APPENDIX I: Noise Monitoring Data - Xstrata Coal Mangoola

Mangoola Coal land acquisition criteria are set out in Table 2.2.
Table 2.2 MANGOLA COAL LAND ACQUISITION CRITERIA, L Aeq dB
Location Day Evening Night
All privately owned land 40 40 40
2.5 Low Frequency Criteria
As detailed in the notes below condition 3, Schedule 3 of the project approval:
The modification factors in Section 4 of the NSW Industrial Noise Policy shall also be applied to
the measured noise levels where applicable.
As defined in the Industrial Noise Policy:
Low frequency noise contains major components within the low frequency range (20 Hz to 250
Hz) of the frequency spectrum.
As detailed in Chapter 4 of the INP, low frequency noise should be assessed by measuring the
C-weighted and A-weighted level over the same time period. The correction/penalty of 5 dB
is to applied if the difference between the two levels is 15 dB or more.
Low frequency noise can also be assessed against criteria specified in the paper "A Simple
Method for Low Frequency Noise Emission Assessment ”(Broner JLFNV Vol29-1 pp1-14
2010). If the total predicted C – weighted noise level at a receptor exceeds the relevant
criterion; a 5 dB penalty (modifying factor) is added to predicted levels.
Low frequency criteria are detailed in Table 2.3.
Table 2.3 L Ceq,15minute CRITERIA (dBC)
Method Calculation Method Night-time Criterion Daytime Criterion
Broner, 2010 L Ceq to 250 Hz 60 65
INP, 2000 Total L Ceq minus L Aeq 15 15
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