5 Acoustic Report Amended - Wollongong City Council

DAY DESIGN PTY LTD
A.B.N. 73 107 291 494
C O N S U L T I N G A C O U S T I C A L E N G I N E E R S
The Illawarra Clay Target Club
C/- JBA Urban Planning Consultants
29 Beach Street
Wollongong NSW 2500
Attention: Mr Terry Wetherall
Telephone: 02 4220 5205
Dear Sir,
Proposed Clay Target Shooting Range
Noise Compliance Assessment
• A I R C R A F T , R O A D T R A F F I C A N D T R A I N N O I S E C O N T R O L
• A R C H I T E C T U R A L A C O U S T I C S • I N D U S T R I A L N O I S E A N D V I B R A T I O N C O N T R O L
• E N V I R O N M E N T A L N O I S E I M P A C T I N V E S T I G A T I O N A N D C O N T R O L
• O C C U P A T I O N A L N O I S E I N V E S T I G A T I O N S • Q U I E T P R O D U C T D E V E L O P M E N T
Suite 17, 808 Forest Road
Peakhurst Sydney NSW 2210
Phone: (02) 9584 2639 Fax: (02) 9584 2619
Email: acoustics@daydesign.com.au
www.daydesign.com.au
Refer: 4350-R1 Rev A
23 November, 2010
Day Design Pty Ltd has been engaged by the Illawarra Clay Target Club to determine the noise
impact of a proposed clay target shooting range at Lot 1, Bong Bong Road, Huntley, NSW on
nearby residences and vacant residential land.
We are pleased to advise that we have visited the site and measured the noise emission of clay
target shooting at the nearest residential receiver locations as well as on vacant land zoned R2
Low Density Residential under Wollongong City Council’s Local Environmental Plan West
Dapto 2010.
Measurements show that noise emission from the site, at the nearest effected residence is 70 dB
(Lin) Peak Hold and at the most affected point within vacant residential land is 75 dB. This will
allow for a maximum usage of the range of 4 days (10 am to 5 pm) per week, in accordance with
the Department of Environment, Climate Change and Water’s Environmental Noise Control
Manual (ENCM), Chapter 164.
1.0 CONSULTING BRIEF
Day Design Pty Ltd was engaged by the Illawarra Clay Target Club to determine the level of
noise emission from a proposed clay target shooting range at nearby residential receivers and
vacant residential land, to establish the maximum allowable usage of the range based on the level
of noise emission.
This commission involves the following:-
Quality
Certified

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Scope of Work:
• Inspect the site and environs
• Measure noise emissions from shooting activity at the site
• Determine the maximum allowable usage in accordance with the ENCM
• Prepare a Noise Assessment Report
2.0 ACCEPTABLE NOISE LEVELS
The Department of Environment, Climate Change and Water’s Environmental Noise Control
Manual is no longer in print and is progressively being superseded by more recent guidelines.
However Chapter 164 “Target Shooting Ranges” of the ENCM has not been updated or
superseded by new DECCW guidelines at this stage.
The DECCW Noise Guide for Local Government (December 2004) gives guidance on the
approach for noise control of facilities including shooting ranges, which is in line with the
ENCM.
Criterion for this assessment is therefore derived from Chapter 164 of the ENCM as shown in
Table 2.1 below:-
Table 2.1 Maximum Day/Night Usage Based on Measured Peak Hold Noise Levels
Future Range –
Daytime Use
Future Range –
Night Time Use
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THE ILLAWARRA CLAY TARGET CLUB
Residential Level dB (Lin) Peak Hold
60 65 70 75 80 85 90 95 100 105 Over
105
Maximum Usage Days (Nights) Per Week *
7 5 5 4 3 2 1 - - - -
3 2 1 - - - - - - - -
* Day time is defined by 10.00 am to 5.00 pm and night time is defined by 5.00 pm to 10.00 pm.
The DECCW Noise Guide for Local Government, Section 2.4.5 sates:-
“Target shooting ranges and gun clubs produce high levels of very-short-duration noise from
firearm discharges. One approach to capture this type of noise is to set a sound level meter to
linear peak hold so that the short-duration events can be captured and measured by the meter.”
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3.0 NOISE SURVEY INSTRUMENTATION
Noise level measurements and analysis were made with instrumentation as follows in Table 3.1.
Table 3.1 Noise Instrumentation
Description Model No. Serial No.
Real Time Sound level Analyser
Condenser Microphone 0.5” diameter
Microphone Calibrator
Microphone Windscreen
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THE ILLAWARRA CLAY TARGET CLUB
CEL 593
MK 250
CAL 200
Acoustically transparent foam
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035 426
3300
3646
The CEL 593 Sound Analyser is a real-time precision integrating sound level meter with octave
and third octave filters, that samples noise at a rate of 10 samples per second. The CEL 593
provides Lmax, Lmin, Lpeak, Leq and statistical data at 15 minute intervals (longer or shorter
intervals optional) over the desired monitoring period. Results are normally downloaded to
computer for rapid processing.
All instrument systems had been laboratory calibrated using instrumentation traceable to
Australian National Standards and certified within the last two years thus conforming to
Australian Standards. The measurement system was also field calibrated prior to and after noise
surveys. Calibration drift was found to be less than 0.3 dB during attended measurements. No
adjustments for instrument drift during the measurement period were warranted.
4.0 GUN NOISE EMISSION
The Illawarra Clay Target Club proposes to purchase Lot 1 (DP 618764) Bong Bong Road,
Huntley and establish a clay target shooting range on the site. The property is a 66 acre rural
property located to the north of Bong Bong Road along the Illawarra Escarpment. The nearest
residence to the site is located approximately 600 metres to the south on the western side of
Hayes Lane. To the north east is the Wongawilli Colliery and residences in Jersey Farm Road, the
nearest of which is at a distance of approximately 1.5 kilometres from the proposed shooting
range. Directly east of the site is vacant land reportedly zoned R2 Low Density Residential. The
residences and vacant land are shown on the attached Site Plan 4350 Figure 1.
The proposed range will cater for clay target shooting using 12-gauge shotgun firearms. The
author visited the site on Wednesday 31 March 2010 and again on Friday 12 November 2010 to
measure the noise emission of several shots at the nearby residence and on the vacant land.
Measurements were taken at approximately 30 metres from the nearest facade of the rural
residential property on Hayes Lane to the south in March 2010. Measurements were also taken on
vacant land to the east in November 2010.

