Duchess Paradise Project Truck Movements Through Derby to ... · Report: 11071876-02B Lloyd George Acoustics Pty Ltd ABN: 79 125 812 544 PO Box 717 Hillarys WA 6923 Offices: Ocean

Transportation Noise Assessment

Prepared For

November 2013

Reference: 11071876-02B

Duchess Paradise Project Truck Movements

Through Derby to and from the Export Facility

GEORGE

LLOYD

Acoustics

Report: 11071876-02B

Lloyd George Acoustics Pty Ltd ABN: 79 125 812 544

PO Box 717 Hillarys WA 6923

Offices: Ocean Reef Hillarys Scarborough Quinns

Phone: Fax:

Email: Mobile:

9300 4188 9300 4199 [email protected]

0439 032 844

9401 7770 9401 7770 [email protected]

0400 414 197

9245 3223 9300 4199 [email protected]

0438 201 071

0412 611 330 9300 4199 [email protected]

0412 611 330

Member of the Association of Australian Acoustical Consultants – (AAAC)

Prepared By: Daniel Lloyd

Position: Project Director

Verified Terry George

Date: 18 November 2013

This report has been prepared in accordance with the scope of services described in the contract or agreement between Lloyd George Acoustics Pty Ltd and the Client. The report relies upon data, surveys, measurements and results taken at or under the particular times and conditions specified herein. Any findings, conclusions or recommendations only apply to the aforementioned circumstances and no greater reliance should be assumed or drawn by the Client. Furthermore, the report has been prepared solely for use by the Client, and Lloyd George Acoustics Pty Ltd accepts no responsibility for its use by other parties.

Lloyd George Acoustics

CONTENTS

1 INTRODUCTION .............................................................................................................. 1

2 CRITERIA ......................................................................................................................... 1

3 METHODOLOGY ............................................................................................................. 1

4 RESULTS ......................................................................................................................... 2

5 ASSESSMENT ................................................................................................................. 5

APPENDICES

A Distance Survey

B Terminology


Reference: 11071876-02B.docx Page 1

1 INTRODUCTION

This report provides an assessment of transport noise associated with the proposed Rey Resources Limited's Duchess Paradise Project port operations in Derby. The port operations consist of utilising the existing Derby Export Facility at the Port of Derby, where the thermal coal product will be stored, loaded onto barges and transferred to anchored ships for export.

The coal product is transported from the mine to the port by trucks. As these trucks are required to travel through the town of Derby, an assessment of the noise impact as a result of truck movements is provided.

Appendix B contains a description of some of the terminology used throughout this report.

2 CRITERIA

There are no legislated noise criteria relating to vehicles travelling along a public road (except for the Australian Design Rules governing noise from individual vehicles, which would not form part of this assessment). The most relevant policies which could only be used as guidance on the expected impact from the trucks travelling to and from the export facility would be the State Planning Policy 5.4 - Road and Rail Transport Noise and Freight Considerations in Land Use Planning (SPP 5.4) and to some extent the draft EPA Statements for EIA No. 14 (Version 3) Road and Rail Transportation Noise (EPA Statement 14). Although, it should be noted that neither of these policies address an increase in road noise levels as a result of a specific project proposal.

Under the SPP 5.4, the Target noise criterion during the night-time period (being the most stringent) is LAeq (Night) 50 dB. If this noise level is achieved, further consideration of noise mitigation measures is not required.

Under EPA Statement 14 a noise level of between LAeq (Night) 41 and 45 dB would be considered as acceptable for residential; a noise of between LAeq (Night) 46 and 50 dB would be considered as conditionally acceptable for residential and an LAeq (Night) of greater than 51 dB would be considered as unacceptable for residential.

It can be seen that the criteria in the EPA Statement 14 is far more stringent than the more widely used SPP 5.4.

3 METHODOLOGY

To predict the noise levels from the truck operations, the measured sound pressure level of a truck moving at approximately 40km/h was used to predict the LAeq noise level of a single truck passing a receiver location. The sound power level used and the resulting passing sound pressure levels are shown in Table 3.1 and Figure 3.1 respectively.



