Approvals Application Supporting Material · MCU26/0084

                                                               Noosa Harbour & Las Rias Foreshore Management Works
                                                                OFFICIAL



Beach nourishment will be undertaken to completely bury the revetment wall and partially bury the
groynes. This will slope gently from the crest level of the revetment towards the beach, reaching a 1:3
batter. Based on current beach profile, this will require approximately 5,000m3 of sand, of which 1830m3
will be placed above MHWS.

Full design detail is provided in Annex A in the Basis of Design and in the accompanying design pack.
A summary of all sand volume requirements is noted in Table 2.1.

Details on the construction methodology and sand sourcing is provided in Section 2.3.3.

Table 2.1 Sand sourcing volumes
Work component               Total volume required       Volume placed above   Volume placed below   Indicative tonnage (t)*
                             (m3)                        MHWS (m3)             MHWS (m3)
Geosynthetic sand            100                         0                     100                   180
mattresses (3 units)
Geotextile containers        300                         7.5                   292.5                 540
(109 units)
Beach nourishment            5000                        1830                  3170                  9000

*Conversion of 13 to 2.04t based on Aquac-Calc for wet sand.


2.3 Construction Methodology

2.3.1 Overview
It is anticipated that all works would be undertaken by a single Principal Contractor, noting that aspects
of the development may need specialist subcontractors (e.g. dredging contractor, marine contractor).
The works would be undertaken with the following general sequence:

•    Mobilisation to site, including establishment of laydown areas
•    Reprofiling to prepare the site
•    Reconstruction of deteriorated segments of the revetment wall
•    Dredging and delivery of sand to fill geotextile containers in groyne configuration
•    Dredging and delivery of sand to bury revetment wall and groynes, including reprofiling works
•    Demobilisation.
Details of key components of construction are noted below. Note that the specific methodology may
change depending on the Contractor appointed and would be confirmed through a Marine Execution
Plan and Construction Management Plan.

Construction works are expected to take a period of 16 weeks and would require the temporary closure                           Commented [JV2]: @Daniel Wishaw /@Verity Taylor -
of this area during this time. While the foreshore is open to the public, due to its current eroded state,                     please include the expected construction time
there is limited existing access and therefore disruption to public access would be limited.

2.3.2 Revetment Wall Works
While there is capacity for small excavators and similar plant to access the beachfront for construction
works, access is not appropriate for trucks delivering rock and other material for construction.
Additionally, there are no appropriate areas along the foreshore for the stockpiling of rock and material
for construction. Therefore, it is intended that rock and geotextile material required for the revetment
wall repairs would be delivered by road to temporary stockpiling areas located at the nearby Quamby
Park and/or Bicentennial Park, subject to local approvals and site management arrangements to be
agreed with Noosa Shire Council.
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