appendix f ghd (2018) odour and noise report

Appendix F GHD (2018) Odour and Noise Report

Yumbah Nyamat Works Approval Application October 2018

A d

Yumbah Aquaculture Ltd

Yumbah Aquaculture Planning & Works Approval

Odour & Noise Impact Assessment for Proposed Nyamat Abalone Aquaculture Facility

October 2018

GHD | Report for Yumbah Aquaculture Ltd - Yumbah Aquaculture Planning & Works Approval, 3135653 | i

Glossary

Term Description

AWS Automatic Weather Station

Background Noise

Level

For a day, evening or night period means the arithmetic average of the LA90

levels for each hour of that period for which the commercial, industrial or trade

premises under investigation normally operates. The background level shall

include all noise sources except noise from commercial, industrial or trade

premises which appear to be intrusive at the point where the background level

is measured (Victorian Government, 1989).

dB Unit of measurement for Sound Pressure Level known as a decibel, which is

10 times the logarithm (base 10) of the ratio of a given sound pressure to a

reference pressure; used as a unit of sound.

dB(A) ‘A-weighted’ decibel measurement as specified in Australian Standard AS IEC

61672- 2004 Electroacoustics - Sound level meters or its replacements..

EPA Environment Protection Authority.

GDA94 The Geocentric Datum of Australia is a system of latitudes and longitudes, or

east and north coordinates used to track locations.

LAeq (period Equivalent sound pressure level: the steady sound level that, over a specified

period of time which would produce the same energy equivalence as the

fluctuating sound level actually occurring.

LA1 (period) The sound pressure level that is exceeded for 1% of the measurement period.



LAmax The maximum sound level recorded during the measurement period.

LAmin The minimum sound level recorded during the measurement period.

Lin LIN or linear is a device or circuit with a linear characteristic, meaning that a

signal passing through the circuit is not distorted and/or it excludes a filter.

Mitigation Reduction in severity.

NIRV Noise from Industry in Regional Victoria (NIRV) - recommended maximum

noise levels from commerce, industry and trade premises in regional Victoria -

Publication 1411 October 2011 (Authorised and published by EPA Victoria,

200 Victoria Street, Carlton.)

Pig (pigging) In pipe cleaning system consisting of a firm fitting plug pushed done the pipe

under pressure to scrape the sides of the pipe free of scale, barnacles and

other crustaceans adhering to the pipe.

Some early cleaning "pigs" were made from straw bales wrapped in barbed

wire or leather, both made a squealing noise sounding like a pig, hence the

name.

Source: https://en.wikipedia.org/wiki/Pigging (accessed 20 August 2018)

Project Specific

Criteria

The project specific level is the more stringent of the intrusive and amenity

criteria.

Receiver

(Sensitive Use)

A noise modelling term used to describe a map reference point where noise is

predicted. A sensitive receiver would be a home, work place, church, school or

other place where people spend time at which noise from the development can

be heard. The assessment in this report looks at impacts within 10 m of the

façade of the building as defined in the SEPP-N1.

https://en.wikipedia.org/wiki/Pigging

GHD | Report for Yumbah Aquaculture Ltd - Yumbah Aquaculture Planning & Works Approval, 3135653 | ii

Term Description

SEPP-N1 State Environment Protection Policy (Control of Noise from Commerce,

Industry and Trade) No. N–1 No. S31, 16/5/1989, Gazette 15/6/1989;

- As varied 15/9/1992, No. G37, Gazette 23/9/1992

- As varied 31/10/2001, No. S183, Gazette 31/10/2001

Sound Pressure

Level (SPL)

The Sound Pressure level is the change in air pressure above and below the

average atmospheric pressure (amplitude) caused by a passing pressure

wave; this is then converted to decibels and can be abbreviated as SPL or Lp.

The SPL can be calculated as:

𝑆𝑃𝐿 𝑜𝑟 𝐿𝑝 = 10 𝐿𝑜𝑔10 (𝑃2

𝑃02⁄ ) [𝑑𝐵]

or more simply

𝑆𝑃𝐿 𝑜𝑟 𝐿𝑝 = 20 𝐿𝑜𝑔10 𝑃 + 94 [𝑑𝐵]

Where:

SPL or Lp = Sound Pressure Level

P = Root-mean-square (rms) sound pressure (Pascals or Pa)

P0 = International reference pressure 20 micropascals.

Sound Power Level

(PWL)

This is defined as the average rate at which sound energy is radiated from a

sound source and is measured in watts (W). The Sound Power Level can be

abbreviated as PWL or Lw.

The PWL can be calculated as:

𝑃𝑊𝐿 𝑜𝑟 𝐿𝑤 = 10 𝐿𝑜𝑔10 (𝑊𝑊0

⁄ ) [𝑑𝐵]

or more simply

𝑃𝑊𝐿 𝑜𝑟 𝐿𝑤 = 10 𝐿𝑜𝑔10(𝑊) + 120 [𝑑𝐵]

Where:

PWL or Lw = Sound Power Level

W = acoustic energy of the source given in watts (W)

W0 = International reference sound power of 10-12 Watt (W)

VPP Victoria Planning Provisions

VPS Victoria Planning Scheme

GHD | Report for Yumbah Aquaculture Ltd - Yumbah Aquaculture Planning & Works Approval, 3135653 | iii

Table of contents

Glossary .............................................................................................................................................. i

1. Introduction ............................................................................................................................... 1

1.1 Background ..................................................................................................................... 1

1.2 Purpose of this report ...................................................................................................... 1

1.3 Scope and limitations ...................................................................................................... 3

1.4 Assumptions.................................................................................................................... 3

1.5 Scope of works ................................................................................................................ 4

2. Land zoning .............................................................................................................................. 6

3. Proposed facility ........................................................................................................................ 8

4. Meteorology .............................................................................................................................. 9

4.1 Choice of meteorological dataset ..................................................................................... 9

5. Odour assessment .................................................................................................................. 13

5.1 Victorian planning and odour guidelines......................................................................... 13

5.2 Sensitive receiver locations ........................................................................................... 14

5.3 Potential odour sources ................................................................................................. 15

6. Operational noise assessment................................................................................................. 18

6.1 Existing noise environment ............................................................................................ 18

6.2 Background noise monitoring ........................................................................................ 21

6.3 Applicable noise criteria ................................................................................................. 26

6.4 Environmental noise impact ........................................................................................... 32

7. Construction noise and vibration .............................................................................................. 48

7.1 Noise criteria ................................................................................................................. 48

7.2 Vibration criteria ............................................................................................................ 50

7.3 Modelling of construction noise impact........................................................................... 53

7.4 Noise and vibration impact management ....................................................................... 56

8. Conclusion .............................................................................................................................. 61

8.1 Odour assessment ........................................................................................................ 61

8.2 Operational noise assessment ....................................................................................... 61

8.3 Construction noise assessment ..................................................................................... 62

8.4 Construction vibration assessment ................................................................................ 62

8.5 Required noise mitigation .............................................................................................. 62

8.6 Additional noise mitigation and considerations ............................................................... 62

9. Bibliography ............................................................................................................................ 63

GHD | Report for Yumbah Aquaculture Ltd - Yumbah Aquaculture Planning & Works Approval, 3135653 | iv

Table index

Table 1 Sensitive receivers ........................................................................................................ 18

Table 2 Prescribed assessment periods ..................................................................................... 21

Table 3 Background noise measurement instrumentation ........................................................... 21

Table 4 Summary of unatttended noise monitoring results at Location 1 ..................................... 22

Table 5 Summary of unatttended noise monitoring results at Location 2 ..................................... 23

Table 6 Attended noise measurement equipment details ............................................................ 24

Table 7 Summary of attended background noise measurement results ...................................... 25

Table 8 Applicable criteria .......................................................................................................... 28

Table 9 Derived NIRV noise criteria for the nearest identified receivers dB(A) LAeq ..................... 30

Table 10 Calculated SEPP N-1 zoning levels at the identified sensitive receivers ......................... 31

Table 11 Emergency criteria ........................................................................................................ 32

Table 12 Site equipment at Narrawong site (images taken 28/11/2017) ........................................ 33

Table 13 Measured noise sources at Narrawong facility ............................................................... 35

Table 14 Equipment modelled for Nyamat facility ......................................................................... 37

Table 15 Minimum sound transmission loss through various buildings dB(A) ................................ 39

Table 16 Minimum sound transmission loss for canals dB(A) ....................................................... 40

Table 17 Stack attenuation dB(A) ................................................................................................. 40

Table 18 Predicted sound pressure levels dB(A) at modelled receivers ........................................ 41

Table 19 Construction and demolition guideline levels, EPA Publication 1254 .............................. 49

Table 20 Calculated construction noise limits ............................................................................... 50

Table 21 Construction and demolition recommendations: DIN 4150 ............................................. 51

Table 22 Short term vibration on pipework (peak component level mm/s) ..................................... 52

Table 23 Guidance on effects of vibration levels (BS 5228.2) ....................................................... 52

Table 24 Vibration Dose Values (m/s1.75) above which various degrees of adverse

comment may be expected in residential buildings......................................................... 53

Table 25 Predicted construction noise levels for modelled scenarios, dB(A) ................................. 55

Table 26 Typical attenuations for source to receptor noise control methods.................................. 59

Table 27 Recommended safe working distances for vibration intensive plant................................ 59

Figure index

Figure 1 Site location plan ............................................................................................................. 2

Figure 2 Planning zones ................................................................................................................ 7

Figure 3 Proposed facility layout .................................................................................................... 8

GHD | Report for Yumbah Aquaculture Ltd - Yumbah Aquaculture Planning & Works Approval, 3135653 | v

Figure 4 Annual and seasonal wind roses at Portland NTC Site: 90192 ....................................... 10

Figure 5 Annual and seasonal wind roses at Portland Airport Site: 90171 .................................... 11

Figure 6 Frequency of winds ....................................................................................................... 12

Figure 7 Mortality bin at Narrawong facility .................................................................................. 16

Figure 8 Mortality bin at Narrawong facility, showing the lime and sand cover used ..................... 16

Figure 9 Waterbirds on wastewater treatment pond at Narrawong ............................................... 17

Figure 10 Sensitive receiver locations ........................................................................................... 20

Figure 11 Instrumentation set up for unattended measurements at location 1 ................................ 22

Figure 12 Instrumentation set-up for unattended measurements at location 2 ................................ 22

Figure 13 Damaged cable at Dutton Way logger site ..................................................................... 23

Figure 14 Areas covered by SEPP N-1 and Planning UGB (EPA Victoria, 2011) ........................... 26

Figure 15 Portland major urban area boundary (EPA Victoria, 2011) ............................................. 27

Figure 16 Predicted noise contours for Scenario A – Normal Operations ....................................... 45

Figure 17 Predicted noise contours for Scenario B - Emergency.................................................... 46

Figure 18 Model Overview ............................................................................................................ 47

Figure 19 Comparison of vibration criteria in accordance with different standards .......................... 51

Appendices

Appendix A – Frank Lodge scenic lookout

Appendix B – Dutton Way

Appendix C – Site plans

Appendix D – Typical construction plant and equipment noise levels

Appendix E – Construction noise modelling scenario

Appendix F – Construction noise contours for modelling scenario

Appendix G – Meeting recommended construction noise criteria

Appendix H – Acoustic attenuation data for mitigation of construction noise

GHD | Report for Yumbah Aquaculture Ltd - Yumbah Aquaculture Planning & Works Approval, 3135653 | 1

1. Introduction

1.1 Background

Yumbah Aquaculture Limited (hereafter referred to as ‘Yumbah’) is an abalone farming business

that has farms in Tasmania, South Australia and Victoria. The Victorian farm located in

Narrawong produces 220 tonnes of abalone each year, and has operated for over 18 years.

Yumbah is proposing to establish a new land-based abalone aquaculture farm in Dutton Way,

approximately six kilometres east of Portland in an area called Bolwarra, on Victoria’s south-

west coast.

The location of the proposed site is presented in Figure 1. The farm will be developed on 64

hectares of land currently used for rural residential purposes and zoned Rural Living Zone (RLZ)

under the Glenelg Shire Council (GSC) planning scheme.

The proposed new facility, formerly named Yumbah Nyamat (hereafter referred to as ‘Nyamat’),

will be established with similar infrastructure successfully in operation at Narrawong. Seawater

will be pumped ashore, direct from Portland Bay, to support the abalone farm.

The proposed development will feature:

Abalone farm, hatchery and nursery

Workshop and storage facility

Administration and staff amenities building

Staff car parking

Ancillary solar system

Water reticulation, stormwater and other services

Seawater in-flow and outflow pipelines

Nyamat will be the largest abalone farm of its kind in the southern hemisphere, capable of

producing 1,000 tonnes of abalone each year.

GHD Pty Ltd (GHD) was engaged by Yumbah to conduct an odour and acoustic impact

assessment associated with the proposed Nyamat facility.

This report considers the type and scale of the proposed aquaculture farm within the general

area of the proposed site and surrounding community, assessing the associated EPA odour

buffer requirements and regional Victoria noise requirements with regard to the relevant

guidelines, legislation and policy.

1.2 Purpose of this report

This report is for the purpose of informing a works approval application for the proposed facility

and provides an assessment of the potential odour and associated buffer constraints for odour

and potential noise impacts associated with the construction and operation of the proposed

facility.

180 Lonsdale Street Melbourne VIC 3000 Australia T 61 3 8687 8000 F 61 3 8687 8111 E [email protected] W www.ghd.com

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G:\31\35653\GIS\Maps\Working\Planning\3135653_001_Location_RevB.mxd© 2018. Whilst every care has been taken to prepare this map, GHD (and DATA CUSTODIAN) make no representations or warranties about its accuracy, reliability, completeness or suitability for any particular purpose and cannot a(whether in contract, tort or otherwise) for any expenses, losses, damages and/or costs (including indirect or consequential damage) which are or may be incurred by any party as a result of the map being inaccurate, incomplete or unsuitable in any way and for any reason.

LEGEND0 100 200 300 40050

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Horizontal Datum: GDA 1994Grid: GCS GDA 1994

Yumbah AquacultureYumbah Aquaculture Facility

Figure 1

Job NumberRevision B

31-35653

03 Sep 2018

Site Location Mapo Date

Data Source: Image © 2018 Google, DigitalGlobe dated 2017/01/22 and VicMap, DELWP (2017). Created by:lrsmith

Paper Size A3

CASTERTON

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PENSHURST

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Site Boundary


1.3 Scope and limitations

This report has been prepared by GHD for Yumbah Aquaculture Ltd and may only be used and

relied on by Yumbah Aquaculture Ltd for the purpose agreed between GHD and the Yumbah

Aquaculture Ltd as set out in section 1.2 of this report.

GHD otherwise disclaims responsibility to any person other than Yumbah Aquaculture Ltd

arising in connection with this report. GHD also excludes implied warranties and conditions, to

the extent legally permissible.

The services undertaken by GHD in connection with preparing this report were limited to those

specifically detailed in the report and are subject to the scope limitations set out in the report.

The opinions, conclusions and any recommendations in this report are based on conditions

encountered and information reviewed at the date of preparation of the report. GHD has no

responsibility or obligation to update this report to account for events or changes occurring

subsequent to the date that the report was prepared.

The opinions, conclusions and any recommendations in this report are based on assumptions

made by GHD described in this report (refer section 1.4 of this report). GHD disclaims liability

arising from any of the assumptions being incorrect.

GHD has prepared this report on the basis of information provided by Yumbah Aquaculture Ltd

and others who provided information to GHD (including Government authorities)], which GHD

has not independently verified or checked beyond the agreed scope of work. GHD does not

accept liability in connection with such unverified information, including errors and omissions in

the report which were caused by errors or omissions in that information.

