Operational Noise Assessment Proposed Service Station ......rodneystevensacoustics.com.au K((t@)) Operational Noise Assessment Proposed Service Station 4613 Mitchell Highway, Lucknow

AiWDNEY STEVENS

COUSTICS Acoustic Consultants

Member Australian Acoustical Society

REPORT R180137R1

Revision 5

Operational Noise Assessment Proposed Service Station

4613 Mitchell Highway, Lucknow

PREPARED FOR:

MCHP Architects Suite 5, 38-46 Albany Street

ST LEONARDS NSW 2065

1 May 2020

PO Box 522 Wahroonga NSW 2076 P 02 9943 5057 F 02 9475 1019 [email protected]. au

ABN 78 149 311 455 rodneystevensacoustics.com.au

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Operational Noise Assessment

Proposed Service Station 4613 Mitchell Highway, Lucknow

PREPARED BY

Rodney Stevens Acoustics Pty Ltd Telephone: 6129943 5057 Facsimile 61 2 9475 1019 Email: [email protected] Web: www.rodneystevensacoustics.com.au

DISCLAIMER

Reports produced by Rodney Stevens Acoustics Pty Ltd are prepared for a particular Client's objective and are based on a specific scope, conditions and limitations, as agreed between Rodney Stevens Acoustics and the Client. Information and/or report(s) prepared by Rodney Stevens Acoustics may not be suitable for uses other than the original intended objective. No parties other than the Client should use any information and/or report(s) without first conferring with Rodney Stevens Acoustics.

The information and/or report(s) prepared by Rodney Stevens Acoustics should not be reproduced, presented or reviewed except in full. Before passing on to a third party any information and/or report(s) prepared by Rodney Stevens Acoustics, the Client is to fully inform the third party of the objective and scope and any limitations and conditions, including any other relevant information which applies to the material prepared by Rodney Stevens Acoustics. It is the responsibility of any third party to confirm whether information and/or report(s) prepared for others by Rodney Stevens Acoustics are suitable for their specific objectives.

DOCUMENT CONTROL

Reference Status Date Prepared Checked Authorised

R180137R1 Revision O 26 April 2018 Camilo Castillo

R180137R1

R180137R1

R180137R1

Revision 1

Revision 2

03 May 2018

25May 2018

Camilo Castillo

Camilo Castillo

Revision 3 11 March 2020 Camilo Castillo

R180137R1

R180137R1

Revision 4 ----

Revision 5

3 April 2020

1 April 2020

Camilo Castillo

Camilo Castillo

Rodney Stevens Rodney Stevens






Rodney Stevens Acoustics Report Number R180137R1 Revision 5

Operation Noise Emission Assessment 4613 Mitchell Highway, Lucknow

MCHP Architects Page 2

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2

INTRODUCTION

PROJECT DESCRIPTION

2.1 Site Location

2.2 Proposed Development

3 BASELINE NOISE SURVEY

3.1 Unattended Noise Monitoring

3.2 Data Processing 3.2.1 Noise Emission (Noise Policy for Industry)

4 NOISE GUIDELINES AND CRITERIA

4.1 Operational Noise Project Trigger Noise Levels 4. 1. 1 Intrusiveness Noise Levels 4.1.2 Amenity Noise Levels 4. 1.3 Area Classification 4. 1.4 Project Specific Trigger Noise Levels

4.2 Sleep Disturbance

5 OPERATIONAL NOISE IMPACT

5.1 Service Station Noise Emission 5.1.1 Mechanical Plant Schedule 5.1.2 Modelling Results

6

7

RECOMMENDATIONS

CONCLUSION

4

4

4

4

5

5

5 5

6

6 6 6 6 6

7

7

7 8 8

10

11

Table 3-1 Table 4-1 Table 5-1 Table 5-2

Figure 2-1 Figure 5-1 Figure 6-1

Measured Baseline Noise Levels Corresponding to Defined NPfl Periods Operational Project Trigger Noise Levels Mechanical Plant Schedule Calculated Noise Level Results

5 7 8 9

Site Location Receiver Locations Mitigation Measures

4 9

10




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Rodney Stevens Acoustics Pty Ltd (RSA) has been engaged by MCHP Architects to conduct an acoustic survey for the proposed operational noise and mechanical plant for Development Application (DA) lodgement for the proposed service station located at 4613 Mitchell Highway, Lucknow.

