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• <br />Anoka County Multi- Jurisdictional <br />All Hazards Mitigation Plan <br />4.2.2.10 Utility Failure — Power — Water Contamination <br />A major electrical power failure is defined as a failure of the electrical distribution system that <br />will exceed twenty -four hours in duration and effect greater than 33% of the geographical area <br />of the county. Electrical distribution systems can be interrupted for a number of reasons, but <br />those that have historically been the main cause are high winds, severe thunderstorms and <br />winter storms. A prolonged major electrical distribution system failure during the middle of <br />winter, accompanied by very cold temperatures, can have dramatic effects on a population <br />Drinking water comes from surface water and from ground water. Large -scale water supply <br />systems tend to rely on surface water resources such as rivers, lakes, and reservoirs. Smaller <br />water systems tend to use ground water pumped from wells that are drilled into aquifers, <br />geologic formations that contain water. Microbiological and chemical contaminants can enter <br />water supplies. Chemicals can each through soils from leaking underground storage tanks, <br />feedlots and waste disposal sites. Human wastes and pesticides can also be carried to lakes <br />and streams during heavy rains or snow melt. <br />4.3 Hazard Analysis <br />The Hazard Analysis section focuses on those <br />hazards initially identified in the Hazard Identification <br />section and that are of particular concern and <br />relevance to Anoka County. This section provides <br />specific historical occurrences in Anoka County and <br />identifies the future potential for a hazard event to <br />occur. This includes identifying location and spatial <br />extent of the event and best available data regarding <br />the impact on the county. <br />44 CFR Requirement 44 CFR Part <br />201.6(c)(2): The plan shall include a risk <br />assessment that provides the factual <br />basis for activities proposed in the <br />strategy to reduce losses from identified <br />hazards. Local risk assessments must <br />provide sufficient information to enable <br />the jurisdiction to identify and prioritize <br />appropriate mitigation actions to reduce <br />losses from identified hazards. <br />The table below is a comprehensive listing of specific hazards that are identified by the State of <br />Minnesota Hazard Mitigation Plan to potentially threaten Minnesota communities. All of these <br />hazards were initially considered for relevance in the hazard mitigation planning process. The <br />table below indicates the specific hazard types identified by Anoka County for further study and <br />analysis. <br />Summary of Natural and Manmade Hazard Threats to Minnesota Communities <br />Natural Hazards <br />Manmade Hazards <br />Earthquake <br />Attack - Conventional /Nuclear <br />X <br />Flooding /Flash Flooding <br />Civil Disturbance /Strikes/Workplace Violence <br />Landslides /Mudslides <br />Dam Failure <br />Land Subsidence Sinkholes Caves Mines <br />X <br />Hazardous Material Incidents <br />X <br />PandemicsNectors <br />Fixed Facilities <br />Severe Weather <br />Radiological Facilities <br />Drought <br />Transportation /Pipeline <br />Hostage Situation <br />Extreme Temperatures <br />X <br />Thunderstorm /Hail /High Winds /Lightning <br />X <br />Methamphetamine Labs <br />X <br />Tornadoes <br />X <br />Terrorism CBRNE -Cyber <br />Tropical Storms /Hurricanes <br />Transportation Accident <br />X <br />Winter Storm <br />X <br />Urban Fire <br />X <br />Wildfire <br />Utility Power/Water Contamination <br />90 <br />