Amended Stormwater Plan · MCU18/0019

SC7440 – Goodchap St, Noosa                                                                           6




                    Pollutant                                      Sources

                        Litter                  Paper, construction packaging, food packaging,
                                                           cement bags and off-cuts

                    Sediment                   Unprotected exposed soils and stockpiles during
                                                           earthworks and building

                 Hydrocarbons                Fuel and oil spills, leaks from construction equipment

                Toxic Materials             Cement slurry, solvents, cleaning agents, wash waters

            pH Altering Substances                       Cement slurry, wash waters

                                  Table 3.1 –Typical Construction Phase Pollutants



        The following measures should typically be implemented prior to the commencement of
        construction:

                Education of all site workers in sediment and erosion procedures

                Specified storage areas for construction materials and plant that are bunded to prevent
                any spillages from escaping


During the construction phase of the development, silt fences should be erected downstream of all
disturbed areas. In addition erosion and sediment control devices should be regularly inspected and
maintained following storm events. An Erosion and Sediment Control Plan will be provided as part of the
operational works application.



3.3     Operational Phase
During the operational stage of the development, the following impacts have been identified in relation to
stormwater runoff and water quality of the receiving waterways:
        Gross pollutants which include human derived litter, course sediment and vegetation
        Sediment and suspended solids
        Nutrients such as phosphorous and nitrogen
To target these potential pollutants stormwater quality improvement devices (SQID’s) are proposed to be
incorporated within the design.