Table 3.1 – Source Sound Power Levels, dB(A)

Description Octave Band Centre Frequency (Hz)

Overall 63 125 250 500 1k 2k 4k 8k

Truck travelling at 40 km/h 84 91 97 101 101 97 92 83 107

Figure 3.1 Sound Pressure Level of Passing Truck in dB(A)

4 RESULTS

As the truck movements are consistent over a 24 hour period, the LAeq (Day) and LAeq (Night) noise level will be the same. Assuming 144 truck movements in 24 hours (72 movements each way), the predicted noise levels at 15 m from the trucks is LAeq (Night) 54 dB. It should be noted that this noise levels would be slightly less in the dual carriageway section of Loch Street, between Elder and Ashley Street, due to the carriageway separation distances. In this section of Loch Street the predicted noise levels are LAeq (Night) 52 dB at 15 m.

From a survey undertaken to determine the distance of houses from the traffic lane (provided in Appendix A), the closest house to the dual carriageway section of Loch Street (north of Ashley Street) is 10m. This corresponds to a predicted noise level of LAeq (Night) 54 dB. South of Ashley Street adjacent to the single carriageway section of Loch Street, the closest noise sensitive premises is 18 m from the traffic, which corresponds to a predicted noise level of LAeq (Night) 53 dB.

These results are shown graphically in Figures 4.1 and 4.2.

30

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1 8 15

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148

155

162

169

176

183

190

197

Soun

d Pressure level dB(A)

Time for truck Passing (secs)

Sound Pressure Level at 15m from Truck

Figure 4.1

Length Scale00 150 300 600 900 1200

m

Duchess Paradise ProjectPredicted Noise from Truck Movements Through DerbyLAeq Noise Level Contours - Full Capacity (144 Truck Movements/24 hours)

GEORGE

LLOYD

A c o u s t i c s

Lloyd George Acousticsby Daniel [email protected](08) 9300 4188

Traffic Noise level LAeq dB

= 40= 45= 50= 55

Traffic Noise level LAeq, day dB

<= 45<= 50> 50

45

45

45

45

45

45

45

45

45

45

50

50

50

50

50

50

50

50

50

50

50

Figure 4.2

Length Scale00 20 40 80 120 160

m

Duchess Paradise ProjectPredicted Noise from Truck Movements Through DerbyLAeq Noise Level Contours - Full Capacity (144 Truck Movements/24 hours)

GEORGE

LLOYD

A c o u s t i c s

Lloyd George Acousticsby Daniel [email protected](08) 9300 4188



5 ASSESSMENT

From Figures 4.1 and 4.2, it can be seen that the predicted LAeq (Day) or LAeq (Night) noise level at the houses adjacent to the truck route through Derby is approximately 50 dB. Under the SPP 5.4, this would be considered acceptable for residential premises without additional noise control. Under the EPA Statement 14, the noise would be considered as conditionally acceptable for residential premises.

As discussed previously, these criteria are only considered as guidance to the expected noise impact and although it would be considered generally acceptable, the noise from trucks passing cannot strictly be compared to normal road traffic noise which is often non-descript.

As such, the truck movements would need to be managed carefully and we believe that restricting the speed to 40km/h is a good management tool for this project. We would also recommend a management policy to ensure the trucks are well maintained, in particular, exhaust systems are operating efficiently. Although unlikely to be required at the low speeds proposed though Derby, the use of engine brakes should be strongly discouraged.


APPENDIX A

Distance Survey

CommentsMeasurements are in metres from the closest edge of the building to the road curb. The road width varies from 4.5 to 5.5m

Dist (m)

Dist (m) Measurements less than 10m were made using a tape measure initially then paced.

Distances inside gardens to houses (where access was problematic) were estimated.Mary Island Fishing Club -‐ Under reconstruction na na Old wool shed museum *1 *1 museum not occupied

ELDER ST

#2 Llwoy's Chinese Restaurant 9 30 #3 Wharfingers House Museum *1 *1 museum not occupied#4 Kimberley Harvest Christian Centre 9 30 #7

Totally Workwear 9#12 Settlement Village 9 #11 Builders junk yard

Dept of Housing 9Disability Services 9 20 #19 Derby picture garden (derelect)

Corrective Services 9Kimberley Development Comm. 9 30 #23 house#24 SDWK Development Services 20 25 #27 Derby Animal Welfare Group Book Shop

#28 Agriculture WA 20 25 #31 EldersJOHNSTON ST

SDWK Main Office 60 10 #33 Big Barra's (fishing/camping shop)Derby Visitor Centre 30 15 #35 Big Barra's houseSDWK Civic Centre 60 na #39 Vacant Block

12 #43 house10 #43 West Kimberley Physiotherapists12 #47Australian RedCross12 #47 Kim Way Relationship Counselling12 #47 Kimberley Employment Services