The opinions, conclusions and any recommendations in this report are based on information

obtained from, and testing undertaken at or in connection with, specific sample points. Site

conditions at other parts of the site may be different from the site conditions found at the specific

sample points.

Investigations undertaken in respect of this report are constrained by the particular site

conditions, such as the location of buildings, services, plant and equipment, and vegetation and

topography. As a result, not all relevant site features and conditions may have been identified in

this report.

Site conditions (including the presence of hazardous substances and/or site contamination) may

change after the date of this Report. GHD does not accept responsibility arising from, or in

connection with, any change to the site conditions. GHD is also not responsible for updating this

report if the site conditions change.

1.4 Assumptions

This report is subject to the following general assumptions being accurate at the time of writing

this report:

Site plans/layouts including detailed drawings, elevations and plan views showing site

boundaries and nearby building footprints.

Aerial photographs of the proposed site are accurate and as up-to-date as possible.

Information gathered during the site visit and subsequent phone calls, emails, and online

research was accurate.

Meteorological data from the Bureau of Meteorology Automatic Weather Station (BOM

AWS) located at Portland NTC (Station ID: 90192) and Portland Airport AWS (Station ID

90171) is representative of the wind climate at the proposed facility.


1.5 Scope of works

1.5.1 Odour Assessment

The task sequence for the odour impact assessment was as follows:

Undertake a site visit to investigate potential existing odour sources on-site at the sister site

in Narrawong and understand general odour character and future operational methodology

for discussion in report.

Review any odour complaint history for the Narrawong site.

Assess the local meteorology for the site using the local meteorological stations located at

Portland NTC and Portland Airport AWS.

Review the odour buffer guideline entitled ‘Recommended separation distances for

industrial residual air emissions’ EPA publication 1518 (EPA Victoria, March 2013).

Review of Clause 52.10 of the Victoria Planning Scheme (VPS) (Department of Planning

and Community Development (DPCD), 2010).

Provide discussion on expected odour emissions onsite and place the proposed facility

operation in perspective relative to guidelines.

1.5.2 Construction and operational noise impact assessment

The task sequence for the noise impact assessment was as follows:

Liaise with the Principal Design Consultant and the Project Team and obtain information as

necessary to conduct a preliminary acoustic assessment.

Review the preliminary design and relevant project information (including design drawings

and mechanical equipment selection).

Undertake an initial desktop review to identify key environmental noise catchment areas

and surrounding sensitive receivers from aerial photography.

Undertake a site visit and carry out short term attended noise measurements at nearby

sensitive receiver locations as part of the odour and noise site visit.

Undertake unattended noise measurements for a period of one week at two (2) locations.

Undertake further onsite noise measurements at Yumbah’s existing Narrawong abalone

aquaculture facility to provide input to the existing and proposed future noise model.

Establish Project specific environmental noise criteria for construction of the proposed

abalone aquaculture facility with consideration to the following guidelines:

– EPA Publication 1254, Noise Control Guidelines, 2008

– EPA Publication 480, Environmental Guidelines for major construction sites, Best

Practice Environmental Management, 1996

Establish Project specific environmental noise criteria for operation of the proposed abalone

aquaculture facility with consideration to the following guideline and standard:

– Noise from Industry in Regional Victoria (NIRV): Recommended maximum noise levels

from commerce, industry and trade premises in regional Victoria (EPA publication 1411)

– Australian Standard AS 1055:2018 Acoustics – Description and Measurement of

Environmental Noise


Identify and characterise the likely principal noise sources within the proposed facility

through client input and site measurements. If some items of equipment were unable to be

measured during the site visit then typical equipment noise levels were sourced from past

projects and/or GHD’s internal database.

Undertake noise modelling using Computer Aided Noise Abatement (Cadna-A) software to

predict industrial (operational) noise generated from the Project at the nearest identified

noise receivers. Noise prediction modelling was undertaken for normal operations and an

emergency operations scenario.

Undertake noise modelling to predict construction noise for several construction works

scenarios.

Provision of in-principle noise mitigation recommendations to minimise potential noise

impact at assessed sensitive receivers.

This report does not include the following:

Construction noise and vibration monitoring

Operational vibration monitoring and assessment

Structure-borne noise

Detailed noise mitigation design beyond in-principle recommendations


2. Land zoning

The land on which the proposed abalone aquaculture facility is to be located is zoned Rural

Living (RLZ). To the north and west the Rural Living Zone gives way to Rural Conservation

Zones (RCZ2). Princes Highway separates the northern RCZ2 and the RLZ with a RDZ1 (Road

Zone). To the north-east, a strip of Special Use Zone (SUZ3) exists running up the coast and is

highlighted in the Glenelg Planning Scheme as residential living in an area subject to marine

erosion and inundation. To the south, a small strip of Public Park and Recreation Zone (PPRZ)

exists running down the coast. An extract from the Glenelg Planning Scheme is presented in

Figure 2.

180 L onsda le Street Melbourne V IC 3000 Austra lia T 61 3 8687 8000 F 61 3 8687 8111 E m elm a [email protected] W www.ghd.com

Nepea n Rd

Dutton Wa y

Crowes Rd

Gora e Rd

Moore Dr

Ba rry St

Ocea n St

NicolSt

Henty Hwy

Pum pa St

Ba yview St

Maretim o Service Rd

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Ca m eronSt

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RCZ2

RCZ2

PCRZ RCZ2

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PPRZ

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GLENELG SHIRE

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G:\31\35653\GIS\Ma ps\Working\Pla nning\3135653_ 002_ Z ones_ RevB.m xd© 2018. Whilst every ca re ha s been ta ken to prepa re this m a p, GHD (a nd DATA CU STODIAN) m a ke no representa tions or wa rra nties a bout its a ccura cy, relia bility, com pleteness or suita bility for a ny pa rticula r purpose a nd ca nnot a(whether in contra ct, tort or otherwise) for a ny expenses, losses, da m a ges a nd/or costs (including indirect or consequentia l da m a ge) which a re or m a y be incurred by a ny pa rty a s a result of the m a p being ina ccura te, incom plete or unsuita ble in a ny wa y a nd for a ny rea son.

L EGEND0 100 200 300 40050

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Horizonta l Da tum : GDA 1994Grid: GCS GDA 1994

Yum ba h Aqua cultureYum ba h Aqua culture Fa cility

Figure 2

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Pla nning Z oneso Da te

Da ta Source: Im a ge © 2018 Google, Digita lGlobe da ted 2017/01/22 a nd V icMa p, DEL WP (2017). Crea ted by:lrsm ith

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ZonesPublic Conserva tion & ResourcePublic Pa rk a nd Recrea tion

Rura l Conserva tion 2Roa d – Ca tegory 1Rura l L ivingSpecia l U se 3 - Dutton Wa y


3. Proposed facility

As generally shown in Figure 3, the proposed facility will consist of a number of buildings,

ponds, pumping stations, grow out facilities and associated infrastructure as follows:

An abalone hatchery

An abalone nursery

Feed storage silos 4x

Grow out area, divided into 4x sections totalling 181,655 m2

A live harvest shed

An abalone mortalities and storage facility

Ancillary solar system

Sediment pumps 4x

Emergency pumps 4x

Storm retention dam

Pump house divided into 4x sections, each section with 5 pumps and a backup generator

PIG retrieval station

Workshop

Administration block with toilets, car parking, and other amenities

Figure 3 Proposed facility layout

Source: Yumbah (26 August 2018)


4. Meteorology

Local weather data was assessed to develop wind roses for the proposed aquaculture facility.

Local wind roses for the site where generated from the Portland NTC automatic weather station

(AWS) and the Portland Airport AWS. Meteorological data from these two nearby sites help to

provide an understanding of the local air dispersion characteristics and predominant wind flows.

Odour

During periods of more stable air flow, poor dispersion of industrial residual air emissions

(IRAEs) can occur. At these times the ‘maximum extent of impact’ from odour emissions will be

greatest. Similarly, during periods of less stable air flow, such as during a hot sunny day when

thermal convection currents are in operation, good dispersion of IRAEs is likely to occur

reducing the ‘maximum extent of impact’.

Noise

Further, some meteorological conditions may have an effect on noise propagation and

absorption, for example:

Temperature (frequency dependent)

Temperature inversion – can cause noise to refract ground-ward

Relative humidity – the higher the humidity the lower the noise absorption

Wind – noise is refracted differently downwind and upwind of the source, with the speed of

noise propagation increasing with decreased air pressure (lower density air). Sound

refracts across a wind pressure gradient bending ground-ward downwind and skyward

upwind of the source.

4.1 Choice of meteorological dataset

Ideally, a 12 month dataset recorded at hourly intervals is required to fully characterise annual

average, diurnal and seasonal variations in wind climate. The nearest complete meteorological

dataset is from the BOM AWS (Bureau of Meteorology Automatic Weather Station) located at

Portland NTC (BOM site ID:90192), approximately 5 km to the south of the site, and the

Portland Airport (BOM site ID: 90171), approximately 12 km to the west of the site.

The intervening terrain is primarily flat with no significant elevation changes between the

proposed site and both BOM stations.

Both weather station locations are in coastal locations very similar to the Nyamat site and as

such are considered representative of the coastal weather conditions that are experienced

along Dutton Way.

GHD obtained a 12 month dataset from BOM for the most recent year (2017) from both stations

to analyse the local meteorological characteristics. The recorded wind climate is described by

the wind roses presented in Figure 4 and Figure 5 below and the frequency of winds within each

designated wind class are provided in Figure 6.


Summer Autumn

Winter Spring

Figure 4 Annual and seasonal wind roses at Portland NTC Site: 90192


Summer Autumn

Winter Spring

Figure 5 Annual and seasonal wind roses at Portland Airport Site: 90171


Site 90171 Airport Site 90192 Portland

Figure 6 Frequency of winds

From the wind roses it can be seen the Portland NTC Site: 90192 demonstrates predominantly

west and southwest winds, but also has significant winds from the northwest and south eastern

sectors and little wind originating from the north eastern sector. Seasonally, the summer period

shows a large coastal influence with offshore winds from the southwest and southeast

dominating the wind rose. This fluctuates in autumn as winds transition to predominately north-

westerly winds, becoming mostly westerly by winter.

Light winds below 0.5 m/s, designated as calm periods, make up only 0.2% of the winds

indicating any odours will be readily dispersed due to the lack of calm periods.

The Portland Airport has a similar wind pattern to the NTC site, however the summer period

demonstrates a stronger westerly influence. The airport also lacks any significant frequency of

calm events at only 0.3% of all winds below 0.5 m/s and approximately half the frequency of

light winds (0.5-2 m/s) compared to the NTC site, see Figure 6.


5. Odour assessment

An assessment of potential odour sources associated with the operation of the proposed

aquaculture farm which may impact nearby sensitive receivers was undertaken with

consideration to the local meteorology, production/mortality cycles, sensitive receiver locations

and associated EPA odour buffer requirements.

The following sections provide information sourced from a recent site visit undertaken by GHD

to Yumbah’s existing Narrawong abalone farm (sister site), an assessment of Victoria’s buffer

requirements and guidelines and how they apply to the site and the abalone farm’s operation

relative to any existing odour and the potential for odour from the proposed Yumbah facility.

The site visit to the existing sister abalone farm at Narrowong was undertaken in order to review

that’s sites odour and odour management and make a comparison to the existing site and the

proposed site at Nyamat. From this site visit offsite odours can be inferred through the site

operations and odour experienced onsite.

For the purpose of this report the terms threshold distance, separation distance and buffer

distance are considered the same and are used interchangeably throughout this report.

5.1 Victorian planning and odour guidelines

The following section outlines the legislation and guidelines relevant to odour emissions from

industry.

5.1.1 Victorian planning

The Victoria Planning Provisions (VPP) ‘is a document containing a comprehensive set of

planning provisions for Victoria. It is not a planning scheme and does not apply to any land. It is

a state-wide reference, used as required, to construct planning schemes’ (Department of

Planning and Community Development (DPCD), 2010).

The Victoria Planning Scheme (VPS) consists of maps which show how land is zoned for

planning purposes. These zones reflect the primary character of land, such as residential,

industrial or rural and indicate the type of use which may be appropriate in that zone

(Department of Planning and Community Development (DPCD), 2010).

Clause 52.10 of the VPS outlines the minimum distances a proposed industrial development

must be from land classified as a Residential Zone, Business 5 Zone, Capital City Zone or

Docklands Zone. This distance is termed the threshold distance and is required to be met,

otherwise a planning permit must be sought.

In the case of an aquaculture activity, such as an abalone farm, there is no specific ‘Threshold

Distance’, with the closest activity being either a “Seafood processor” or “Rural industry

handling, processing or packing agricultural produce”; Clause 52.10 of the VPS stipulates a

‘Threshold Distance’ of 500 and 300 metres respectively for each activity. GHD considers the

proposed aquaculture facility to be atypical within the seafood industry as it does not involve the

more odorous activities that may be found at other seafood processing sites and is not strictly a

handling processing or packing facility. As such, GHD is of the opinion that clause 52.10 while

applicable to the situation would not apply in this instance as no defined threshold is stipulated.

Further there is no Residential Zone, Business 5 Zone, Capital City Zone or Docklands Zone

within 1.3 km of the closest boundary of the proposed site.


5.1.2 EPA publication 1518

EPA Publication 1518 - Recommended Separation Distances For Industrial Residual Air

Emissions (March 2013) outlines relevant buffer distances for use in minimising the occurrence

of amenity reducing emissions from industry affecting properties (sensitive land uses) beyond

the boundary of the source premises (EPA Victoria, March 2013).

Sensitive land uses include:

‘any land uses which require a particular focus on protecting the beneficial uses of the air

environment relating to human health and wellbeing, local amenity and aesthetic enjoyment,

for example residential premises, child care centres, pre-schools, primary schools, education

centres or informal outdoor recreation sites’ (EPA Victoria, March 2013).

In the case of seafood processing, EPA Publication 1518 stipulates a ‘Separation Distance’ of

500 metres. Again, GHD consider the proposed aquaculture facility to be atypical within the

seafood industry as it does not involve the more odorous activities that may be found at other

seafood processing sites and as such GHD does not consider this buffer would apply.

5.1.3 Project specific criteria

As discussed above, there are two different amenity threshold/separation distance guidelines

relevant in the context of planning in Victoria, namely:

The Legislated Victoria Planning Scheme (VPS)

EPA recommend buffer distance guidelines (Publication 1518)

The purpose of an amenity buffer is to provide a planning instrument to create a sufficient

separation between sensitive land uses, such as residential land, and industrial premises so

that disamenity is avoided in the event of an upset/malfunction.

The VPS table to clause 52.10 is relevant only where there is a new industrial or warehouse use

proposed on a land parcel. The proposed facility must meet the minimum threshold distance

specified for its specific type of production, use or storage. In the case of the proposed abalone

farm there is no specified threshold distance.

Publication 1518 is relevant where existing industrial emission sources are present in the area

surrounding a proposed development wishing to move within close proximity and as such is not

relevant in this instance. However, Table 1 of EPA publication 1518 states the following in

regard to odour:

“*Note: For food and beverage manufacturing producing less than 200 tonnes of product per

year, no separation distances are specified. For these cases, EPA recommends there is no

visible discharge of dust or emissions of odours offensive to the senses of human beings,

beyond the boundary of the premises”.

