2018 UPDATE to MULTI-HAZARD MITIGATION PLAN for Lincoln
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2018 UPDATE TO MULTI-HAZARD MITIGATION PLAN FOR Lincoln COUNTY, MONTANA AND CITIES OF Libby & TROY TOWN OF EUREKA Prepared for: Lincoln County Emergency Management Agency 512 California Ave. Libby, Montana 59923 Prepared by: Tetra Tech Inc. 825 W. Custer Ave. Helena, Montana 59602 (406) 443-5210 December 2018 Table of Contents TABLE OF CONTENTS 1.0 INTRODUCTION 1-1 1.1 BACKGROUND 1-1 1.2 AUTHORITY 1-1 1.3 ACKNOWLEDGEMENTS ............................................................................................................................ 1-2 1.4 SCOPE AND PLAN ORGANIZATION 1-2 2.0 PLANNING PROCESS ......................................................................................2 -1 2.1 MHMP PLANNING TEAM .......................................................................................................................... 2-1 2.2 PROJECT STAKEHOLDERS ....................................................................................................................... 2-2 2.3 REVIEW OF EXISTING PLANS AND STUDIES ................................................................................... 2-3 2.4 PROJECT WEBSITE ...................................................................................................................................... 2-4 2.5 PROJECT MEETINGS ................................................................................................................................... 2-4 2.6 PLAN REVIEW ............................................................................................................................................... 2-6 3.0 COMMUNITY PROFILE ..................................................................................3 -1 3.1 PHYSICAL SETTING .................................................................................................................................... 3-1 3.2 CLIMATE ...................................................................................................................................................... 3-5 3.3 HISTORY ...................................................................................................................................................... 3-6 3.4 CRITICAL FACILITIES AND INFRASTRUCTURE .............................................................................. 3-7 3.4.1 Water and Wastewater Services ......................................................................................................3-8 3.4.2 Utilities .........................................................................................................................................................3-8 3.4.3 Transportation .........................................................................................................................................3-9 3.4.4 Law Enforcement and Emergency Services ............................................................................. 3-10 3.5 POPULATION TRENDS ............................................................................................................................ 3-10 3.6 HOUSING STOCK ........................................................................................................................................ 3-11 3.7 ECONOMY .................................................................................................................................................... 3-12 3.8 LAND USE AND FUTURE DEVELOPMENT ....................................................................................... 3-13 3.8.1 Land Use Implementation Tools.................................................................................................... 3-13 3.8.2 Future Development ........................................................................................................................... 3-16 4.0 RISK ASSESSMENT AND VULNERABILITY ANALYSIS .......................... 4-1 4.1 RISK ASSESSMENT METHODOLOGY ................................................................................................... 4-1 4.1.1 Critical Facilities and Building Stock .......................................................................................... 4-1 4.1.2 Vulnerable Population ....................................................................................................................... 4-6 4.1.3 Hazard Identification ......................................................................................................................... 4-6 4.1.4 Hazard Profiles ...................................................................................................................................... 4-8 4.1.5 Hazard Ranking and Priorities ................................................................................................... 4-10 4.1.6 Assessing Vulnerability - Estimating Potential Losses ..................................................... 4-13 The picture can't be displayed. Multi-Hazard Mitigation Plan – Lincoln County, Montana December 2018 i Table of Contents 4.1.7 Data Limitations ................................................................................................................................ 4-13 TABLE OF CONTENTS 4.2 WILDFIRE .................................................................................................................................................... 4-14 4.3 HAZ-MAT INCIDENTS & TRANSPORTATION ACCIDENTS ...................................................... 4-26 4.4 FLOODING ................................................................................................................................................... 4-40 4.5 DISEASE ................................................................................................................................................... 4-53 4.6 WORKPLACE VIOLENCE/ACTIVE SHOOTER ................................................................................ 4-59 4.7 SEVERE WEATHER ................................................................................................................................... 4-61 4.8 TERRORISM, CIVIL UNREST & CYBER SECURITY ........................................................................ 4-70 4.9 DAM FAILURE ............................................................................................................................................. 4-75 4.10 RISK ASSESSMENT SUMMARY ............................................................................................................. 4-83 5.0 MITIGATION STRATEGY ...............................................................................5 -1 5.1 BACKGROUND AND PAST MITIGATION ACCOMPLISHMENTS ................................................ 5-1 5.2 GENERAL MITIGATION PLANNING APPROACH ............................................................................. 5-5 5.3 MITIGATION GOALS AND OBJECTIVES .............................................................................................. 5-5 5.4 CAPABILITY ASSESSMENT ...................................................................................................................... 5-7 5.4.1 Summary of Programs and Resources Available to Support Mitigation .......................5-7 5.4.2 Administrative and Technical Capabilities ............................................................................ 5-8 5.4.3 Fiscal Capabilities ......................................................................................................................... 5-13 5.5 MITIGATION STRATEGY DEVELOPMENT ....................................................................................... 5-18 5.5.1 Mitigation Strategy Update and Reconciliation ................................................................ 5-18 5.5.2 Mitigation Strategy Benefit/Cost Review and Prioritization ....................................... 5-19 5.5.3 Project Implementation .............................................................................................................. 5-20 6.0 PLAN MAINTENANCE PROCEDURES ......................................................... 6-1 6.1 MONITORING, EVALUATING AND UPDATING THE PLAN ......................................................... 6-1 6.1.1 2011 PDM Plan .........................................................................................................................................6-1 6.1.2 2018 MHMP ...............................................................................................................................................6-1 6.2 MONITORING PROGRESS OF MITIGATION ACTIVITIES ............................................................. 6-2 6.2.1 2011 PDM Plan .........................................................................................................................................6-2 6.2.2 2018 MHMP ...............................................................................................................................................6-2 6.3 IMPLEMENTATION THROUGH EXISTING PROGRAMS ................................................................ 6-3 6.4 CONTINUED PUBLIC INVOLVEMENT ................................................................................................. 6-5 7.0 REFERENCES ....................................................................................................7 -1 The picture can't be displayed. Multi-Hazard Mitigation Plan – Lincoln County, Montana December 2018 ii Table of Contents TABLE OF CONTENTS LIST OF TABLES Table 2.1-1 Agencies Represented on the MHMP Planning Team ..........................................................