ST. MARY PARISH HAZARD MITIGATION PLAN UPDATE 2014 Hazard Mitigation Grant Program No. EMT-2012-PPC-004 July 2014 Final Draft v.1 Coucil Members Lionel “Butch” Metz, District 1 Charles “Butch” Middleton, District 2 David Hanagriff, District 3 Glen Hidalgo, District 4 Ken Singleton, District 5 Logan Fromenthal, District 6 Tim Tregle, District 7 Sterling J. Fryou, Sr., District 8 Albert Foulcard, At-Largee District 9 Steve F. Bierhorst, At-Large District 10, Chariman Kevin Voisin, At-Large District 11, Vice Chairman Submitted to: St. Mary Parish Paul P. Naquin, Jr., Parish President 5th Floor Courthouse Franklin, Louisiana 70538 337.828.4100 Submitted by: LJC Planning and Design, LLC CB&I T. Baker Smith, LLC Table of Contents 1.0 PREREQUISITES – COPY OF FORMAL PLAN ADOPTION ........................................................... 1 1.1 §201.6 (c)(5) Documentation that the plan has been formally adopted by the governing body of the jurisiction requesting approval of the plan (e.g., City Council, County Commisioner, Tribal Council). For multi-jurisdiction requesting approval od the plan must document that it has been formally adopted. ........................................................1 2.0 INTRODUCTION AND PARISH BACKGROUND ............................................................................. 9 2.1 Geographic Setting ............................................................................................................ 9 2.2 Land Use .......................................................................................................................... 11 2.3 Socioeconomic Factors ..................................................................................................... 13 2.4 Economy ........................................................................................................................... 13 3.0 §201.6 (B) THE PLANNING PROCESS......................................................................................... 15 3.1 §201.6 (b)(1) An opportunity for the public to comment on the plan during the drafting stage and prior to plan approval; ...................................................................................... 15 3.2 §201.6 (b)(2) An opportunity for neighboring communities, local and regional agencies involved in hazard mitigation activities, and agencies that have the authority to regulate development, as well as business, academia and other private and non-profit interests to be involved in the planning process ............................................................................. 15 3.3 §201.6(b)(3) Review and incoporation, if appropriate, of existing plans, studies, reports, and technical information ..................................................................................... 15 4.0 §201.6 (C) PLAN CONTENT ........................................................................................................... 17 4.1§201.6 (c)(1) Documentation of the planning process used to develop the plan including (1) how it was prepared, (2) who was involved in the process, and (3) how the public was involved. ..................................................................................................... 17 4.1.1 How it was prepared ...................................................................................................... 17 4.1.2 Who was involved in the process ................................................................................... 17 4.1.3 How the public was involved ......................................................................................... 18 4.2 §201.6 (c)(2) A risk assessment that provides factual basis for activities proposed in the strategy to reduce losses from identified hazards. Local risk assessments must provide sufficient information to enable the jurisdiction to identify and prioritize appropriate mitigation actions to reduce losses from identified hazards ........................... 20 4.2.1 §201.6 (c)(2)(i) A description of the type, location, and extent of all natural hazards that can affect the jurisdiction. The plan shall include information on previous occurrences of hazard events and on the probability of future hazards events ............. 21 4.2.2 §201.6 (c)(2)(ii) A description of the jurisdiction’s vulnerability to the hazards described in paragraph (c)(2)(i) of this section. This description shall include an overall summary of each hazard and its impact on the community. ........................... 26 4.2.2.1 Flooding ...................................................................................................................... 26 4.2.2.2 Hurricane and Tropical Storm Critical Events .............................................................. 28 4.2.2.3 Coastal Erosion ........................................................................................................... 38 4.2.2.4 Levee Failure (includes floodwalls) and Pump Stations .............................................. 40 4.2.2.5 Tornadoes ................................................................................................................... 42 4.2.3 Risk Assessments ......................................................................................................... 47 ii 4.2.4 §201.6 (c)(2)(iii)(A) The plan should describe vulnerability in terms of the types and numbers of existing and future buildings, infrastructure, and critical facilities located on the identified hazard areas; ......................................................................... 49 4.2.5 §201.6 (c)(2)(ii)(B) An estimate of the potential dollar losses to vulnerable structures identifies in paragraph (c)(2)(i)(a) of this section and a description of the methodology used to prepare the estimate; ................................................................. 53 4.2.6 §201.6 (c)(2)(ii)(C) Providing a general description of land uses and development trends within the community so that mitigation options can be considered in future land use decisions ......................................................................................................... 53 4.2.7 §201.6 (c)(2)(iii) For muliti-jurisdictional plans, the risk assessment section must assess each juridiction’s risks where they vary from the risks facing the entire planning area ................................................................................................................ 55 5.0 §201.6 (C)(3) HAZARD MITIGATION STRATEGIES ..................................................................... 62 5.1 §201.6 (c)(3)(i) A description of mitigation goals to reduce or avoid long-term vulnerabilities to the identified hazards ............................................................................. 66 5.2 §201.6 (c)(3)(ii) The mitigation strategy shall include a section that identifies and analyzes a comprehensive range of specific mitigation actions and projects being considered to reduce the eddects of each hazard, with particular emphasis on new and existing buildings and infrastructure .......................................................................... 67 5.3 §201.6 (c)(3)(iii) …shall include an action plan describing how the actions identified in section (c)(3)(ii) will be prioritized, implemented, and administered by the local jurisdiction. Prioritization shall include a special emphasis on the extent to which benefits are maximized according to a cost benefit review of the proposed projects and their associated costs ........................................................................................ 87 5.4 §201.6 (c)(3)(iv) For multi-jurisdictional plans, there must be identifiable action items specific to the jurisdiction requesting FEMA approval or credit of the plan ....................... 89 6.0 §201.6 (c)(4) PLAN MAINTENANCE PROCEDURES .................................................................. 90 6.1 §201.6 (c)(4)(i) A section describing the method and schedule of monitoring, evaluating, and updating the mitigation plan within a five-year cycle ................................ 90 6.2 §201.6 (c)(4)(ii) A process by which local governments incorporate the requirements of the mitigation plan into other planning mechanisms such as comprehensive or capital improvement plans, when appropriate ................................................................ 91 6.3 §201.6 (c)(4)(iii) Discussion on how the community will continue public participation in the plan maintenance process ..................................................................................... 91 Attachments .......................................................................................................................... 1-132 Tribal Addendum ................................................................................................................1-28 iii List of Attachments FORWARD §201.6 (c) PLAN CONTENT Page No. 1.1 §201.6 (c)(1)—Documentation c1-1 St. Mary Parish Hazard Mitigation Plan Update Committee .................. 1 c1-2 HMPU Committee Attendance Summary .............................................. 2 c1-3.1A Meeting 1—Advertisements ................................................................. 4 c1-3.1B Meeting 1—Sign-in Sheets ................................................................... 5 c1-3.1C Meeting 1—Meeting Agenda and Summary Meeting Notes ................. 7 c1-3.1D Meeting 1—PowerPoint Presentation Slides ......................................... 9 c1-3.2A Meeting 2—Advertisement ..................................................................