5.2 Sensitive receiver locations

The majority of sensitive receivers are situated along the coast to the south and south east of

the proposed facility along Dutton Way. Additional sensitive receivers are located to the north

gaining access to their properties via the Princes Highway. The site and sensitive receiver

locations are presented in Figure 10. As shown in Figure 1 and Table 1 sensitive receivers are

located in close proximity to the proposed site boundary.


5.3 Potential odour sources

5.3.1 Existing odour sources proximate to plant

Existing odour sources in the vicinity of the proposed facility are typical of coastal environments.

Seasonal odours due to changes in algal biomass and biomass die-off are common naturally

occurring event found throughout coastal water bodies, and is expected. This type of odour can

occur where an algal biomass accumulates, dies off and as it decomposes through microbial

action, reduces oxygen at the substrate, causing a build-up of hydrogen sulphide gas (H2S)

which is known for its ‘rotten egg’ like odour.

5.3.2 Potential site odours

It is GHD’s understanding that the proposed Nyamat aquaculture facility will be established with

similar infrastructure to that which is successfully in operation at Yumbah’s Narrawong

aquaculture facility. A site visit was undertaken by GHD on 28 November 2017 to the existing

Narrawong facility to identify possible odour sources that may be present at the proposed

facility.

During the site visit no significant odour was noted on site, however the following minor odour

sources were noted:

Mortalities bins

Waterfowl (bird) droppings at lagoon perimeters

Both odour sources are discussed further below, including how management will be improved at

Nyamat to reduce odours. No discernible odour was noted at the nursery, grow out sheds or

open channels and therefore it is expected that these areas will not be a major odour source at

the Nyamat facility.

5.3.3 Mortalities bin odour

Yumbah Narrawong temporarily store perished abalone onsite in a waste bin or skip as shown

in Figure 7 and Figure 8. The abalone waste is covered with lime and sand every day to reduce

odour from the bin. The bin is emptied for offsite disposal at different time intervals throughout

the year, according to seasonal changes in mortality. Bin changes occur weekly in summer,

monthly in winter and fortnightly during mild conditions. During the site visit, only a very minor

odour was noted at the mortalities bin, which dissipated within 2-3 metres from the bin area.

Generally, mortality is at its highest in an abalone farm during the summer months, which are

also the months of best dispersion as discussed in section 4, thereby reducing impact from this

type of onsite odour source. Conversely, poorest dispersion occurs during the cooler winter

months, however, this is when abalone morality is typically at its lowest.

Mitigation

Odour from mortality management will be greatly improved at the new Nyamat facility with all

mortalities being collected on a daily basis and placed in freezers inside the Abalone Mortalities

and Storage facility. Once freezers are nearly full, abalone mortalities will be transported offsite

for disposal at either the local municipal landfill or a suitable rendering facility.

Management of mortalities in this manner is expected to reduce odour to the point where it is

expected to be an insignificant onsite odour source and not noticeable beyond the property

boundary.


Figure 7 Mortality bin at Narrawong facility

Figure 8 Mortality bin at Narrawong facility, showing the lime and sand

cover used

5.3.4 Water bird odour

As shown in Figure 9, the wastewater pond at the Narrawong facility had sea gulls present at

the time of the site inspection and, according to the site manager, birds often make use of the

constructed wetland.

No significant odour was noted at the lagoons with minor and inoffensive odour from waterfowl,

which tended to defecate around the pond area.

Due to the close geographical location of the proposed aquaculture facility to the Narrawong

facility and the nearby Indian Ocean, it is expected that a similar or slightly greater quantity of

sea gulls would visit the proposed Nyamat site, resulting in a comparable odour emission.

Mitigation

Bird management will be greatly improved at the new Nyamat facility with all ponds and

retention basins being covered in a bird mesh, preventing birds from settling onsite at these

locations.

Management of birds in this manner is expected to reduce any odour from faecal defecation

significantly to the point where it is expected to be no more than a minor onsite odour and not

noticeable beyond the property boundary to any degree other than what seabirds are already

contributing to the beach front location.


Figure 9 Waterbirds on wastewater treatment pond at Narrawong


6. Operational noise assessment

An impact assessment of operational noise sources at the proposed Nyamat facility has been

undertaken. The assessment was undertaken relative to local meteorology, sensitive receiver

locations and relevant EPA noise requirements.

6.1 Existing noise environment

6.1.1 Sensitive receivers

Aerial photography and a site visit were used to identify the nearest sensitive receivers

surrounding the proposed facility. Potential sensitive receptors have been identified in the Rural

Living Zone (RLZ), Public Park and Recreation Zone (PPRZ) and Special Use Zone (SUZ). The

location of each zone is presented in Figure 2.

Distances from these sensitive receptors to the proposed facility were calculated based on the

site boundary to 10 metres from the most noise affected façade. The location of the identified

sensitive receptors are shown in Figure 10 and are listed in Table 1.

Table 1 Sensitive receivers

Sensitive Receivers

ID

X Coordinate

EASTING (m)

Y Coordinate

NORTHING (m)

Approximate Distance from the Abalone Site

Boundary

(m)

Direction from the Project site

R1 553446 5760319 48 W

R2 553683 5760403 12 S

R3 553738 5760421 32 S

R4 553759 5760434 34 S

R5 553777 5760440 40 S

R6 553784 5760468 22 S

R7 553812 5760483 28 S

R8 553855 5760510 32 S

R9 553867 5760528 25 S

R10 553892 5760541 30 S

R11 553909 5760562 23 S

R12 553954 5760595 25 S

R13 553968 5760610 22 S

R14 553978 5760623 17 S

R15 554005 5760626 31 S

R16 554011 5760647 19 S

R17 554152 5760764 9 S

R18 554185 5760753 37 S

R19 554219 5760776 37 S


Sensitive Receivers

ID

X Coordinate

EASTING (m)

Y Coordinate

NORTHING (m)

Approximate Distance from the Abalone Site

Boundary

(m)

Direction from the Project site

R20 554265 5760796 65 SE

R21 554297 5760807 94 SE

R22 554319 5760818 111 SE

R23 554367 5760841 155 SE

R24 554399 5760858 182 SE

R25 554420 5760869 200 SE

R26 554444 5760888 223 SE

R27 554455 5760915 232 SE

R28 554499 5760915 274 SE

R29 554503 5760948 275 SE

R30 554501 5760965 270 SE

R31 554530 5760982 297 SE

R32 554210 5761373 40 NE

R33 554038 5761334 33 N

R34 553606 5761160 0 N

R35 553559 5761021 27 NW

R36 553350 5760801 206 NW

R37 553311 5760880 253 NW

R38 553217 5760791 336 NW

R39 553139 5760764 411 NW

R40 553061 5760679 475 NW

R41 553067 5760554 453 NW

R42 553067 5760484 445 NW

Figure 10Sensitive Receiver Locations

R1 R2

R16

R17

R31

R32R33

R34

R35

R42

R36

R37

R38R39

R40

R41

553000

553000

553200

553200

553400

553400

553600

553600

553800

553800

554000

554000

554200

554200

554400

554400

5760

000

5760

000

5760

200

5760

200

5760

400

5760

400

5760

600

5760

600

5760

800

5760

800

5761

000

5761

000

5761

200

5761

200

5761

400

5761

400

5761

600

5761

600

Sound PressureLevel dB(A) 35.0 <= ... < 40.0 dB(A) 40.0 <= ... < 45.0 dB(A) 45.0 <= ... < 50.0 dB(A) 50.0 <= ... < 55.0 dB(A) 55.0 <= ... < 60.0 dB(A) 60.0 <= ... < 65.0 dB(A) 65.0 <= ... < 70.0 dB(A) 70.0 <= ... < 75.0 dB(A)

Yumbah Abalone Farm

Noise Impact AssessmentSensitive Receivers1.5 Metres Height

ISO 9613 Algorithm


6.2 Background noise monitoring

Background noise monitoring was undertaken at two locations to accurately characterise

existing noise levels. Background noise levels were analysed for each of the prescribed time

periods specified by the Victorian EPA (2008) shown in Table 2.

Table 2 Prescribed assessment periods

Period Time

Day 7.00 am – 6.00 pm (Mon – Fri)

7.00 am – 1.00 pm (Sat)

Evening

6.00 pm – 10.00 pm (Mon – Fri)

1.00 pm – 10.00 pm (Sat)

7.00 am – 10.00 pm (Sun)

Night 10.00 pm – 7.00 am

6.2.1 Instrumentation

Background noise measurements were taken from 27 November 2017 through to 28 December

2017. Details of the monitoring instrumentation and start/stop times is presented in Table 3.

Table 3 Background noise measurement instrumentation

Model SVAN 955 SVAN 955

Serial no. 27613 27615

Type 1 1

Start date 27 November 2017 27 November 2017

Finish date 28 December 2017 28 November 2017

Pre-measurement calibration check (94.0 db @ 1000 Hz)

94.0 114*

Post-measurement calibration check (94.0 db @ 1000 Hz)

94.3 -**

Integration time interval 15 minutes 15 minutes

Frequency weighting A A

Time response Fast Fast

Engineering units dB(A) SPL re:20 µPa

dB(A) SPL re:20 µPa

*high background induced noise interfered with field calibration so used 114 dB level rather than 94 dB @ 1kHz

**Logger failed prematurely due to battery discharge, no post measurement calibration available.

6.2.2 Unattended measurements

Unattended logger measurements were undertaken at two locations, namely the Frank Lodge

Scenic Lookout and Dutton Way. Local meteorological data was also acquired during the

monitoring period. The instrument set up and unattended noise monitoring results for both

locations are presented below.

Location 1 - Frank Lodge Scenic Lookout

The instrument setup at the Frank Lodge monitoring location is shown in Figure 11. The

monitoring results are presented in Table 4.


Figure 11 Instrumentation set up for unattended measurements at location 1

Table 4 Summary of unatttended noise monitoring results at Location 1

Monitoring period

Background LA90, 1hour dB(A) Ambient LAeq dB(A)

Day

time Evening

Night

time

Day

time Evening

Night

time

27/11/2017 - - 38* - - 44*

28/11/2017 40 40* - 46 43* -

Overall 40 40 38 46 43 44

1. Where an asterix (*) is presented, this signifies the value does not contain a full set of measurements for this period.

2. Where a dash (-) is presented, this signifies no valid data was collected for this period.

Location 2 - Dutton Way

The instrument setup at the Dutton Way monitoring location is shown in Figure 12. The

monitoring results are presented in Table 5.

Figure 12 Instrumentation set-up for unattended measurements at location 2


Table 5 Summary of unatttended noise monitoring results at Location 2

Monitoring period

Background LA90, 1hour dB(A) Ambient LAeq dB(A)

Day

time Evening

Night

time

Day

time Evening

Night

time

27/11/2017 - - 42* - - 49*

28/11/2017 42 44 41 55 53 48

29/11/2017 35* 40* 38* 54* 58* 48*

30/11/2017 38 36 31* 60 53 49*

1/12/2017 45 46 47* 57 54 62*

2/12/2017 50 51 49* 65 66 63*

3/12/2017 41 31 36* 75 70 69*

4/12/2017 - - - - - -

5/12/2017 - 44 43 - 54 49

6/12/2017 38 37 33 56 54 47

7/12/2017 40 39 34* 56 54 49*

8/12/2017 39 38 31 57 54 47

9/12/2017 39 34 27* 56 52 46*

10/12/2017 35 35 31 55 52 46

11/12/2017 35 40 38* 56 54 48*

12/12/2017 37 41 37 56 54 47

13/12/2017 40 34 28 56 53 46

14/12/2017 39 33 29 55 53 45

15/12/2017 34* - - 55* - -

Overall 39 39 36 64 61 59

1. Where an asterix (*) is presented, this signifies the value does not contain a full set of measurements for this period.

2. Where a dash (-) is presented, this signifies no valid data was collected for this period.

Animal damage

An animal chewed the cable at the Dutton Way measurement site causing the cable to have to

be replaced - see Figure 13. The cable was found and replaced on 5/12/2017. The affected time

periods are dashed in Table 5 and have been removed from further calculation.

Figure 13 Damaged cable at Dutton Way logger site


6.2.3 Attended measurements at proposed site

Attended measurements were taken at each logger location for day, evening and night time

periods. Attended measurements were taken over a 15 minute period to coincide with the long

term unattended noise logging. At the time of the evening measurement at the Frank Lodge

Scenic Lookout location, wind speeds were greater than the 5 m/s threshold at 6.9 m/s, and as

such the results for this time period while presented in this report for completeness are

considered invalid.

The sound level meter was calibrated before and after the measurements were performed and

was found to be within the required margin of 1 dB(A) pre and post calibration.

Instrumentation used and field calibrations are presented in Table 6 and summary results of the

attended measurements are presented in Table 7.

Measurements show that the Frank Lodge Scenic Lookout location had lower background noise

levels LA90 dB(A) when compared to the measurements taken adjacent to Dutton Way by 3 to 4

dB(A). This is expected due to its more isolated location, distance back from the ocean and

relatively few sensitive receiver locations surrounding the site.

Generally, noise in the area was found to consist of ocean noise and animal sounds, with

occasional traffic along Dutton Way and an aeroplane flyover during the day period.

Table 6 Attended noise measurement equipment details

Measurement

date

Equipment

type

Equipment

model

Serial

number

Class

(Type)

Octave

band

frequency

mode

Weighting

and time

response

27 November

2017

Sound Level

Meter

Bruel &

Kjaer 2270 3009634

Type 1

1/3 Octave A/Fast

Microphone Bruel &

Kjaer 4189 3086784

Acoustic

Calibrator

Bruel &

Kjaer 4231 2560035 - -

28 November

2017

Sound Level

Meter

Bruel &

Kjaer 2270 3009634

Type 1

1/3 Octave A/Fast

Microphone Bruel &

Kjaer 4189 3086784

Acoustic

Calibrator

Bruel &

Kjaer 4231 2560035 - -


Table 7 Summary of attended background noise measurement results

Measurement

location

Period Starting

measurement

date & start time

in (hh:mm)

Measurement

duration

(mm:ss)

Background

noise levels

LA90 dB(A)

Ambient

noise

levels

LAeq

dB(A)

Maximum

noise

levels

LAmax

dB(A)

Minimum

noise

levels

LAmin

dB(A)

Comments

At logger location 1

(Frank Lodge

Scenic Lookout)

Daytime 28 November

2017 (9:00 am) 15:00 39 44 60 37

Occasional car or truck passing

Occasional noise from cattle and birds

Occasional distant dog barking in last eight minutes

Commercial aeroplane passing in 8th minute


(Dutton Way) Daytime

28 November

2017 (9:45 am) 15:00 43 51 69 39

Ocean noise in background

Bugs and birds frequently in background

Occasional car passing


(Frank Lodge

Scenic Lookout)

Evening 27 November

2017 (8:00 pm) 15:00 45* 53* 66* 41* * - Invalid measurement (Wind speed too high)


(Dutton Way) Evening

27 November

2017 (9:30 pm) 15:00 46 49 65 45

Background noise from frogs or crickets

Trees/grass rustle by wind (prominent background)

Wallaby hopping by and jumping fence in last minute

Car passing


(Frank Lodge

Scenic Lookout) Night-time

28 November

2017 (1:15 am) 15:00 42 44 52 40

Occasional noise from cattle and birds


Frogs or crickets in background

Lull in noises with just ocean and one cricket/frog

42.7-46.0 dB(A)


(Dutton Way) Night time

28 November

2017 (12:30

am)

15:00 45 46 51 43

Trees/grass rustle by wind (prominent background)


Crickets in background

Lull in noises with just ocean and faint crickets 45.0-46.0 dB(A)


6.3 Applicable noise criteria

The following section outlines the noise criteria relevant to the proposed Nyamat facility.

