QUARTERLY NOISE MONITORING REPORT ONESTEEL …...Trains & Aircraft and Traffic & Other were the...

1 INTRODUCTION

This letter report provides the results of attended surveys conducted on the days of the 8th

and 17th December 2015 to assess the noise impact of operations at the OneSteel

Recycling Pty Ltd facility located at No.14 and No.41 Sparke Street, Hexham.

The surveys have been conducted in response to the noise monitoring requirements in

the Environment Protection License for the site and have been conducted in accordance

with the requirements of AS 1055 - Acoustics - Description and Measurement of

Environmental Noise. The target noise goals for the premises are set out in Table 2

below.

This report also contains details of the data obtained from the permanent noise monitoring

station located at the St. Joseph’s Retirement Village over the October to December 2015

reporting period.

RCA ref: 7943 - 421.1 OSR Hexham Quarterly Noise Survey OCT-DEC 2015

27 January 2016

OneSteel Recycling Pty Ltd

55 – 57 Riverside Road,

Chipping Norton NSW 2170

Attention: Roger Baines

QUARTERLY NOISE MONITORING REPORT

ONESTEEL RECYCLING, HEXHAM

OCTOBER TO DECEMBER 2015

Page 2

OneSteel Recycling Pty Ltd OneSteel Recycling Hexham October-December 2015 Quarterly Noise Surveys RCA ref 7943 - 421.1 Osr Hexham Quarterly Noise Survey Oct-Dec 2015, January 2016

2 EQUIPMENT

The equipment used for monitoring sound levels is shown below in Table 1.

Table 1 Equipment Used for Sound Pressure Level Measurements

Type of monitoring Make/Model Serial Number Last Calibrated

Attended surveys 01dB SLS 95 30422 December 2014

Unattended Logging Ngara 878121 March 2014

3 SOUND LEVEL TARGETS

The target noise goals for the premises are set out in Table 2 below.

Table 2 Target Noise Goals

Location Day

LAeq (15min)

Evening

LAeq (15min)

Night

LAeq (15min)

Any residence in Shamrock Street 47 48 45

St. Joseph’s Retirement Village & any

associated residence on Old Maitland Road 53 42 41

4 RESULTS

4.1 METEOROLOGY

The weather conditions for all surveys conducted were suitable for noise monitoring over

the entire survey period and are shown below in Table 3.

Table 3 Weather Conditions

Survey Date Start

Time Location Cloud Temp Wind Speed

Wind

Direction Effects of Weather

8 Dec 2015 13:43 Shamrock St 6 Octa 32 °C 2.5 m/s S-SE Elevated OneSteel

Levels

8 Dec 2015 13:02 St. Joseph’s 6 Octa 30 °C 1.2 to 2.6 m/s NE-E Reduced OneSteel

Levels

17 Dec 2015 13:43 Shamrock St 3 Octa 30 °C 0.5 to 3 m/s S Elevated OneSteel

Levels

17 Dec 2015 13:01 St. Joseph’s 3 Octa 27 °C 1 to 2.9 m/s NE-E Reduced OneSteel

Levels

4.2 MEASURED SOUND LEVELS

Table 4 shown below gives the results of the attended noise surveys conducted on the

8th and 17th December 2015. Marked time traces of the attended noise surveys are shown

in Figure 1 to Figure 4 at the end of this report.

