MCU10/2083 Information Request Response 37 Gibson Rd Noosaville

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                                                                                                        URBAN




    4.0* 'CONSTRUCTION PHASE WATER C UALITY MANAGEMENT

    4.1   POLLUTANTS

    Typical pollutants generated during the construction phase of the development are shown below (Gold Coast City
    Council, 2005).


                                              Table 7 - Construction Phase Pollutants

                   Pollutant                 Potential Source                                    Priority

                                             Paper, construction packaging, food packaging,
                   Litter                                                                        High
                                             cement bags, off-cuts
                                             Unprotected exposed soils and stockpiles during
                   Sediment                                                                      High
                                             earthworks and building works
                                             Fuel and Oil spills, leaks from construction
                   Hydrocarbons                                                                  High
                                             equipment and temporary carpark areas
                                             Cement Slurry, asphalt primer, solvents, cleaning
                   Toxic Materials                                                               Medium
                                             agents, washwaters (eg. from tile works)

M                  Alkaline substances       Cement slurry and washwaters                        High



    4.2   POTENTIAL IMPACTS

    The addition of coarse / fine sediments and other pollutants to stormwater runoff from the development sites
    may increase nutrient loads of receiving water, potentially resulting in eutrophication. Impacts on the
    surrounding environment will be minimised during the construction phase with measures as outlined in this Site
    Based Storm water Management Plan and Erosion and Sediment Control Plans to be provided at the operational
    works stage.



    4.3   PERFORMANCE OBJECTIVES AND INDICATORS

    The amount of runoff crossing and leaving the site should be kept to a minimum during the construction phase.
    This will restrict soil erosion and mobilisation of sediments and pollutants through and off the site.

    Stormwater runoff at discharge points during the construction phase shall conform to the performance criteria as
    tabulated below (Gold Coast City Council, 2005).




     SITE BASED STORM WATER MANAGEMENT PLAN - Revision E