Specific acoustic terminology is used in this report. An explanation of common acoustic terms is provided in Appendix A

2.1 Site Location

The proposed development site is located at 4613 Mitchell Highway, Lucknow. The site is bounded by commercial premises to the north-east and north-west and residential dwellings to the north and south. The site and its surroundings are shown in Figure 2-1.

Figure 2-1 Site Location

Aerial image courtesy of Near Map© 2018

2.2 Proposed Development

The proposal is to demolish the existing service station and construct a new service station with a convenience store.

The floor plans of the proposed residential development are presented in Appendix D.




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3.1 Unattended Noise Monitoring

In order to characterise the existing acoustical environment of the area unattended noise monitoring was conducted between Monday 16" April and Friday 23" April 2018 at the logging location shown in Figure 2-1.

The noise logger was set up at 4614 Mitchell Highway, Lucknow. This logger provides the baseline background noise environs.

Logger location was selected with consideration to other noise sources which may influence readings, security issues for noise monitoring equipment and gaining permission for access from residents and landowners.

Instrumentation for the survey comprised of a RION NL-42 environmental noise logger (serial number 572542) fitted with microphone windshields. Calibration of the logger was checked prior to and following measurements. Drift in calibration did not exceed ±0.5 dB(A). All equipment carried appropriate and current NATA (or manufacturer) calibration certificates. Measured data has been filtered to remove data measured during adverse weather conditions upon consultation with historical weather reports provided by the Bureau of Meteorology (BOM).

The logger determines LA1, LA1o, L-Aso and LAe levels of the ambient noise. LA1, LA1o, LAso are the levels exceeded for 1%, 10% and 90% of the sample time respectively (see Glossary for definitions in Appendix A). Detailed results at the monitoring location are presented in graphical format in Appendix B. The graphs show measured values of Lr, LA1o, LAoo and Lea for each 15-minute monitoring period.

3.2 Data Processing

3.2.1 Noise Emission (Noise Policy for Industry)

In order to establish the construction noise criteria, the data obtained from the noise logger has been processed in accordance with the procedures contained in the NSW Environmental Protection Authority's (EPA) Noise Policy for Industry (NPfl, 2017) to establish representative noise levels that can be expected in the residential vicinity of the site. The monitored baseline noise levels are detailed in Table 3-1.

Table 3-1 Measured Baseline Noise Levels Corresponding to Defined NPfl Periods

Measured Noise Level -- dB(A) re 20 µPa

Location Measurement Descriptor Daytime

7 am -6 pm Evening

6 pm -- 10 pm Night-time

10 pm -- 7 am

Loggerat4614 Mitchell Highway

Lea 53

RBL (Background) 42

50 50

33 23

Notes: All values expressed as dB(A) and rounded to nearest 1 dB(A);

LA Equivalent continuous (energy average) A-weighted sound pressure level. It is defined as the steady sound level that contains

the same amount of acoustic energy as the corresponding time-varying sound.

dAso Noise level present for 90% of time (background level). The average minimum background sound level (in the absence of the

source under consideration).




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4.1 Operational Noise Project Trigger Noise Levels

Responsibility for the control of noise emissions in New South Wales is vested in Local Government and the EPA. The EPA oversees the Noise Policy for Industry (NPfl) October 2017 which provides a framework and process for deriving project trigger noise level. The NPfl project noise levels for industrial noise sources have two (2) components:

• Controlling the intrusive noise impacts for residents and other sensitive receivers in the short term; and

• Maintaining noise level amenity for particular land uses for residents and sensitive receivers in other land uses.

4. 1.1 Intrusiveness Noise Levels

For assessing intrusiveness, the background noise generally needs to be measured. The intrusiveness noise level essentially means that the equivalent continuous noise level (LAeq) of the source should not be more than 5 dB(A) above the measured Rated Background Level (RBL), over any 15 minute period.

