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Beaverhead County, Montana Cityof Dillon, Montana Town of Lima, Montana Pre-Disaster Mitigation2017 Plan September 2017 Revision Draft Topical Report Rsi-Xxxx

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Beaverhead County, Montana Cityof Dillon, Montana Town of Lima, Montana Pre-Disaster Mitigation2017 Plan September 2017 Revision Draft Topical Report Rsi-Xxxx BEAVERHEAD COUNTY, MONTANA CITYOF DILLON, MONTANA TOWN OF LIMA, MONTANA PRE-DISASTER MITIGATION2017 PLAN SEPTEMBER 2017 REVISION DRAFT TOPICAL REPORT RSI-XXXX April PREPARED FOR Beaverhead County, MT City of Dillon, MT Town of Lima,Draft MT MARCH 2017 respec.com BEAVERHEAD COUNTY, MONTANA CITY OF DILLON, MONTANA TOWN OF LIMA, MONTANA PRE-DISASTER MITIGATION2017 PLAN SEPTEMBER 2016 REVISION DRAFT TOPICAL REPORT RSI-XXXX April PREPARED BY Zachary T. Collins, CFM, GISP RESPEC 3110 Valley Commons Drive, Suite 4 Bozeman,Draft MT 59718 PREPARED FOR Beaverhead County, MT City of Dillon, MT Town of Lima, MT MARCH 2017 respec.com EXECUTIVE SUMMARY Disasters can strike at any time in any place. In many cases, actions can be taken before disasters strike to reduce or eliminate the negative impacts. These actions, termed mitigation, often protect life, property, the economy, and other values. The Beaverhead County Pre-Disaster Mitigation Plan addresses 13 major hazards with respect to risk and vulnerabilities countywide, including the City of Dillon and the Town of Lima. Through a collaborative planning process, the Beaverhead County hazards were identified, researched, profiled, updated, and prioritized. The major hazards – aircraft accident, disease and environmental contamination, drought, earthquake, flood, hazardous material release, severe weather, terrorism and civil unrest, transportation accident, urban fire, utility and energy failure, volcanic ash fall, and wildfire – are each profiled in terms of their hazard description, history, probability and magnitude, mapping, vulnerabilities, data limitations, and other factors. The vulnerabilities to critical facilities; critical infrastructure; structures; the population; economic, ecologic, historic, and social values; and future development are updated for each hazard. Based on the probability and extent of potential impacts identified2017 in the risk assessment, the prioritizations of hazards within Beaverhead County are as follows: (Note that individual jurisdictions have their own prioritizations based on the hazards and vulnerabilities specific to their locations but are generally similar to that of the county.) Table ES-1. Beaverhead County Hazard Prioritizations Level Hazard Earthquake AprilFlood High Hazard Wildfire Severe Weather Utility and Energy Failure Disease and Environmental Contamination Hazardous Material Moderate Hazard Release Drought Urban Fire Terrorism and Civil Unrest Volcanic Ashfall DraftLow Hazard Aircraft Accident Transportation Accident The following goals are outlined in the plan’s mitigation strategy, based on the results of the risk assessment: / Goal 1: Reduce risks from all hazards through comprehensive mitigation activities / Goal 2: Reduce impacts from flooding i / Goal 3: Minimize risk of wildfire at the urban interface / Goal 4: Reduce risk of hazardous material incidents RSI-xxxX DRAFT / Goal 5: Reduce risk of disease, environmental hazards, and terrorist acts / Goal 6: Reduce impact of earthquakes / Goal 7: Reduce impact of countywide weather hazards such as drought and winter weather / Goal 8: Minimize impact of aircraft incidents / Goal 9: Continue to emphasize preparedness, response, and recovery activities in all types of emergency management planning. Associated with each of the goals are objectives and mitigation actions ranging from adopting building codes to burying electric infrastructure to community education. The mitigation projects are prioritized based on cost, staff time, feasibility, population benefit, property benefit, values benefit, project maintenance, and the probability and impact of the hazards being mitigated. An implementation plan outlines the suggested course of action, given the limited resources available to Beaverhead County and the jurisdictions. The Beaverhead County Local Emergency Planning Committee is responsible for the implementation and maintenance of the plan. Other recommended activities, such as integrating this plan into a variety of county, city, and town plans, regulations, and documents, will further the goals of hazard mitigation in Beaverhead County. 