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area and nearby faults. These include the <br /> faults of Greenville, Calaveras, Hayward and <br /> the most well known San Andreas Fault. Also <br /> of note are the smaller faults of Livermore, <br /> Tesla and Las Positas. The major area faults <br /> have shown some activity within the past few <br /> years. The probability of additional seismic <br /> activity in the Livermore-Amador Valley has <br /> been indicated by seismologists. The activity <br /> to expect would most likely range between 5 <br /> and 7 on the Richter Scale. Because of this <br /> geological threat the potential for extensive <br /> fire damage and loss of life is shown in the <br /> findings above. <br /> <br />3. The topographic conditions, within the specified <br /> areas of the City of Pleasanton are such that: <br /> <br /> a. Extensive fire damage due to multiple fires <br /> involving untreated wood shake or shingle <br /> building exteriors ignited because of exposure <br /> to fires which spread beyond the building of <br /> origin. <br /> <br /> b. Extensive fire damage and potential for loss <br /> of life due to the inability of the fire <br /> department to gain rapid access to fires due <br /> to terrain, slopes, landscaping, size of <br /> building, and relationship to other buildings <br /> in time to stop a free burning roof fire from <br /> consuming the entire roof and attic area. <br /> <br /> c. The City of Pleasanton is primarily located <br /> within a valley with a mountain range to the <br /> west (some of which is in the City). This <br /> range reaches an elevation of approximately <br /> 1000 feet. To the east and southeast there is <br /> "hilly" terrain which reaches 700 feet of <br /> elevation and is within the City. In <br /> addition, there are flatland areas bordering <br /> the City which are agricultural in nature and <br /> highly flammable grain and hay crops abound. <br /> All of these areas have been determined, by <br /> the California Department of Forestry to <br /> present a fire hazard severity of moderate to <br /> extreme. For ignition these areas only need a <br /> spark from an unprotected chimney opening. <br /> <br /> d. The City is also bisected by numerous man-made <br /> and natural structures, i.e., creeks, canals, <br /> arroyos, underpasses, overpasses, rail tracks <br /> and trestles, bridges and a major highway. <br /> These are natural phenomena of the terrain or <br /> man-made to enhance travel into, out of, and <br /> within the City. There are deadend streets, <br /> cul-de-sacs of over 500 feet and grades to be <br /> <br /> <br />