#51 Vacant Block#55 Vacant Block

#36 Derby Community Health 16 12 #59 ANZ BankHARDMAN ST

#36 Kimberley Land Council 20 #61 old TAFE not used? Derby Vet Clinic 15 #63 Australia Post

#40 16 18 #67 house#42 Day Star Church 16 15 #71 Derby People's Church

Derby Christian Youth Centre *4 16 17 #75 house#60A unit 18 #79 Vacant block *4 Derelect#60B unit 18 #83 Rock's Auto Service#60C unit 18 19 #87 house

NEVILL ST

16 #91A unit16 #91B unit

16 16 #91C unit16 #91D unit16 #91E unit20 #97 Doctor John's house16 #99 Holy Rosary School 16 #103 Holy Rosary Church20 #107 The Father's house12 #115 Holy Rosary Op Shop

HENSMAN ST

#76 (formerly 64) 25 10 #117A unit#78 25 10 #117B unit#80 15 13 #119 Marin Bowa Dumbara Out-‐Reach Service#82 25 14 #121 Old gaol (heritage site)

Elsia's house #84 25 14 #123 Police and LicensingNew units x 4 #86 13 14 #125 Court House

#88 25 16 #127 A&B units#90 14 na #131 "Bulka" *5 *5 "Bulka" Vacant block

CLARENDON ST

18 #135#92 & #94 20 25 #139 *6 *6 #139 Boarded up

16 20 #143STANLEY ST

DELEWAR ST

15 #145 Winun Ngari Adult Education14 #14714 #149 RFDS

ASHLEY ST

18 Outback Electrical

BLAND ST 25 #?20 #167

King Sound Resort Hotel 70 18

7 Tin shed#116B 40#116A 40#120 40 JULD ST#122 40#124 40 18 #179#128 35 20 #187 *8 *8 Angry dogs#130 35 20 #?

10

BP Colac Road House 25

WAYCOTT ST10 Tidal Wave camping supplies

Park 50 John Silver and Co Painting

40 Derby Bus Services

45 Norval GallerySUTHERLAND St

KNOWSLEY ST EAST 30 FESA / SES *9 *9 Not occupied, used only intermittently

30 Norforce *9 *9 Not occupied, used only intermittently

House 28 KNOWSLEY St EASTMitre 10 Hardware 25 30 House

WODEHOUSE ST

Kimberley Hire 45Derby Auto Electrical 40

Top End Welding 40Kimberley Electrical 40

PDI Contracting Plumbing 40Kimberley Car Hire/ Kimberley Air Supply

(helicopter charter) 40

Woolworths Supermarket

West Kmbrly House

Bussinesses and Residences on Loch St, Derby Invitation/Letter Drop 25 April 2012

Hospital

Town Oval

Boab Inn

L O C H S T

L O C H S T

West To the Port

DERBY HWY


APPENDIX B

Terminology


Reference: 11071876-02B.docx Page A1

The following is an explanation of the terminology used throughout this report.

Decibel (dB)

The decibel is the unit that describes the sound pressure and sound power levels of a noise source. It is a logarithmic scale referenced to the threshold of hearing.

A-Weighting

An A-weighted noise level has been filtered in such a way as to represent the way in which the human ear perceives sound. This weighting reflects the fact that the human ear is not as sensitive to lower frequencies as it is to higher frequencies. An A-weighted sound level is described as LA dB.

Sound Power Level (Lw) Under normal conditions, a given sound source will radiate the same amount of energy, irrespective of its surroundings, being the sound power level. This is similar to a 1kW electric heater always radiating 1kW of heat. The sound power level of a noise source cannot be directly measured using a sound level meter but is calculated based on measured sound pressure levels at known distances. Noise modelling incorporates source sound power levels as part of the input data.

Sound Pressure Level (Lp) The sound pressure level of a noise source is dependent upon its surroundings, being influenced by distance, ground absorption, topography, meteorological conditions etc and is what the human ear actually hears. Using the electric heater analogy above, the heat will vary depending upon where the heater is located, just as the sound pressure level will vary depending on the surroundings. Noise modelling predicts the sound pressure level from the sound power levels taking into account ground absorption, barrier effects, distance etc.

LASlow This is the noise level in decibels, obtained using the A frequency weighting and the S time weighting as specified in AS1259.1-1990. Unless assessing modulation, all measurements use the slow time weighting characteristic.

LAFast This is the noise level in decibels, obtained using the A frequency weighting and the F time weighting as specified in AS1259.1-1990. This is used when assessing the presence of modulation only.

LAPeak This is the maximum reading in decibels using the A frequency weighting and P time weighting AS1259.1-1990.

