Warrawee Substation - Review of Environmental Factors

Warrawee Substation Page 19Operational Noise & Construction Noise & Vibration AssessmentReport No. 11332 Version BInitial Excavation & ConstructionoThe plant used for Piling & Retaining Wall Construction; Pit & Slab Construction andConstruction of Bunded Yards & External Pits are similar with the noisiest plantbeing the shotcreting pump with the agitator. L Aeq,15min noise levels for this activitywould be 109dBA.Bulk Earthworks & ExcavationoNoisiest activity from this activity would be from excavation works which wouldinclude two excavators, skid steer loader, dump truck and site dumpers working atthe same time. L Aeq,15min noise levels for this activity would be 113dBA.Superstructure ConstructionoNoisiest activity from this activity would be from the steel cage installation thatwould involve craneage works using a 50 tonne crane, an 8 wheel crane truck withthe delivery truck idling on site. L Aeq,15min noise levels for this activity would be108dBA.Road PavementoNoisiest activity from road pavement works would be from profiling using a profiler(rotor mill). Noise levels for this activity would be 107dBAFitout & CommissioningoPreliminary Earthworks & Internal Fitout• These works involve installation of main plant for the substation and thenoisiest activity would be the 300 Tonne Crane with the delivery truck idlingon site. L Aeq,15min noise levels for this activity would be 106dBAo External Fit Out (Out-Of-Hours Works)• Noisiest activity from this activity would be from 8 wheel crane truck withdelivery truck idling on site. L Aeq,15min noise levels for this activity would be108dBASite DemobilisationoNoisiest activity from this activity would involve craning activity from the eightwheel crane truck and the 50 tonne crane, site dumpers, dump trucks working toremove construction equipment, plant, materials and site offices from site. L Aeq,15minnoise levels for this activity would be 112dBANoise levels were predicted at all the nearest affected receivers to the works. Electrical workshas been assessed for out-of-hours works as well as the certain works that require access tothe work areas closer to the rail line. Due to the need to be within the rail corridor these workscan only be conducted after hours during track possession.