Yemaya Festival 2016 - Predictive Noise Modelling 1 ... · Yemaya Festival 2016 - Predictive Noise Modelling 1 Introduction Renzo Tonin & Associates was engaged to provide predictive

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Vibration

Structural Dynamics

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Renzo Tonin & Associates (VIC) Pty Ltd ABN 30 117 463 297

Suite 218, 87 Gladstone Street SOUTH MELBOURNE VIC 3205

P (03) 9690 6005 [email protected] www.renzotonin.com.au

Yemaya Festival 2016 - Predictive Noise Modelling

1 Introduction

Renzo Tonin & Associates was engaged to provide predictive noise modelling for the Yemaya Festival

2016. This document provides a response to Loddon Shire RFI for permit 13600400 (not issued at time

of writing), proposed Condition 1(a) as follows:

An amended Noise Management Plan, this plan must be prepared in consultation with a qualified acoustic

engineer, be consistent with EPA requirements and must address the following:

i. Identify all dwellings within 5km of the site

ii. Provide an estimation of noise levels at those dwellings within 5km of the site at 9am, 12pm,

10pm and 2am each day/night of the event

iii. Demonstrate that the event can comply with State Environment Protection Policy (Control of

Music Noise from Public Premises) No. N-2 (SEPPN2), including evidence of EPA consent in

accordance with Clause 27(b) f SEPPN2, to the satisfaction of the Responsible Authority and

the EPA

iv. Include contact details of the Site Manager for the purpose of receiving noise related complaints

This document does not address items (i) and (iv) above (to be fulfilled by the event Applicant).

2 Predictive Noise Modelling

2.1 Noise Limits

To determine if and how the festival can comply with the requirements of SEPP N-2, a 3D computational

noise model (CadnaA) has been produced by Renzo Tonin & Associates. The noise model considers two

definitive periods which the festival is proposed to operate:

• ‘Day’ (or within normal operating hours), 12 noon to 10pm in accordance with SEPP N-2 27(a)

7 April 2016

MB965-01F01 Noise Modelling (r0)

UE Industries

Eugene Apter

[email protected]

From: Darren Tardio [[email protected]]

RENZO TONIN & ASSOCIATES 7 APRIL 2016

UE INDUSTRIES

MB965-01F01 NOISE MODELLING (R0) 2 YEMAYA FESTIVAL 2016

PREDICTIVE NOISE MODELLING

• ‘Night’ (or outside of normal operating hours), 10pm to 12 noon in accordance with SEPP N-

2 27(b)

For the purposes of responding to item (ii) in the Council RFI, 12pm and 10pm are considered to be

‘Day’ and 9am and 2am are considered to be ‘Night’ in the context of this assessment.

In accordance with SEPP N-2, the noise limits appropriate for the festival are:

• Not greater than 65dB(A) during the ‘Day’ period, within 10 meters of residential dwellings

• Inaudible during the ‘Night’ period, within 10 meters of residential dwellings

While the Day period sets objective noise limits, it is important to note that the Night period is difficult

to determine in the context of predictive noise modelling. For the purpose of this assessment, a practical

target of 25dB(A) has been assumed to approximate inaudibility (rural areas are typically 25-30dB(A) at

night. It is also important to note that the overarching ‘Beneficial Use’ protected by SEPP N-2 is sleep at

night. In this context, 25dB(A) outside would be expected to be inaudible indoors with windows opened.

