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

Performance outcome                  Acceptable outcome                   Applicant response            Assessment
                                                                          is to be addressed through
                                                                          maintenance if required.
                                                                          The oyster shell is not
                                                                          inherently stable in the
                                                                          design site conditions, but
                                                                          shell stability has been
                                                                          optimised by the use of
                                                                          whole shell, the mixing of
                                                                          shell with the rocky
                                                                          substrate to secure it
                                                                          within the rocky matrix,
                                                                          the placement of loose
                                                                          oyster cultch as a single
                                                                          layer by hands into
                                                                          interstitial voids and the
                                                                          capping of the volume of
                                                                          loose shell placed to
                                                                          10kg/m3. Refer ICM
                                                                          drawing NROR-2021-02
                                                                          Notes 3 & 5 for placement
                                                                          requirements. Where
                                                                          monitoring identifies
                                                                          displaced shell that is more
                                                                          than 5m outside the
                                                                          Restoration Site, it is to be
                                                                          removed in the event that
                                                                          it is resulting in negative
                                                                          impacts. Refer ICM drawing
                                                                          NROR2021-00 Note 4.2 and
                                                                          Project Restoration Plan.
12.2 Prescribed tidal works do not   The design and construction of the   Complies with Performance The applicant has demonstrated
adversely affect the structural      prescribed tidal works is            Outcome 12.2.                 compliance with PO12.2. Given the