Page 1


Table 4 Measured Sound Levels

Survey Date

Survey

Start

Time

Location

Overall OneSteel

LAeq 15min

Contribution

OneSteel

LAeq 15min

Limit

Trains &

Aircraft

LAeq 15min

Contribution

Traffic &

Other

LAeq 15min

Contribution

Noise Sources

and

Level Range

dB(A) LAeq

15min

LA10

15min

LA90

15min

8 December

2015 13:43 Shamrock St 67 58 51 53 47 67 46

OneSteel 49 to 62

Trains 54 to 83

Traffic & Other 50 to 66

8 December

2015 13:58 Shamrock St 64 64 51 48 47 64 51

OneSteel 48 to 66

Trains 50 to 90


8 December

2015 13:02 St. Joseph’s 48 50 44 29 53 44 45

OneSteel 43 to 54

Trains 42 to 67


8 December

2015 13:17 St. Joseph’s 47 49 43 34 53 41 45

OneSteel 43 to 69

Trains 42 to 56


17 December

2015 13:43 Shamrock St 56 58 53 47 47 54 50

OneSteel 51 to 66

Trains & Aircraft 54 to 67


17 December

2015 13:58 Shamrock St 65 63 53 49 47 64 50

OneSteel 51 to 65

Trains & Aircraft 52 to 86


17 December

2015 13:01 St. Joseph’s 48 49 45 36 53 40 47

OneSteel 44 to 53

Trains 44 to 59


17 December

2015 13:16 St. Joseph’s 48 50 45 34 53 42 47

OneSteel 44 to 56

Trains 45 to 64


Page 2


4.2.1 OPERATING EQUIPMENT AND NOISE SOURCE IDENTIFICATION

The equipment that was observed to be operating at the OneSteel Recycling plant and the

Sound Pressure Levels associated with that equipment are listed in Table 5 below.

Table 5 Plant Activity

Activity

8 December

2015

Shamrock St

dB(A)

8 December

2015

St. Joseph’s

dB(A)

17 December

2015

Shamrock St

dB(A)

17 December

2015

St. Joseph’s

dB(A)

Metal Handling Audible

<56 Not Audible

Intermittently

Audible

<62

Barely Audible

<50

Mill Audible

50 -61 Not Audible

Intermittently

Audible

<53 Not Audible

Loader

Beepers

Audible

<58 Not Audible Not Audible Not Audible

Z-Box

Conveyor Not Audible Not Audible

Intermittently

Audible

50 -53 Not Audible

Mag Drum Not Audible Not Audible Not Audible Not Audible

Mill Siren Not Audible Not Audible Not Audible Not Audible

Trucks

Unloading

Audible

<53

Intermittently

Audible

<55 Not Audible

Intermittently

Audible

<52

5 DISCUSSION

5.1 SURVEYS ON THE 8TH OF DECEMBER 2015

5.1.1 SHAMROCK STREET

The survey on the 8th of December 2015 at Shamrock Street showed that Trains & Aircraft

were the dominant noise sources over the survey period. The Mill at OneSteel Recycling

was seen to be operational for the entire survey period, with Metal handling, Mill, Loader

beepers and Trucks unloading audible over the entire survey period. OneSteel Recycling

had LAeq 15min contributions of 53 and 48 dB(A) for each of the 15 minute periods of the

survey. Trains & Aircraft were intermittently audible with LAeq 15min contributions of 67 and

64 dB(A) and Traffic from Maitland Road was constantly audible with LAeq 15min

contributions of 46 and 51 dB(A).

5.1.2 ST JOSEPH’S RETIREMENT VILLAGE

The survey on the 8th of December 2015 at St Joseph's Retirement Village showed that

Trains & Aircraft and Traffic & Other were the dominant noise sources over the survey

period. The Mill at OneSteel Recycling was seen to be operational for the entire survey

period, with only Trucks unloading intermittently audible over the survey period. OneSteel

Recycling contributed to the acoustic climate with LAeq 15min contributions of 29 and 34

Page 3


dB(A). Trains were intermittently audible with LAeq 15min contributions of 44 and 41 dB(A),

while Traffic and Other noise was intermittently audible with LAeq 15min contributions of 45

dB(A) for both 15 minute periods of the survey.

