2017-01-16 General Committee Meeting Notes

RECOMMENDATIONS ONLY – NOT THE FINAL DECISION OF COUNCIL
GENERAL COMMITTEE MEETING                                                    16 JANUARY 2017


        26.   Cut to fill earthworks must not commence until after the Supervising RPEQ has
              certified that all installed erosion and sediment controls required by this approval
              are sized in accordance with conditions of the approval and the written
              acceptance of the certification is provided to the supervising RPEQ by Council
              officers.
        27.   Offsite run-off must be diverted around exposed soils on the site without
              entraining additional sediments. Discharge from measures to divert the offsite
              water must not cause run-off impacts to other properties. Measures installed to
              divert the upstream water must be designed and certified by the supervising
              RPEQ and installed prior to commencement of bulk earthworks.
        28.   Any temporary drainage works to manage stormwater flows during the
              construction phase of development must be designed by the supervising RPEQ
              to provide a 150mm freeboard and convey the following flow capacities without
              resulting in visible scour within flow paths:
              a.    1 in 2 year event where disturbed area open for less than 12 months
              b.    1 in 5 year event where disturbed area open for 12-24 months
              c.    1 in 10-year ARI event where disturbed area open for 24 months
              d.    Minimum 1 in 1 year ARI Hydraulic capacity for temporary culvert crossings
        29.   E&SC measures must be installed and maintained to ensure any waters
              discharged from the site up to and including a 85%ile 5 day rain event (or 46mm
              rainfall event) contain less than 50mg Total Suspended Solids per litre. All
              relevant measures detailed in the International Erosion and Sediment Control
              Book 2008 or Sunshine Coast Manual for Erosion and Sediment Control must be
              installed to minimise the amount of sediment leaving the site in rainfall events
              that exceed 85%ile 5 day or 46mm.
        30.   Peak 1-year ARI event discharge from the construction phase of development
              must be equivalent to the pre-development peak 1-year ARI event discharge.
              Measures included in calculations to achieve management of peak flows must
              be incorporated into the development in a manner that is consistent with the
              Noosa Plan, all conditions of the approval and does not interfere with adjoining
              properties.
        31.   Prior to the completion of the development, all site surfaces must be effectively
              stabilised. For the purpose of this condition, an effectively stabilised surface is
              defined as one that does not, or is not likely to result in visible evidence of soil
              loss caused by sheet, rill or gully erosion or lead to sedimentation, or lead to
              water contamination.
              Water Sensitive Design
        32.   All hardstand areas must drain to a bioretention basin with active filter media area
              sized to be 2.2% of the contributing catchment. Active filter media area is the
              area of the bioretention basin surface that is not covered by any impermeable
              structure such as a sediment forebay, inlet pipe riser, etc.
        33.   Amended drawings must be provided to Council for approval prior to arranging a
              pre-start meeting. The amended stormwater drawings must:
              a.    demonstrate that each catchment on site drains to a bio retention basin
                    sized to 2.2% of the catchment area. The bioretention basins must be
                    constructed in accordance with those drawings.

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