4.1.2 Amenity Noise Levels

The amenity noise level is based on land use and associated activities (and their sensitivity to noise emission). The cumulative effect of noise from industrial sources needs to be considered in assessing the impact. The noise levels relate only to other industrial-type noise sources and do not include road, rail or community noise. The existing noise level from industry is measured.

If it approaches the project trigger noise level value, then noise levels from new industrial-type noise sources, (including air-conditioning mechanical plant) need to be designed so that the cumulative effect does not produce total noise levels that would significantly exceed the project trigger noise level.

4.1.3 Area Classification

The NPfl characterises the "Rural" noise environment as an area with an acoustical environment that:

is dominated by natural sounds, having little or no road traffic noise and generally characterised by low background noise levels.

• Settlement patterns would be typically sparse

The area surrounding the proposed development falls under the "Rural" area classification.

4.1.4 Project Specific Trigger Noise Levels

Having defined the area type, the processed results of the attended noise monitoring have been used to determine project specific project trigger noise level. The intrusive and amenity project trigger noise level for nearby residential premises are presented in Table 4-1. These project trigger noise levels are nominated for the purpose of assessing potential noise impacts from the proposed development.

In this case, the ambient noise environment is not controlled by industrial noise sources and therefore the project amenity noise level are assigned as per Table 2.2 of the NPfl (Recommended Amenity Noise Levels). For each assessment period, the lower (i.e. the more stringent) of the amenity or intrusive project trigger noise level are adopted. These are shown in bold text in Table 4-1.




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Measured Project Trigger Noise Levels

Receiver Time of Day

ANL1

LAeq(15min) RBL2

LA90(15min)

Existing

LAeq(Period)

Intrusive LAeq(15min)

Amenity LAeq(15min)

Day 50 42 ----

Residential Evening 45 33

Night 40 30° -------- ----·---------

53 47 50

50 38 45

50 35 40

Note 1: ANL = "Amenity Noise Level" for residences in Rural Areas

Note 2: RBL = "Rating Background Level".

Note 3: Where the background level is found to be less than 30 dB(A) for the evening and night periods, the rating background noise level is set to 30 dB(A)

4.2 Sleep Disturbance

The service station will be operating 24 hours a day, therefore, Section 2.4 of the NSW Noise Policy for Industry "Maximum noise level event assessment guidance for sleep disturbance or sleep arousal would be applied to assess the proposed works. The NPfl states the following:

The potential for sleep disturbance from maximum noise level events from premises during the night-time period needs to be considered. Sleep disturbance is considered to be both awakenings and disturbance to sleep stages. Where the subject development/premises night-time noise levels at a residential location exceed: • LAeq. 15min 40 dB(A) or the prevailing RBL plus 5 dB, whichever is the greater, and/or • LAFmax 52 dB(A) or the prevailing RBL plus 15 dB, whichever is the greater,

a detailed maximum noise level event assessment should be undertaken.

Sleep disturbance and sleep arousal are subjective responses varying for individuals; with reference to the EPA guidance, potential for internal disturbance from the service station may occur within the night time period.

5.1 Service Station Noise Emission

Operations of various activities within the proposed service centre have the potential to create noise impacts on the surrounding residential and commercial receivers.

• Potential noise emissions representative of each specific activity have been considered and noise predictions have been carried out for the day and night time periods. The following assumptions have been made for this assessment. The development, including buildings and relative heights, has been based on the supplied architectural drawings detailed in Appendix E.

• All noise sensitive receivers have been assessed as single storey buildings with an assumed receiver height of 1.5m above their relative ground.

• The service station will operate 24 hours, 7 days

The model has been based on the combination of all activities when the facility is generating most noise i.e. it's at full capacity (worst case scenario) for day time, two thirds capacity for evening period and one third capacity for the night time period




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• A 1.8 meter high solid fence/barrier has been taken into account.

• Mechanical plant schedules include a Samsung Air Conditioning unit, a Chicago HUSH50 Aluminium Silenced 50L Air Compressor and a retail inflator station

• The air compressor is to be installed within a shed in the southern side of the site

• The air conditioner will be installed on ground level on the northern facade.