5.2 SURVEYS ON THE 17TH OF DECEMBER 2015

5.2.1 SHAMROCK STREET

The survey on the 17th of December 2015 at Shamrock Street showed that Trains and

Aircraft was the dominant noise source over the survey period. The Mill at OneSteel

Recycling was seen to be operational for the entire survey period, with Metal Handling,

Mill and possibly Z-Box conveyor audible during the survey period and contributing to the

acoustic climate with LAeq 15min contributions of 47 and 49 dB(A). Trains were intermittently

audible with LAeq 15min contributions of 54 and 64 dB(A), while Traffic and Other noise was

frequently audible with LAeq 15min contributions of 50 dB(A) for both periods of the survey.

5.2.2 ST JOSEPH’S RETIREMENT VILLAGE

The survey on the 17th of December 2015 at St. Joseph’s Retirement Village showed that

Traffic & Other was the dominant noise source over the survey period. The Mill at

OneSteel Recycling was seen to be operational for the entire survey period, with Metal

Handling barely audible and Trucks Unloading intermittently audible. OneSteel Recycling

contributed to the acoustic climate with LAeq 15min contributions of 36 and 34 dB(A). Trains

were intermittently audible with LAeq 15min contributions of 40 and 42 dB(A), while Traffic and

Other noise was frequently audible with LAeq 15min contributions of 47 dB(A) for both periods

of the survey.

5.3 LOGGED SOUND LEVEL DATA AT ST JOSEPH’S RETIREMENT VILLAGE

Regular downloading of the long term acoustic data from the ARL Ngara Real Time

Sound Acquisition System located at St Joseph’s Retirement Village is undertaken during

each reporting period. This includes the downloading of the data to a laptop, test

calibration of the microphone and the clearing of the logger’s internal memory before

resuming data logging.

Time traces of the logged 15 minute LAeq and LA90 statistical Sound Pressure Levels at the

permanent noise monitoring station located at St Joseph’s Retirement Village are shown

by month in Figure 5, Figure 6 and Figure 7 for the months of October, November and

December 2015 respectively.

Data from the ARL Ngara Real Time Sound Acquisition System at the St. Joseph’s

Retirement Village has shown that due to the 12 volt battery running flat, the logger was

not operational during the periods from the 1st to 12:00 on the 2nd of October, from 18:00

on the 10th of November to 11:15 on the 13th of November and from 21:30 on the 29th of

November to 12:00 on the 17th of December.

Acoustic levels recorded at the logger show that the LAeq, 15 min values during the daytime

period are generally consistent with the noise level target of 53 dB(A) at

St. Joseph’s Retirement Village, with several periods exceeding the target level which are

likely attributable to wind conditions, increasing the received noise levels of either

OneSteel Recycling or traffic from Maitland Road.

Page 4


6 CONCLUSION

6.1 COMPLIANCE WITH NOISE LIMITS

The attended surveys conducted at Shamrock Street show that 15 minute LAeq

contributions from OneSteel Recycling have exceeded the target noise goal of 47 dB(A) at

Shamrock Street. The 1st 15 minute period of the survey conducted on the 8th of

December 2015 at Shamrock St exceeded the target noise goal by 6 dB(A), with minor

exceedance of the target noise goal by 1 and 2 dB(A) at Shamrock Street during the 2nd

15 minute periods of the surveys conducted on the 8th and 17th of December respectively.

Wind conditions during the surveys conducted at Shamrock Street that have exceeded the

target noise goal were all blowing from OneSteel Recycling to the receivers at Shamrock

Street, which has resulted in increased received noise levels from OneSteel Recycling at

Shamrock Street.

All other attended surveys at St. Joseph’s Retirement Village and Shamrock St for this

reporting period show that OneSteel Recycling complies with its Environment Protection

Licence during this reporting period, and in our opinion, is unlikely to be a consistent

source of offensive or intrusive noise at nearby residential receptors.

Thank you for the opportunity to provide this assessment. Please do not hesitate to

contact the undersigned if you have any questions regarding this report or any other

acoustic matter.

