2022-05-16 GC Agenda - Item 7 - Attachment 1 - Report from Marine Approval Specialists

Performance outcome                      Acceptable outcome                   Applicant response               Assessment
                                         AS 4678 to the extent
                                         requirements stated in the
                                         Standard apply to
                                         earth-retaining structures;
                                         (d) if a relevant planning scheme
                                         standard is more stringent
                                         than the standard mentioned
                                         in paragraph (a), (b) or
                                         (c)—the relevant planning
                                         scheme standard, to the
                                         extent it is more stringent
                                         than the standard mentioned
                                         in paragraph (a), (b) or (c).
19.3 Prescribed tidal works that are a   (s 5(2) outcome)                     Not applicable.                  The Project is not a revetment or
revetment or seawall are                 The design and construction of the   Not a revetment or               seawall therefore PO19.3 is not
designed and constructed to              revetment or seawall is consistent   seawall.                         applicable.
protect the revetment or seawall         with the following standards—        Despite this, it is noted that
from erosion at the base of the          (a) subject to paragraph (d), a      the rock structure is
revetment or seawall.                    revetment or seawall provides        expected to experience
                                         for a sub-layer or enough            some slumping over time
                                         filter material to prevent           with subsequent top-up in
                                         erosion of the land under the        response to monitoring.
                                         revetment or seawall;                This is to avoid the use of
                                         (b) subject to paragraph (d), the    geotextiles or scour aprons
                                         bottom edge of the base of a         which would restrict access
                                         revetment or seawall will            between individual reef
                                         withstand undermining by             patches for the purposes of
                                         scour;                               monitoring. Refer ICM
                                         (c) subject to paragraph (d),        Drawing NROR-2021-00
                                         AS 2758 to the extent                Note 4.
                                         requirements stated in the
                                         Standard apply to the sizing