Enclosure 4 - Schedule 4a

                                                            Design, construction and safety - all prescribed tidal work
 12.1 Prescribed tidal work is designed and          The design and construction of the prescribed tidal work is        a)     The works are consistent with the building and
 constructed in a way to ensure it is structurally   consistent with the following standards—                                  engineering standards for tidal works as far as
 sound, having regard to the following—              (a) subject to paragraph (b), each Australian Standard relevant           possible.
 (a) relevant engineering standards;                 to the design or construction of structures, to the extent                -   To achieve its purpose, it is not desirable for
 (b) the location of the work;                       requirements stated in the Standard apply to the design or                    the works to extend above high tide.
 (c) the purpose for which the work is to be         construction of prescribed tidal work;                                    -   As materials are biodegradable its structural
 used;                                               (b) if a relevant planning scheme standard is more stringent than
                                                                                                                                   capacity over time may vary depending on
 (d) the impact of flooding, tidal influences and    any standard mentioned in paragraph (a)—the relevant planning
                                                                                                                                   the success of oyster recruitment.
 hydrodynamic changes.                               scheme standard, to the extent it is more stringent than the
                                                     standard mentioned in paragraph (a).                               b)     Locations have been selected by the University of
                                                                                                                               Sunshine Coast based on historical oyster areas,
                                                                                                                               high oyster spat recruitment potential, low
                                                                                                                               sedimentation as well as being clear of areas of
                                                                                                                               recreational usage and navigation channels. The
                                                                                                                               design is compatible with the locations, seabed
                                                                                                                               types and water depths.
                                                                                                                          c)   The purpose of the works is to restore natural
                                                                                                                               habitat. This has been taken into consideration in
                                                                                                                               the selection of sites, the design of the units and
                                                                                                                               the selection of biodegradable materials.


                                                                                                                          Design considers the local tidal range, tidal and flood
                                                                                                                          velocities and waves generated from vessels and wind
                                                                                                                          across the available fetch. Stability is based on
                                                                                                                          conservative assumptions; results of physical model
                                                                                                                          testing of anchored units is not yet available.

 12.2 Prescribed tidal work does not adversely       The design and construction of the prescribed tidal work is
 affect the structural integrity of any existing     consistent with the following standards—
 revetment or seawall or another existing            (a) subject to paragraph (b), prescribed tidal work, including any   The proposed works are not in close proximity to any
 structure.                                          shore abutment, piling or other structure connected with the         existing revetments, seawalls or other structures. The
                                                     work—                                                                scale of the proposed works is also relatively low. No
                                                     (i) does not place an additional load on any existing revetment      adverse effects are anticipated.
                                                     or seawall or another existing structure; or
                                                     (ii) can be structurally supported by an existing revetment or
                                                     seawall or another existing structure;
                                                     (b) if a relevant planning scheme standard is more stringent than
                                                     the standard mentioned in paragraph (a)—the relevant planning
                                                     scheme standard, to the extent it is more stringent than the
                                                     standard mentioned in paragraph (a).

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Coastal Protection and Management Regulation 2003 – Schedule 4A – IDAS code for the development of prescribed tidal work