2017 The Beaverhead County Pre-Disaster Mitigation Plan exceeds the requirements of a local hazard mitigation plan as outlined in the Interim Final Rule published in the Federal Register on February 26, 2002, at Title 44 of the Code of Federal Regulations, Part 201 as part of the Disaster Mitigation Act of 2000. This plan has been approved by the Federal Emergency Management Agency as a hazard mitigation plan, and therefore, the county, city, and town may be eligible for federal mitigation funds. This plan serves as a guide for understanding the major hazards facing Beaverhead County and the jurisdictions and provides a strategy for preventing or reducing some of the impacts. April Draft ii RSI-xxxX DRAFT TABLE OF CONTENTS 1.0 HEADING 1: TYPE TEXT IN ALL CAPS ......................................................................................................................................................................................... ERRO R! BOOKMARK NOT DEFINED. 1.1 Heading 2: Type Text in Initial Caps .................................................................................................................................................Error! Bookmark not defined. 1.1.1 Heading 3: Type Text in Initial Caps ..................................................................................................................................Error! Bookmark not defined. 1.1.2 Heading 3: Type Text in Initial Caps ...................................................................................................................................Error! Bookmark not defined. 2.0 DECLINE STABILITY EVALUATION ............................................................................................................................................................................ ERRO R! BOOKMARK NOT DEFINED. 3.0 INTRODUCTION AND PROJECT TIMELINE ..................................................................................................................................................................................2017 ERRO R! BOOKMARK NOT DEFINED. 3.1 Numerical Modeling ..............................................................................................................................................................................Error! Bookmark not defined. 3.1.1 Simulation of Previous Ground Falls ..................................................................................................................................Error! Bookmark not defined. 3.1.2 Modeling of Existing and Proposed Designs ...................................................................................................................Error! Bookmark not defined. April 4.0 REFERENCES .................................................................................................................................................................... ERRO R! BOOKMARK NOT DEFINED. APPENDIX A. PRE- AND POSTTEST PHOTOGRAPHS OF CONSTANT MEAN STRESS IN COMPRESSION .......................... A- ERROR! BOOKMARK NOT DEFINED. Draft iii RSI-xxxX DRAFT LIST OF TABLES Table Page 1. Test Table for Table Style ...................................................................................................................................................................................... Error! Bookmark not defined. 3-2. Caption: Bold Aktive Grotesk CD Light, 12 above/4 below, single space, left justify. Tables are centered within the margins. Captions are centered above the table, slight space between edge of table and edge of caption. ......................... Error! Bookmark not defined. Table 3-3. Red ......................................................................................................................................................... separator line weight is ½ point; gray lines are ¼ pt Gray 80%, Text 2, Lighter 80% 239-62-50) .......................................... Error! Bookmark not defined. Table 3-4. Summary of Finished Specimens From SB004 ............................................................................................................................... Error! Bookmark not defined. 2017 April Draft iv RSI-xxxX DRAFT LIST OF FIGURES FIGURE Page 3-1. Caption: Figure x-x. is bold. Aktive Grotesk CD Light, AG Light 9.5 pt. Figures and figure captions are left aligned. Multiple line captions wrap as shown in this example.0 above/0 below, single space, left justify. ............................................ Error! Bookmark not defined. 3-2. Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Maecenas porttitor congue massa. Fusce posuere, magna sed pulvinar ultricies, purus lectus malesuada libero, sit amet commodo magna eros quis urna. .............................. Error! Bookmark not defined. 3-3. Elevation Survey Locations at the Barbers Hill Salt Dome Elevation Survey Locations at the Barbers Hill Salt Dome Elevation Survey Locations at the Barbers Hill Salt Dome Elevation Survey Locations at the Barbers Hill Salt Dome ......... Error! Bookmark not defined. 2017 April Draft v RSI-xxxX DRAFT 1.0 INTRODUCTION 1.1 PURPOSE Beaverhead County, the City of Dillon, and the Town of Lima recognize the hazards, both natural and human-caused, that threaten their communities. Rather than wait until disaster strikes, the jurisdictions can take proactive measures to prevent losses and lessen the impact from these hazards.
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