Annex 7 - Engineering Specifications

Annex 3: Engineering specifications and rectifications

A summary of the engineering specifications and substrate rectifications is given below for ease of
reading only. For detailed drawings refer to Annexes. The formatting of this section conforms to that
of the drawings but is inconsistent with that of other sections in this submission.

The specifications and rectifications have been certified by a Registered Professional Engineer of
Queensland (RPEQ).

NOTES FROM DRAWING 00

1. PURPOSE & PERFORMANCE

  1.1. Works are to restore rock oyster ecosystems throughout the Noosa River estuary at sites that
        meet site suitability criteria and positively interact with current human uses.
  1.2. Works may provide some erosion protection; however, they have not been designed
        specifically for this purpose.
  1.3. As the works do not include geotextile underlayer, some settlement is to be expected and has
        been factored into the design.
  1.4. Module layouts have been developed to allow water flows through the structure to reduce
        siltation, however some siltation is to be expected and has been factored into the design.
        Module layouts are to be laid as reef patches and may be curved or shaped to reflect the local
        bathymetry and specific constraints of each restoration site.
  1.5. Inundation and overtopping of the oyster reef patches during higher tides and flood events is
        to be expected.


2. SCOPE OF WORKS

  2.1. Phase I. Deployment of restoration substrates in modular forms at 4 restoration sites.
  2.2. Phase II. (SUBJECT TO SEPARATE APPROVAL) Deployment of restoration substrate at
        additional sites and/or to augment or maintain existing sites throughout the estuary as
        funding allows. Additional sites to be progressively selected from within the identified
        Restoration Zones (refer Note 5).
  2.3. Works may include seeding of substrate with oyster spat and/or live oysters. Oysters to be
        sourced from brood stock within the Noosa River and/or culture stock from oyster gardening
        within the Noosa River.
  2.4. Works may be staged. Individual sites may be staged subject to engineer’s certification.