C79
35 Brentwood Ave SSCNMP C79.1 Introduction This Site Specific Construction Noise Management Plan (SSCNMP) is for 35 Brentwood Ave. A SSCNMP is required because construction is predicted to exceed the standards in CRL designation conditions 31. This SSCNMP has been prepared in accordance with CRL designation condition 37 and is Appendix C79 of the Mt Eden Main Works Construction Noise and Vibration Delivery Work Plan (CNV DWP). It is a supplementary document that builds on the CNV DWP, and therefore directly references relevant sections of the CNV DWP to avoid repetition. The objective of this SSCNMP is to detail the best practicable option(s) (BPO) to avoid, remedy or mitigate the identified adverse effects from noise exceedances at 35 Brentwood Ave. This SSCNMP has been prepared for the Link Alliance and forms part of the Construction Environmental Management Plan (CEMP) for the Mt Eden Station Main Works.
C79.2 Engagement Mt Eden Main Works Link Alliance representatives XXX met with building representative XXX on XXX date. The matters discussed included: •
An overview of the project
•
General programme, demolition, blasting, rock breaking and utilities relocation activities
•
Overview of the CNV DWP and this SSCNMP, communications triggers and monitoring
The Seventh Day Adventist Church is a double-level masonry building with openable windows fronting the rail corridor and worksite. CNV DWP Section 7 identifies summarise the potential scale of noise and/or vibration exceedances using the modelling outputs in insert hyperlink to the GIS maps here. The relevant stages are summarised below. Activity specific mitigation and management measures are included in Section 9 of the CNV DWP, and referenced in brackets, rather than repeated. •
Retaining walls (refer piling in Section 9.8)
The estimated sound level difference across the façade with the windows and doors closed is 20 – 25 decibels. The predicted construction noise effects from Table 12.1 in Section 12.1 are predicted to result in XXX noise effects. Physical receiver mitigation, such as temporary relocation of affected receivers, alternative ventilation and façade sound insulation improvements, have been considered, but are not required as part of the BPO for the Mt Eden Station Main Works. XXX agreed that prior communication of timeframes for works with the potential to exceed the relevant noise limits was an acceptable means of managing effects. No further activity specific consultation is necessary over and above regular communication (Section 10).
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| Mt Eden Main Works CNV DWP – Appendix C SSCNVMPs
