RFI - Attachment D - Assessment of Environmental values - Callaghan and Toth

Callaghan and Toth Consulting Engineers______________________________________________________
Biodiversity Overlay

     b) the development minimises the total
         footprint within which all activities,
         buildings, structures, driveways and
         other works are contained; and
     c) the development is located in areas of
         low ecological value over other areas,
         to the greatest extent practicable.
     O4 Wetlands are protected from removal                                S4.1 A minimum separation distance of 100m is                                            The works are within 20m of Cooroy Creek which is east
     or degradation and any adverse impacts                                provided between a wetland and any adjacent                                              of the proposed new swale (Swale 2) on Lot 7 SP173771.
     on wetlands are prevented, minimised or                               development or use.
     mitigated by-                                                                                                                                                  The new carpark is no longer porposed in Lot 7 but will be
     a) maintaining adequate separation                                                                                                                             located within Lot 5 on the existing grassed area.
         between the wetland and any adjacent
         development or use;                                                                                                                                        There will be no changes to flows for Cooroy Creek as
     b) minimising any modification of the                                                                                                                          shown in the Flood Study by Hydrology and Water.
         natural characteristics of the wetland,
         including the topography, surface and                                                                                                                      There will be no access into the retained vegetation
         groundwater hydrology, water quality                                                                                                                       following completion of works or changes to the surface
         and flora and fauna species;                                                                                                                               levels in the retained vegetation areas.
     c) preventing any new development
         within wetlands;                                                                                                                                           As a result of the proposed new hardstand areas, the
     d) minimising access to the wetland;                                                                                                                           existing biobasins are to be refurbished with new filter
     e) minimising impacts associated with                                                                                                                          media and outlet pit to ensure they are to current best
         pest insect control and invasion by                                                                                                                        practice design standards and removing nutrients and
         undesirable plant species; and                                                                                                                             pollutant loads prior to stormwater entering Cooroy Creek.
     f) providing for the rehabilitation and
         replanting of degraded wetlands.                                                                                                                           The existing biobasins have been in place for a minimum
                                                                                                                                                                    of 14 years and are not to the current best practice design
                                                                                                                                                                    standards. As such by improving the design and
                                                                                                                                                                    functionality of the biobasins, this will improve the water
                                                                                                                                                                    quality of stormwater runoff into Cooroy Creek, with the
                                                                                                                                                                    overall health of this waterway being improved.
     Riparian Zones                                                                                                                                                 The site falls within the Riparian Buffer Areas on the
     O5 The biodiversity and ecosystem                                     S5.1 No new development occurs on, or partly on,                                         Biodiversity Overlay.
     values of watercourses, drainage lines,                               premises indicated as Riparian Buffer Area on
     wetlands and adjacent riparian zones are                              Biodiversity Overlay Maps OM1.1 to OM9.1, except                                         The proposed works will not require clearing as the new
     protected by –                                                        for-                                                                                     carpark and access road are located within existing clear
     a) avoiding any new development in the                                a) temporary use of the land; or                                                         areas.
        riparian buffer area;                                              b) infrastructure which provides access to a
     b) retaining aquatic and terrestrial habitat                              watercourse for recreational purposes;                                               The Cooroy Creek riparian vegetation has been subject to
        in riparian zones;                                                                                                                                          a long-term revegetation program by Noosa District
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