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I I I The other hazards identified in Table 3 have the potential to occur within the community; however, with less effect on the community than previously mentioned hazards. These hazards are: urban fire, biological and chemical contamination, dam failure, water supply interruption, expansive soils, energy supply interruption, hurricanes and tropical storms, and major epidemics. The last group of hazards is made up of those events which are extremely unlikely to occur in the community, and consists of earthquakes, landslides, civil disobedience, ice and winter storms, sinkholes, and subsidence. The Hays County Mitigation Planning Committee recognizes that Hays County will continue to be exposed and be subject to both the impact of hazards described above and other hazards that may develop in the future. Furthermore, it is possible for a major disaster to occur at any time and at any place. In many cases dissemination of warning to the public and implementation of increased readiness measures may be possible. Still, some emergency situations occur with little or no warning. The following paragraphs identify many of the hazards that Hays County may potentially encounter. Additional detailed information about specific extreme weather events is contained in Attachment "D". Information about the extreme weather events was gathered from the National Climatic Data Center, a division of the National Weather Service. The Hays County Mitigation Planning Committee and consultant, Halff Associates, Inc., completed hazard profile worksheets for each of the hazards identified in Table 3, "Hays County Hazard Rating Summary". The hazard profile worksheets identify potential severity, frequency and cascading potential for each of the hazard events. Additionally, both the risk and vulnerability to each hazard within the community is analyzed. Copies of the hazard profile worksheets, which were prepared for selected hazards, are contained in Attachment "D", 2.3 Flood Hazard The Hays County Mitigation Planning Committee identified floods as one of the major hazards affecting Hays County. Since the early 1970's, the Federal Emergency Management Agency (FEMA) and its predecessor agency, the Federal Insurance Administration (FIA), have published Flood Hazard Boundary Maps (FHBM), conducted Flood Insurance Studies and published Flood Insurance Rate Maps (FIRMs) for Hays County (unincorporated area) and individual communities located in Hays County. In 1998, the Federal Emergency Management Agency (FEMA) published the Hays County and Incorporated Areas Flood Insurance Rate Map (FIRM) which is countywide mapping that includes the Hays County unincorporated area and all incorporated communities within the county. Table 4, "Hays County Existing NFIP Mapping" is a summary of the current Hays County FIRM. Table 4 includes a listing of Flood Insurance Rate Map (FIRM) map panels, FEMA identification number, publication date, map scale, list of streams delineated, floodways delineated and remarks. The "Remarks" section of Table 4 includes NFIP status for all incorporated areas in Hays County showing the initial identification date, Post FIRM date and date of the effective FIRM. The Post FIRM date is the mandatory date for communities to enforce elevation requirements for the lowest flood of new construction and substantial improved structures. Hays County, Texas Mitigation Plan 32