PA3660-Coastal Hazard Assessment - 4 arakoon

                                           Project related




8               Conclusion
A detailed coastal engineering assessment has been undertaken to assess the vulnerability to erosion of
the beach adjacent to 4-6 Arakoon Crescent, Sunshine Beach, Noosa Shire. The methodology adopted
for this report is based on best practice and is appropriate for risk assessment in relation to the proposed
development and the coastal hazard associated with beach erosion for the section of beach in the vicinity
of 4-6 Arakoon Crescent, Sunshine Beach. We recommend that the EPA width (80m) calculated above be
adopted for the current development assessment.

This assessment has found that the subject property and house is unlikely to be subject to erosion from
the sea during the expected asset lifespan (i.e. 60 years for a residential house) based on an extreme
event described in Table 6-2. It should be noted that the beach is currently in a state of recovery, with the
toe of the frontal dune more landward then usual and when combined with a safety factor of 1.4, the
erosion prone area assessment is conservative. The assessment also found that the proposed
development will not impact on the future coastal management option for this section of Sunshine Beach.

The results from this assessment have determined that a site-specific slope stability assessment to inform
the design of the house foundations is recommended to accommodate the management measures in the
Landslide Risk Management Manual (Australian Geomechanics, 2007). This should be undertaken by a
geotechnical engineer.

Construction of the proposed houses at 4-6 Arakoon Crescent, Sunshine Beach as shown in Appendix A,
with appropriate foundation design, would not adversely impact coastal processes and would not affect
the future coastal management options for this section of Sunshine Beach.




11 April 2024       4-6 ARAKOON CRESCENT, SUNSHINE BEACH             PA3660-RHD-XX-ZZ-RP-Z-0001    43