Kaeo Bridge Project Assessment of Acoustic Effects New Zealand Transport Agency Reference: 254914 Revision: 4 16 December 2019 Document control record Document prepared by: Aurecon New Zealand Limited Level 4, 139 Carlton Gore Road Newmarket Auckland 1023 PO Box 9762 Newmarket Auckland 1149 New Zealand T +64 9 520 6019 F +64 9 524 7815 E [email protected] W aurecongroup.com A person using Aurecon documents or data accepts the risk of: a) Using the documents or data in electronic form without requesting and checking them for accuracy against the original hard copy version. b) Using the documents or data for any purpose not agreed to in writing by Aurecon. Document control Report title Assessment of Acoustic Effects Document ID Project number 254914 File path Client New Zealand Transport Agency Client contact Jane Price Client reference Rev Date Revision details/status Author Reviewer Verifier Approver (if required) A. Liberona 1 6 December 2017 Draft for client review J. Grimes F. Parr R. Wareing 2 17 July 2019 Draft for Client Review J. Ngo H. Miller - 3 25 September 2019 Draft for Client Review J. Ngo H. Miller - 4 16 December 2019 Minor Amendments J. Ngo H. Miller - Current revision 4 Approval Author signature Approver signature Name J. Ngo Name Title Acoustic Engineer Title Project 254914 File 254914-REP-KB-1.2 Kaeo_Acoustics_v1.4.docx 16 December 2019 Revision 4 Contents 1 Executive Summary.......................................................................................................................... 6 2 Introduction ....................................................................................................................................... 7 2.1 Project Background ............................................................................................................... 7 2.2 Purpose of this Report ........................................................................................................... 8 3 Site Description ................................................................................................................................ 8 3.1 Existing noise environment .................................................................................................... 9 Measurement details ........................................................................................... 9 Long-term noise measurements ....................................................................... 10 Short-term noise measurements ....................................................................... 10 Summary of results ........................................................................................... 11 4 Construction Noise and Vibration ................................................................................................ 12 4.1 Construction noise ............................................................................................................... 12 Criteria ............................................................................................................... 12 Assessment ....................................................................................................... 13 4.2 Construction Vibration ......................................................................................................... 16 Criteria ............................................................................................................... 16 Assessment ....................................................................................................... 16 5 Operational Noise and Vibration ................................................................................................... 19 5.1 Operational noise................................................................................................................. 19 Criteria ............................................................................................................... 19 Protected Premises and Facilities ..................................................................... 19 Assessment ....................................................................................................... 20 5.2 Operational vibration ........................................................................................................... 24 Criteria ............................................................................................................... 24 Assessment ....................................................................................................... 24 6 Recommendations.......................................................................................................................... 26 6.1 Construction noise and vibration ......................................................................................... 26 Management strategy ........................................................................................ 26 Construction Noise and Vibration Management Plan ....................................... 26 General good practice ....................................................................................... 27 Site specific mitigation ....................................................................................... 27 6.2 Operational noise and vibration ........................................................................................... 28 7 Conclusions .................................................................................................................................... 29 7.1 Construction Noise and Vibration ........................................................................................ 29 7.2 Operational Noise ................................................................................................................ 29 Project number 254914 File 254914-REP-KB-1.2 Kaeo_Acoustics_v1.4.docx, 16 December 2019 Revision 4 3 Appendices Appendix A Relevant Standards, Guidelines, and Rules Far North District Plan – Rural Environment Site zoning Construction Noise Construction Vibration Standards and Guidelines NZS 6803:1999 BS5228-1 BS5228-2 DIN4150-3 Appendix B Operational Noise Contours Appendix C Construction Noise Contours Appendix D Construction Vibration Contours Appendix E List of equipment used for noise assessment Figures Figure 1 Proposed works Figure 2 Project location Figure 3 Noise measurement locations Figure 4 MP2 - View from monitoring station towards Kaeo Bridge Figure 5 MP4 – Monitoring location Figure 6 Far North District Plan (Map 21) and proposed road alignment Tables Table 1 Details of long term noise logger Table 2 Details of hand-held sound level meter Table 3 Noise logger measurement results – MP1, 12th to 18th September 2017 Table 4 Short-term noise measurements results, 12th September 2017 Table 5 Construction noise limits for all properties surrounding the Project Table 6 Required stand-off distance to achieve 70 dB LAeq Table 7 Predicted noise levels at PPFs during construction activities relating to the main alignment and bridge works Table 8 List of PPFs exceeding morning and daytime noise criteria for specific construction activities. Table 9 Vibration limits for buildings around the construction site Table 10 Vibration levels at PPFs due to piling or stone column construction activities Table 11 Vibration levels at PPFs due to dynamic compaction Table 12 NZS 6806:2010 noise criteria Table 13 Modelling parameters Project number 254914 File 254914-REP-KB-1.2 Kaeo_Acoustics_v1.4.docx, 16 December 2019 Revision 4 4 Table 14 Road traffic details Table 15 Comparison of measured and predicted (modelled) noise levels Table 16 Noise categories (As specified in NZS 6806:2010 for an altered road) Table 17 Predicted free-field noise levels at PPFs Table 18 Distance between proposed alignments and PPFs Table 19 Hierarchy of controls for the Project Table 20 Construction noise limits for all properties surrounding the Kaeo bridge replacement Table 21 NZS6803-1999 Noise Guidelines for residential receivers (values taken from Table 2 in NZS6803-1999) Table 22 Transient vibration guidelines for cosmetic damage (replicated from Table B.2 from BS 5228- 2:2009) Table 23 Subjective evaluation of vibration (replicated from Table B.1 from BS 5228-2:2009) Table 24 Vibration guidelines for short-term vibration on structures (replicated from Table 1 from DIN4150-3: 1992-02) Table 25 Acoustic Data used in Construction Assessment Table 26 List of construction activities and cumulative noise levels Project number 254914 File 254914-REP-KB-1.2 Kaeo_Acoustics_v1.4.docx, 16 December 2019 Revision 4 5 1 Executive Summary Aurecon has been engaged by the New Zealand Transport Agency (Transport Agency) to provide an assessment of noise and vibration effects for the proposed SH10 Kaeo Bridge Project. This report provides an assessment of both the operational and construction noise and vibration effects of the project. New Zealand Standard 6806:2010 is an industry accepted benchmark for assessment of reasonable effects under Section 16 of the Resource Management Act 1991 (RMA). Therefore, assessment of road traffic noise in accordance with the standard represents the Best Practicable Option (BPO) for assessing operational road traffic noise and has been applied to the Project. Computational noise modelling for the existing and proposed road alignment has been conducted to predict road traffic noise emissions to the surrounding environment. An assessment of the results has been undertaken in accordance with NZS6806:2010.