6.3.1 Victorian noise policy and guidelines

There are two key industrial noise control documents currently used in Victoria, namely:

State Environment Protection Policy – Control of Noise from Commerce, Industry and

Trade No. N-1 (SEPP N-1) (Victorian Government, 1989)

Noise from Industry in Regional Victoria (NIRV): Recommended maximum noise levels

from commerce, industry and trade premises in regional Victoria (EPA publication 1411)

(EPA Victoria, 2011)

The SEPP N-1 is applicable for sensitive receivers located in a Major Urban Area (MUA), with

potential impact from industrial noise. A ‘Major Urban Area’ is defined as:

The part of Melbourne that is within the SEPP N-1 boundary, refer to Figure 14; or

The part of Melbourne that extends beyond the SEPP N-1 boundary, but is within the

Melbourne Urban Growth Boundary (UGB), refer to Figure 14; or

Land within the ‘Major Urban Area’ boundary of an Urban Centre with a population

greater than 7000, refer to Figure 15

Land zoned either Residential Zone, Industrial Zone, Business Zone or Urban Growth

Zone that is transected by the ‘Major Urban Area’ boundary of an Urban Centre with a

population greater than 7000, then the whole of that zone shall be considered as part of

the MUA.

The NIRV guideline is applicable for sensitive receivers located in a rural area outside of those

areas outlined above that may potentially be impacted from industrial noise. A rural area is

defined as:

‘A rural area is land that is not within a major urban area. It includes land in cities or towns with

population below 7000, and rural locations outside major urban areas’ (EPA Victoria, 2011).

Figure 14 Areas covered by SEPP N-1 and Planning UGB (EPA Victoria, 2011)


Source: EPA Victoria, 2011

Figure 15 Portland major urban area boundary (EPA Victoria, 2011)

6.3.2 Applicable method of assessment criteria

The project site and nearby sensitive receivers to the west, north and east are located beyond

the SEPP N-1 area and the Melbourne Urban Growth boundary (EPA Victoria, 2011). These

receivers have therefore been assessed against the NIRV guideline.

The Duttonway SUZ3 is designated as such to address the significant adverse environmental,

economic and social effects of allowing housing development in an area under threat of marine

erosion. In this instance the SUZ3 does not default to INZ3 as per the footnote at the bottom of

Table 1 in the NIRV and instead would be classified in a similar manner to the surrounding land

RLZ. As such, this area has been assessed in a similar manner to receivers in the surrounding

RLZ. Consequently, these receivers have been assessed against the NIRV guideline.

The sensitive receivers located along the coast on Dutton Way up to the Great South West

Walk fall beyond the SEPP N-1 area but within the Melbourne Urban Growth Boundary (EPA

Victoria, 2011). NIRV guideline makes the following statement under EPA Publication 1411:

“Where either the noise emitter or the noise receiver is within a major urban area, the major

urban area approach applies.” (EPA Victoria, 2011)


Based on the above statement, the noise criteria applicable to these receptors has been based

on the SEPP N-1. Table 8 provides a summary of the applicable criteria for nearby sensitive

receivers.

Table 8 Applicable criteria

Sensitive Receivers ID X Coordinate

EASTING (m)

Y Coordinate

NORTHING (m)

Relevant Criteria

R1 553446 5760319 SEPP-N1

R2 553683 5760403 SEPP-N1

R3 553738 5760421 SEPP-N1

R4 553759 5760434 SEPP-N1

R5 553777 5760440 SEPP-N1

R6 553784 5760468 SEPP-N1

R7 553812 5760483 SEPP-N1

R8 553855 5760510 SEPP-N1

R9 553867 5760528 SEPP-N1

R10 553892 5760541 SEPP-N1

R11 553909 5760562 SEPP-N1

R12 553954 5760595 SEPP-N1

R13 553968 5760610 SEPP-N1

R14 553978 5760623 SEPP-N1

R15 554005 5760626 SEPP-N1

R16 554011 5760647 SEPP-N1

R17 554152 5760764 SEPP-N1

R18 554185 5760753 SEPP-N1

R19 554219 5760776 SEPP-N1

R20 554265 5760796 NIRV

R21 554297 5760807 NIRV

R22 554319 5760818 NIRV

R23 554367 5760841 NIRV

R24 554399 5760858 NIRV

R25 554420 5760869 NIRV

R26 554444 5760888 NIRV

R27 554455 5760915 NIRV

R28 554499 5760915 NIRV

R29 554503 5760948 NIRV

R30 554501 5760965 NIRV

R31 554530 5760982 NIRV

R32 554210 5761373 NIRV

R33 554038 5761334 NIRV

R34 553606 5761160 NIRV

R35 553559 5761021 NIRV

R36 553350 5760801 NIRV


Sensitive Receivers ID X Coordinate

EASTING (m)

Y Coordinate

NORTHING (m)

Relevant Criteria

R37 553311 5760880 NIRV

R38 553217 5760791 NIRV

R39 553139 5760764 NIRV

R40 553061 5760679 NIRV

R41 553067 5760554 NIRV

R42 553067 5760484 NIRV

6.3.3 Determining the NIRV related criteria

Noise from industry in regional Victoria1 (NIRV) manages the impact of noise on residential and

other noise-sensitive uses and should be applied when siting or designing new or expanded

industry or plant and when government authorities assess applications for industry in regional

Victoria.

NIRV sets the maximum noise level allowed in a noise sensitive area from commercial/industrial

premises depending on the time of day and land use zoning. The first step is to determine the

land-use zones of the receiving zone2 and generating zone3. Once the receiving and generating

zones are known, then using Table 1 in the NIRV guideline, the Zone Noise Levels are

developed for each time period. The obtained Zone Noise Levels are then adjusted depending

on the receiver-to-source distance to obtain the maximum allowable planning noise levels.

In a situation where background noise levels may be higher than usual for a rural area due to

traffic noise or coastal noise, background noise monitoring may be undertaken and an

adjustment of the Zone Noise Levels made accordingly to determine the maximum allowable

noise levels.

Portland is a coastal area and as such under the NIRV, would be classified as a ‘background-

relevant area’ where elevated background noise levels occur due to surf noise. Long-term

unattended and short tern attended noise monitoring was undertaken as a consequence - see

section 6.2.

The following steps were then followed to develop the noise criteria for sensitive receivers under

the NIRV:

STEP 1: Identification of Zones from Table 1 of the NIRV (EPA Publication 1411, 2011)

– RLZ generating zone and RLZ for receivers

– The SUZ3 to the south east is designated as RLZ for this project as described in Step

1 of the NIRV – Refinement of the non-specific zones.

STEP 2: Distance adjustment levels. One decibel is to be subtracted for every 100

metres of ‘receiver distance’ where the noise generator and receiver are in different land

use zones, as stipulated in the NIRV.

STEP 3: Base noise level check. Check distance adjusted noise levels from step 2 against

the following base noise levels for each period:

– Day 45 dB(A)

– Evening 37 dB(A)

– Night 32 dB(A)

1 Part of Victoria that extends beyond the SEPP N-1 area and Planning Urban Growth Boundary and not classified as Major Urban Area (EPA Victoria, 2011). 2 ‘Receiving zone’ is the land-use zone in which the noise-sensitive area is located. 3 ‘Generating zone’ is the land-use zone in which the noise emitter is located.


For each period, the greater of the distance- adjusted level and the base noise level is adopted.

STEP 4. Background level check and adjustment. A background level assessment may

be required where the location of the noise sensitive receivers is considered to be situated

within a ‘Background-relevant area’4. As discussed, monitoring was undertaken, and has

been considered for this adjustment.

STEP 5. High traffic noise areas. This step applies to background-relevant areas affected

by high traffic-noise levels. This is applicable in this instance as Princes Highway is located

directly to the north of the proposed facility.

Table 9 presents the derived NIRV noise criteria applicable for the identified nearest sensitive

receivers.

Table 9 Derived NIRV noise criteria for the nearest identified receivers

dB(A) LAeq

Steps Daytime

7am – 6pm (Mon – Fri)

7am – 1pm (Sat)

Evening-time

6pm – 10pm (Mon – Fri)

1pm – 10pm (Sat)

7am – 10pm (Sun)

Night-time

10pm – 7am

STEP 1 45 38 33

STEP 2 a

45

(no adjustment same contiguous zone)

38


33


STEP 3 45

(base is 45 dB(A))

38

(base is 37 dB(A))

33

(base is 32 dB(A))

STEP 4 b 39+8=47 39+5=44 36+5=41

STEP 5 47

(reference is 55 dB(A))

44


41


Derived NIRV Criteria cdB(A) LAeq

47 44 41

a The noise generator and noise receiver are in the same zone classification (RLZ).

b The Dutton Way logger data has been used for setting criteria, as the Frank Lodge logger shutdown prior to capturing

any significant amount of data.

c The Duttonway SUZ3 is designated as such to address the significant adverse environmental, economic and social

effects of allowing housing development in an area under threat of marine erosion. In this instance the SUZ3 does not

default to INZ3 as per the footnote at the bottom of Table 1 in the NIRV and instead would be classified in a similar

manner to the surrounding land RLZ and as such is treated here in a similar many to receivers in the surrounding RLZ.

6.3.4 Determining the SEPP N-1 related criteria

Noise from industry within Melbourne’s Planning UGB is managed using the SEPP N-1. The

SEPP N-1 manages the impact of noise on residential and other noise-sensitive uses and

should be applied when siting or designing new or expanded industry or plant and when

government authorities are assessing applications for new and expanding industry.

SEPP N-1 sets the maximum noise limit allowed in a noise sensitive area emanating from

commercial/industrial premises depending on the time of day, evening, or night; land use

zoning; and existing background noise levels.

4 ‘Background-relevant area’ means a noise-sensitive area where background levels may be higher than usual for a rural area. This includes areas where freeway or highway traffic is a significant audible background noise source. It also includes coastal

areas, where representative background levels are elevated by surf noise.


The first step in assessing the noise limit is to calculate the prescribed upper noise limit (Zoning

Level or Zoning Limit) for the particular land use in line with Schedule B2 of the SEPP N-1.

Once the zoning level has been developed, the background level is assessed as to whether the

background levels are neutral (i.e. not significantly higher or lower than the zoning level) or

otherwise. If the background level is neutral, the noise limit adopted is the zoning level. If, on the

other hand, the background level is found to be significantly lower or higher than the zoning

level then the noise limit is reduced or increased accordingly.

The following section details the derivation of SEPP N-1 noise limits applicable for the Project

site. Schedule B2 of the SEPP N-1 outlines how zoning levels for a day period, evening period

and night period must be determined using the following equations:

𝐷𝑎𝑦 𝑝𝑒𝑟𝑖𝑜𝑑: 𝑧𝑜𝑛𝑖𝑛𝑔 𝑙𝑒𝑣𝑒𝑙 = 18 × 𝐼𝑛𝑓𝑙𝑢𝑒𝑛𝑐𝑖𝑛𝑔 𝐹𝑎𝑐𝑡𝑜𝑟 + 50

𝐸𝑣𝑒𝑛𝑖𝑛𝑔 𝑝𝑒𝑟𝑖𝑜𝑑: 𝑧𝑜𝑛𝑖𝑛𝑔 𝑙𝑒𝑣𝑒𝑙 = 17 × 𝐼𝑛𝑓𝑙𝑢𝑒𝑛𝑐𝑖𝑛𝑔 𝐹𝑎𝑐𝑡𝑜𝑟 + 44

𝑁𝑖𝑔ℎ𝑡 𝑝𝑒𝑟𝑖𝑜𝑑: 𝑧𝑜𝑛𝑖𝑛𝑔 𝑙𝑒𝑣𝑒𝑙 = 17 × 𝐼𝑛𝑓𝑙𝑢𝑒𝑛𝑐𝑖𝑛𝑔 𝐹𝑎𝑐𝑡𝑜𝑟 + 39

Where, the Influencing Factor (IF) shall be calculated from the following formula:

𝐼𝐹 = 1

2

(𝑎𝑟𝑒𝑎 𝑡𝑦𝑝𝑒 3 + 12⁄ (𝑎𝑟𝑒𝑎 𝑡𝑦𝑝𝑒 2))

(𝑡𝑜𝑡𝑎𝑙 𝑎𝑟𝑒𝑎 𝑜𝑓 𝑐𝑖𝑟𝑐𝑙𝑒) 140𝑚 𝑐𝑖𝑟𝑐𝑙𝑒

+ 1

2

(𝑎𝑟𝑒𝑎 𝑡𝑦𝑝𝑒 3 + 12⁄ (𝑎𝑟𝑒𝑎 𝑡𝑦𝑝𝑒 2))

(𝑡𝑜𝑡𝑎𝑙 𝑎𝑟𝑒𝑎 𝑜𝑓 𝑐𝑖𝑟𝑐𝑙𝑒) 400𝑚 𝑐𝑖𝑟𝑐𝑙𝑒

Two concentric circles of diameter 140 m and 400 m must be drawn or reproduced to scale on

the relevant map, centered on the measurement point in the noise sensitive area. The area of

all the SEPP N-1 Type 2 and 3 zones and reservations must be measured for each of the two

circles from the same map.

Table 10 Calculated SEPP N-1 zoning levels at the identified sensitive

receivers

Nearby

sensitive

receptors

Period Influencing

factor

SEPP N-1

zoning

levels dB(A)

Background

noise levels

LA90 dB(A)

Background

High, Low,

Neutral

Noise Limit

R5-R7

Day

0

50 39 Neutral 50

Evening 44 39 Neutral 44

Night 39 36 Neutral 39

6.3.5 Emergency criteria

Under the SEPP-N1 an allowance is made for situations where an emergency event requires

use of either a standby generator, standby boiler or fire pump. In these situations the noise limit

shall increase by 10 dB for a day period and 5 dB for an evening or night period.

The proposed facility has standby generators and emergency pumps, which in a power failure

or pump house failure may be required to be activated in order to preserve the lives of the

abalone. The abalone require a continual flow of water to provide oxygen and maintain their

temperature, which would be a significant issue during summer months, should a power failure

or pump house issue occur.


Table 11 Emergency criteria

Nearby sensitive

receptors Period Derived noise limit Emergency Noise Limit

NIRV

Day 47 57

Evening 44 49

Night 41 46

SEPP-N1

Day 50 60

Evening 44 49

Night 39 44

6.4 Environmental noise impact

The following section provides a description of the noise modelling scenarios, methodology,

assumptions and results of a cumulative noise assessment undertaken by GHD for the

proposed Nyamat facility relative to the local meteorology, sensitive receiver locations and

associated EPA noise level criteria.

6.4.1 Modelling scenarios

Two noise modelling scenarios were undertake involving the following operating conditions:

Scenario A – Normal operations

Tipper buckets in grow out area (64x)

– 4x main sections

– 4x sub sections

– 4x growout pads in each sub section

Nursery Sand filtration units (16x)

Small nursery pumps (8x)

Nursery compressors (4x)

Nursey blowers

Open channel water flow

Internal roads

Pump house (4x rooms each with 4x pumps plus one standby pump)

Effluent pumps (4x)

Hatchery shed (3x sand filters and 2x blowers)

Live harvest shed (6x sand filters and 2x blowers)

Scenario B – Emergency Generators and Pumps in Use

All of the sources modelled in Scenario 1

Emergency Generators in operation

– 4x stacks (Chimney VDI 3733 algorithm)

– Exhaust Velocity 17 m/s

– Exhaust Gas Temperature 650°C

– Wind Speed 3 m/s

– 4x internal building noise sources (four pumps and generator per pump house room)

Emergency pumps in operation (4x)


6.4.2 Modelling methodology

Noise modelling was undertaken using Computer Aided Noise Abatement (CadnaA) V 2018-

MR1 noise modelling software to predict the effects of operational related noise from the Project

site.

