Attachment 7C - Flora and Fauna Survey Assessment_Noosa Landfill - Revision 3

                                                                                      Native Foresters



        Changes to soil chemistry and water quality associated with increased surface water
         flows may potentially alter the suitability of the heathland / wetland habitats for
         breeding by acid-specialist Wallum frogs, where the mixing of surface flows with
         groundwater has a diluting effect, resulting in higher pH.
        Potential contamination of Wallum frog breeding habitat with surface water/
         stormwater inputs that may carry detergents, disinfectants and as well as particulate
         and dissolved inorganic nutrients, heavy metals and other pollutants associated with
         the operation of the landfill. This would only arise where unexpected, accidental,
         releases as a result of human error or stochastic events occur. Under current license
         requirements, all surface water in contact with waste must be sent to the leachate
         management system.
        Potential deleterious effects of nitrogen enrichment on amphibians and amphibian
         larvae if elevated concentrations (>10mg/L nitrate-nitrogen) are released, including:
             o Lethal effects (e.g. increased larval mortality); and
             o Sub-lethal effects (e.g. reduced size at metamorphosis; increased frequency
                 of abnormalities; increased time to hatching or time to metamorphosis).
             o Aquatic ecosystem eutrophication which increases amphibian disease risk.
        A long term shift in amphibian community composition towards the more
         common/tolerant competitor species (Eastern Sedgefrog, Striped Rocketfrog and
         Beeping Froglet) may occur as a result of changes to soil chemistry/water quality.




Noosa Landfill & Resource Recovery Centre – Fauna and Flora Assessment – Revision 3
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