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Santa Ana 2020 Water Shortage Contingency Plan <br />3-10 <br />3.4.2 Supply Augmentation <br />The supply augmentation actions are described in DWR Table 8-3 (Appendix A). These augmentations represent <br />short-term management objectives triggered by the MET’s WSDM Plan and do not overlap with the long-term new <br />water supply development or supply reliability enhancement projects. Supply augmentation is made available to <br />the City through MET and OCWD. The City has the ability to pump additional groundwater from the OC Basin or <br />purchase additional imported water from MET as a MET member agency. However, both additional pumped <br />groundwater and purchased imported water are subject to rate penalties from OCWD and MET, respectively. <br />MET’s reliability portfolio of water supply programs including existing water transfers, storage and exchange <br />agreements to supplement gaps in the City’s supply/demand balance. MET has developed significant storage <br />capacity (over 5 million AF) in reservoirs and groundwater banking programs both within and outside of the <br />Southern California region. Additionally, MET can pursue additional water transfer and exchange programs with <br />other water agencies to help mitigate supply/demand imbalances and provide additional dry-year supply sources. <br />3.4.3 Operational Changes <br />During shortage conditions, operations may be affected by supply augmentation or demand reduction responses. <br />The City considered their operational procedures to identify changes that can be implemented to address water <br />shortage on a short-term basis, including: <br /> Avoid hydrant flushing when possible. <br /> Alter maintenance cycles. <br /> Reduce pressure. <br />3.4.4 Additional Mandatory Restrictions <br />Water Code Section 10632(a)(4)(D) calls for “additional, mandatory prohibitions against specific water use <br />practices that are in addition to state-mandated prohibitions and appropriate to the local conditions” to be included <br />among the WSCP’s shortage response actions. The City will identify additional mandatory restrictions as needed <br />based on the existing Santa Ana Municipal Code Chapter 39 Article VI Water Shortage Contingency Plan <br />(Appendix B). The City intends to update any mandatory restrictions in a subsequently adopted ordinance which <br />will supersede the existing ordinance. <br />3.4.5 Emergency Response Plan (Hazard Mitigation Plan) <br />A catastrophic water shortage would be addressed according to the appropriate water shortage level and <br />response actions. It is likely that a catastrophic shortage would immediately trigger Shortage Level 6 and <br />response actions have been put in place to mitigate a catastrophic shortage. In addition, there are several Plans <br />that address catastrophic failures and align with the WSCP, including MET’s WSDM and WSAP, the City’s HMP, <br />and the Water Emergency Response Organization of Orange County (WEROC)’s Emergency Operations Plan <br />(EOP). <br />MET’s WSDM and WSAP <br />MET has comprehensive plans for stages of actions it would undertake to address a catastrophic interruption in <br />water supplies through its WSDM and WSAP. MET also developed an Emergency Storage Requirement to <br />mitigate against potential interruption in water supplies resulting from catastrophic occurrences within the