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01/24/2011 as automatic fire sprinklers, may also have a positive effect. In dry climate on low humidity days, many materials are much more easily ignited. More fires are likely to occur and any fire, once started, can expand extremely rapidly. Automatic fire sprinkler systems can arrest a fire starting within a structure before it could spread to adjacent brush and structures. The aforementioned problems support the imposition of fire- protection and life- safety requirements greater than those set forth in the 2010 Edition of the California Fire Code. Finding 4: The City of Redwood City experiences water shortages from time to time. Those shortages can have a severe adverse effect on water availability for firefighting. Fires starting in sprinklered buildings are typically controlled by one or two sprinkler heads, flowing as little as 13 gallons per minute each. Hose streams used by engine companies on well - established structure fires operate at about 250 gallons per minute each. The estimated water need for a typical residential fire is 1250 to 1500 gallons per minute and upwards to 3500 gallons per minute for commercial buildings, according to the Insurance Services Office. Under circumstances such as earthquakes, when multiple fires can start within the city, the limited water demands of residential fire sprinklers would control and extinguish many fires before they spread from building to building. In such a disaster, water demands needed for conflagration firefighting probably would not be available. The aforementioned problems support the imposition of fire- protection and life- safety requirements greater than those set forth in the 2010 Edition of the California Fire Code. Finding 5: The topography of the City of Redwood City presents problems in delivery of emergency services, including fire protection. Hilly terrain, winding roads with little circulation, preventing rapid access and orderly evacuation. Much of these hills are covered with nonfire- resistive natural vegetation. In addition, to access and evacuation problems, the terrain makes delivery of water extremely difficult. Much of the hill areas are served by water pump systems subject to failure in fire, high winds, earthquakes and other power failure situations. The aforementioned problems support the imposition of fire protection and life- safety requirements greater than those set forth in the 2010 Edition of the California Fire Code. 5 Fire Suppression Rating Manual, Insurance Services Offices, New Jersey: 2003. ATTY /RESO /RESO.2066 7 Reso. # 15085 111510 Muff # 305