Volume 2 - Code Responses · 132006.823

                    COLUMN 1                                         COLUMN 2                                               ASSESSMENT
              SPECIFIC OUTCOMES                    PROBABLE SOLUTIONS (if code assessable)
Stormwater run-off
O2                                               S2.1                                                      Complies with probable solution.
Stormwater is diverted around disturbed areas.   Diversion drains or bunds are designed and                Development proposal complies with the
                                                 constructed to drain upstream run-off around the          prescribed solution. The key to the erosion
                                                 disturbed site;                                           protection strategy is the construction of cut-off
                                                 AND                                                       drains within the property but upstream of the
                                                                                                           development site prior to the commencement of
                                                 S2.2                                                      earthworks to divert clean run-off from upstream
                                                 Discharge from the diversion drains do not cause          areas of the site away from the areas disturbed by
                                                 run-off impacts to other properties;                      earthworks. (Refer Bayview Noosa Hydrology and
                                                 OR                                                        Stormwater Management Plan prepared by WBM
                                                                                                           Oceanics Australia).
                                                 S2.3
                                                 Alternative methods, as described in the Institution of   Development proposal complies with the
                                                 Engineers Australia (Queensland Division) Soil Erosion    prescribed solution. Discharge from diversion
                                                 and Sediment Control Guidelines for Queensland            drains is into the drainage line that runs through
                                                 Construction Sites, are used.                             the site. Energy dissipation on the outlets will
                                                                                                           prevent damage within the property and ensure
                                                                                                           no adverse impacts on downstream properties.
                                                                                                           Temporary check dams across overland flow
                                                                                                           paths will be constructed to slow the flow and
                                                                                                           disperse the flow over a wide area as it is
                                                                                                           discharged to the drainage line.

                                                                                                           The drainage line is an established waterway with
                                                                                                           a stable bed and banks and no disturbance to the
                                                                                                           creek is proposed except at drainage outlets.
                                                                                                           Drainage outlets will be reinstated with rock
                                                                                                           mattresses and vegetation to protect disturbed
                                                                                                           areas and to provide energy dissipation so that the
                                                                                                           water velocity on adjacent bed and banks is not
                                                                                                           high enough to affect the stability of the bed and
                                                                                                                                            Volume II: Code Responses

                                                                                                                                            Viridian Noosa Project
                                                                                                                                            Viridian Stage 3

Erosion and Sediment Control Code                                                                                                           11 April 2006       Page 36