5-7 Church Street, Mudgee · 2017. 11. 15. ·...

$: 5-7 Church Street, Mudgee · 2017. 11. 15. · I:\Jobs\2017\20171338\20171338.1\20171010TAA_R1_Rooftop Bar - Noise Impact Assessment.docx 2 DOCUMENT CONTROL REGISTER Project Number$
SYDNEY A: 9 Sarah St Mascot NSW 2020 T: (02) 8339 8000 F: (02) 8338 8399

SYDNEY MELBOURNE BRISBANE CANBERRA LONDON DUBAI SINGAPORE GREECE

ABN: 11 068 954 343

The information in this document is the property of Acoustic Logic Consultancy Pty Ltd ABN 11 068 954 343 and shall be returned on demand. It is issued on the condition that, except with our written permission, it must not be reproduced, copied or communicated to any other party nor be used for any purpose other than that stated in particular enquiry, order or contract with which it is issued.

I:\Jobs\2017\20171338\20171338.1\20171010TAA_R1_Rooftop Bar - Noise Impact Assessment.docx 1

MANAGING DIRECTORS MATTHEW PALAVIDIS VICTOR FATTORETTO DIRECTORS MATTHEW SHIELDS BEN WHITE

MANAGING DIRECTORS

MATTHEW PALAVIDIS

VICTOR FATTORETTO

GENERAL MANAGER

MATTHEW SHIELDS

5-7 Church Street, Mudgee

Rooftop Bar - Noise Impact Assessment


DOCUMENT CONTROL REGISTER

Project Number 20171338.1

Project Name 5-7 Church Street, Mudgee

Document Title Rooftop Bar - Noise Impact Assessment

Document Reference 20171338.1/1010A/R1/TA

Issue Type Email

Attention To Construction Assignments Pty Ltd Drenka Andjelic

Revision Date Document Reference Prepared By

Checked By

Approved By

0 10/10/2017 20171338.1/1010A/R0/TA TA TA

1 10/10/2017 20171338.1/1010A/R1/TA TA TA


TABLE OF CONTENTS

1 INTRODUCTION 4 2 SITE DESCRIPTION AND PROPOSED NEW WORKS 5 3 NOISE DESCRIPTORS 6 4 NOISE EMISSION CRITERIA 7

4.1 BACKGROUND NOISE LEVELS 7 4.2 NOISE EMISSION CRITERIA 7

5 NOISE EMISSION ASSESSMENT 9 6 RECOMMENDATIONS 10 7 CONCLUSION 11 APPENDIX ONE- UNATTENDED NOISE MONITORING 12


1 INTRODUCTION

Acoustic Logic has been engaged to conduct a review of potential noise emissions from the proposed construction of a new rooftop bar to be located at 5 – 7 Church Street, Mudgee.

This report will:

• Determine noise emission goals for the rooftop bar based on Office of Liquor Gaming and Racing acoustic guidelines and the background noise logging conducted on site.

• Assess the potential noise generation as a result of operations on the rooftop.

• Where necessary, building and management controls will be identified to ensure that operational noise from the new terrace will be compliant with noise emission requirements.


2 SITE DESCRIPTION AND PROPOSED NEW WORKS

The new Hotel is located at 5 – 7 Church Street, Mudgee and involves the renovation and extension of the existing Regent Theatre. The proposed rooftop bar is to be located on the top floor of the development.

The rooftop bar is proposed to be located in the western end of the of the building with access from the common lobby the Level 4 of the Hotel. The rooftop bar has partially enclosed by a roofing structure and is enclosed on all sides by a glass balustrade and the existing façade structure of the Regent Theatre.

The proposed operating hours of the rooftop bar are 7am to midnight seven days a week. There is no live music proposed for the rooftop bar; only amplified background music is proposed.

There nearest noise sensitive properties are the residences to the northeast (33 Short Street).

See aerial photo below showing the site, and the location of the proposed new works and nearest residences.

Figure 1: Site Aerial Photo

Proposed Hotel Site

Proposed Rooftop Bar

Nearest Noise Sensitive Development


3 NOISE DESCRIPTORS

Environmental noise constantly varies. Accordingly, it is not possible to accurately determine prevailing environmental noise conditions by measuring a single, instantaneous noise level.

To accurately determine the environmental noise a 15-20 minute measurement interval is utilised. Over this period, noise levels are monitored on a continuous basis and statistical and integrating techniques are used to determine noise description parameters.

In analysing environmental noise, three-principle measurement parameters are used, namely L10, L90 and Leq.

The L10 and L90 measurement parameters are statistical levels that represent the average maximum and average minimum noise levels respectively, over the measurement intervals.

The L10 parameter is commonly used to measure noise produced by a particular intrusive noise source since it represents the average of the loudest noise levels produced by the source.

Conversely, the L90 level (which is commonly referred to as the background noise level) represents the noise level heard in the quieter periods during a measurement interval. The L90 parameter is used to set the allowable noise level for new, potentially intrusive noise sources since the disturbance caused by the new source will depend on how audible it is above the pre-existing noise environment, particularly during quiet periods, as represented by the L90 level.

The Leq parameter represents the average noise energy during a measurement period. This parameter is derived by integrating the noise levels measured over the 15 minute period. Leq is important in the assessment of traffic noise impact as it closely corresponds with human perception of a changing noise environment; such is the character of environmental noise.

L1 levels represent is the loudest 1% noise event during a measurement period.