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Measurements on the vacant land were taken at distances of approximately 350 and 370 metres
from the proposed site at ground level and on an elevated earth mound respectively. If not for
trees there was direct line of sight to the shooters from both locations and are therefore
representative of the potentially worst affected point on the vacant land.
Mr Ted Kelly and his associates of the Illawarra Clay Target Club fired shots using a 12-gauge
shotgun at various locations around the proposed site of the range on the property. The weather
during the noise survey in March was mild, overcast and dry with negligible wind. The weather
during the November noise survey was warm, sunny and dry with negligible wind.
The results are shown in Table 4.1 below:-
Table 4.1 Measured (Lpeak) Gunshot Noise Levels
Location Lin Peak Hold (dB)
Hayes Lane Residence (Location A) 69 to 70
Vacant Land at Ground Level (Location C) 68 to 72
Vacant Land at Elevated Mound (Location D) 72 to 75
Measurements were also taken in Jersey Farm Road in March 2010, adjacent to the nearest
residential boundary to the site (Location B on the attached Site Plan). However it was not
possible to measure gunshot noise at this location as the ambient noise in the area was dominated
by the Wongawilli Colliery. Peak noise emission from the Colliery ranged between 79 and 86 dB
(Lin) Peak Hold. Gunshots were not audible at this location at any time including during lulls in
Colliery activity. We are confident that noise emission from gunshots at the proposed site is
lower at this location than at the nearest resident to the south (i.e. below 70 dB).
Noise emission from the proposed clay target shooting range allows for a maximum usage of
5 days and 1 night at the nearest existing residence, in accordance with the ENCM criterion.
Noise emission from the proposed clay target shooting range allows for a maximum usage of
4 days at the most affected point on vacant residential land to the east.
It is understood that no night time shooting is proposed by the Club.
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5.0 NOISE COMPLIANCE STATEMENT
Measurements show that noise emission from the proposed Illawarra Clay Target Club’s clay
target range at Lot 1, Bong Bong Road, Huntley is a maximum 70 dB (Lin) Peak Hold at the
nearest residence to the site. This level allows a maximum usage of 5 days and 1 night in
accordance with Chapter 164 of the Environmental Noise Control Manual. Should residential
development occur on the vacant land to the east of the site in the future, the maximum usage of
the Clay Target Club should be reduced to 4 days.
We are of the opinion that noise emission from the site will not cause “offensive noise” as
defined by the Protection of the Environment Operations Act 1997.
Matthew Harwood AAAS
Senior Acoustical Consultant for and on behalf of Day Design Pty Ltd.
A.A.A.C. MEMBERSHIP
Day Design Pty Ltd is a member company of the Association of Australian Acoustical Consultants, and
the work herein reported has been performed in accordance with the terms of membership.
Attachments:
• Figure 1 – Location Plan
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