Change to Existing Approval - OPW11/0116.01

 Arborists have advised that the following methodology would be most beneficial and is to be followed as much as
 practicable:
      .    Removal of branches >6" diameter and placement within Noosa Spit and Noosa Woods (above HAT)as fauna
           habitat
      .
           Heavy trimming of remaining trees, stockpiling and mulching. Mulch to be utilised for rehabilitation along access
           track and site perimeter.
      .    Removal of remainder of tree litter unsuitable for mulching for disposal at an appropriate location ashore.



 Removal of trees and mulching to be undertaken by separate, experienced contractors prior to commencement of other
 works.


 An offset programme has been developed to compensate for the loss of habitat as a result of the works and this is provided
 as a separate report.




      6.4 Acid Sulphate


 Sediment testing was undertaken on 4th and 5th January 2011 by Coffey Geotechnics. The sediment is fine-medium grained
 sand w~h low (<5%)fines content.


 While the surface sediments are clean sand suitable for nourishment, acid sulphate soils (both AASS and PASS)were
 identified within some of the deeper areas. Below is the table from the Coffey Report.


 The dredging for interim navigation and excavation for the construction of the submerged closure does not disturb acid
 sulphate soils.

 Dredging / excavation for the wall and training wall / groyne at the end of Noosa River Spit does disturb some acid sulphates
 below RL-4.75m AHD for sand-filled geotextile container placement. As such, all material dredged / excavated from below
 RL-4.5m AHD is to be placed below LAT (i.e. used for filling deeper containers or as backfill adjacent to the toe).


I Rock wall construction will not disturb ASS   or PASS materials.




           Component of Works                                  Depth                         Liming Rates (kg/m3),


                                                   Above RL -4.75 metres AHD                             Nil


                   Wall! Groyne                                                                          8
                                                   Below RL -4.75 metres AHD

                     (S1   -

                               S4)
                                                   Below RL -5.5 metres AHD
                                                                                                         50
                                                            around S4


                                                   Above RL -6.45 metres AHD                             Nfl
            Submerged Closure

                     (S5 87)
                           -




                                                   Below RL -6.45 metres AHD                             50



                     Dredging
                                                   Above RL -3.25 metres AHD                             Nil
                    (S8-814)


     Note.’ No disturbance is expected for the Submerged Closure area below RL -6.45 metres AHO or within the

     Dredging area below RL -3.25 metres AHO.




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