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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5.1.1 A1, 26 October 2012, Daytime<br />
Environmental <strong>Noise</strong> Levels At A1 - Castlerock Road<br />
26 Oct 2012, 0714 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 />
Road traffic tyre noise and birds<br />
Measured <strong>Noise</strong> Levels<br />
LA1: 48 dB<br />
LA10: 42 dB<br />
LAeq: 39 dB<br />
LA90: 32 dB<br />
<strong>Mangoola</strong> <strong>Coal</strong> <strong>Noise</strong><br />
Levels<br />
LAeq: 26 dB<br />
40<br />
35<br />
30<br />
Road traffic engine noise<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 3<br />
Environmental <strong>Noise</strong> Levels, A1 – Castlerock Road<br />
Engine continuum and rear dump trucks from <strong>Mangoola</strong> <strong>Coal</strong> were audible throughout the<br />
measurement. Track noise was also audible briefly. These sources generated the <strong>Mangoola</strong><br />
<strong>Coal</strong> only L Aeq of 26 dB.<br />
Road traffic tyre noise and birds were responsible for the measured levels.<br />
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