4 NOISE EMISSION CRITERIA

4.1 BACKGROUND NOISE LEVELS

Attended and unattended background noise measurements were obtained in order to characterise the existing noise environment.

Unattended measurements were conducted on the rooftop of the existing Regent Theatre and attended measurements were undertaken surrounding the site and at the nearest residential receivers on Short Street.

Equipment for unattended measurements consisted of an Acoustic Research Laboratories Pty Ltd noise logger. The logger was programmed to store 15-minute statistical noise levels throughout the unattended monitoring period. Attended noise measurements were conducted using a CEL 593 precision sound level analyser. The equipment was calibrated at the beginning and the end of the measurement using a Rion NC-73 calibrator; no significant drift was detected. All measurements were taken on A-weighted fast response mode.

Unattended noise levels were recorded during the period of 22 September to 4 October 2017. Attended noise measurements were conducted on 22 September 2017 and again on 4 October 2017. There were no adverse periods of weather during the attended monitoring, and periods of adverse weather have been excluded from the long term unattended monitoring (see Appendix One).

Background noise levels have been determined based on the measurement data recorded by the unattended monitor. This data is attached in Appendix A. A background noise spectrum was obtained with the attended measurements for the purposes of assessment.

As it is proposed that the bar will operate until 12am, the assessment has been conducted based on the late-night background noise period of 10pm to 12am to residential receivers.

4.2 NOISE EMISSION CRITERIA

Noise emission goals have been determined based on the attended and unattended noise monitoring undertaken at the site and Office of Liquor Gaming and Racing (OLGR) acoustic criteria.

OLGR acoustic criteria require that:

• That the L10 noise level emitted from the premises shall not exceed 5dB above the background L90 sound level in any Octave Band Centre Frequency (31.5kHz to 8kHz inclusive) between the hours of 7.00am to 12.00 midnight when assessed at the boundary of the nearest affected residential premises.

• L10 noise level emitted from the premises shall not exceed the background L90 sound level in any Octave Band Centre Frequency (31.5kHz to 8kHz inclusive) after midnight when assessed at the boundary of the nearest affected residential premises.

• After midnight, noise emissions from the Place of Pubic Entertainment are to be inaudible within any habitable rooms in nearby residential properties.

The measured background noise levels and the corresponding noise emission goals (as identified in the original acoustic report) for the site are as follows:


Table 1 – Rating Background Noise Levels

Location Time Period Measured Ambient Noise

Levels dB(A)L90

33 Short Street, Mudgee

10am – 6pm 51

6pm – 10pm 46

10pm – 12 midnight 36

Table 2 - Noise Emission Goals (dB(A)L10)

Time 31.5Hz 63Hz 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz A-wt

10am – 6pm (BG+5)

60 60 56 52 50 53 50 40 32 56

6pm – 10pm (BG+5)

55 55 51 47 45 48 45 35 27 51

10pm – 12midnight

(BG+5) 45 45 41 37 35 38 35 25 17 41


5 NOISE EMISSION ASSESSMENT

Noise from the operation of the new rooftop bar is predicted and assessed against criteria below.

Noise emissions will be predicted based on the following assumptions/information:

• Patron numbers on the new terrace are limited to 100, and the terrace is open no later than 12am.

• The average noise level of a patron on the terrace is 80dB(A)L10, with one in three patrons speaking at any point in time. This is typical of patron noise generation of a relatively small group of people in an area with background music.

• The noise mitigation treatments as detailed in section 6 are adopted.

Based on the above, the noise emission to the nearest residence (the dwellings to the northeast of the site on Short Street) has been predicted.

Table 3 - Noise Emission Assessment to Residences to the North (Up to 12am Assessment)

Time 31.5Hz 63Hz 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz A-wt

Rooftop Bar 29 29 35 33 34 34 27 17 7 37

Permissible Noise Level (41(BG+5))

45 45 41 37 35 38 35 25 17 41

Compliance Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

Provided that the building and management controls outlined in section 6 are adopted, the rooftop bar is capable of meeting OLGR noise emission requirements.


6 RECOMMENDATIONS

In order to ensure compliance with noise emission requirements, the following building and management controls are required:

• Rooftop is to cease operation at 12am.

• Patron numbers or to be limited to 100.

• Only background music is to be reproduced within the venue, and is to generate a noise level of no more than 65dB(A)L10 within the balcony area.

• Noise absorptive lining is required to 80% of the underside of the ceiling over the terrace. This may consist of perforated sheeting or timber battens or similar with acoustic blanket (50mm thick, 24kg/m3 insulation) laid over. Any noise absorptive ceiling system is to have a noise reduction coefficient (NRC) of at least 0.75.

• Balustra4de to the terrace is to be solid glass, minimum 1.5m high. Screen to be minimum 6mm glass or Perspex or material of equivalent surface density.


7 CONCLUSION

This report has identified the primary noise sources which will be generated by the operation of a proposed rooftop bar to be located on level 4 of the hotel proposed for 5-7 Church Street, Mudgee.

Noise emissions have been assessed against typical guidelines imposed by the Office of Liquor, Gaming and Racing.

Noise emissions from the operation of the rooftop bar will comply with noise emission criteria provided that the building and management controls set out in section 6 of this report are adopted.

Please contact us should you have any further queries.

Yours faithfully

Tom Aubusson MAAS


APPENDIX ONE- UNATTENDED NOISE MONITORING

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