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Eugene -Springfield Area Natural Hazards Mitigation Plan <br />5. Annexes <br />requirements EWEB would follow during an actual geomagnetic disturbance to limit <br />damage to our systems. <br />A.5 Evaluation of Recommended Action Items <br />Table A-5 lists the initiatives that make up the EWEB hazard mitigation plan. EWEB <br />is the lead agency and funding source for these initiatives unless otherwise noted. <br />Table A-5 Hazard Mitigation Action Items <br />New <br />Exi <br />Mitigation Action <br />Timeline <br />Assets <br />AssetssTMT <br />d <br />Cost <br />X <br />Earthquake, <br />Seismic upgrades of critical <br />$750K6 <br />2020-2021 <br />Geomagnetic <br />facilities: Rebuild Currin <br />(substation) <br />disturbances <br />Substation using IEEE' <br />standards to reduce risk of <br />interference with electrical <br />equipment from geomagnetic <br />disturbances. <br />X <br />X <br />Earthquake <br />Seismic upgrade of critical <br />$3.5 M <br />2019-2025 <br />facilities: Changes to EWEB <br />Roosevelt Operations Center <br />(ROC) to remain operational <br />after earthquake event; move <br />EWEB dispatch into ROC from <br />EWEB Headquarters and build <br />new back-up control center in <br />seismically sound building at <br />Hayden Bridge. <br />X <br />Earthquake <br />Seismically anchor <br />$1.2 M <br />2019-2027 <br />transformers, and control <br />building, and add flexible bus <br />connections at nine <br />substations. <br />X <br />Multi -Hazard <br />Seismic upgrade to critical <br />$7.5M <br />2018-2020 <br />(earthquake, <br />facilities: New Holden Creek <br />flood-riverine, <br />Substation built to seismic <br />winter storms, <br />standards replacing Leaburg <br />windstorms, <br />Substation on riverbank using <br />geomagnetic <br />IEEE standards; removes 17 <br />disturbances) <br />miles overhead electric lines. <br />s Institute of Electrical and Electronics Engineers (IEEE) 693 <br />e Total project cost of Curtin Substation Rebuild is estimated at $7.5M. Only costs associated with <br />seismic upgrade, estimated at 10% of new construction overall costs, are included. <br />5-15 January 2020 <br />