2018-10-15 General Committee Agenda

GENERAL COMMITTEE MEETING AGENDA                                            15 OCTOBER 2018


   38.   All vegetated stormwater quality treatment devices must be:
              designed consistent with the Bioretention Technical Design Guidelines (Water
              by Design, 2012); and
              maintained in accordance with the Water by Design (2009) - Maintaining
              Vegetated Stormwater Assets (Version 1). A copy of this document must be
              retained on the site together with the approved Operational Works drawings for
              the stormwater quality treatment system and a detailed life cycle costing of the
              system attached as an addendum. Records of all maintenance activities
              undertaken must be kept and made available to Council upon request.
   39.   Any proprietary stormwater quality treatment devices must be routinely checked,
         serviced and cleaned in accordance with the manufacturer’s recommendations.
         Records of all maintenance activities undertaken must be kept and made available to
         Council upon request. Where replacement cartridges or other necessary components
         for the system become unavailable, an alternative system is required to be retrofitted
         into the development to achieve an equivalent pollutant reduction outcome.
   40.   Any Site Operator Management Strategy must include the Water by Design (2009) –
         Maintaining Vegetated Stormwater Assets (Version 1) document and/or maintenance
         manual for the proprietary device as appropriate and must include the full cost of
         maintaining the system in accordance with that document.
   41.   Where proprietary devices are endorsed as part of the Operational Works Approval, a
         copy of a signed supply agreement between the body corporate/site operator and the
         stormwater filtration system supplier for the maintenance of the proprietary devices
         must be provided to Council prior to the pre-start meeting for the development. The
         supply agreement must be for at least 10 years.
         Acid Sulfate Soils
   42.   All works must be carried out in accordance with an Acid Sulfate Soil and
         Groundwater Management Plan for the development prepared by a qualified person*
         and provided in the application for the Development Permit for Operational Works.
   43.   All waters, including stormwater runoff, groundwater seepage and leachate from acid
         sulfate soils must achieve the following quality prior to release from the site:
              a pH range of 6.5-8.5 pH units;
              50mg/L maximum total suspended solids concentration;
              0.3mg/L maximum total iron concentration;
              0.2mg/L maximum total aluminium concentration;
              no visible plume at either the point of release from the site or within a waterway.
   44.   The basement must be designed and constructed as a water excluding structure in
         accordance with Australian Standard AS3735 “Concrete Structures for Retaining
         Liquids” to ensure groundwater does not enter the basement after construction is
         completed.
   45.   All treated material must undergo verification undertaken by a qualified person* using
         the SPOCAS or Chromium Reducible Sulphur testing suite, and the results must be
         submitted to Council for appraisal.
   46.   The application for Operational Works must demonstrate that continual dewatering of
         groundwater’s will not occur as a result of groundwater movement along any bedding
         material associated with pipes and around the basement of the development.




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