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interface areas. Most wildland or interface fires have human sources of ignition <br /> - arson, sparks from vehicles or electric lines, discarded smoking materials, or <br /> trash or debris fires that 9et out control, and so on. Thus, the probability of a <br /> given acre burning is higher in interface areas than for the wildland areas of <br /> Lane County as a whole. <br /> <br />Developments in wildland/urban interface areas face a range of levels of fire risk, <br />depending on a number of factors. Developments that have all of most of the following <br />attributes are at the highest level of risk: <br /> <br /> 1 ) High vegetative fuel loads, with a high degree on continuity of fuel load <br /> few significant firebreaks). Risk may be particularly high if the fuel load is <br /> grass, brush and smaller trees, subject to being at very low moisture levels in <br /> short duration drought periods. <br /> <br /> 2) Higher slopes, which cause fires to spread more rapidly than in flatter terrain. <br /> <br /> 3) Limited fire suppression capacity, including limited water supply capacity for <br /> fire suppression purposes, limited fire fighting personnel and apparatus, and <br /> typically long response times for fire alarms. <br /> <br /> 4) Limited access for fire fighting apparatus and limited evacuation routes for <br /> residents at risk. <br /> <br /> 5) Construction of structures to less than fully fire-safe practices, and <br /> <br /> 6) Lack of maintenance of firebreaks and defensible zones around structures. <br /> <br />Overall, for central Lane County, including the Eugene/Springfield Metro Area, the <br />threat of wildland fire and/or wildland/urban interface fires appears moderate, in large <br />part because of the typically high levels of rainfall. However, depending on specific <br />conditions in developments in wildland/urban interface areas, the threat may be <br />moderate to high, especially during periods of drought. The specific level of risk for <br />each development depends on the particular risk factors as summarized above. A <br />comprehensive evaluation of the level of risk for developments in wildland/urban <br />interface areas requires a specific evaluation of the risk attributes listed above for each <br />development area. <br /> <br />A review of topography, forest cover and development patterns for the Eugene/ <br />Springfield Area suggest that the following portions of the Eugene/Springfield Metro <br />Area likely have higher levels of risk for wildland/urban interface fires than the <br />Eugene/Springfield Metro Area as a whole: <br /> <br /> 1. the south hills areas of Eugene, <br /> <br /> 2. the south hills areas of Springfield, especially areas south of Main between <br /> South 2nd Street and the quarry off South 28th Street and east of 58th Street, and <br /> <br /> 3. the northeastern portion of Springfield, including areas outside the <br /> Eugene/Springfield Metro Area Plan boundary. <br />Public Review Draft: August 6, 2004 <br /> 9-17 <br /> <br /> <br />