Yours Sincerely

RCA Acoustics

Document Control

Prepared by

Harald Mueller GradDipDesSc (Audio & Acoustics) AES Acoustic Consultant

Reviewed and Authorised by

Matthew Bain MDesSc (Audio & Acoustics)

Acoustics Consultant

Date 27 January 2016

Page 5


7 REFERENCES

dB(A) ..................................... Unit of sound pressure level, modified by the A-weighting

network to represent the sensitivity of the human ear.

SPL ........................................ Sound Pressure Level (SPL), the incremental variation of

sound pressure from the reference pressure level, 20 µPa,

expressed in decibels.

SWL (LW) ............................... Sound Power Level (SWL) of a noise sources per unit time

expressed in decibels from reference level WO of 10-12 W.

LX ........................................... Statistical noise descriptor. Where (x) represents the

percentage of the time for which the specified noise level is

exceeded.

Leq .......................................... Equivalent continuous noise level averaged over time on an

equivalent energy basis.

L1 ........................................... Average Peak Noise Level in a measurement period.

L10 .......................................... Average Maximum Noise Level in a measurement period.

L90 .......................................... Average Minimum Noise Level in a measurement period.

Lmax ........................................ Maximum Noise Level in a measurement period.

Background Noise Level ........ Noise level determined for planning purposes as the one

tenth percentile of the ambient LA90 noise levels.

PO .......................................... Reference Sound Pressure for the calculation of SPL in

decibels.

WO ......................................... Reference Sound Power, 10-12 W, for the calculation of

SWL in decibels.

Page 6


Figure 1 Sound Level Chart, Attended Survey at Shamrock Street 08/12/2015

#17 Fast 125ms A dB dBTUE 08/12/15 13h43m31s000 76.6 TUE 08/12/15 14h13m30s875 52.9

Trains & Planes OneSteel recycling Traffic & Other Residual

Source

40

45

50

55

60

65

70

75

80

85

90

95

100

13h45 13h50 13h55 14h00 14h05 14h10

Page 7


Figure 2 Sound Level Chart, Attended Survey at St Joseph’s Retirement Village 08/12/2015

#16 Fast 125ms A dB dBTUE 08/12/15 13h02m56s000 43.1 TUE 08/12/15 13h32m55s875 49.0


Source

40

45

50

55

60

65

70

13h05 13h10 13h15 13h20 13h25 13h30

Page 8


Figure 3 Sound Level Chart, Attended Survey at Shamrock Street 17/12/2015

#20 Fast 125ms A dB dBTHU 17/12/15 13h43m06s000 59.5 THU 17/12/15 14h13m05s875 59.2


Source

50

55

60

65

70

75

80

85

90

13h45 13h50 13h55 14h00 14h05 14h10

Page 9


Figure 4 Sound Level Chart, Attended Survey at St Joseph’s Retirement Village 17/12/2015

#19 Fast 125ms A dB dBTHU 17/12/15 13h01m18s000 45.3 THU 17/12/15 13h31m17s875 48.8


Source

40

45

50

55

60

65

70

13h05 13h10 13h15 13h20 13h25 13h30

Page 10


Figure 5 Sound Level Chart, St Joseph’s Retirement Village Noise Logger Data for October 2015

30

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/10

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Sou

nd

Pre

ssu

re L

eve

l, L x

15

min

ute

dB

(A)

re:

20

μP

a

Date - Time (dd/mm/yy - hh:mm)

St Joseph's Retirement Village - Logged 15 Minute LAeq & LA90

October 1 - 31, 2015 Leq L90

Page 11


Figure 6 Sound Level Chart, St Joseph’s Retirement Village Noise Logger Data for November 2015

30

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80

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Sou

nd

Pre

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re L

eve

l, L x

15

min

ute

dB

(A)

re:

20

μP

a



November 1 - 30, 2015 Leq L90

Page 12


Figure 7 Sound Level Chart, St Joseph’s Retirement Village Noise Logger Data for December 2015

30

35

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50

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75

80

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Pre

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re L

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l, L x

15

min

ute

dB

(A)

re:

20

μP

a



December 17 - 31, 2015 Leq L90

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