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2025 Hazard Mitigation Plan <br />Kittitas Gounty, Washington <br />10% lo 24% of the total assessed property value is exposed to a <br />hazard.2 <br />1Low9% or less of the total assessed property value is exposed to a hazard <br />0No Vulnerability None of the total assessed property value is exposed to a hazard <br />Probability <br />,ivli;t,.11 tr ilrtit <br />Vulnerability <br />FactorDescription <br />4.3.3.3. Changes in Development <br />Changes in development in the past five (5) years have increased or decreased the community's <br />vulnerability/exposure to the hazard. Table 4-8 outlines the changes in development factors used in the <br />risk assessment calculation of this Plan. <br />Table 4-8. Changes in Development Factor <br />Each category was assigned a weighting factor to reflect the significance, consistent with those typically <br />used for measuring the benefits of hazard mitigation actions - a weighting factor of three (3) was assigned <br />for Population Exposure, and a weighting factor of one (1) was assigned for Properiy Exposed and <br />Changes in Development. <br />4.3.4. lmpact Factors <br />Hazard impacts were assessed in eight (8) categories - population and life/safety, underserved/equity, <br />property damages, economic, environmental, essential operations, future development, and climate <br />change. Numerical impact factors were assigned as follows. <br />4.3.4.1. Population and Life Safety Factor <br />Population and life safety values were assigned based on the best available data (historical and <br />probabilistic) for people vulnerable to the hazard event and whether the affected population is likely to <br />experience adverse impacts from the hazard incident. Table 4-9 outlines the population and life safety <br />factors used in the risk assessment calculation of this Plan. <br />Table 4-9. Population and Life Safety Factor <br />3Changes in development have increased the vulnerability/exposure of <br />the community to the hazard by 10% or more. <br />2Changes in development have increased the vulnerability/exposure of <br />the community to the hazard between 5o/o and 9o/o. <br />Low Changes in development have increased the vulnerability/exposure of <br />the community to the hazard bV 4% or less.1 <br />0No Vulnerability Changes in development had no effect and/or have decreased the <br />vulnerability/exposure of the community to the hazard. <br />Probability Description <br />il;l,.l,ji iLl ,,i' <br />Vulnerability <br />Factor <br />Populations exposed to this hazard are likely to experience significant <br />adverse impacts, such as fatalities and severe injuries.3 <br />2Populations exposed to this hazard are likely to experience some <br />adverse impacts, such as injuries requiring acute medicalcare. <br />Probability Description <br />i'lt,r,,lrl rr <br />lmpact <br />Factor <br />Chapter 4: Hazard ldentification and Risk Assessment 60