2021-01-18 GC - Item 3 - Attachment 3 - Cost Benefit Analysis for Coastal Erosion Options

Contents

Executive Summary .................................................................................................................... 3


1. Introduction ............................................................................................................................. 5
       1.1.      Background ........................................................................................................... 5
       1.2.      Approach ............................................................................................................... 5
       1.3.      Structure of this report ........................................................................................... 6


2. Expected coastal erosion impacts and project options ........................................... 7
       2.1.      Coastal erosion impacts ......................................................................................... 7
       2.2.      Project options ....................................................................................................... 8


3. Cost benefit analysis conceptual model ...................................................................... 10
       3.1.      Overview of CBA ..................................................................................................10
       3.2.      Conceptual CBA model .........................................................................................10


4. Description of costs and benefits ................................................................................... 12
       4.1.      Costs ....................................................................................................................12
       4.2.      Benefits ................................................................................................................13


5. Results and findings............................................................................................................ 16
       5.1.      Results .................................................................................................................16
       5.2.      Sensitivities ..........................................................................................................23
       5.3.      Summary ..............................................................................................................24


Appendix A: Physical impact assessment (BMT, 2020) .............................................. 25


Appendix B: Assumptions and data .................................................................................... 26


Appendix C: Sensitivity Analysis .......................................................................................... 30


References .................................................................................................................................... 32




AITHER | Final Report                                                                                                                                1
Noosa Shire Council – Coastal Hazard Adaptation Plan