SR 06:026 - Laserfiche WebLink

"k.l "'< ,,~)i'-..,. COMPREHENSIVE EMERGENCY MANAGEMENT PLAN c Landslides-850 urban acres are in mostly existing landslide areas c Wildfires-903 urban acres are subject to high or very high wildfire threat, while 6,157 urban acres are in wildland-urban interface threat areas c Dam Inundation-6,294 acres are subject to dam inundation due to the Lake Del Valle Dam. From Pleasanton's All Hazard Assessment, the 235-foot Del Valle Dam impounds a reservoir with a total capacity of 77,100 acre-feel. To provide a flood control reserve, it normally stores from 25,000 to 40,000 acre-feel. (An acre-foot is 325,900 gallons, enough water to cover one acre of land one foot deep.) c Drought-all acres are subject to drought The City of Pleasanton also examined the hazard exposure of infrastructure based on the information on ABAG's website at htlp:/Iauake.abaa.ca.aov/mitiaation/pickdbh2.html. Of the 313 miles of roadway, 3 miles of transit, 4 miles of railroad and 282 miles of underground pipeline in the City (Note that some of the hazards listed below would not affect the underground pipeline in those areas. In addition, these pipelines carry water, petroleum and natural gas.): c Earthquake Faulting-According to the CGS Alquist-Priolo Earthquake Fault Zone information on the ABAG website, the Northern Calaveras Fault runs through the City. 15 miles of roadway and 13 miles of pipeline are within this zone. c Earthquake Shaking-313 miles of roadway, 3 miles of transit (BART-Bay Area Rapid Transit District), 4 miles of railroad, and 282 miles of pipeline are in the moderate to high categories of shaking potential c Earthquake-Induced Landslides- The California Geological Survey has not completed mapping of this hazard in the City of Pleasanton. However, because few areas have been mapped as landslides, this hazard is viewed as similar to that posed by weather-related landslides as shown below. c Earthquake Liquefaction-201 miles of roadway, 3 miles of transit, 3 miles of railroad, and 175 miles of pipeline are in areas of moderate, high or very high liquefaction susceptibility o Flooding-22 miles of roadway and 19 miles of pipeline are in the FEMA 100 year flood plain, while 60 miles of roadway, 1 mile of railroad, and 51 miles of pipeline are in the 500 year flood plain c Landslides-27 miles of roadway and 27 miles of pipeline are in mostly existing landslide areas c Wildfires-32 miles of roadway and 32 miles of pipeline (water and natural gas) is in a high or very high wildfire threat areas, while 200 miles of roads, 2 miles of transit, 3 miles of railroad and 181 miles of pipeline are in wildland-urban interface threat areas c Dam Inundation-184 miles of roadway, 1 mile transit, 162 miles of pipeline and 4 miles of railroad are subject to dam inundation ANNEX G - Local Hazard Mitigation Annex Updatedl~121O' 5