2.2 Modelling Parameters

The parameters considered in the modelling are as follows:

• The typical frequency contour of live electronic and dance music, normalised as follows:

31Hz 63Hz 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz

-5 0 -5 -9 -21 -23 -24 -25 -25

• The directivity of loudspeakers for frequencies >100Hz

• The directivity of loudspeakers and subwoofers generating sound <100Hz, assumed to be

omnidirectional at large distances

• Sound propagation in accordance with ISO 9613

• Downwind sound inversion favourable to propagation assumed in all directions (worst-case)

• Ground absorption consistent with open grass fields

• Two (2) stage systems modelled (‘Main’ and ‘Ashaba’) as indicated on the site plan

- Main Stage facing south

- Ashaba Stage facing southwest

Land topography has not been included in the model (not available from Department of Environment,

Land, Water and Planning) and therefore the accuracy is limited to generally flat ground terrain between

the festival and residents. Noise monitoring is still required to be undertaken during the event to verify

noise levels during prevailing weather and land conditions.


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Buildings have been identified using aerial photography. All buildings have been assumed to be

residential to provide a conservative assessment. Where buildings identified in the noise model are

confirmed to be non-residential use, the modelling outcomes are subject to change.

2.3 Reference Levels

The sound system will require calibration at a suitable reference point before and throughout the

festival. For the purposes of this assessment, the front-of-house (FOH) location has been assumed as a

suitable reference location. It is understood that the FOH positions will be approximately 40m from the

front of the respective stages.

The following Table provides the sound levels that would need to be maintained to comply with SEPP N-

2 throughout the festival (subject to any verification testing conducted during the festival). Noise

modelling indicates that the festival can comply with SEPP N-2 under these conditions.

Stage Operating Reference Position Period dB(A) dB(C)

Main FOH at 40m Day 112 121

Night 72 81

Ashaba FOH at 40m Day 109 118

Night 69 78

It is important to note that the levels during Day operations are unlikely to be reached as large music

festival sound systems typically generate approximately 90dB(A) / 100 dB(C) at FOH. The figures in the

above Table only represent upper level limits.

2.4 Noise Contours

Refer to Appendix A for noise contours for the Main Stage during Day operations, under the condition

that FOH at 40m does not exceed 112dB(A) and 121dB(C).

Refer to Appendix B for noise contours for the Ashaba Stage during Day operations, under the condition


Refer to Appendix C for noise contours for the Main Stage during Night operations, under the condition


Refer to Appendix D for noise contours for the Ashaba Stage during Night operations, under the

condition that FOH at 40m does not exceed 69dB(A) and 78dB(C).


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Document control

Date Revision history Non-issued

revision

Issued

revision Prepared Instructed Authorised

07.04.2016 Submitted to Client 0 DT DT

Important Disclaimer:

The work presented in this document was carried out in accordance with the Renzo Tonin & Associates Quality Assurance System, which is

based on Australian Standard / NZS ISO 9001.

This document is issued subject to review and authorisation by the Team Leader noted by the initials printed in the last column above. If no

initials appear, this document shall be considered as preliminary or draft only and no reliance shall be placed upon it other than for

information to be verified later.

This document is prepared for the particular requirements of our Client which are based on a specific brief with limitations as agreed to with

the Client. It is not intended for and should not be relied upon by a third party and no responsibility is undertaken to any third party

without prior consent provided by Renzo Tonin & Associates. The information herein should not be reproduced, presented or reviewed

except in full. Prior to passing on to a third party, the Client is to fully inform the third party of the specific brief and limitations associated

with the commission.

In preparing this report, we have relied upon, and presumed accurate, any information (or confirmation of the absence thereof) provided by

the Client and/or from other sources. Except as otherwise stated in the report, we have not attempted to verify the accuracy or completeness

of any such information. If the information is subsequently determined to be false, inaccurate or incomplete then it is possible that our

observations and conclusions as expressed in this report may change.

We have derived data in this report from information sourced from the Client (if any) and/or available in the public domain at the time or

times outlined in this report. The passage of time, manifestation of latent conditions or impacts of future events may require further

examination and re-evaluation of the data, findings, observations and conclusions expressed in this report.

We have prepared this report in accordance with the usual care and thoroughness of the consulting profession, for the sole purpose

described above and by reference to applicable standards, guidelines, procedures and practices at the date of issue of this report. For the

reasons outlined above, however, no other warranty or guarantee, whether expressed or implied, is made as to the data, observations and

findings expressed in this report, to the extent permitted by law.

