Wambo Coal AEMR 2011-2012 - Peabody Energy

3.2 Attended Noise Monitoring – Quarter 4, 2011
3.2.1 Wambo Coal Mine Noise
Noise levels generated by activity at Wambo are shown in Table 3.5 and Table 3.6, where
comparison of measured L Aeq(15 minutes) and L A1(1 minute) levels for WCM is made with
relevant noise goals.
Table 3.5 L Aeq(15 minute) dB GENERATED BY WCM AGAINST NOISE CRITERIA - QUARTER 4, 2011
Location Date / Start Time Wind
Speed
(m/s)
VTG 7
( 0 C/100m)
Criterion
L Aeq(15
min) dB1
Winter
Criterion
L Aeq(15
min) dB1
Not winter
Criterion
Applies? 3
Wambo
L Aeq(15
min) dB
4,5
Exceedance
6,8
N01 2 22/12/11 15:01 4.1 -1.6 35 35 N IA NA
N03 2 15/11/11 13:48 3.1 -1.9 54 54 N IA NA
N16 15/11/11 14:50 4.1 -1.8 35 35 N IA NA
N23 15/11/11 15:17 4.4 -1.8 35 35 N IA NA
N24 15/11/11 10:02 3.6 -1.9 35 35 N IA NA
N01 2 15/12/11 02:01 0.7 4.1 41 35 N IA NA
N03 2 15/12/11 01:49 0.6 4.1 59 57 N IA NA
N16 14/12/11 22:27 1.5 -1.0 40 40 Y IA Nil
N23 14/12/11 23:29 1.3 -1.0 38 38 Y NM Nil
N24 15/12/11 02:38 0.3 4.1 41 41 N NM NA
Notes:
1. Development consent criterion;
2. Monitoring location is within Zone of Affectation. EIS or SEE modelled noise level presented;
3. The noise emission limits identified in the above table apply under meteorological conditions of:
- Wind speeds of up to 3 m/s at 10 metres above ground level; or
- Temperature inversion conditions of up to 3ºC/100m, and wind speeds of up to 2 m/s at 10 metres above
ground level.
4. Estimated or measured L Aeq dB attributed to WCM;
5. NM denotes WCM audible but not measurable, IA denotes inaudible;
6. NA in exceedance column means atmospheric conditions outside conditions specified in development consent and
so criterion is not applicable;
7. Vertical temperature gradient (VTG) calculated using sigma theta values according to INP procedures; and
8. Bold and red text indicate an exceedance of relevant criterion.
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