Stormwater Management Plan

Good Shepherd Lutheran College                                                                    Odyssey Consulting Group
Proposed Unit Development                                                          Conceptual Stormwater Management Plan
Lot 30 on SP170751                                                                                       Project No: K4277
115 EUMUNDI NOOSA ROAD, NOOSAVILLE

        Table 13:      Construction Phase Key Pollutants
          Pollutant                  Sources
          Litter                     Paper, construction packaging, food packaging, cement bags, material off cuts.
          Sediment                   Exposed soils and stockpiles during earthworks and building works.
                                     Fuel and oil spills, leaks from construction equipment and temporary car park
          Hydrocarbons
                                     areas.
                                     Cement slurry, asphalt primer, solvents, cleaning agents, and wash waters (e.g.,
          Toxic Materials
                                     from tile works).
          Acids of Alkaline
                                     Acid sulphate soil, cement slurry and wash waters.
          Substances

5.3.2   Performance Criteria
        The following site discharge pollutant criteria have been adopted for water quality monitoring during
        the construction phase of the development.

        Table 14:      Construction Phase Water Quality Performance Criteria
          Pollutant                  Criteria
          Total Suspended Solids     90th percentile <50mg/L
          pH                         6.5 – 8.5
          Dissolved Oxygen           90th percentile >80% saturation or 6mg/L
          Hydrocarbons               No visible sheen on receiving waters
          Litter                     No visible litter washed from site.
                                     As recommended by Acid Sulphate Soil Management Plan (If
          Cations and Anions
                                     Applicable to Development).

5.3.3   Sediment and Erosion Controls
        Sediment and erosion control devices (S&EC) employed on the site shall be designed and constructed
        in accordance with the IECA, Best Practice Erosion and Sediment Control Guidelines (2008) as shown
        on Odyssey Consulting Group, Sediment and Erosion Control Plan and Details (Ref: K4277/P008/A &
        Ref: K4277/P009/A) included as Appendix G.

        Pre-Construction:
             Stabilised access/exit to the works area;
             Sediment fences to be located along the contour lines downstream of disturbed areas;
             Dust fencing to be installed as required; and
             Educate site personnel to the requirements of Erosion and Sediment Control Plan.

        Initial Construction – Bulk Earthworks:
              Maintain construction access/exit, sediment fencing, dust fences and all other existing
                  controls as required.

        Second Stage Construction:
             Maintain construction access/exit, sediment fencing, dust fences and all other existing
                controls as required;
             Progressively revegetate finished areas where applicable; and
             Drainage structure protection around field inlets and gully pits.

        During construction, all areas of exposed soils allowing dust generation are to be suitably treated.
        Treatments will include mulching the soil and watering. Road accesses are to be regularly cleaned to
        prevent the transmission of soil on vehicle wheels and eliminate any build-up of typical road dirt and
        tyre dusts from delivery vehicles.

        Adequate waste disposal facilities are to be provided and maintained on the site to cater for all waste
        materials such as litter hydrocarbons, toxic materials, acids or alkaline substances.

K4277-0002                                          14 March 2018                                            Page 11 of 16