Att6 - Noise Impact Assessment

Christian Youth Council
Environmental Noise Level Impact Assessment for Proposed Extensions to CYC Youth Camp,
48 Kabi Road, Cootharaba                                                                              Page 16 of 22



                APPENDIX A: AMBIENT NOISE LEVEL MEASUREMENT EQUIPMENT


Measurement Equipment

The following equipment was used to conduct the un-attended 7-day ambient noise level
measurements at monitoring location A:

•   Bruel and Kjaer Type 2250 Hand Held Analyzer, Serial No. 3004242, with Type BZ 7222, BZ 7223
    and BZ 7224 Software and Prepolarised free-field ½” microphone, Type 4189, Serial No.
    2880058;

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

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

•   Bruel and Kjaer Type AO 0442 ten metre microphone extension cable.

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 1055-2018.


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:          38.615 mV/Pa


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

As detailed in the main body of this report (Figure 1 refers), with the microphone elevated 1.6 metres
above ground level.


Atmospheric Conditions

Throughout the noise level study atmospheric conditions generally complied with the requirements of
the Australian Standard, with the following exceptions:

    •    Wednesday 6th July:                  5.6 mm rain;
    •    Friday 7th July:                     0.2 mm rain;
    •    Monday 11th July:                    0.6 mm rain;
    •    Tuesday 12th July:                   0.2 mm rain;
    •    Wednesday 13th July:                 24.4 mm rain.




David Moore & Associates Pty Ltd                                  Our reference: R22072.docx/D3681/Rev.0/25.08.2022