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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5.1.11 A1, 5 July 2012, Night<br />
Environmental <strong>Noise</strong> Levels At A1 - Castlerock Road<br />
05 Jul 2012, 2334 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 />
Road traffic<br />
tyre noise<br />
Measured <strong>Noise</strong> Levels<br />
LA1: 36 dB<br />
LA10: 33 dB<br />
LAeq: 32 dB<br />
LA90: 30 dB<br />
<strong>Mangoola</strong> <strong>Coal</strong> <strong>Noise</strong><br />
Levels<br />
LA1,1min: 35 dB<br />
LAeq: 31 dB<br />
35<br />
30<br />
<strong>Mangoola</strong> <strong>Coal</strong> continuum, track noise, CHPP continuum<br />
and rear dump truck noise<br />
Frogs<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 13<br />
Environmental <strong>Noise</strong> Levels, A1 – Castlerock Road<br />
A continuum from <strong>Mangoola</strong> <strong>Coal</strong> was audible throughout the measurement. Track noise,<br />
transmission whine, CHPP continuum, a two-toned alarm, rear dump truck engine and<br />
exhaust noise and a horn were also noted. These sources resulted in a <strong>Mangoola</strong> <strong>Coal</strong> only<br />
L Aeq of 31 dB. Continuum surge generated the <strong>Mangoola</strong> <strong>Coal</strong> only L A1,1min of 35 dB.<br />
Road traffic noise and <strong>Mangoola</strong> <strong>Coal</strong> combined to generate the measured L A1 . <strong>Mangoola</strong><br />
<strong>Coal</strong> generated the other measured levels.<br />
Frogs, road traffic tyre noise, other mining continuum and a train horn were also noted.<br />
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