CadnaA is a computer program for the calculation, assessment and prognosis of noise

propagation. CadnaA calculates environmental noise propagation according to ISO 9613-2,

“Acoustics – Attenuation of sound during propagation outdoors” and other algorithms.

Propagation calculations take into account sound intensity losses due to hemispherical

spreading, atmospheric absorption and ground absorption.

The ISO 9613-2 algorithm also takes into account the presence of a well-developed moderate

ground based temperature inversion, such as commonly occurs on clear, calm nights or

‘downwind’ conditions, which are favourable to sound propagation. As a result, predicted

received noise levels are expected to represent a worst case scenario, however given the

relatively small distances involved, enhancement of noise due to weather is expected to be

minimal.

6.4.3 Attended measurements at existing site

Attended noise measurements were taken at the existing Narrawong facility of equipment

similar to that likely to be deployed in the proposed Nyawong facility. Table 12 shows some of

the onsite equipment producing noise at the Narrawong facility. The corresponding equipment

sound power levels are presented in Table 13.

Table 12 Site equipment at Narrawong site (images taken 28/11/2017)

Secondary Generator Pump 2 Pump 3

Outside Small Generator

Shed

Small Generator HOH SING Air Blower


Fan (TAG4553T) in small

shed

Small Compressor Water coolers (outside

handling shed)

Carrier Fan Air Conditioner Tipper (emptying)

Pump (Round Tanks) Blower (Round Tanks) Water Inlet (Round Tanks)

Pressure Release (Round

Tanks)

Water Inlet (Blackout) Sand Filter

Large Generator Pump Shed


Table 13 Measured noise sources at Narrawong facility

Site Noise Source Octave centre frequency (Hz) dB(A)

Lw dB(A) Lin (dB)

31.5 63 125 250 500 1000 2000 4000 8000

Narr

aw

ong

Secondary Generator 31.3 54.2 61.7 73.3 84.2 92.7 91.6 87.1 75.6 98.1 98.3

Pump 2 34.0 52.2 59.7 70.6 75.8 86.8 77.6 71.6 60.1 89.8 91.1

Pump 3 36.4 60.8 64.8 68.8 79.8 89.8 78.8 72.5 64.4 92.6 94.9

Outside Small Generator Shed 35.0 69.5 73.9 82.4 86.9 86.8 84.7 76.6 70.8 99.8 106.9

Small Generator 47.2 81.4 87.5 93.2 100.5 102.8 101.5 96.6 91.5 115.2 119.9

HOH SING Air Blower 35.6 49.9 55.4 63.4 72.3 73.7 70.2 67.7 61.7 79.8 84.4

TAG Fan 34.9 51.9 61.3 66.4 73.9 75.8 72.4 68.5 60.6 81.7 86.5

Small Compressor 34.1 50.5 52.3 62.6 72.0 73.3 71.2 71.6 66.3 80.5 84.3

Water Coolers (handling shed) 33.1 57.4 58.5 66.9 71.0 74.0 74.3 64.6 58.6 80.7 87.8

Carrier Fan 33.4 55.2 61.5 63.9 65.9 67.3 66.0 56.9 49.5 74.5 85.9

Air Conditioner 34.6 52.8 66.8 76.2 75.2 76.9 74.3 68.4 59.5 90.1 96.7

Water Race (eastern) 18.1 30.1 36.4 48.9 60.4 64.9 67.0 64.9 58.0 79.1 79.5

Tipper (eastern) 22.6 37.0 50.0 53.5 63.8 69.1 70.1 67.5 60.9 86.0 87.1

Water Race (nursery) 18.4 35.1 43.6 46.5 59.6 62.9 62.7 59.3 54.0 69.7 71.7

Pump (round tanks) 28.4 47.1 56.5 63.1 64.3 68.4 69.9 68.7 65.3 71.1 75.5

Blower (round tanks) 29.5 47.1 56.4 63.0 71.2 74.2 74.9 71.0 62.8 81.4 83.8

Water Inlet (round tanks) 23.1 39.5 48.5 54.1 60.3 65.2 64.5 69.0 61.4 74.2 76.1

Pressure Release (round tanks) 22.0 43.1 45.7 51.5 58.5 64.2 69.1 73.6 75.9 80.6 81.6

Water Inlet (blackout) 22.8 52.8 49.0 55.6 60.8 66.2 67.9 65.3 60.9 74.2 82.1

Sand Filter 23.8 49.6 46.4 49.8 58.2 62.4 60.0 56.3 59.9 69.0 78.8

Large Generator 49.8 66.5 78.8 89.6 96.9 101.4 102.8 96.9 86.9 108.4 109.4

Walkthrough Pump Shed 34.3 59.4 76.4 83.1 87.7 93.2 93.4 87.6 76.8 97.6 99.6


6.4.4 Equipment modelled

Table 14 shows the primary noise generating equipment inside the proposed Nyamat facility

and pump station with emergency generators and pumps that were used in the noise model,

with the sound power levels. Graphical representation of 3D model can be found in Figure 18.


Table 14 Equipment modelled for Nyamat facility


Lw dB(A) Lin (dB)

31.5 63 125 250 500 1000 2000 4000 8000

Narr

aw

ong

Nursery Enclosure Blower 29.8 44.1 49.6 58.9 69.2 72.6 69.1 65.8 59.8 76.1 78.7

Nursery Small Pump 24.3 43.0 52.4 59.0 60.2 64.3 65.8 64.6 61.2 71.1 75.5

Nursery Sand Filter 25.8 51.6 48.4 51.8 60.2 64.4 62.0 58.3 61.9 69.0 78.8

Nursery Compressor 36.1 52.5 54.3 64.6 74.0 75.3 73.2 73.6 68.3 80.5 84.3

Hatchery Sand Filter 25.8 51.6 48.4 51.8 60.2 64.4 62.0 58.3 61.9 69.0 78.8

Hatchery Blower 37.6 51.9 57.4 65.4 74.3 75.7 72.2 69.7 63.7 79.8 84.4

Live Harvest Sand Filter 25.8 51.6 48.4 51.8 60.2 64.4 62.0 58.3 61.9 69.0 78.8

Live Harvest Blower 37.6 51.9 57.4 65.4 74.3 75.7 72.2 69.7 63.7 79.8 84.4

Effluent Pump 58.8 75.5 85.6 93.5 97.4 101.5 102.6 98.5 91.8 106.9 110.0

Pump House Pump 38.4 62.8 66.8 70.8 81.8 91.8 80.8 74.5 66.4 92.6 94.9

Canal water flow 18.4 35.1 43.6 46.5 59.6 62.9 62.7 59.3 54.0 69.7 71.7

Cars on internal road 48.6 62.6 68.6 72.6 78.6 80.6 76.6 71.6 63.6 84.4 93.3

Trucks on internal road 65.6 76.3 89.8 88.1 87.2 93.7 91.2 86.9 78.2 98.0 109.9

Tipper 34.1 48.5 61.5 65.0 75.3 80.6 81.6 79.0 72.4 86.0 87.1

Store Room Refrigeration 66.0 65.0 70.0 73.0 73.0 71.0 69.0 64.0 60.0 79.1 105.6



Lw dB(A) Lin (dB)

31.5 63 125 250 500 1000 2000 4000 8000 E

merg

ency G

enera

tor

& P

um

ps

Emergency Generator Stack 51.8 68.5 80.8 91.6 98.9 103.4 104.8 98.9 88.9 108.4 109.4

Emergency Generator Internal 33.3 56.2 63.7 75.3 86.2 94.7 93.6 89.1 77.6 98.1 98.3

Emergency Pump 58.8 75.5 85.6 93.5 97.4 101.5 102.6 98.5 91.8 106.9 110


6.4.5 Modelling assumptions

The following assumptions and parameters were adopted for this noise impact assessment:

A ground absorption coefficient of 0.75 (where 0 is non-porous ground and 1 is porous

ground)

Day, Evening and Night periods were designated as follows:

– Day 7 am to 6 pm (11 hours)

– Evening 6 pm to 10 pm (4 hours)

– Night 10 pm to 7 am (9 hours)

First order of maximum building reflection

Site topography and three dimensional terrain has been incorporated in the model

Canal water flow noise was modelled as a line source and assumed to be operating

continuously throughout the day, evening and night time periods

Facility noise was modelled to be operating continuously throughout the day, evening and

night time period

Tipping buckets were modelled to tip once every 10 minutes for 10 seconds, which is

equivalent to 11 minutes per day, four minutes per evening, and nine minutes per night

time period.

The pump station is assumed to be operating continuously throughout the day, evening

and night time period with four rooms each with five pumps running.

Minimum sound transmission loss for canals as presented in Table 15.

Minimum sound transmission loss through various buildings as presented in Table 16.

Stack attenuation as presented in Table 17. It is also assumed that noise emission at the

noise sensitive receivers does not possess dominant noise characters in accordance with

SEPP N-1

Table 15 Minimum sound transmission loss through various buildings dB(A)

Plant Item Octave Centre Frequency (Hz) Data

Source 63 125 250 500 1000 2000 4000 8000 RW

Nursery Shed

Wall - 31.0 35.0 40.0 47.0 52.0 56.0 - 45 VDI 2571

Nursery Shed

Roof - 31.0 35.0 40.0 47.0 52.0 56.0 - 45 VDI 2571

Live Harvest

Shed Wall - 31.0 35.0 40.0 47.0 52.0 56.0 - 45 VDI 2571

Hatchery Shed

Wall - 31.0 35.0 40.0 47.0 52.0 56.0 - 45 VDI 2571

Effluent Pump

Shed Wall - 31.0 35.0 40.0 47.0 52.0 56.0 - 45 VDI 2571

Effluent Pump

Shed Roof 8.0 10.0 14.0 19.0 24.0 29.0 34.0 34.0 23 GHD

Emergency

Pump Shed

Wall

- 31.0 35.0 40.0 47.0 52.0 56.0 - 45 VDI 2571


Plant Item Octave Centre Frequency (Hz) Data

Source 63 125 250 500 1000 2000 4000 8000 RW

Emergency

Pump Shed

Roof

8.0 10.0 14.0 19.0 24.0 29.0 34.0 34.0 23 GHD

Pump House

Wall - 44.0 44.0 50.0 56.0 58.0 62.0 - 54 VDI 2571

Pump House

Roof 43.0 43.0 43.0 47.0 55.0 63.0 68.0 73.0 59 INSUL

Table 16 Minimum sound transmission loss for canals dB(A)

Plant Item Octave Centre Frequency (Hz)

Data Source 63 125 250 500 1000 2000 4000 8000 RW

25 mm Solid

Wood Covers 14 19 23 27 24 26 32 - 26

Port Of

Melbourne ECI

Spec

Table 17 Stack attenuation dB(A)

Plant Item Octave Centre Frequency (Hz)

Data Source 63 125 250 500 1000 2000 4000 8000 RW

Generator Stack

Silencer 40 43 46 49 49 45 40 32 48

Port Of

Melbourne ECI

Spec

6.4.6 Predicted noise levels

Night time noise criteria are critical for compliance. Predicted noise levels by the proposed

facility at the various sensitive receivers for the two modelled scenarios are provided in Table 18

and presented graphically in Figure 16 and Figure 17.

The normal operational noise level at the nearest sensitive receiver is predicted to be in

compliance with both the SEPP-N1 criterion and the NIRV criterion for this project.

The cumulative noise level at the nearest sensitive receiver during the operation of the

emergency generator is predicted to be in compliance with both the SEPP-N1 criterion and the

NIRV criterion for this project.

Despite the above predictions, it is possible that the presence of noise characters in the noise

emission may lead to non-compliance. Noise characters include impulsiveness or tonality. For

example, electrical transformers frequently emit tonal “buzz’ noise. Pumps and generators

potentially may exhibit a tone. This is difficult to determine in the absence of detailed information

about noise sources and therefore will require testing during compliance monitoring at local

sensitive receiver locations. Care should be taken to avoid the presence of noise characters

audible at sensitive receivers. It is especially relevant to tonal noise that may evoke a high

adjustment to the measured noise levels.


Table 18 Predicted sound pressure levels dB(A) at modelled receivers

Sensitive

Receiver Period

Relevant

SEPP_N1

and NIRV

Noise

Criteria

LAeq dB(A)

SEPP-N1

Emergency

Generator

Noise Criteria

LAeq dB(A)

Scenario A

Predicted

Noise Levels

LAeq dB(A)

Scenario

B

Predicted

Noise

Levels

LAeq dB(A

Complies

A B

R1

SEPP-N1

Day 50 60 26 30 Y Y

Evening 44 49 16 28 Y Y

Night 39 44 16 28 Y Y

R2

SEPP-N1

Day 50 60 28 35 Y Y

Evening 44 49 25 34 Y Y

Night 39 44 25 34 Y Y

R3

SEPP-N1

Day 50 60 30 37 Y Y

Evening 44 49 25 37 Y Y

Night 39 44 25 37 Y Y

R4

SEPP-N1

Day 50 60 30 38 Y Y

Evening 44 49 26 38 Y Y

Night 39 44 26 38 Y Y

R5

SEPP-N1

Day 50 60 30 38 Y Y

Evening 44 49 25 38 Y Y

Night 39 44 25 38 Y Y

R6

SEPP-N1

Day 50 60 32 42 Y Y

Evening 44 49 28 41 Y Y

Night 39 44 28 41 Y Y

R7

SEPP-N1

Day 50 60 30 40 Y Y

Evening 44 49 26 40 Y Y

Night 39 44 26 40 Y Y

R8

SEPP-N1

Day 50 60 30 39 Y Y

Evening 44 49 27 38 Y Y

Night 39 44 27 38 Y Y

R9

SEPP-N1

Day 50 60 31 39 Y Y

Evening 44 49 27 39 Y Y

Night 39 44 27 39 Y Y

R10

SEPP-N1

Day 50 60 30 39 Y Y

Evening 44 49 26 38 Y Y

Night 39 44 26 38 Y Y

R11

SEPP-N1

Day 50 60 33 42 Y Y

Evening 44 49 28 41 Y Y

Night 39 44 28 41 Y Y

R12

SEPP-N1

Day 50 60 32 42 Y Y

Evening 44 49 28 41 Y Y


Sensitive

Receiver Period

Relevant

SEPP_N1

and NIRV

Noise

Criteria

LAeq dB(A)

SEPP-N1

Emergency

Generator

Noise Criteria

LAeq dB(A)

Scenario A

Predicted

Noise Levels

LAeq dB(A)

Scenario

B

Predicted

Noise

Levels

LAeq dB(A

Complies

A B

Night 39 44 28 41 Y Y

R13

SEPP-N1

Day 50 60 33 42 Y Y

Evening 44 49 29 41 Y Y

Night 39 44 29 41 Y Y

R14

SEPP-N1

Day 50 60 34 42 Y Y

Evening 44 49 30 41 Y Y

Night 39 44 30 41 Y Y

R15

SEPP-N1

Day 50 60 33 42 Y Y

Evening 44 49 28 41 Y Y

Night 39 44 28 41 Y Y

R16

SEPP-N1

Day 50 60 35 43 Y Y

Evening 44 49 29 43 Y Y

Night 39 44 29 43 Y Y

R17

SEPP-N1

Day 50 60 32 38 Y Y

Evening 44 49 31 37 Y Y

Night 39 44 31 37 Y Y

R18

SEPP-N1

Day 50 60 26 31 Y Y

Evening 44 49 25 31 Y Y

Night 39 44 25 31 Y Y

R19

SEPP-N1

Day 50 60 27 33 Y Y

Evening 44 49 25 33 Y Y

Night 39 44 25 33 Y Y

R20

NIRV

Day 47 57 25 32 Y Y

Evening 44 49 23 32 Y Y

Night 41 46 23 32 Y Y

R21

NIRV

Day 47 57 24 31 Y Y

Evening 44 49 21 31 Y Y

Night 41 46 21 31 Y Y

R22

NIRV

Day 47 57 24 31 Y Y

Evening 44 49 21 30 Y Y

Night 41 46 21 30 Y Y

R23

NIRV

Day 47 57 22 29 Y Y

Evening 44 49 19 29 Y Y

Night 41 46 19 29 Y Y

R24

NIRV

Day 47 57 22 29 Y Y

Evening 44 49 18 28 Y Y

Night 41 46 18 28 Y Y


Sensitive

Receiver Period

Relevant

SEPP_N1

and NIRV

Noise

Criteria

LAeq dB(A)