• Deliveries, including petrol trucks will occur up to 3 times a week and will not take place during the evening and night time periods.

• The retail inflator's "beep" signal will be disabled during the night time period

5.1.1 Mechanical Plant Schedule

In the absence of a final mechanical plant schedule, RSA has used typical mechanical plants items used in service stations and similar developments. The plant items used for this assessment are presented in table below:

Table 5-1 Mechanical Plant Schedule

Item Model Sound Power Level dB(A)

AC Unit Samsung -AM140KXMDGH/EU 79

Air Compressor HUSH50 79

5.1.2 Modelling Results

Calculations of the expected noise levels at the nearest sensitive receivers are presented in the table below. (Refer to Figure 5-1 for receiver locations).




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Figure 5-1 Receiver Locations

Table 5-2 Calculated Noise Level Results I

R . P . d Calculated Noise C . . C . eceiver 'erioc Le »] riteria Jompliance evel LAea - dB(A)

Day 43 47 Yes

R1 Evening 37 38 Yes

Night 36 35 Yes

Day 27 47 Yes

R2 Evening 23 38 Yes

Night 22 35 Yes

Day 45 47 Yes

R3 Evening 39 38 Yes*

Night 36 35 Yes

Day 45 47 Yes R4

Evening 38 38 Yes




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Night 36 35 Yes

C1 When in Use 43 65 Yes

C2 When in Use 47 65 Yes

We note that an exceedance of 1 dB(A) is generally considered to be acoustically insignificant

The calculated noise levels presented above are below the sleep arousal criteria of LAeq (15minutes) 40dB(A), therefore, no impact on sleep arousal will be expected.

The following figure shows the required mitigation measures that must be implemented, including their location.

Figure 6-1 Mitigation Measures

NEW CONCRETE DRvE wA(«m')

LOT 101 DP 1053642

1 1245m

L----------1

I i1 jl

I I I

I I I I

1 AC Screen -- 1.6m : -....._ 1 High Solid Screen 1 , ; / l

'ii" tnl «.- BOUNDARY 136• 10' 50'"-..~-7_ ?/

----------~ [:] EXISTING CO"4CRETE SLAB __,,,,. >

EXISTING CONCRETE FORECOURT TO

REMAIN

£xsTiG SERVICE, STATION SALES

The mitigation measures shown above must comply with the following requirements

• The air vents in the air compressor enclosure must be reviewed by a suitable acoustic consultant prior to installation

• The doors in the air compressor enclosure must not have any airgaps and door seals must be installed around the perimeter and threshold of the door

• A 1.6m screen must be erected to minimise the noise transmission from the proposed AC unit, the screen must extend at least 1 meter from either side of the AC unit

• The retail inflater's "beep" signal must be disabled during the night time period




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• A 1.8 meter boundary fence must be put in place along the boundaries (refer to Figure 6-1)

RSA has conducted a noise impact assessment for the 24 hour operation of the service station located at 4613 Mitchell Highway, Lucknow. The assessment has comprised the establishment of noise criteria and assesses noise impacts with regard to relevant statutory requirements.

This assessment has addressed the potential direct and cumulative operational noise impacts of the service station. We have assumed the worst case scenario, where the service station is operating at full capacity and found that noise impacts have been predicted to comply with the specific criteria at all receiver locations.

Noise emissions from the operation of the service station including the proposed mechanical plant comply with the criteria as set out in Section 4 of this report.

Approved:-

Rodney Stevens

Manager/Principal




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A-weighted sound pressure

Ambient noise

Community annoyance

Compliance

Cumulative noise level

Extraneous noise

Feasible and reasonable measures

The human ear is not equally sensitive to sound at different frequencies. People are more sensitive to sound in the range of 1 to 4 kHz (1000-- 4000 vibrations per second) and less sensitive to lower and higher frequency sound. During noise measurement an electronic 'A-weighting' frequency filter is applied to the measured sound level dB(A) to account for these sensitivities. Other frequency weightings (B, C and D) are less commonly used. Sound measured without a filter is denoted as linear weighted dB(linear).

