Response to Information Request - Received on 19/04/2012 · OPW11/0335

  EP-SMP-02: Maintaining the J-Inderground Rainwater Tanks associated with the ornamental
  garden irrigation scheme
  9. Contingency                                                                                                                 When loss of control of the underground rainwater storage tank occurs:

                                                                                                                                 1) Inform site manager, and request maintenance support;
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                                                                                                                                 2) Inspect existing structure for points of failure;
                                                                                ....i;.:~:t                                      3) Redirect onto stable ground (grass surface, swale). This can include
                                                                                                                                 initiating irrigation to lower the tank volume;
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                                                                                                                                 4) Bridge leak if possible;
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                                                                                                                                 5) Implement corrective actions.
  10. Corrective actions                                                                                                         Structural Integrity

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                                                                                                                                 1) Clean contributing catchment area of oil spills, litter, sediment
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                                                                                                                                 2) Clean screen of accumulated detritus if required;
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                                                                                                                                 3) Empty and clean, repair or replace the rainwater tank if required.
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                                                                                                                                 4) Empty and clean, repair or replace the rainwater tank if required.

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                                                                                                                                   vegetated buffer zones
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  EP-SMP-03: Maintaining the                                                                                                                                                                   [{!ifiI
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  1. Objectivesrrargets                                                                                                          To maintain an attractive garden compatible with the adjacent land-use of
                                                                                                                                 the Noosa National Park, while limiting erosion and sediment transport from
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                                                                                                                                 the Essence of Peregian development site.

  2. Management Strategy                                                                                                         Develop a garden landscape landscape with vigorous lawn and garden
                                                                                                                                 growth, planted to prevent soil erosion, slow.the movement of water sheet
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                                                                                .,                                               flow over the garden surface, contribute to depression storage, and avoid
                                                                                                                                 weed infestation of the adjacent national park.

  3. Tasks/Actions                                                                                                               Mowing and pruning
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                              ~!                                I;;      t~M                                                     1) Mow the lawns, with off site disposal or composting of lawn clippings;
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                                                                                                                                 2) Compost is to be isolated from stormwater runoff to underground storage
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                                                                                                                                 tanks;
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                                       ’~~ (i~                                                                                   3) Prune garden plants with off site disposal, mulching, or composting of
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                                                                                                                                 pruned materials; and
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                                                                                                                                 4) Fertilise lawns and gardens appropriately to maintain plant vigour, while
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                                                                                                                                 avoiding leaching of fertiliser nutrients into stormwater. This may require
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                                                                                                                                 managing soil pH to manage nutrient availability to plants.
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                                                                           .                                                     Weeding
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                                                                                                                                 5)Weed lawns and gardens; and
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                                                                                                                                 6)Remove weed species that may pose a risk of entry into the
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                                                                                                                                 neighbouring Noosa National Park. This includes removing terrestrial and
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                                                                                                                                 aquatic weeds from the vegetative buffer strip and heath wetland.
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                                                                                                                                 Irrigation
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                                                                                                                                 7) Inspect the irrigation system for blockages and leaks. Blockages can be
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                                                                                                                                 caused by the ingress of soil or by ant nests.

  4. Periormance                                                                                     .

                                                                                                          f                      1) No bare patches that can erode and contribute sediment to stormwater;
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                                                                                                                                 2) Minimal entry of grass clippings and plant detritus into the Bioretention
                                                                                                                                 Trenches;
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  5. Monitoring                                                                                                                  1) Irrigation: ponded surface water caused by irregular watering or leaks.
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                                                                                                                                 Ants nests in irrigation pipes.
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                                                                                                                                 2) Garden surfaces: bare patches, weeds, soil pH.