SEPP-N1

Emergency

Generator

Noise Criteria

LAeq dB(A)

Scenario A

Predicted

Noise Levels

LAeq dB(A)

Scenario

B

Predicted

Noise

Levels

LAeq dB(A

Complies

A B

R25

NIRV

Day 47 57 21 28 Y Y

Evening 44 49 18 28 Y Y

Night 41 46 18 28 Y Y

R26

NIRV

Day 47 57 20 27 Y Y

Evening 44 49 17 27 Y Y

Night 41 46 17 27 Y Y

R27

NIRV

Day 47 57 20 27 Y Y

Evening 44 49 16 27 Y Y

Night 41 46 16 27 Y Y

R28

NIRV

Day 47 57 19 26 Y Y

Evening 44 49 15 26 Y Y

Night 41 46 15 26 Y Y

R29

NIRV

Day 47 57 19 25 Y Y

Evening 44 49 14 25 Y Y

Night 41 46 14 25 Y Y

R30

NIRV

Day 47 57 19 26 Y Y

Evening 44 49 15 25 Y Y

Night 41 46 15 25 Y Y

R31

NIRV

Day 47 57 19 25 Y Y

Evening 44 49 15 25 Y Y

Night 41 46 15 25 Y Y

R32

NIRV

Day 47 57 19 24 Y Y

Evening 44 49 13 23 Y Y

Night 41 46 13 23 Y Y

R33

NIRV

Day 47 57 22 26 Y Y

Evening 44 49 18 25 Y Y

Night 41 46 18 25 Y Y

R34

NIRV

Day 47 57 39 39 Y Y

Evening 44 49 14 25 Y Y

Night 41 46 14 25 Y Y

R35

NIRV

Day 47 57 25 29 Y Y

Evening 44 49 22 28 Y Y

Night 41 46 22 28 Y Y

R36

NIRV

Day 47 57 23 27 Y Y

Evening 44 49 20 27 Y Y

Night 41 46 20 27 Y Y

R37 Day 47 57 20 26 Y Y


Sensitive

Receiver Period

Relevant

SEPP_N1

and NIRV

Noise

Criteria

LAeq dB(A)

SEPP-N1

Emergency

Generator

Noise Criteria

LAeq dB(A)

Scenario A

Predicted

Noise Levels

LAeq dB(A)

Scenario

B

Predicted

Noise

Levels

LAeq dB(A

Complies

A B

NIRV Evening 44 49 17 25 Y Y

Night 41 46 17 25 Y Y

R38

NIRV

Day 47 57 17 24 Y Y

Evening 44 49 14 24 Y Y

Night 41 46 14 24 Y Y

R39

NIRV

Day 47 57 16 23 Y Y

Evening 44 49 12 23 Y Y

Night 41 46 12 23 Y Y

R40

NIRV

Day 47 57 15 23 Y Y

Evening 44 49 11 22 Y Y

Night 41 46 11 22 Y Y

R41

NIRV

Day 47 57 17 23 Y Y

Evening 44 49 13 22 Y Y

Night 41 46 13 22 Y Y

R42

NIRV

Day 47 57 16 23 Y Y

Evening 44 49 13 22 Y Y

Night 41 46 13 22 Y Y

Figure 16Predicted Noise Contours for Scenario A:

Normal Operations

3030

30

30

35

553000

553000

553200

553200

553400

553400

553600

553600

553800

553800

554000

554000

554200

554200

554400

554400

554600

554600

5760

000

5760

000

5760

200

5760

200

5760

400

5760

400

5760

600

5760

600

5760

800

5760

800

5761

000

5761

000

5761

200

5761

200

5761

400

5761

400

5761

600

5761

600

Sound PressureLevel dB(A)

>= 35.0 dB(A) >= 40.0 dB(A) >= 45.0 dB(A) >= 50.0 dB(A) >= 55.0 dB(A) >= 60.0 dB(A) >= 65.0 dB(A) >= 70.0 dB(A)

Yumbah Abalone Farm

Noise Impact AssessmentOperational Noise Levels - Scenario A

Noise Contours: LAeq (15 minute)Grid Height: 1.5m, ISO 9613 Algorithm

Figure 17Predicted Noise Contours for Scenario B:

Emergency Generators

3035

35

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>= 35.0 dB(A) >= 40.0 dB(A) >= 45.0 dB(A) >= 50.0 dB(A) >= 55.0 dB(A) >= 60.0 dB(A) >= 65.0 dB(A) >= 70.0 dB(A)

Yumbah Abalone Farm

Noise Impact AssessmentOperational Noise Levels - Scenario B

Noise Contours: LAeq (15 minute)Grid Height: 1.5m, ISO 9613 Algorithm


Figure 18 Model Overview


7. Construction noise and vibration

Construction of the plant is projected to take from 3.5 to four years and will be completed over

four major construction phases. The first phase is scheduled to result in the construction of

necessary onsite infrastructure including the office, staff amenity building, the pump pit and the

ocean inlet pipes. The second construction phase involves a significant amount of earthworks

and commissioning of the water pump system. The third phase of construction will result in the

water tanks being constructed. The ancillary solar power plant may be built during the fourth

construction phase or otherwise installed during an earlier phase.

It is envisaged that a substantial amount of concrete works will be performed on site during

construction. The volume of concrete required is estimated volume to be 10,500 m3. About 128

days of concrete works are planned over the construction period. Parts of the construction work

with the highest potential for noise generation are expected to be performed during certain

periods without prolonged noise impact.

Construction of the easements for the intake and discharge water is scheduled to take between

one and three weeks. Construction of the growth modules is scheduled to take about one month

per-module.

7.1 Noise criteria

Victoria does not have statutory limits for air borne construction noise. EPA Victoria has

published two guidance documents:

EPA Publication 1254, Noise Control Guidelines, 2008

EPA Publication 480, Environmental Guidelines for major construction sites, Best

Practice Environmental Management, 1996

EPA Victoria web page (https://www.epa.vic.gov.au/our-work/publications/publication/1996/february/1254)

describes the use of EPA Publication 1254 as:

These guidelines [EPA Publication 1254] are primarily intended to be used by municipal

officers to assist in the resolution of complaints or to avert a possible noise nuisance. Some

guidelines have been prepared so that they could be incorporated into a permit condition of a

development or embodied as a local law. The guidelines are designed, however, to be the

basis of assessment and not the last word.

EPA Publication 1254 provides recommended working hours for construction sites and

guideline levels for works undertaken outside ‘normal working hours’. The recommendations

given in Section 2 of EPA Publication 1254 are summarised in Table 19 and used as the basis

for determining construction noise criteria for the project. They are applicable to residential

receivers only.

https://www.epa.vic.gov.au/our-work/publications/publication/1996/february/1254


Table 19 Construction and demolition guideline levels, EPA Publication 1254

Time Period Guideline Level

Normal working hours

Monday to Friday 7:00 am to 6:00 pm

Saturdays 7:00 am to 1:00 pm

No noise level guidelines apply

Weekend and evening work hours

Monday to Friday 6:00 pm to 10:00 pm

Saturdays 1:00 pm to 10:00 pm

Sundays – all day

Public holidays – all day

Construction noise levels should not exceed the background LA90 level by: 10 dBA or more for up to 18 months after project commencement

5 dBA or more, after 18 months after project commencement

Night

10:00 pm to 7:00 am any day

Noise is to be inaudible within a habitable room, of any residential premises.

The construction noise criteria for an area should be based on the background noise level

measurements which prevail in the area.

The following key limitations of this guideline have been identified:

The lack of an assessable definition for ‘inaudibility’ for the night period.

The recommendation of ‘inaudibility’ inside habitable rooms at night (Monday to Sunday

10 pm to 7 am) is ambiguous and, due to the subjective nature of audibility, does not

provide the contractor or regulator a means for measuring compliance during works.

The absence of daytime noise criteria.

A project of this size is expected to have long periods of high intensity construction work

during the daytime that could cause a disturbance to nearby sensitive receptors.

As a consequence of the limitation of EPA Publication 1254, it is proposed that other supporting

documents also be considered when determining noise management methods and

environmental performance requirements for the construction phase of the project.

It is proposed that the evening time criteria for the project be based on the “background

+ 10 dB(A)” rule (“background +5 dB(A)” after 18 months of construction) and the night time

criterion be based on the “background +5 dB(A)” rule as per EPA Publication 1254 (refer Table 19).

Background noise monitoring has been completed in multiple locations around the subject area

(refer Section 6.2). In calculating the evening and night time criteria it has been assumed that an

average dwelling provides about 15 dB(A) attenuation with windows partially open (WHO

Guidelines for Community Noise, 1999) and construction noise must be 10 dB(A) below the

internal level for it to be considered inaudible.

Given long term background noise monitoring was performed at two locations close to northern

and southern boundaries of the proposed development, a group approach to noise receivers

has been implemented. It is assumed that the North (including North West) Group of noise

receivers has similar background noise levels as the Frank Lodge Scenic Lookout monitoring

location and the South (including South West) Group has background noise similar to the

Dutton Way monitoring location.


Construction noise limits for the evening time and night time calculated for the two receiver

groups are summarised in Table 20. It can be seen that for construction activities performed

after 18 months of construction, the evening time criteria are equivalent to the night time limits.

In the absence of clear guidance in Victoria on acceptable construction day time limits, the NSW

Interim Construction Noise Guidelines 2009 have been adopted for this project. The NSW

document recommends that 75 dB(A) criterion should be met to avoid the situation when

residences in the adjacent area are highly affected by noise. Taking into account the scheduled

long duration of construction works, it is proposed that this limit be adopted for day time works.

Table 20 Calculated construction noise limits

Receiver Group Night limit, dB(A)

Evening Limit, dB(A)

Evening Limit after 18 months, dB(A)

Day time limit, dB(A)

North 45 50 45 75*

South 44 49 44 75*

* NSW Interim Construction Noise Guidelines 2009

7.2 Vibration criteria

EPA Publication 480 “Environmental guidelines for major construction sites” recommends that

potential vibration impact will be assessed if construction activities are planned closer than 50 m

from vibration sensitive buildings.

Separation distances for many sensitive receivers are generally greater than 50 m. Therefore,

vibration impacts are not expected to be significant for construction activities performed on the

site itself.

The guidelines below are mainly relevant to construction activities planned close to the southern

boundary of the site and pipe works outside of the plant area, where trenching, pipe laying and

associated works are planned to be close to residential houses.

7.2.1 Damage to buildings and structures

There are two international standards that are recommended for assessing the potential for

vibration damage from construction works:

DIN 4150, Structural Vibration – Part 3: Effects of vibrations on structures (1999)

BS 7385: Evaluation and Measurement for Vibration in Buildings Part 2 (BS 7385)

Figure 19 presents a comparison of the recommended vibration levels from DIN 4150 and

BS 7385. The two standards differ in their functionality. As opposed the “minimal risk of

cosmetic damage” approach adopted in BS 7385 (95% probability of no effect), the “safe limits”

given in DIN 4150 are the levels up to which no damage due to vibration effects has been

observed for the particular class of building. “Damage” defined by DIN 4150 is intended to

include even minor non-structural effects such as superficial cracking in cement render, the

enlargement of cracks already present, and the separation of partitions or intermediate walls

from load bearing walls.


Figure 19 Comparison of vibration criteria in accordance with different

standards

DIN 4150 represents a lower risk of building damage and is recommended for use on this

project. Structural damage criteria are summarised in Table 21. The majority of buildings

surrounding the site which may potentially be affected by construction activities fall into Group 2

of buildings as defined in Table 21. Therefore, these vibration criteria have been adopted as the

baseline vibration limits for construction of the project.

Table 21 Construction and demolition recommendations: DIN 4150

Group Type of structure

Vibration velocity (PPV) in mm/s

At foundation at a frequency of(1) Vibration at horizontal plane of highest floor (all frequencies) < 10 Hz

10 Hz – 50 Hz

50 Hz – 100 Hz

1

Buildings used for commercial purposes, industrial buildings and buildings of similar design

20 20 to 40 40 to 50 40

2 Dwellings and buildings of similar design and/or occupancy

5 5 to 15 15 to 20 15

3

Structures that because of their particular sensitivity to vibration, do not correspond to those listed in Lines 1 or 2 and have intrinsic value (e.g. heritage-listed)

3 3 to 8 8 to 10 8

Note: 1. For frequencies above 100 Hz, the higher values in the 50 Hz to 100 Hz column should be used.


7.2.2 Damage to buried pipework

DIN 4150 provides target vibration levels to minimise damage to buried pipework for short-term

vibration as summarised in Table 22. Very brittle pipes, such as cast iron, may require specific

consideration. In all cases, where the owner of the asset has specific requirements, these take

priority and should not be exceeded.

Table 22 Short term vibration on pipework (peak component level mm/s)

Pipe material Guideline value on pipe (mm/s)

Steel (including welded pipes) 100

Clay, concrete, reinforced concrete, pre-stressed concrete, metal (with/without flanges)

80

Masonry, plastic 50

Notes: 1. Refer to the standard in all situations

2. Long term exposure may warrant a reduction in the guideline value by 50%

3. Pipework assumed to be in god condition and laid with current technology

7.2.3 Human comfort vibration criteria

Intermittent vibration

Humans are generally sensitive to vibration. They can detect vibration levels which are well

below those causing any risk of damage to a building or its content. The actual perception of

motion or vibration may not, in itself, be disturbing or annoying. An individual’s response to that

perception, and whether the vibration is ‘normal’ or ‘abnormal’, depends very strongly on

previous experience and expectations, and on other connotations associated with the perceived

source of the vibration. For example, the vibration that a person responds to as ‘normal’ in a car,

bus or train is considerably higher than what is perceived as ‘normal’ in a shop, office or

dwelling.

The degree of perception for humans in terms of peak particle velocity (PPV) is suggested by

the vibration level categories given in BS 5228-2:2009, as shown in Table 23.

Table 23 Guidance on effects of vibration levels (BS 5228.2)

Approximate vibration level, PPV

Typical degree of perception

0.14 mm/s Vibration might be just perceptible in the most sensitive situations for most vibration frequencies associated with construction. At lower frequencies, people are less sensitive to vibration.

0.3 mm/s Vibration might be just perceptible in residential environments.

1.0 mm/s It is likely that vibration of this level in residential environments will cause complaint, but can be tolerated if prior warning and explanation has been given to residents.

10 mm/s Vibration is likely to be intolerable for any more than a very brief exposure to this level.


Based on Table 23, the human response to vibration could be summarised as:

A vibration level in the range between 0.14 mm/s to 0.3 mm/s would generate a low

probability of an adverse comment or complaints from residents.

