ECM_16693990_v1_APPROVED Change to Existing Approval 152005 220 01

                                                                                    152005.220.01

Stormwater Drainage
71.      The stormwater discharge from the site shall be designed such that there is no nett
         increase in the rate of discharge as a result of the development for storm events up to
         a 100 year ARI.
72.      Plans detailing the proposed site drainage network including plans and longitudinal
         sections of pipelines, the location of pits, pipe invert and pit surface levels, junction
         details, size and class of pipes, trench conditions and details of surface flow paths
         together with tabulated hydrologic and hydraulic calculations that detail the drainage
         network and the capacities of the various surface flow regimes shall be submitted to
         the Council for Operational Works approval.
          Where flows are in excess of 100 litres/second then a hydraulic grade line analysis
          will be required.
          Where the catchment exceeds 40ha or where the free water surface level is affected
          by backwater, the assessment shall be appropriately modelled.
73.      All site stormwater drainage shall be by means of a gravity system, with appropriate
         energy dissipation measures incorporated at the outlets.
74.      Suitable overland flow path routes shall be provided for stormwater drainage in excess
         of the piped design frequency.
75.      Roof-water drainage pipe adaptors shall be provided within the kerbs to the frontage
         of all allotments that fall towards the street.
76.      All lots that fall away from the street or have no discharge to road reserve or Park
         Reserves shall be provided with private drainage lines (inter-allotment drainage) and
         field inlet pits to the rear of these allotments in accordance with Council’s Engineering
         Design Standards for Private Drainage Systems. If drainage is proposed to the Park
         Reserves, the drainage system shall be designed to ensure adequate scour protection
         is provided to avoid erosion.
77.      Plans detailing the proposed site drainage network for the roads and for the allotments
         (including plans and longitudinal sections) shall be submitted to the Council for
         Operational Works approval.
78.      All stormwater drainage lines including inter-allotment drainage shall be inspected by
         closed circuit television (CCTV) prior to commencement of the approved use.
          CCTV inspection will be carried out by Council's CCTV contractor and arranged by
          Council following satisfactory completion of construction works. The developer will be
          responsible for the full cost of CCTV inspection, including any additional inspection
          necessary following defect identification and rectification. This charge is payable prior
          to the issue of Operational Works approval and will be determined on the unit rate
          basis current at the time of approval.
Stormwater Management Plan (Water Quantity and Water Quality Strategies)
79.      Stormwater Management on the site shall be generally in accordance with the JWP
         titled Noosa Shire Council – Carpenters Lane Industrial Subdivision Stormwater
         Management Plan May 2007, Revision 1, dated 14/09/07.
80.      All industrial uses on any allotment shall have rainwater tanks with a minimum volume
         that complies with the greater of the rainwater tank storage required by the JWP titled
         Noosa Shire Council – Carpenters Lane Industrial Subdivision Stormwater
         Management Plan May 2007, Revision 1, dated 14/09/07, or the Queensland
         Development Code. This requirement shall be included on the Plan of Development.
81.      Stormwater management on the allotments must achieve the detention required by
         the JWP titled Noosa Shire Council – Carpenters Lane Industrial Subdivision




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