APPENDIX I: Noise Monitoring Data - Xstrata Coal Mangoola
APPENDIX I: Noise Monitoring Data - Xstrata Coal Mangoola
APPENDIX I: Noise Monitoring Data - Xstrata Coal Mangoola
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5.1.9 A4, 2 April 2012, Evening<br />
Environmental <strong>Noise</strong> Levels At A4 - Yarraman Road<br />
02 Apr 2012, 1935 hours<br />
TotalLA1 TotalLA10 TotalLAeq TotalLA90 LA1 LA10 LAeq LA90<br />
70<br />
65<br />
dB(A)<br />
60<br />
55<br />
50<br />
45<br />
40<br />
35<br />
30<br />
XMC rear dump truck<br />
exhaust noise<br />
Insects on windshield<br />
Frogs<br />
Insects<br />
Bats<br />
Measured <strong>Noise</strong> Levels<br />
LA1: 50 dB<br />
LA10: 49 dB<br />
LAeq: 47 dB<br />
LA90: 44 dB<br />
XMC Only <strong>Noise</strong> Levels<br />
LAeq: 24 dB<br />
All statistics are 15min<br />
unless noted otherwise<br />
in report<br />
25<br />
20<br />
12.5<br />
16<br />
20<br />
25<br />
31.5<br />
40<br />
50<br />
63<br />
80<br />
100<br />
125<br />
160<br />
200<br />
250<br />
315<br />
400<br />
500<br />
630<br />
800<br />
1000<br />
1250<br />
1600<br />
2000<br />
2500<br />
3150<br />
4000<br />
5000<br />
6300<br />
8000<br />
10000<br />
Total<br />
Frequency (Hz)<br />
Figure 11<br />
Environmental <strong>Noise</strong> Levels, A4 – Yarraman Road<br />
An engine continuum was audible from <strong>Mangoola</strong> <strong>Coal</strong> during the measurement. Rear<br />
dump truck engine and exhaust noise and impact noise were also audible. These sources<br />
generated the <strong>Mangoola</strong> <strong>Coal</strong> only L Aeq of 24 dB.<br />
Insects were responsible for all measured levels.<br />
Frogs, dogs, insects hitting the windshield and road traffic were also noted.<br />
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