The total noise in a given situation, inclusive of all noise source contributions in the near and far field.

Includes noise annoyance due to:

character of the noise (e.g. sound pressure level, tonality, impulsiveness, low-frequency content)

character of the environment (e.g. very quiet suburban, suburban, urban, near industry)

miscellaneous circumstances (e.g. noise avoidance possibilities, cognitive noise, unpleasant associations)

human activity being interrupted (e.g. sleep, communicating, reading, working, listening to radio/TV, recreation).

The process of checking that source noise levels meet with the noise limits in a statutory context.

The total level of noise from all sources.

Noise resulting from activities that are not typical to the area. Atypical activities may include construction, and traffic generated by holiday periods and by special events such as concerts or sporting events. Normal daily traffic is not considered to be extraneous.

Feasibility relates to engineering considerations and what is practical to build; reasonableness relates to the application of judgement in arriving at a decision, taking into account the following factors:

Noise mitigation benefits (amount of noise reduction provided, number of people protected).

Cost of mitigation (cost of mitigation versus benefit provided).

Community views (aesthetic impacts and community wishes).

Noise levels for affected land uses (existing and future levels, and changes in noise levels).




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Impulsiveness

Low frequency

Noise criteria

Noise level (goal)

Noise limits

Performance based goals

Rating Background Level

(RBL)

Receptor

Sleep disturbance

Sound and decibels (dB)

Impulsive noise is noise with a high peak of short duration or a sequence of these peaks. Impulsive noise is also considered annoying.

Noise containing major components in the low-frequency range (20 to 250 Hz) of the frequency spectrum.

The general set of non-mandatory noise levels for protecting against intrusive noise (for example, background noise plus 5 dB) and loss of amenity (e.g. noise levels for various land use).

A noise level that should be adopted for planning purposes as the highest acceptable noise level for the specific area, land use and time of day.

Enforceable noise levels that appear in conditions on consents and licences. The noise limits are based on achievable noise levels, which the proponent has predicted can be met during the environmental assessment. Exceedance of the noise limits can result in the requirement for either the development of noise management plans or legal action.

Goals specified in terms of the outcomes/performance to be achieved, but not in terms of the means of achieving them.

The rating background level is the overall single figure background level representing each day, evening and night time period. The rating background level is the 10 percentile min LAso noise level measured over all day, evening and night time monitoring periods.

The noise-sensitive land use at which noise from a development can be heard.

Awakenings and disturbance of sleep stages.

Sound (or noise) is caused by minute changes in atmospheric pressure that are detected by the human ear. The ratio between the quietest noise audible and that which should cause permanent hearing damage is a million times the change in sound pressure. To simplify this range the sound pressures are logarithmically converted to decibels from a reference level of 2 x 10-5 Pa.

The picture below indicates typical noise levels from common noise sources.




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Jet Engine 2Sm distance) 1AC

.2..=

Sound power Level (SWL)

Sound Pressure Level (SPL)

Statistic noise levels

dB is the abbreviation for decibel - a unit of sound measurement. It is equivalent to 10 times the logarithm (to base 10) of the ratio of a given sound pressure to a reference pressure.

The sound power level of a noise source is the sound energy emitted by the source. Notated as SWL, sound power levels are typically presented in dB(A).

The level of noise, usually expressed as SPL in dB(A), as measured by a standard sound level meter with a pressure microphone. The sound pressure level in dB(A) gives a close indication of the subjective loudness of the noise.

Noise levels varying over time (e.g. community noise, traffic noise, construction noise) are described in terms of the statistical exceedance level.

A hypothetical example of A weighted noise levels over a 15 minute measurement period is indicated in the following figure:

80

-LAAx

< a, TI

t

• 60

TI c " 9 50

40

00 00 05 00 10.00 15.00

Monitoring Period (minutes)

Key descriptors:




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LAmax Maximum recorded noise level.

Threshold

Tonality

LA The noise level exceeded for 1% of the 15 minute interval.

