Stormwater Management Report

10 EROSION & SEDIMENT CONTROL


         Person Responsible     Contractor’s Site Manager

         Operational Policy     To prevent the displacement of sediment and soil across and

                                offsite during storm events

         Performance criteria   No visual indication of erosion on stages under construction,
                                including evidence of rilling (an indicator of sheet erosion).

         Implementation             1. Erosion and sedimentation devices shall be installed prior
                                        to commencement of work in each stage in accordance
         Strategy                       with the approved engineering plans and to the
                                        reasonable satisfaction of the NSC.
                                    2. Temporary erosion measures (eg silt fences) are to be
                                        employed onsite during construction where reasonably
                                        deemed necessary by the NSC from the assessment of
                                        the slope and soil type. Such measures should be in
                                        accordance with the recommendations in the IE Aust.
                                        Qld. Soil and sediment Control Guidelines.
                                    3. Stockpiled soil should be stored/bunded in a manner to
                                        prevent soil being washed offsite (where necessary)
                                    4. Outside the construction area, existing surface water
                                        conditions shall be maintained.
         Monitoring             Carryout visual inspections daily and after rainfall events (>25mm
                                in 24hrs) to ensure that erosion measures are in place and
                                operational to suit the activity being under taken.

         Auditing               Visual inspections to be carried out monthly and after rainfall
                                events to verify that control measures are in place and properly
                                maintained.

         Reporting              Reporting only required if insufficient sediment and erosion
                                measures are identified.

         Identification of          1. Signs of erosion on site
                                    2. Damaged or failed erosion control devices.
         incident or failure        3. Build-up of sediment.

         Corrective Action      Apply remedial measures to improve sediment & erosion
                                measures (ie silt fences, shake down area)




HR DESIGN                                   Reference No: 18-0165B                                   Page 11 of 15