A vibration level in the range between 0.3 mm/s to 1 mm/s would generate the possibility

of adverse comment or complaints from residents.

A vibration level greater than 1 mm/s would likely cause adverse comment or complaint.

For intermittent construction activities a PPV criterion of 0.3 mm/s is recommended, particularly

if they are scheduled for night time.

7.2.4 Human comfort vibration criteria

The Commonwealth or Victorian Governments do not have specific guidelines or criteria that

relate specifically to human comfort from vibration from construction sites. The NSW EPA’s

Assessing Vibration: a technical guideline (2006) provides guideline values for continuous,

transient and intermittent events that are based on a Vibration Dose Value (VDV) rather than a

continuous vibration level. The VDV is dependent upon the level and duration of the vibration

event, as well as the number of events occurring during the daytime or night-time period. The

VDVs recommended in the guideline for vibration of an intermittent nature are presented in the

British Standard 6472 (1992) Guide to evaluation of human exposure to vibration in buildings

(updated in 2008), which nominates criteria for various categories of disturbance, the most

stringent of which are the levels of building vibration associated with a low probability of adverse

comment from occupants. The vibration criteria are summarised in Table 24 as VDV criteria. It

is recommended to adopt night criteria below VDV 0.2 m/s1.75 for night time works and 0.4 for

evening and day time works to reduce the probability of adverse comments from residents.

Table 24 Vibration Dose Values (m/s1.75

) above which various degrees of

adverse comment may be expected in residential buildings

Location Low Probability of Adverse Comment

Adverse Comment Possible

Adverse Comment Probable

Residential buildings - 16 hour day 0.2 to 0.4 0.4 to 0.8 0.8 to 1.6

Residential buildings - 8 hour night 0.1 to 0.2 0.2 to 0.4 0.4 to 0.8

* The above target levels apply for both the vertical and lateral directions, provided appropriate weightings are used

7.3 Modelling of construction noise impact

7.3.1 Simplified methods for calculation

Using Sound Power levels found in the Australian Standard AS2436:2010 ‘Guide to Noise and

Vibration Control on Construction, Demolition and Maintenance Sites’ (Standards Australia,

2010), construction noise as a sound pressure level can be estimated using the distance

attenuation relationship as described in the book “Engineering Noise Control: Theory and

practice” by Bies, D.A and Hansen, C.H. 2003, as follows:

𝑆𝑃𝐿 𝑜𝑟 𝐿𝑝 = 𝑆𝑊𝐿 − 20 𝐿𝑜𝑔(𝑑) + 10 𝐿𝑜𝑔(𝑄) − 11 [𝑑𝐵],

where:

SPL = Sound pressure level at the distance d from the source

SWL = Sound power level of the source

d = Distance (m) between source and receiver

Q = Directivity index (two for hemispherical propagation)


Propagation calculations take into account sound intensity losses due to hemispherical

spreading, but additional minor losses such as atmospheric absorption, directivity, ground

absorption and shielding are ignored in the calculations. As a result of this and the limited

detailed information at this stage about construction methodologies the potential increase in

noise levels due to atmospheric conditions were not allowed for in the calculations.

In addition, effects due to atmospheric conditions and variability in noise level predictions due to

meteorological influences are likely to only become apparent at distances greater than 100 m

(Bies, 2003). Generally, the greatest construction noise and vibration impacts are expected at

distances less than 100 m. The predicted noise levels at various distances from the noise

source are shown in Appendix D. These indicative distances can be used for controlling noise

from different types of plant and equipment.

7.3.2 Modelling scenarios for construction noise impact

In discussion with Yumbah and the EPA, the following construction works scenarios for the

project have been identified as having the greatest potential for noise impacts on surrounding

sensitive receivers by virtue of the sound pressure levels expected to be emitted and/or their

proximity to sensitive receivers:

1. Suction Pipe Easement “A” - South West of Main Pump House, trenching

2. Suction Pipe Easement “A” - South West of Main Pump House, pipe laying

3. Outlet Pipe Easement “CE” - Central Easement NO.3, excavating

4. Outlet Pipe Easement “CE” - Central Easement NO.3, pipe laying

5. Pump House Main Pump House Construction, excavating

6. Pump House - Main Pump House Construction, foundation concrete pour

7. Sedimentation ponds and culverts - Sediment pond at middle of the south boundary -

Excavation of culvert and pond

8. Sedimentation ponds and culverts - Sediment pond - middle of the south boundary -

concrete pour of culvert and pond (right hand)

9 Grow out Phase Three - Grow out area, middle of the south boundary – concrete pour of

western-most module

Further details of the modelling scenarios, including modelling assumptions, are presented in

Appendix E.

It should be noted that not all of the construction activities and methods have presently been

finalised. For example, direction drilling may be implemented instead of trenching for the laying

of pipes. Noise emissions associated with trenching activities are expected to be higher than

directional drilling and therefore the scenarios modelled based on trenching represent a worse-

case option.

7.3.3 Predicted noise levels

Each of these scenarios was modelled using the ISO-9613 noise prediction algorithm. The

algorithm was developed for generic downwind conditions. The construction equipment and

trucks are considered as point noise sources operated simultaneously. The number of trucks

entering/leaving the site during the particular timeframe of the construction work activity is

considered where important.


The results of the modelling predictions are shown in Table 25. Corresponding noise contours

are represented in Appendix F. Conclusions on whether the recommended noise criteria are

achieved are summarised in Appendix G.

From Table 25 it is seen that the predicted noise levels frequently exceed the recommended

night time and evening time criteria, while the adopted day time criteria of 75 dB(A) is

comfortably met practically for all modelled scenarios without considering any noise mitigation

measures.

Only Scenario 4, where pipe works are to be undertaken close to receivers 11 and 12, shows

potential for marginal exceedance of the non-mandatory day time criterion of 75 dB(A). It is not

expected that the construction activities associated with this scenario will be performed for a

prolonged period of time.

Noise and vibration impacts can be managed by implementing general noise control practices

or specific noise mitigation solutions if necessary. Vibration impacts can be managed by

keeping safe distances between equipment and structures as described in the following

sections.

Table 25 Predicted construction noise levels for modelled scenarios, dB(A)

Sensitive Receiver

Scenario 1

Scenario 2

Scenario 3

Scenario 4

Scenario 5

Scenario 6

Scenario 7

Scenario 8

Scenario 9

R1 66 69 46 47 63 51 42 32 36

R2 60 63 51 53 44 33 49 37 46

R3 52 54 51 51 41 30 51 40 47

R4 52 54 49 48 42 29 51 40 49

R5 52 54 42 46 41 30 41 33 50

R6 54 56 51 55 39 29 52 41 52

R7 51 53 54 56 38 27 51 41 51

R8 47 49 60 63 35 25 56 45 53

R9 49 51 62 62 36 26 57 47 55

R10 51 52 65 64 36 26 58 48 52

R11 49 51 74 76 35 26 62 52 53

R12 47 48 74 78 35 26 66 55 48

R13 48 50 69 74 35 26 67 56 49

R14 49 51 67 71 38 28 68 57 47

R15 42 43 56 56 31 22 65 54 46

R16 48 50 62 62 37 27 65 54 46

R17 45 47 51 50 35 26 49 41 37

R18 37 38 37 40 27 17 39 32 31

R19 33 33 36 39 26 16 45 36 35

R20 40 41 44 46 29 18 46 35 35

R21 39 41 44 48 29 18 45 35 34

R22 39 40 43 46 29 18 44 35 34


Sensitive Receiver

Scenario 1

Scenario 2

Scenario 3

Scenario 4

Scenario 5

Scenario 6

Scenario 7

Scenario 8

Scenario 9

R23 38 40 42 46 28 18 43 34 33

R24 38 39 42 45 28 18 42 33 33

R25 38 39 42 46 28 18 42 33 32

R26 37 39 42 46 29 18 41 33 33

R27 37 38 41 45 29 19 41 32 31

R28 37 38 39 43 26 15 41 32 31

R29 36 37 38 41 25 14 39 30 29

R30 36 38 40 44 29 19 40 32 31

R31 35 35 36 38 29 19 39 31 31

R32 35 37 39 44 31 20 38 29 30

R33 37 38 44 47 33 23 43 34 33

R34 40 41 41 44 37 25 40 32 33

R35 42 43 47 50 42 31 46 37 38

R36 45 47 46 50 45 34 44 35 38

R37 43 45 42 46 41 29 42 33 35

R38 44 46 39 43 41 31 38 30 32

R39 44 45 38 42 39 27 37 29 31

R40 45 47 38 41 44 32 36 28 30

R41 46 48 41 45 43 32 39 29 32

R42 49 51 41 43 45 33 39 30 32

7.4 Noise and vibration impact management

The results of the construction noise assessment indicate that construction noise is not

expected to be excessive for day time activities. There is a potential for a marginal exceedance

of non-mandatory day time noise criteria for piping works performed close to residential houses

(Western and Central easements). This may be verified by periodic noise and/or vibration

monitoring during relevant construction phases. If the exceedance of the adopted noise criteria

is considered to be excessive, the constructor may choose to implement specific noise

mitigation measures in addition to the typical ones outlined below.

7.4.1 Construction management measures

The following measures should be taken into consideration during the construction of the

project. A Construction Environmental Management Plan (CEMP) should be developed for each

construction phase of the project and should include the following measures, as a minimum:

Justification for work that is likely to be undertaken outside of the standard hours for

construction.

Details and the duration of the activities likely to cause noise emissions that may exceed

the recommended project noise criteria.


Details clearly demonstrating how site activity will comply with Environmental Guidelines for

Major Construction Sites, EPA Publication 480.

Documented complaint response procedures and how the procedures will be implemented.

Documentation demonstrating that all occupants were provided with advice on dates, times

and nature of any potentially noisy and disruptive activity including measures proposed to

mitigate such.

Name of the onsite person who will be responsible for implementing the operational/staged

CEMP.

7.4.2 General noise mitigation measures

In addition, the following construction noise mitigation measures could be implemented:

The noisiest works should be performed within the standard working hours.

Review available fixed and mobile equipment fleet and prefer more recent and silenced

equipment whenever possible. All equipment used on site should be in good condition and

good working order and machines found to produce excessive noise compared to industry

normal standard should be removed from the site or stood down until repairs or

modifications can be made.

Plan to use equipment which is fit for the required tasks in terms of power requirements.

All engine covers should be kept closed while equipment is operating.

As far as possible, material drop heights into or out of trucks should be minimised.

Broadband reversing alarms (audible movement alarms) should be used for all site

equipment, subject to meeting occupational health and safety requirements and reversing

should be minimised; All combustion engine plant, such as generators, compressors and

welders, should be checked to ensure they produce minimal noise with particular attention

to residential grade exhaust silencers.

Vehicles should be kept properly serviced and fitted with appropriate mufflers. The use of

exhaust brakes should be avoided, where practicable.

Where practical, machines should be operated at low speed or power and should be

switched off when not being used rather than left idling for prolonged periods.

Impact wrenches should be used sparingly with hand tools or quiet hydraulic torque units

preferred.

Haul roads will be kept smooth and free of potholes and bumps.

Mobile noise barriers should be used where higher noise impact is predicted.

7.4.3 General work practices

Activities performed by personnel at the construction site should comply with noise

management rules. All site workers should be aware of the potential for noise impacts and

encouraged to take practical and reasonable measures to minimise the impact during the

course of their activities, including:

Avoiding the use of loud radios.

Avoiding shouting and slamming doors.

Where practical, machines should be operated at low speed or power and switched off

when not being used rather than left idling for prolonged periods.


Informing truck drivers of designated vehicle routes, parking locations and delivery hours.

Avoiding metal to metal contact on material.

Closing engine covers while equipment is operating.

7.4.4 Complaint management

A complaint system should be implemented and include the following measures as relevant:

Establish a community liaison phone number and permanent site contact number so that

noise related complaints can be received and addressed in a timely manner;

Determine whether any unusual activities were taking place at the time of the complaint that

may have generated higher noise levels than usual;

If noise levels are excessive implement further management measures;

On receipt of a noise and/or vibration complaint:

– A written response to a complaint will be provided within five days, including any

outcomes and management measures.

– An email response to an electronic complaint will be provided within two days if the

complaint cannot be resolved by an initial response.

7.4.1 Specific noise mitigation measures

Results of the construction noise modelling show that noise impact may be relatively high at

dwellings located close to the zones of projected pipe works. Therefore, the contactor may

choose to implement additional noise mitigation measures such as acoustic barriers or

enclosures.

Acoustical efficiency of some possible mitigation measures can be found in Appendix H. It

should be noted that actual attenuation of implemented measures depends on a number of

factors and will likely be in line with the reductions presented in Table 26.

Houses where noise impacts are predicted to marginally exceed the recommended limits

correspond to modelled Scenario 4. It is recommended that temporary sound barriers be

installed prior to the commencement of the Scenario 4 works and in other situations where pipe

works come close to residential areas.

The acoustic efficiency of the barrier solutions depends on the correct installation of the noise

mitigation measures. It is recommended that specialised acoustic barriers be used (similar to

Appendix H). Assembly of the barriers or partial enclosures should be performed carefully. It

should exclude gaps at the bottom and sides of the panels. It is recommended that “U” shape

configuration of the barriers be used whenever it is possible. Partial enclosures (with top

coverage) should be used in areas where high residual impact is predicted.

Other specific noise mitigation measures may include:

Mobile barriers that can be installed along the work area and transported as the work

progresses

Partial enclosures of working areas

Full mobile enclosures (if practicable)


Table 26 Typical attenuations for source to receptor noise control methods

Control by Nominal noise reduction possible, in total A-weighted sound pressure level, dB(A)

Distance Approximately 6 for each doubling of distance

Screening Normally 5 to 10, maximum of 15

Enclosure Normally 15 to 25, maximum of 50

Notification letters should be provided to affected residents prior to the commencement of works

adjacent to their properties and should include information on:

The date of the noise works

The expected duration of the noisiest activities

The use and provision of individual protective measures such as earplugs (for short

duration impacts of one to two nights only and on a case-by case basis)

7.4.2 Vibration impact management

It is understood that it will not be always possible to perform the intended construction work

activities at substantial distance from affected structures. Nonetheless, it is recommended to

reference the safe separation distances suggested in the Construction Noise Strategy

(Transport for NSW, 2017) as a guide. The distances are summarised in Table 27.

The safe working distances for building damage should be complied with where practical. The

distances are noted as being indicative and would vary depending on the particular item of plant

proposed to be employed and local geotechnical conditions. They apply to addressing the risk

of cosmetic (minor, easily reparable) damage of typical buildings under typical geotechnical

conditions.

Where vibration intensive works are required to be undertaken within the specified safe working

distances, vibration monitoring should be undertaken to ensure acceptable levels of vibration

are satisfied. The required locations for vibration intensive equipment should be reviewed during

detailed design to account for finalised information relating to the ground propagation

characteristics, equipment type and specific works location.

In relation to human comfort, the safe working distances relate to continuous vibration. For most

construction activities, vibration emissions are intermittent in nature and for this reason, higher

vibration levels, occurring over shorter periods are allowed.