LA1o Noise level present for 10% of the 15 minute interval. Commonly referred to the average maximum noise level.

LAea Equivalent continuous (energy average) A-weighted sound pressure level. It is defined as the steady sound level that contains the same amount of acoustic energy as the corresponding time-varying sound.

LAoo Noise level exceeded for 90% of time (background level). The average minimum background sound level (in the absence of the source under consideration).

The lowest sound pressure level that produces a detectable response (in an instrument/person).

Tonal noise contains one or more prominent tones (and characterised by a distinct frequency components) and is considered more annoying. A 2 to 5 dB(A) penalty is typically applied to noise sources with tonal characteristics




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Ambient Noise Logger


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(((((((( © )) 4613 Mitchell Highway, Lucknow

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Acoustic Research LabSPtyLtd

Sound Level Meter

Level 7 Building 2 423 Pennant Hills Rd Pennant Hills NSW AUSTRALIA 2120 Ph: +61 2 9484 0800 A.B.N. 65 160 399 119 www.acousticresearch.com.au

IEC 61672-3.2013

Calibration Certificate Calibration Number Cl 7323

Client Details Rodney Stevens Acoustics Pty Ltd I Majura Close St Ives Chase NSW 2075

Equipment Tested/ Model Number: Instrument Serial Number: Microphone Serial Number:

Pre-amplifier Serial Number:

Rion NL-42EX 00572542 170370 72880

Pre-Test Atmospheric Conditions Ambient Temperature: 23.4°C

Relative Humidity: 37.2% Barometric Pressure: 99.65kPa

Post-Test Atmospheric Conditions Ambient Temperature: 23.3°C

Relative Humidity: 37.8% Barometric Pressure: 99.52kPa

Calibration Technician : Lucky Jaiswal Calibration Date: 03/07/2017

Approved Signatory :

Secondary Check: Report )ssue Date :

Riley Cooper 04/07/2017

Juan Aguero

Clause and Characteristic Tested R Result 12: Acoustical Sig. tests of a frequency weighting 13: Electrical Sig. tests of frequency weightings 14: frequency and time weightings at I kHz 15: Long Term Stability 16: Level linearity on the reference level range

Pass Pass Pass Pass

17: Level linearity incl. the levd range control 18: Toncburst response 19: C Weighted Peak Sound Level 20: Overload Indication 21: lligh Level Stability

Pass Pass Pass Pass Pass

The sound level meter submitted for testing has successfully comph:tcd lhc dass 2 periodic tests of IEC 61672-3 2006. for the environmental i.:onditions under which the tests were pcrfonncd

However. no general statement or conclusion can be made about conformance of the sound level meter to the full requirements of IEC 61672 1 :2002 bet.:ausc eudencc wa.~ not publicly available. from an independent testing organisation responsible for pattern approvals. to

demonstrate that the model of sound le,·cl meter fully conformed to the requirements in IEC 61672-1 2002 and because the periodic tests of IEC 61672-3.2006 cover only a lin11tcd subset of the specifh:atlons m IEC 61672-1 :2002.

Acoustic Tests JI 511: to 8k/1: /2.5kH: /6k//:

Electrical Tests 3L.5 H- to 211 kif:

+0.16dB ,02dll ,0 2Ydll

+012ad

Lcast Uncertainties of f\1casurcment • Environmental Condnions

Temperature Relative Humidity Bummt'lric Pres.sure

t(I05°C +0 46% +0017Pa

All uncertainties are derived at the 95% confidence level with a coverage factor of 2

NATA

wOb COO4o ACCfll■DnaTION

This calibration certificate is to be read in conjunction with the calihratmn test report.

Acoustic Research Labs Pty Ltd is NATA Accredited Laboratory Number 14172 Accredited for comphanct with ISO/I EC 17025

The results of the 11.!Sts. calibrations and/or measurements induJcJ in this document arc traccahk to Australian/national standards

NATA is a signatory to the ILAC Mutual Recognition Arrangement for the mutual recognition of the equivalence of testing, medical testing, calibration and inspection reports.

PAGE I OF I




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