The information contained herein is for the purpose of acoustics only. No claims are made and no liability is accepted in respect of design

and construction issues falling outside of the specialist field of acoustics engineering including and not limited to structural integrity, fire

rating, architectural buildability and fit-for-purpose, waterproofing and the like. Supplementary professional advice should be sought in

respect of these issues.


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APPENDIX A Main Stage, 12 noon to 10pm

NW Resident, approx. 1km from stages

SW Resident, approx. 1.8km from stages

Main Stage, facing south

FOH approx. 40m south

E Resident, approx. 1.3km from stages

Ashaba Stage, facing southwest

FOH approx. 40m southwest

SE Resident, approx. 2.4km from stages

Scale: 1: 15345 at A3

Consultants in Acoustics, Vibration & Structural Dynamics

Suite 218/87 Gladstone Street

South Melbourne VIC 3205

P: 03 9690 6005

Legend

Point Source

Receiver

Noise Levels - dB(A)

>= 65.0

>= 70.0

>= 75.0

>= 80.0

>= 85.0

NOTES:

Noise levels are approximate due to interpolation of contours and should be used for reference only.

Modelling in accordance with ISO 9613

Land topography not included in calculations.

Downwind (worst-case) assumed in all directions.

Loudspeaker directivity based on Turbosound data

Frequencies <100Hz (including sub loudspeakers) assumed omni-directional

Spectal power output (EQ) based on typical live electronic music contour

This information is protected by copyright.

YEMAYA FESTIVAL 2016 - MAIN STAGE NOISE MODELLING

12pm TO 10pm MAXIMUM OPERATING LEVELS

Leq dB(A) 15-minute NOISE LEVELS

EPA SEPP N-2 COMPLIANCE

NOISE LEVELS ARE FREE FIELD

FIG No.MB965 REV 0

Option12pm to 10pm

SHEET 1 SIZE A3

07/04/2016


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APPENDIX B Ashaba Stage, 12 noon to 10pm









Scale: 1: 15345 at A3




P: 03 9690 6005

Legend

Point Source

Receiver


>= 65.0

>= 70.0

>= 75.0

>= 80.0

>= 85.0

NOTES:









YEMAYA FESTIVAL 2016 - ASHABA STAGE NOISE MODELLING





FIG No.MB965 REV 0

Option12pm to 10pm

SHEET 2 SIZE A3

07/04/2016


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APPENDIX C Main Stage, 10pm to 12 noon









Scale: 1: 15345 at A3




P: 03 9690 6005

Legend

Point Source

Receiver


>= 25.0

>= 30.0

>= 35.0

>= 40.0

>= 55.0

>= 50.0

>= 55.0

>= 60.0

>= 65.0

>= 70.0

>= 75.0

NOTES:









YEMAYA FESTIVAL 2016 - MAIN STAGE NOISE MODELLING





FIG No.MB965 REV 0

Option10pm to 12pm

SHEET 3 SIZE A3

07/04/2016


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APPENDIX D Ashaba Stage, 10pm to 12 noon









Scale: 1: 15345 at A3




P: 03 9690 6005

Legend

Point Source

Receiver


>= 25.0

>= 30.0

>= 35.0

>= 40.0

>= 55.0

>= 50.0

>= 55.0

>= 60.0

>= 65.0

>= 70.0

>= 75.0

NOTES:









YEMAYA FESTIVAL 2016 - ASHABA STAGE NOISE MODELLING





FIG No.MB965 REV 0

Option10pm to 12pm

SHEET 4 SIZE A3

07/04/2016

Documents

Yemaya Festival 2016 - Predictive Noise Modelling 1 ... · Yemaya Festival 2016 - Predictive Noise Modelling 1 Introduction Renzo Tonin & Associates was engaged to provide predictive