Table 27 Recommended safe working distances for vibration intensive plant

Plant Item Rating/Description

Safe Working Distance

Cosmetic Damage (7.5 mm/s)

Human Response (NSW EPA Vibration Guideline)

Vibratory Roller

< 50 kN (Typically 1-2t) 5 m 15 m to 20 m

< 100 kN (Typically 2-4t) 6 m 20 m

< 200 kN (Typically 4-6t) 12 m 40 m

< 300 kN (Typically 7-13t) ** 15 m 100 m

> 300 kN (Typically 13-18t) 20 m 100 m

> 300 kN (Typically > 18t) * 25 m 100 m


Plant Item Rating/Description

Safe Working Distance

Cosmetic Damage (7.5 mm/s)

Human Response (NSW EPA Vibration Guideline)

Small Hydraulic Hammer

300 kg - 5 to 12t excavator 2 m 7 m

Medium Hydraulic Hammer

900 kg - 12 to 18t excavator ** 7 m 23 m

Large Hydraulic Hammer

1600 kg - 18 to 34t excavator ** 23 m 73 m

Vibratory Pile Driver

Sheet piles 2 m to 20 m 20 m

Pile Boring < 800 mm 2 m (nominal) 4 m

Jackhammer Hand held 1 m (nominal) Avoid contact with structure


8. Conclusion

The conclusions reached in this assessment are summarised in the following sections.

This report is subject to, and must be read in conjunction with, the limitations set out in section 1.3

and the assumptions and qualifications contained throughout the Report.

8.1 Odour assessment

No significant odour was noted onsite during the site visit at the existing Narrawong

facility, with only very minor odour noted at the mortalities bin, which dissipated within 2-3

metres from the bin area. No significant odour was noted at the lagoons with the

exception of odour from water fowl frequenting the lagoons. No discernible odour was

noted emanating from any of the grow out sheds.

Mortality management will be greatly improved at the new Nyamat facility with all

mortalities being collected on a daily basis and placed in freezers inside the Abalone

Mortalities and Storage facility. Once freezers are nearing full, abalone mortalities will be

transported offsite for disposal at either the local municipal landfill or a suitable rendering

facility. Management of mortalities in this manner is expected to reduce any odour from

mortalities significantly to the point where it is expected to be insignificant onsite and not

noticeable beyond the property boundary.

Bird management will be greatly improved at the new Nyamat facility with all ponds and

retention basins being covered in a bird mesh, preventing birds from settling onsite at

these locations. Management of birds in this manner is expected to reduce any odour

from faecal defecation significantly to the point where it is expected to be no more than

minor onsite and not noticeable beyond the property boundary to any degree other than

what seabirds are already contributing to the beach front location.

The meteorology for the area demonstrates there are very few occurrences of low winds

and stable meteorology, as would be expected due to the site’s coastal location. Hence,

good air flow and mixing will aid in preventing any build-up of odours occurring at the site

should an upset condition occur, such as significant sudden abalone population reduction

or some other phenomena.

There is no default odour buffer for land based aquaculture or abalone farms under the

table to Clause 52.10 of the VPS or the EPA guideline 1518.

8.2 Operational noise assessment

The strictest noise criteria required to be achieved at a nearest sensitive receiver is the

night time SEPP-N1 criteria of 39 dB LAeq for sensitive receivers R1 to R19 along Dutton

Way. All other receivers must meet 41 dB LAeq during the night time period under the

NIRV criteria.

Sensitive receiver locations along Dutton Way are predicted to comply with the day,

evening and night time criteria under the SEPP-N1 assuming that the required noise

mitigation measures specified in Section 8.5 are implemented.

All rural receivers under the NIRV are predicted to comply with the day, evening and night

time criteria following mitigation.

Predicted noise levels when the emergency generator and emergency pump stations are

in operation are predicted to comply with the day, evening and night time criteria following

mitigation as described in Section 8.5.


8.3 Construction noise assessment

Assessment of construction noise from the site shows that works performed during the

day time are not predicted to have a detrimental impact on the surrounding sensitive

receivers. Noise levels are predicted not to exceed noise criteria in relevant guidelines

during the evening and night time periods for many modelled scenarios.

Particular construction works (easements for pipe works) performed close to residential

premises may result in marginal exceedance of the non-statutory day time limit. It is

recommended that additional noise mitigation measures outlined in this report, such as

acoustic barriers or enclosures, are implemented, as appropriate.

8.4 Construction vibration assessment

Where works are being undertaken within 50 m of properties there is potential for vibration

from construction activities. In this case, an assessment of the high vibration activities

should be undertaken and notification of the activities and their timing should be provided to

the residents prior to works beginning.

The most likely areas where significant vibration impacts may occur would be during the

construction of intake and discharge piping for the project.

8.5 Required noise mitigation

Operations

The following noise mitigation will be required in order to meet the above predicted compliance

levels.

25 mm thick solid wooden board or equivalent covers to be placed on all external and

internal canals in order to mitigate noise (RW26) from water canals.

Emergency generators are to have primary silencers fitted (RW48) on the exhaust to

ensure no more than 65 dB(A) at 1 m from the exhaust.

Construction

It is recommended that works not be performed during the evening or night periods unless

essential and the general and/or specific noise mitigation measures outlined in this report

are implemented, as appropriate.

It is recommended that the general noise and vibration control measures be implemented

during the project’s four construction phases. If necessary, the specific noise mitigation

measures outlined in this report, such as acoustic barriers or enclosures, should be

implemented for pipe works planned close to residential buildings.

8.6 Additional noise mitigation and considerations

The following additional noise mitigation should be considered to further reduce onsite possible

operational noise impacts on the surrounding community:

Extending the earthen bund along Dutton Way from the pump station or creating isolated

bunds around the emergency pump sheds and sediment pump sheds.

Review selection of roofing materials on the emergency pump sheds and the sediment

pump sheds.

Consider relocating the sediment pumps and emergency pumps in individual bunkers down

at the main pump house location. Care should be taken about the final choice of equipment

to avoid potential audibility of noise characters audible at the affected receivers. This is

especially relevant to potential tone audibility that may evoke a substantial adjustment

applied to measured levels.


9. Bibliography

Australia, S. (1997). Acoustics - Description and measurement of environmental noise.

Australian Standard AS 1055.2:1997 - Acoustics - Description and measurement of

environmental noise. NSW, Australia: Standards Australia

Bailey, D. T. (2000). Meteorological Monitoring Guidance for Regulatory Modelling Applications

Report No. EPA-454\R-99-005. US EPA - United States Government

Bies, D. a. (2003). Engineering Noise Control : Theory and practice. Oxon: Spon Press

Department of Primary Industries. (2005 (September)). Planning Guidelines for Land Based

Aquaculture in Victoria. Fisheries Victoria Report Series No.21. Melbourne: Department of

Primary Industries

EPA Victoria. (1990, July). Recommended Buffer Distances for Industrial residual Air Emissions,

Publication AQ 2/86. Melbourne: EPA Victoria

EPA Victoria. (2008). Noise Control Guidelines. Publication 1254. Victoria: Environment

Protection Authority Victoria

EPA Victoria. (2011). Noise from Industry in Regional Victoria (NIRV) (EPA - Publication 1411).

Victoria: EPA Victoria

EPA Victoria. (2013, March). Recommended Separation Distances For Industrial Residual Air

Emissions - Publication number 1518. Melbourne: EPA Victoria

International Standards (ISO). (1996). Acoustics – Descriptions, measurement and assessment

of environmental noise. International Standards

Standards Australia. (2010). AS2436:2010 - Guide to Noise and Vibration Control on

Construction, Demolition and Maintenance Sites. Standards Australia

Victorian Government. (1989, May 16). State Environment Protection Policy (Control of Noise

from Commerce, Industry and Trade) No. N-1. Victorian Government Gazette, Special, No S31,

pp. 1-19

Victorian Government. (1989). State Environment Protection Policy (Control of Noise from

Commerce, Industry and Trade) No. N-1 (SEPP N-1). Melbourne: Environment Protection

Authority Victoria

GHD | Report for Yumbah Aquaculture Ltd - Yumbah Aquaculture Planning & Works Approval, 3135653

Appendices


Appendix A – Frank Lodge scenic lookout

Daily logger charts


Appendix B – Dutton Way

Daily logger charts


Appendix C – Site plans

Elevation Drawings for the Abalone Farm


Appendix D – Typical construction plant and equipment noise levels

Typical construction plant and equipment noise levels at various distances from source


Source

Sound Power Level

dB(A)

Sound Pressure Levels dB(A) at Various Distances (m)

15 m

80 m

100 m

200 m

500 m

1000 m

2000 m

4000 m

8000 m

10000 m

Asphalt Paver 108 76 62 60 54 46 40 34 28 22 20

Asphalt Rotomill 111 79 65 63 57 49 43 37 31 25 23

Backhoe with Auger 106 74 60 58 52 44 38 32 26 20 18

Bulldozer 108 76 62 60 54 46 40 34 28 22 20

Compactor 113 81 67 65 59 51 45 39 33 27 25

Concrete Pump Truck 108 76 62 60 54 46 40 34 28 22 20

Concrete Saw 117 85 71 69 63 55 49 43 37 31 29

Crane (Mobile) 104 72 58 56 50 42 36 30 24 18 16

Excavator 107 75 61 59 53 45 39 33 27 21 19

Front End Loader 113 81 67 65 59 51 45 39 33 27 25

Generator (Diesel) 99 67 53 51 45 37 31 25 19 13 11

Grader 110 78 64 62 56 48 42 36 30 24 22

Hand Tools (Pneumatic)

116 84 70 68 62 54 48 42 36 30 28

Jack Hammers 121 89 75 73 67 59 53 47 41 35 33

Piling (bored) 111 79 65 63 57 49 43 37 31 25 23

Piling (Impact Sheet)

(Lmax) 137

105 91 89 83 75 69 63 57 51 49

Roller (Vibratory) 108 76 62 60 54 46 40 34 28 22 20

Truck (>20 Tonne) 107 75 61 59 53 45 39 33 27 21 19

Truck (Dump) 117 85 71 69 63 55 49 43 37 31 29

Truck (Water Cart) 107 75 61 59 53 45 39 33 27 21 19

Vehicle (Light Commercial e.g. 4WD)

106 74 60 58 52 44 38 32 26 20 18


Appendix E – Construction noise modelling scenario


Scenario No.

Location on Site Activity Equipment proposed in the Model

Most likely affected premises

1 Suction Pipe Easement “A”

South West of Main Pump House

Trenching Excavator, truck, Vibratory compactor

South West, R1

2 Suction Pipe Easement “A”

South West of Main Pump House

Laying pipes in trenches

Truck, backhoe, welding

South West, R1

3 Outlet Pipe Easement “CE”

Central Easement NO.3

Trenching Excavator, truck, Vibratory compactor

South, R11, R12

4 Outlet Pipe Easement “CE”

Central Easement NO.3

Laying pipes in trenches

Truck, backhoe for pipe placement, welding

South, R11, R12

5 Pump House Main Pump House Construction

Excavation Excavator, truck South West, R1

6 Pump House Main Pump House Construction

Foundation Concrete Pour

2x stationary concrete trucks, four concrete trucks per hour in/out of site, 1 x Concrete float

South West, R1

7

Sedimentation

&

Culverts

Sediment pond, middle of the south boundary

Excavation culvert and pond

Excavator, truck South receivers, R14

8

Sedimentation

&

Culverts

Sediment pond, middle of the south boundary

Concrete Pour culvert and pond (right hand)

2x stationary concrete trucks, 4 concrete trucks per hour in/out of site, 1 x Concrete float

South receivers, R14

9 Growout Phase Three

Grow out area, middle of the south boundary

Concrete Pour Western Most Module

2x stationary concrete trucks, 4 concrete trucks per hour in/out of site, 2 x Concrete floats

South receivers, R14


Appendix F – Construction noise contours for modelling scenario


Appendix G – Meeting recommended construction noise criteria


Receiver Period Scenario

1 Scenario

2 Scenario

3 Scenario

4 Scenario

5 Scenario

6 Scenario

7 Scenario

8 Scenario

9

R1

Night N N N N N N Y Y Y

Evening N N Y Y N N Y Y Y

Evening, 18 months N N N N N N Y Y Y

Day Y Y Y Y Y Y Y Y Y

R2

Night N N N N Y Y N Y N

Evening N N N N Y Y Y Y Y

Evening, 18 months N Y N N N N N N N


R3


Evening N N N N Y Y N Y Y



R4


Evening N N Y Y Y Y N Y Y



R5

Night N N Y N Y Y Y Y N

Evening N N Y Y Y Y Y Y N

Evening, 18 months N N Y N Y Y Y Y N


R6


Evening N N N N Y Y N Y N



R7





R8

Night N N N N Y Y N N N

Evening Y Y N N Y Y N Y N



R9



Evening, 18 months N N N N Y Y N N N


R10





R11


Evening Y N N N Y Y N N N


Day Y Y Y N Y Y Y Y Y

R12


Evening Y Y N N Y Y N N Y


Day Y Y Y N Y Y Y Y Y

R13


Evening Y N N N Y Y N N N

Evening, 18 months N N N N Y Y N N N


R14


Evening Y N N N Y Y N N Y



R15

Night Y Y N N Y Y N N N

Evening Y Y N N Y Y N N Y

Evening, 18 months Y Y N N N N N N N


R16


Evening Y N N N Y Y N N Y



R17 Night N N N N Y Y N Y Y

Evening Y Y N N Y Y Y Y Y



1 Scenario

2 Scenario

3 Scenario

4 Scenario

5 Scenario

6 Scenario

7 Scenario

8 Scenario

9

Evening, 18 months N N N N Y Y N Y Y


R18

Night Y Y Y Y Y Y Y Y Y

Evening Y Y Y Y Y Y Y Y Y



R19

Night Y Y Y Y Y Y N Y Y




R20

Night Y Y Y N Y Y N Y Y




R21



Evening, 18 months Y Y Y N Y Y N Y Y


R22





R23

Night Y Y Y N Y Y Y Y Y




R24





R25



Evening, 18 months Y Y Y N Y Y Y Y Y


R26





R27





R28



Evening, 18 months Y Y Y Y Y Y Y Y Y


R29



Evening, 18 months Y Y Y Y Y Y Y Y Y


R30





R31





R32





R33





R34 Night Y Y Y Y Y Y Y Y Y




1 Scenario

2 Scenario

3 Scenario

4 Scenario

5 Scenario

6 Scenario

7 Scenario

8 Scenario

9



R35

Night Y Y N N Y Y N Y Y




R36

Night Y N N N N Y Y Y Y




R37





R38

Night Y N Y Y Y Y Y Y Y




R39





R40





R41

Night N N Y Y Y Y Y Y Y


Evening, 18 months N N Y Y Y Y Y Y Y


R42

Night N N Y Y Y Y Y Y Y

Evening Y N Y Y Y Y Y Y Y




Appendix H – Acoustic attenuation data for mitigation of construction noise


Product Rw, dB NRC

Sonic Panels & Walls

225 24 0.8

V50 31 1

V100 37 1.1

Super Panel 47 1.0

Sonic Curtains

6 kg/m^2 30 0.75

4 kg/m^2 27 0.75

Quilt 13-24 0.75

Tent 12-24 N/A

Sheet 2 mm 17 N/A

Strips 3 mm 19 N/A

Strips 4 mm 19 N/A

GHD

180 Lonsdale Street Melbourne VIC 3000 T: 61 3 8687 8000 F: 61 3 8687 8111 E: [email protected]

© GHD 2018

This document is and shall remain the property of GHD. The document may only be used for the purpose for which it was commissioned and in accordance with the Terms of Engagement for the commission. Unauthorised use of this document in any form whatsoever is prohibited.

3135653-25404/https://projects.ghd.com/oc/Victoria/aquacultureparkwaaan/Delivery/Documents/3135653-REP-Rev0-Yumbah Odour and Noise Assessment_Report_26_10_18.docx

Document Status

Revision Author Reviewer Approved for Issue

Name Signature Name Signature Date DRAFT A

10/10/2018

DRAFT B

24/10/2018

0 V Lenchine C McVie M Koller 26/10/2018

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