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4.4.B. - Page 25 <br /> climactic, geographical, and topographic conditions largely articulated in the City's <br /> General Plan and associated environmental impact report. Modifications which are <br /> necessitated by particular local conditions are delineated below. <br /> 3. Climatic: <br /> The areas served by the City, on average, experience an annual rainfall between 8 to <br /> 18 inches. This rainfall can be expected between October and April of each year and <br /> is based on the 100 year weather almanac. However, during the summer and early fall <br /> months there is little, if any, measurable precipitation. During this dry period, the <br /> temperatures are usually between 70°-90° with light to gusty westerly winds. These <br /> drying winds, mixed with the natural vegetation, which is dominant throughout the area, <br /> create a hazardous fuel condition, which further creates extensive grass and brushland <br /> fire risk. With residential developments encroaching into these wooded and grass, or <br /> brush-covered areas, wind and terrain-driven fires could have severe consequences <br /> to improved properties at risk. This has been demonstrated on several occasions in <br /> other areas of our State Fire/Rescue Aid Regions. <br /> 4. Geographical: <br /> A. Geoqraphic Location. The area served by the City is located in San Mateo County. <br /> This area identified as being in the southern region of the county. <br /> B. Seismic Location. The relatively young geological processes that have created the <br /> San Francisco bay region are still active today. Seismically, the City sits along the <br /> active San Andreas Fault, and is rated as a Seismic Zone E. <br /> C. Size and population.Areas served by the Fire Department encompass approximately <br /> 19 square miles and 80,000 people. <br /> D. Roads and Streets. The number of vehicle miles driven is steadily increasing despite <br /> limited growth. Many older streets are narrow and steep. The impact of additional <br /> planned developments and increased traffic flow will continue to create an effect on <br /> the delivery of fire protection services. <br /> E. Soil Conditions. The City of Redwood City lay's in the southern end of San Mateo <br /> County. The areas closest to the Bay are overlain by unconsolidated fine silty clay, <br /> known as Bay Mud, which varies in thickness from a few feet to as much as thirty <br /> (30)feet. Bedrock lies beneath the area at depths generally three hundred (300)feet <br /> or more. The topography is essentially flat, dropping from an elevation of eight <br /> hundred (800)feet to sea level. The slope of the city extends upwards on the western <br /> side. Slopes range from (0) degrees to more than (20) degrees on some streets. <br /> F. Veqetation. The hilly portion of the City of Redwood City contains trees, dense brush <br /> vegetation and a heavy growth of natural grasses. The City and surrounding areas <br /> suffer several wildland fires each year. <br /> G. Younqer Bay Mud. Within the City, specifically along the San Francisco Bay, is <br /> underlain with Younger Bay Mud, which does not allow for infrastructure subject to <br /> corrosion. <br /> ATTY/RES0.2932/BUILDING&FIRE CODE FINDINGS <br /> REV: 12-04-13 JS <br /> Page 2 of 4 <br />