Multi-Hazard Mitigation Plan: 18. Risk Assessment

Home

Chapter 18:Risk Assessment Total aggregated losses for each event are given below: • Hurricane Event Total Losses—Essential Facilities $48,000,000 • Hurricane Event Total Losses—General Building Stock $7,138,000,000 • Earthquake Scenario Total Losses—Essential Facilities $117,000,000 • Earthquake Scenario Total Losses -General Building Stock $4,243,000,000 From the results of these analyses a short list of the critical facilities with the highest economic losses or greatest loss of functionality (most severely damaged) was created for review by county officials. This list is included below: Group Kaiwalani Fine Station,Honokaa Fie Station,North Kohata Fire Retrofits ptimatily consist of installing a Station,and the Central Fie Station Dispatch Office complete load path for hurricane wind uplift Group B Kona Civic Center Fire Station,Kona Civic Center Police Station, Work primarily consist of seisnric Keaau Fire Station,Keaau Police Station,and Laupaliochoe Police retrofits of masonry and concrete, Station(LPS) except LPS Goup C Kohata Hospital Scisuric and Hunicanc retrofits Group D Kau Hospital Hurricane and some Seisnric retrofits From the short list of highest expected loss facilities, Group B plus the Central Fire Station Dispatch Office and Kau Hospital were selected by HCDA for detailed Benefit Cost Analysis. Ka'u Hospital in Pahala, Hawaii, provides long-term care and acute care, obstetrics, emergency room, ambulance, and outpatient services. It is an essential facility for the southern Hawaii County districts of Puna, Kau, and South Kona. It is located in the Kau District of the County of Hawaii, the region of highest seismic hazard in the state, highest concentration of volcanic gas emissions, and is subject to hurricanes and windstorms since Hawaii is a hurricane and windborne debris hazard region. Built in 1968, its as-built condition predates modern requirements for seismic bracing of nonstructural elements and protection against windborne debris impacting windows. A common gas produced during the nearby Hawaiian eruptions just to the east that is potentially harmful to human health is sulfur dioxide. Exposure to gases can endanger those with heart and respiratory ailments. The Kau Hospital Hurricane and Seismic Retrofit project was developed as a result of the Hawaii County All-Hazards Assessment of Critical Facilities investigation that was conducted in 2008-2009. After a preliminary engineering design and cost estimate, a Benefit-Cost Analysis was performed to evaluate the mitigation project because the analysis indicated high vulnerability to seismic and hurricane hazards.. This same detailed evaluation provided the information necessary to submit the full PDM grant application to FEMA. Type of mitigation activity proposed: Non-structural Retrofitting of Existing Buildings and Facilities: Modifications to the non- structural elements of an existing isolated hospital facility to reduce or eliminate the risk of future damage, protect patients, and ensure continuity of operations. Non-structural retrofits include bracing of building ceilings to prevent earthquake damage, protection against windborne debris breaching of the enclosure, and protection of ventilation systems, 18-13 Hawaii County Multi-Hazard Mitigation Plan