Wambo Coal AEMR 2010-2011 - Peabody Energy

3 RESULTS3.1 Attended Noise Monitoring – Quarter 3, 20103.1.1 Wambo Coal Mine NoiseNoise levels generated by activity at Wambo are shown in Table 3.1 and Table 3.2, wherecomparison of measured L Aeq(15 minutes) and L A1(1 minute) levels for WCM is made withrelevant noise goals.Table 3.1 L Aeq(15 minute) dB GENERATED BY WCM AGAINST NOISE CRITERIA - QUARTER 3 2010LocationDate / StartTimeWindSpeed(m/s)VTG 7( 0 C/100m)CriterionL Aeq(15min) dB1WinterCriterionL Aeq(15min) dB1NotwinterCriterionApplies? 3WamboL Aeq(15min) dB4,5Exceedance6N01 2 20/09/10 12:41 2.5 -1.9 35 35 Y IA NilN03 2 20/09/10 13:34 3.3 -1.8 54 54 N IA NAN16 20/09/10 14:05 3.3 -1.8 35 35 N IA NAN23 20/09/10 14:33 3.6 -1.8 35 35 N IA NAN24 20/09/10 11:05 2.5 -1.8 35 35 Y IA NilN01 2 15/09/10 22:43 2.3 0.5 41 35 N 22 NAN03 2 15/09/10 23:17 1.2 3.0 59 57 N 43 NAN16 15/09/10 23:48 0.8 3.0 40 40 N NM NAN23 16/09/10 00:48 3.6 -1.0 38 38 N 23 NAN24 15/09/10 22:43 2.3 0.5 41 41 N IA NANotes: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 aboveground 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 andso criterion is not applicable;7. Vertical temperature gradient (VTG) calculated using sigma theta values according to INP procedures; and8. Bold and red text indicates an exceedance of relevant criterion.11263_R01.docPage 9