Stormwater Management Plan

GOOD SHEPHERD LUTHERAN COLLEGE                                                          ODYSSEY CONSULTING GROUP
Lot 30 on SP170751                                                           Conceptual Stormwater Management Plan
115 Eumundi Noosa Road, Noosaville                                                                 Project No: K4277


6.0 OPERATIONAL PHASE MAINTENANCE REQUIREMENTS
         The proposed stormwater management devices will require maintenance and monitoring to ensure
         that they function as designed. The following section provides an outline of the necessary
         maintenance tasks for the proposed devices.

6.1      Bio-retention Basin Maintenance
         The most intensive period of maintenance is during the plant establishment period (first two years)
         when weed removal and replanting may be required. It is also the time when large loads of
         sediments could impact on plant growth particularly in developing catchments with poor building
         controls.

         Maintenance is primarily concerned with:
              Maintenance of flow to and through the bio-retention basin;
              Maintaining vegetation;
              Preventing undesired overgrowth vegetation from taking over the bio-retention basin;
              Removal of accumulated sediments; and
              Litter and debris removal.

         Vegetation maintenance will include:
              Fertilising plants;
              Removal of noxious plants or weeds; and
              Re-establishment of plants that die.

         Sediments accumulated at the inlets need to be monitored. Depending on the catchment activities
         the deposition of sediment can tend to smother plants and reduce the ponding volume available.
         Should excessive sediment build-up it will impact on the plant health and require removal before it
         reduces the infiltration rate of the filter media. The proposed SQIDs will require regular maintenance
         and monitoring to ensure that they function as designed.




K4277-0002-D                                     14 February 2019                                      Page 14 of 16