LAmax An LAmax level is the maximum A-weighted noise level during a particular measurement.

LA1

An LA1 level is the A-weighted noise level which is exceeded for one percent of the measurement period and is considered to represent the average of the maximum noise levels measured.



LA10 An LA10 level is the A-weighted noise level which is exceeded for 10 percent of the measurement period and is considered to represent the “intrusive” noise level.

LAeq The equivalent steady state A-weighted sound level (“equal energy”) in decibels which, in a specified time period, contains the same acoustic energy as the time-varying level during the same period. It is considered to represent the “average” noise level.

LA90 An LA90 level is the A-weighted noise level which is exceeded for 90 percent of the measurement period and is considered to represent the “background” noise level.

One-Third-Octave Band Means a band of frequencies spanning one-third of an octave and having a centre frequency between 25 Hz and 20 000 Hz inclusive.

LAmax assigned level Means an assigned level which, measured as a LA Slow value, is not to be exceeded at any time. LA1 assigned level Means an assigned level which, measured as a LA Slow value, is not to be exceeded for more than 1% of the representative assessment period.

LA10 assigned level Means an assigned level which, measured as a LA Slow value, is not to be exceeded for more than 10% of the representative assessment period.

Tonal Noise A tonal noise source can be described as a source that has a distinctive noise emission in one or more frequencies. An example would be whining or droning. The quantitative definition of tonality is:

the presence in the noise emission of tonal characteristics where the difference between —

(a) the A-weighted sound pressure level in any one-third octave band; and

(b) the arithmetic average of the A-weighted sound pressure levels in the 2 adjacent one-third octave bands,

is greater than 3 dB when the sound pressure levels are determined as LAeq,T levels where the time period T is greater than 10% of the representative assessment period, or greater than 8 dB at any time when the sound pressure levels are determined as LA Slow levels.

This is relatively common in most noise sources.



Modulating Noise A modulating source is regular, cyclic and audible and is present for at least 10% of the measurement period. The quantitative definition of tonality is:

a variation in the emission of noise that —

(a) is more than 3 dB LA Fast or is more than 3 dB LA Fast in any one-third octave band;

(b) is present for at least 10% of the representative

Impulsive Noise An impulsive noise source has a short-term banging, clunking or explosive sound. The quantitative definition of tonality is:

a variation in the emission of a noise where the difference between LA peak and LA Max slow is more than 15 dB when determined for a single representative event;

Major Road

Is a road with an estimated average daily traffic count of more than 15,000 vehicles.

Secondary / Minor Road

Is a road with an estimated average daily traffic count of between 6,000 and 15,000 vehicles.

Influencing factor

( ) ( )

100m within roadmajor each for 6450m within roadmajor each for 2

100m within roadsecondary each for 2 dB) 6 of (maximumFactor Traffic

noise thereceiving premises theof radius 450m a within land commercial of percentage the%TypeB

noise thereceiving premises theof radius a100m within land commercial of percentage theB Type %

noise thereceiving premises theof radius 450m a within land industrial of percentage the%TypeA

noise thereceiving premises theof radius a100m withinland industrial of percentage theA Type %

:

B Type %B Type %201A Type %A Type %

101

450

100

450

100

450100450100

=

=

=

+

=

=

=

=

+++=

where

Representative Assessment Period

Means a period of time not less than 15 minutes, and not exceeding four hours, determined by an inspector or authorised person to be appropriate for the assessment of a noise emission, having regard to the type and nature of the noise emission.



Background Noise Background noise or residual noise is the noise level from sources other than the source of concern. When measuring environmental noise, residual sound is often a problem. One reason is that regulations often require that the noise from different types of sources be dealt with separately. This separation, e.g. of traffic noise from industrial noise, is often difficult to accomplish in practice. Another reason is that the measurements are normally carried out outdoors. Wind-induced noise, directly on the microphone and indirectly on trees, buildings, etc., may also affect the result. The character of these noise sources can make it difficult or even impossible to carry out any corrections.

Ambient Noise Means the level of noise from all sources, including background noise from near and far and the source of interest.

Specific Noise Relates to the component of the ambient noise that is of interest. This can be referred to as the noise of concern or the noise of interest.

Chart of Noise Level Descriptors



Typical Noise Levels

Documents

Duchess Paradise Project Truck Movements Through Derby to ... · Report: 11071876-02B Lloyd George Acoustics Pty Ltd ABN: 79 125 812 544 PO Box 717 Hillarys WA 6923 Offices: Ocean