MMR IAC Hearing Presentation on behalf of Melbourne Anglican Trust Corporation 13 September 2016 Ross Leo 1
Airborne Construction Noise Conclave agreed that noise limits recommended in ICNG or the COM NVMG should be considered Table 3 of ICNG / Table A2 of TfNSW’s Construction Noise Strategy provides an internal management level of 45 dB L Aeq , 15 minute for places of worship EPA 1254 provides no guidance for acoustically sensitive non- residential receivers Definition of unavoidable work in EPA 1254 Evening services on weekends potentially the most impacted COM action levels 66 and 61 dB L Aeq Saturday and Sunday Evenings, respectively. 2
Scenario A – Demolition – 70-75 dB L Aeq (Normal Hours) 3
Scenario B – Shaft Construction – 75-80 dB L Aeq (Normal Hours) 4
Scenario F – Concrete Pour – 65-70 dB L Aeq (24 Hours) 5
Construction Vibration Building Damage NV6 - DIN 4150 referenced which is considered appropriate St Paul’s Cathedral floor particularly susceptible to vibration and ground subsidence A building damage threshold should be considered Uncertainty regarding prediction accuracy given that propagation is site specific – assessment is based on theoretical estimates which have a significant margin of error. 6
Construction Vibration Building Damage Stained glass windows, the organ and the spire all susceptible to vibration Construction of the Federation Square connection has not been clearly defined in the EES. 7
Building Damage - Recommendations Given the sensitivity and heritage value of St Paul’s, detailed propagation measurements must be made in-situ St Paul’s requires a full geotechnical survey and building damage assessment Ongoing vibration monitoring during construction period at St Paul’s Cathedral recommended. 8
Environmental Performance Requirements Unanimity between all experts in Conclave on most EPR’s Particular concern over NV1 (EPA 1254 should be replaced by ICNG), as no reference to acoustically sensitive non-residential receivers Definition of “Unavoidable” works NV5 to be revised to include places of worship NVB in its current form is incomplete (CNVMP) Vibration propagation measurements essential (refer to conclave comments regarding NV6). 9
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