Change to Existing Approval - OPW11/0116.01

            Reduced disturbance of
            material more likely to
             contain ASS I PASS



Figure 7: Excavation Profiles. approved and proposed


Impacts on Marine Flora

There has been significant erosion of the end of Noosa River Spit since original design based on 2009 survey. As such, the
nearest mangroves which could be affected are now in a different location compared to the original design. In response, the
wall has been shortened slightly and the wall retum has been relocated to ensure that these mangroves are not impacted.


The relocation of the wall return will result in minor additional impact on marine vegetation (predominantly grasses and
shrubs) [Figure 9].




Figure 8: Grass and small shrubs to be cleared at rock return


Impacts on Marine Fauna

A rock wall provides a different substrate and more complex habitat (with nooks and crannies for fish to hide in) compared
with sand.filled geotextile containers. As such, the combination of the two materials is expected to enhance I support a
greater diversity of marine life compared to sand.filled geotextile containers alone.

The change to rock will substantially reduce the anticipated programme of works and do not require use of a dredger (with
associated vibration and turbidity). As a result, the change to rock will reduce any potential for impacts on fish migration and
spawning.




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