Warrawee Substation - Review of Environmental Factors

Warrawee Substation Page 18Operational Noise & Construction Noise & Vibration AssessmentReport No. 11332 Version BScenarioFitout &CommissioningSiteDemobilisationDuration ofWorks215 Days20 DaysSound SoundPower PowerEquipmentLevel, Level,L Aeq L Amax(dBA) (dBA)15 Tonne Excavators (2) 103 110Road Paver 103 108Dump Truck 108 113Skid Steer Loader 107 111Site Dumper (2) 104 111Profiler 107 112Sweeper Water Truck 108 113300 Tonne Crane 106 111Support Vehicles (2) 90 95Low Loader (2) 106 111Eight Wheel Crane Truck 104 109Eight Wheel Crane Truck 104 10950 Tonne Crane 105 110Dump Truck 104 111Site Dumper 104 111Noise predictions have been made based on the possible worst-case impacts taking intoconsideration the most likely scenario for typical construction. This has been made based ondiscussions with the client on most likely construction scenarios and locations of plant. As aworst-case scenario, this assumes that most of the relevant plants would be operating duringmost of the 15-minute assessment period.The following activity L Aeq,15min noise levels have been assumed:Site EstablishmentoNoisiest activity would be from the Franna Crane and the 50 Tonne Crane movingplant into site. Other plant such as the piling rig would be established but won’t beoperational at this stage. L Aeq,15min noise levels for this would be 107dBA.