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MMR IAC Hearing

Presentation on behalf of Melbourne

Anglican Trust Corporation

13 September 2016

Ross Leo

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 LAeq,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 LAeq Saturday and Sunday

Evenings, respectively.

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Scenario A – Demolition –70-75 dB LAeq (Normal Hours)

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Scenario B – Shaft Construction –75-80 dB LAeq (Normal Hours)

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Scenario F – Concrete Pour –65-70 dB LAeq (24 Hours)

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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.

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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.

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.

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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).

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