Annex 12 - Code 12 - Declared fish habitat area

  Performance outcomes                                   Acceptable outcomes   Response
                                                                               modification, the extent to which can hardly be
                                                                               accepted.

                                                                               The restoration sites are in areas that are within the
                                                                               modern recruitment, growth and survival envelope for
                                                                               natural rock oysters in the estuary, and supplement
                                                                               hard structure, of suitable design, which rock oyster
                                                                               ecosystems require as their foundation for
                                                                               establishment in the modern estuarine environment.

                                                                               The restoration substrates need to be of a size,
                                                                               configuration, rugosity and heterogeneity, which
                                                                               support a diversity of species. TNC ecologists
                                                                               confirm that these substrates meet these criteria.

                                                                               The substrates must also be stable (not move from
                                                                               site), durable, minimise sediment trapping, maintain
                                                                               natural laminar flow of river currents, avoid erosion of
                                                                               shorelines and maintain fish passage. The engineers
                                                                               certify that substrates as designed and placed on the
                                                                               restoration sites meet these criteria.

                                                                               The drawing show concept models, which are
                                                                               important to set design and construction parameters
                                                                               for how patches of rock (or rock and shell) sit on site
                                                                               and are positioned relative to each other. However,
                                                                               when placed onto specific restoration sites, these
                                                                               modules are flexible in their application. This means,
                                                                               when placed onto each restoration site, a module
State Development Assessment Provisions – version 2.6
State code 12: Development in a fish declared habitat area                                                     Page 6 of 39