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<br />Resolution 2025-XXX <br />Page 3 of 8 <br /> <br />century with 50 percent of that growth centered in Southern California. <br />Due to storage capacities and consumption, and a limited amount of <br />rainfall, future water allocation is not fully dependable. This necessitates <br />the need for additional and on-site fire protection features. <br /> <br />D. These dry climatic conditions and winds contribute to the rapid spread of <br />even small fires originating in high-density housing or vegetation. These <br />fires spread very quickly and create a need for increased levels of fire <br />protection. The added protection of fire sprinkler systems and other fire <br />protection features will supplement normal fire department response by <br />providing immediate protection for the building occupants and by <br />containing and controlling the fire spread to the area of origin. Fire <br />sprinkler systems will also reduce the use of water for firefighting by as <br />much as 50 to 75 percent. <br /> <br />II. Topographical conditions <br /> <br />A. Natural; slopes of 15 percent or greater generally occur throughout the <br />foothills of Orange County. The elevation change cause by the hills <br />creates the geological foundation on which communities within Orange <br />County are built and will continue to build. With much of the populated <br />flatlands already built upon, future growth will occur on steeper slopes and <br />with greater constraints in terrain. <br /> <br />B. Traffic and circulation congestion is an artificially created, obstructive <br />topographical condition, which is common throughout Orange County. <br /> <br />C. These topographical conditions combine to create a situation, which <br />places fire department response time to fire occurrences at risk, and <br />makes it necessary to provide automatic on -site fire-extinguishing systems <br />and other protection measures to protect occupants and property. <br /> <br />III. Geological Conditions <br /> <br /> The Orange County region is a densely populated area that has buildings <br />constructed over and near a vast and complex network of faults that are <br />believed to be capable of producing future earthquakes similar or greater in <br />size than the 1994 Northridge and the 1971 Sylmar earthquakes. Earthquake <br />faults run along the northeast and southwest boundaries of Orange County. <br />The Newport-Inglewood Fault, located within Orange County, was the source <br />of the destructive 1933 Long Beach earthquake (6.3 magnitude) which took <br />120 lives and damaged buildings in an area from Laguna Beach to Marina <br />Del Rey to Whittier. In December 1989, another earthquake occurred in the <br />jurisdiction of Irvine at an unknown fault line. Regional planning for <br />reoccurrence of earthquakes is recommended by the State of California, <br />Department of Conservation.