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 21 of 21

APPENDIX C: BACKGROUND NOISE LEVEL MEASUREMENT EQUIPMENT

Measurement Equipment

The following equipment was used to conduct the background noise assessment in July 2012:

* Bruel and Kjaer Type 22601 Modular Precision Sound Analyzer — Observer — Serial No. 2487423,
with Type BZ 7220 Software and Prepolarised free-field /2” microphone, Type 4189, Serial No.
2502862;

+ 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. 2482633.

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: -27.7 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 as per Figure 1 of this report, at 301 Tablelands Road, with the
microphone elevated 1.6 metres above ground level.

Atmospheric Conditions

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

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