent outages in canyon facilities. Evaluate which locations would benefit from the upgraded UPS. ‒ Status: Complete. A new UPS was installed at Modjeska Reservoir to allow longer runtime during power outages. Manning, Williams, Fleming, Shaw, and Read pump stations all have generators. Shaw Reservoir is getting a new PLC panel & UPS as part of the current projects so that will help that site. Mitigation: Collaborate with the California Department of Fish and Wildlife (CDFW), CAL FIRE, and local firefighting agencies to establish a defensible space strategy in compliance with existing plans and environmental policies that provides IRWD the ability to maintain/remove vegetation around critical facilities in the wildfire hazard zone.
O-31
WSCP - 84
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