img-730171023-0001-2 · MCU12/0012

Noosa Quad Bike Tours
Environmental Noise Level Assessment of Quad Bike Rider Competency Assessment Circuit,
298 Tablelands Road, Cooran Page 15 of 21

APPENDIX A: NOISE LEVEL. MEASUREMENT EQUIPMENT
Measurement Equipment

The following equipment was used to conduct the source noise level study and brief background noise
assessment in April 2012:

« Bruel and Kjaer Type 22601 Modular Precision Sound Analyzer — Observer — Serial No. 2305236,
with Type BZ 7220 Software and Prepolarised free-field 4" microphone, Type 4189, Serial No.
2294375;

» Bruel and Kjaer Type 3592 outdoor microphone kit, including Type UA1404 outdoor microphone;

+ Bruel and Kjaer Type AO 0442 ten metre microphone extension cable; and

« Bruel and Kjaer Type 4231 Sound Level Calibrator, Serial No. 2292736.

All of the above equipment is Type 1 in accordance with the requirements of Australian Standard AS

1259-1990, Acoustics — Sound Level Meters, as required by Australian Standard AS 1055.1-1997,

Measurement Equipment Settings

The above equipment was used with the following settings:

+ Detector: RMS

* Time Weighting: FAST

« Frequency Weighting: A

« Sound Incidence: FRONTAL
* Microphone sensitivity: -26.8 dB

+ Range: 10-90 dB.
Calibration

The sound level meter was calibrated to the required value of 93.8 dB at 1000 Hz immediately before
and after the noise level measurements were conducted. At no time was an adjustment of more than
+0.5 dB required. This complies with the requirements of the Australian Standard.

Monitoring Location

The monitoring location was off to the side of the quad bike test/training circuit 10 metres from the
closest part of this circuit with the microphone elevated 1.6 metres above the floor level.

Atmospheric Conditions

Throughout the ambient noise level study, atmospheric conditions complied with the requirements of
the Australian Standard.

 

David Moore & Associates Pty Ltd Our reference: R12054/D2670/Rev.1/23.07.2012