Annex 7 - Engineering Specifications

          within the target depths for oyster growth, maintenance works are not required. Additional
          rock only to be placed on existing oyster reef patches where monitoring indicates that this
          will enhance the habitat (not where existing habitat is established and healthy).
       · Placement of additional oyster cultch (seeded or unseeded) and/or live oysters, onto a
          oyster reef patch is not to exceed 10kg/m2 to maximise interlocking of the cultch or oysters
          with the rock.
       · Removal of displaced rock and or oyster shell, if found more than 5m outside the
          restoration site, as part of monitoring, and if resulting in negative impacts, is required.


5. RESTORATION ZONES, RESTORATION SITES, RESTORATION FOOTPRINTS

  5.1. Restoration Zones have been identified as listed below. For more detailed images of each
       zone, refer drawing NROR-2021-01. The Restoration Zones have been developed based on
       Habitat Suitability parameters and Restoration Suitability parameters as detailed in the
       Project Restoration Plan.
          Zone 1. Main Channel
          Zone 2. Noosa Sound
          Zone 3. Weyba Creek
          Zone 4. Lake Weyba
          Zone 5. Lake Donella
  5.2. Restoration Sites are identified within each Restoration Zone based on mapping of site-
       specific constraints, knowledge of past oyster bed occurrences (where possible) and adoption
       of minimum distances outlined in Table 1.
Table 1: Constraints and minimum distances to determine restoration sites

 Existing Feature or Habitat        Constraint or Minimum               Preferred Proximity to Existing
                                    Required Distance                   Habitat
 Landward extent water depth                    MHWS                                   -
 Seaward extent water depth         1m seaward of selected depth                       -
                                    (1 below MLWS preferred; 2m
                                    below MLWS maximum)
 Rocky reef                                       2m*                            Within 500m
 Extant oyster ecosystem                          2m                             Within 250m
 Historical oyster ecosystem                       -                             Within 250m
                                                                          Restoration on historic sites
                                                                          where known and practical.
 Terrestrial Vegetation                            0m                                  -
 (including mapped MSES)
 Mangroves including                               2m                                   -
 pneumatophores