1. SHANE ELKIN - Noise & Vibration
West Gate Tunnel Project
4/9/2017

2. Key Documents Page 2 Expert Report (dated 2 August 2017):
EES Technical Report H – Surface Noise and Vibration Impact Assessment
EES Technical Report I – Vibration and Regenerated Noise from Tunnel Construction Assessment
Vicroads Traffic Noise Reduction Policy
Vicroads RDN Interpretation and application of Vicroads Traffic Noise Reduction Policy 2005 (superseded version)
Vicroads Traffic Noise Measurement Requirements for Acoustic Consultants
Vic EPA’s Submission on the West Gate Tunnel Project (dated 10 July 2017)
Vic EPA’s Noise Control Guidelines (dated October 2008)
Joint Expert Report (dated 14 August 2017):
Matt Stead’s Expert Report (dated 2 August 2017)
Darren Tardio’s Expert Report (dated 2 August 2017)
Vicroads RDN Interpretation and application of Vicroads Traffic Noise Reduction Policy 2005 (current version)
Project Note No. 1

3. Key Documents Page 3
In Preparation for Giving Evidence at the Hearing:
Dr John Heilig’s Expert Report (dated 1 August 2017)
Evidence-in-Chief presentations – Matt Stead, Darren Tardio, Dr John Heilig
Vicroads Traffic Noise Reduction Policy Review (dated August 2015)
Vicroads Submission to the West Gate Tunnel Project Inquiry and Advisory Committee (dated 25 August 2017)
Douglas Munro’s Expert Advice (dated 11 August 2017)
Project Note Nos. 4, 13, 19, 24, 26, 32, 44, 53, 54, 55 and 61

4. Expert Report – Overview Page 4
Gain an understanding of the Project
Review the criteria, monitoring, modelling, assessment and mitigation contained in the EES to be comfortable there were no “show stoppers”
Review/revise the EPRs to ensure they provide adequate noise and vibration protection for the constituents of Hobsons Bay Council during both construction and operation

5. Expert Report – Key Aspects Page 5
CONSTRUCTION PHASE
Surface construction activities
Tunnelling construction activities
Construction traffic on surrounding road network
OPERATIONAL PHASE
Road traffic noise (project infrastructure)
Road traffic noise on surrounding road network
Mechanical noise (e.g. ventilation system)

6. Expert Report – Review Findings Page 6
Need for a robust Construction Noise and Vibration Management Plan (CNVMP)
Universal agreement amongst experts
Suggested (by Mr Elkin, Mr Stead, Mr Zerbst) revision to EPR NVP3 (based on MMRP EPR NV21) to include many aspects of a robust CNVMP
Disagreement with the definition given for “inaudibility”
Revised definition of “background + 0 dB” (external) agreed amongst experts for the purposes of CNVMP predictions

7. Expert Report – Review Findings Page 7
Noise Monitoring Results
Request the IAC consider a definition of background noise to clarify criteria in EPR NVP4 (as agreed with Mr Stead)
Incomplete data (not material)
Missing Construction Compounds
Lynch St and Melbourne Rd compounds will be captured by CNVMP
Both very close to residences therefore likely to require substantial mitigation/management (subject to actual construction activities)

8. Expert Report – Review Findings Page 8
10 dB Noise Reduction Applied to Construction Noise Predictions for Perimeter Noise Barrier
Acceptable noise reduction however still exceedences hence need for robust CNVMP and independent auditor
Acoustic Sheds
Need to be determined in CNVMP
Preference for it to be stipulated in EPR
Standard practice for tunnel portal construction worksites in Australia

9. Expert Report – Review Findings Page 9
Construction Traffic Routes
Strong recommendation to avoid “local” streets
I still have some concerns over northern section of New St servicing the Southern Portal worksite given Project Note 19 states that there will still be heavy vehicle movements along this street
Incorrect Distances between Worksites and Residences
Will ultimately be addressed via the development and implementation of the CNVMP

10. Expert Report – Review Findings Page 10
Modelled Construction Equipment SWLs
Will ultimately be addressed via the development and implementation of the CNVMP
Tunnelling Regenerated Noise and Vibration
I am in agreement with the findings and mitigation options stated by Dr Heilig

11. Expert Report – Review Findings Page 11
Active and Passive Open Spaces
My opinion (as with Mr Munroe) is that it is reasonable to treat open spaces as noise sensitive during both construction and operation
Comparison of LA10(18hr) and LA10(12hr) parameters
Will be addressed during detailed design and ultimately tested during post-construction compliance monitoring

12. Expert Report – Review Findings Page 12
Minor Exceedences of 63 dBA LA10(18hr)
Item No 13 of the Joint Expert Report recommends EPR NVP 1 include reference to Vicroads RDN for reasonable and practicable requirements
SEPP N1 Background Errors
Will be addressed during detailed design and ultimately tested during post-construction compliance monitoring

13. Expert Report – Review Findings Page 13
Existing Model Verification
Will be addressed during detailed design and ultimately tested during post-construction compliance monitoring
Millers Road
Recommend implementation of Project Note 1 (single truck toll point) – agreement with Mr Stead (Joint Expert Report Item 3(a))
If Project Note 1 is not implemented, my suggestion is to implement mitigation measures (agreement in general from Vicroads)

14. Conclave Report Page 14 MATTERS OF AGREEMENT
ITEM
RECOMMENDATION
EPR STATUS
3 (A)
IAC to consider implementation of PN 1
With the IAC 4
(and 13)
Reference to Vicroads RDN in NVP1 for off-reservation mitigation
Unresolved in V3 6
Building condition surveys be undertaken where there is risk
Resolved in V3 (NVP3)

15. Conclave Report Page 15 MATTERS OF AGREEMENT
ITEM
RECOMMENDATION
EPR STATUS 7
Requirement for real-time monitoring in high risk areas
Resolved in V3 (NVP3) 8
Adoption of greater CNVMP detail contained in MMRP EPR NV21
Unresolved in V3 9
Definition of “background” noise required for CNVMP predictive purposes

16. Conclave Report Page 16 MATTERS OF DISAGREEMENT
ITEM
RECOMMENDATION
COMMENT 1
Deletion of “facing the traffic noise, being those adjacent to or with direct line of sight to the freeway”
I am unclear on what this means and why it is required. I recommend a more simple definition
Agreement from Mr Munro 2
Operational noise mitigation for public open spaces by considering them as noise sensitive
Precedence in other states as well as Victoria for construction noise.
Practice Note 61
Partial agreement from Mr Munro
3 (B)
Consideration of noise mitigation for residences on Millers Rd
Likely adverse noise impacts
Agreement in-general from Vicroads

17. Conclave Report Page 17 MATTERS OF DISAGREEMENT
ITEM
RECOMMENDATION
COMMENT 5
Definition of when and at how many locations operational compliance noise monitoring should be undertaken
Agreement from Mr Monro 10
Recommendation of annual testing of ventilation system
Agreement from Mr Zerbst 11
New EPR for Independent Auditors Reports to be made public
Transparency for community whilst allowing review/interpretation of raw data by professionals
Mr Stead believes this is beyond the scope of this conclave