TTEERRRREEBBOONNNNEE PPAARRIISSHH HHAAZZAARRDD MMIITTIIGGAATTIIOONN PPLLAANN UUPPDDAATTEE 22002200 Final June 16, 2020 Terrebonne Parish Consolidated Government 8026 W. Main Street Houma, Louisiana 70360 985-868-5050 Parish President, Gordon E. Dove Prepared by: Jennifer C. Gerbasi TERREBONNE PARISH, LOUISIANA HAZARD MITIGATION PLAN UPDATE 2020 June 16, 2020 Terrebonne Parish Consolidated Government 8026 W. Main Street Houma, Louisiana 70360 985-868-5050 Parish President, Gordon E. Dove Prepared by: Jennifer C. Gerbasi i Table of Contents 1.0 INTRODUCTION AND PARISH BACKGROUND............................................................................... 1 1.1 Geographic Setting .................................................................................................................. 1 1.2 Land Use ................................................................................................................................. 3 1.3 Population ................................................................................................................................ 7 1.4 Economy .................................................................................................................................. 8 2.0 §201.6 (b) THE PLANNING PROCESS ........................................................................................... 10 2.1 §201.6 (b)(1) An opportunity for the public to comment on the plan during the drafting stage and prior to plan approval ............................................................................................. 10 2.2 §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 nonprofit interests to be involved in the planning process ...................................................... 10 2.3 §201.6 (b)(3) Review and incorporation if appropriate, of existing plans, studies, reports, and technical information .......................................................................................... 11 3.0 §201.6 (c) PLAN CONTENT ............................................................................................................. 15 3.1 §201.6 (c)(1) Documentation of the planning process used to develop the plan including (a) how it was prepared, (b) who was involved in the process, and (c) how the public was involved................................................................................................... 15 3.1.1 How it was prepared… .............................................................................................. 15 3.1.2 Who was involved in the process… .......................................................................... 15 3.1.3 How the public was involved ..................................................................................... 16 3.2 §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. ............................... 37 3.2.1 §201.6 (c)(2)(i) A description of the type, location, and extent of all natural ............. 37 3.2.2 §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. ..................... 43 3.2.3 Risk Assessments ..................................................................................................... 84 3.2.4 §201.6 (c)(2)(ii)(A) The plan should describe vulnerability in terms of the types and numbers of existing and future buildings, infrastructure, and critical facilities locates on the identified hazard areas ......................................................... 86 3.2.5 §201.6 (c)(2)(ii)(B) An estimate of the potential dollar losses to vulnerable structures identified in paragraph (c)(2)(i)(a) of this section and a description of the methodology used to prepare the estimate ..................................................... 89 3.2.6 §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 .................................................................... 99 ii 3.2.7 §201.6 (c)(2)(iii) For multi-jurisdictional plans, the risk assessment section must assess each jurisdiction’s risks where they vary from the risks facing the entire planning area .......................................................................................... 104 4.0 §201.6 (c)(3) HAZARD MITIGATION STRATEGIES ..................................................................... 105 4.1 §201.6 (c)(3)(i) A description of mitigation goals to reduce or avoid long-term vulnerabilities to the identified hazards. ............................................................................... 105 4.2 §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 effects of each hazard, with particular emphasis on new and existing buildings and infrastructure. ............................................................................. 105 4.3 §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.................................................................................................... 114 5.0 §201.6 (c)(4) PLAN MAINTENANCE PROCEDURES .................................................................. 117 5.1 §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. .................................. 117 5.2 §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 ...................................................................... 118 5.3 §201.6 (c)(4)(iii) Discussion on how the community will continue public participation in the plan maintenance process ......................................................................................... 119 5.4 §201.6 (d)(3) Plan review, evaluation, and implementation based on changing conditions, future development, and mitigation efforts……………………………………………………………………….119 6.0 PREREQUISITES—COPY OF FORMAL PLAN ADOPTION ......................................................... 120 6.1 §201.6 (c)(5) Documentation that the plan has been formally adopted by the governing body of the jurisdiction requesting approval of the plan (e.g., City Council, County Commissioner, Tribal Council). For multi-jurisdiction requesting approval of the plan must document that it has been formally adopted. ................................................. 120 LIST OF ATTACHMENTS §201.6 (c) PLAN CONTENT Page No. §201.6 (c)(1)—Documentation c1-1 HMPU Steering Committee with Resolution and Proposed Plan .......... 1 c1-2 HMP Committee Attendance Summary ................................................ 5 c1-3.1A Meeting 1—Advertisement .................................................................... 7 c1-3.1B Meeting 1—Sign-In Sheets ................................................................... 9 c1-3.1C Meeting 1—Summary Meeting Notes ................................................... 17 c1-3.1D Meeting 1—PowerPoint Presentation Slides ......................................... 20 c1-3.2A Meeting 2—Advertisement .................................................................... 67 c1-3.2B Meeting 2—Sign-in Sheets ................................................................... 69 c1-3.2C Meeting 2—Summary Meeting Notes ................................................... 77 c1-3.2D Meeting 2—PowerPoint Presentation Slides ......................................... 80 iii c1-3.3A Meeting 3—Advertisement .................................................................... 155 c1-3.3B Meeting 3—Sign-in Sheets ................................................................... 157 c1-3.3C Meeting 3—Summary Meeting Notes ................................................... 158 c1-3.3D Meeting 3—PowerPoint Presentation Slides ......................................... 160 c1-3.4A Meeting 4—Advertisement .................................................................... 261 c1-3.4B Meeting 4—Sign-in Sheets ................................................................... 263 c1-3.4C Meeting 4—Summary Meeting Notes ................................................... 271 c1-3.4D Meeting 4—PowerPoint Presentation Slides ......................................... 273 c1-3.5A Meeting 5—Advertisement .................................................................... 313 c1-3.5B Meeting 5—Sign-in Sheet ....................................................................