Wambo Coal AEMR 2010-2011 - Peabody Energy

3.3 Attended Noise Monitoring – Quarter 1, 20113.3.1 Wambo Coal Mine NoiseNoise levels generated by activity at Wambo are shown in Table 3.9 and Table 3.10, wherecomparison of measured L Aeq(15 minutes) and L A1(1 minute) levels for WCM is made withrelevant noise goals.Table 3.9 L Aeq(15 minute) dB GENERATED BY WCM AGAINST NOISE CRITERIA - QUARTER 1 2011LocationDate / StartTimeWindSpeed(m/s)VTG 7( 0 C/100m)CriterionL Aeq(15min) dB1WinterCriterionL Aeq(15min) dB1Not winterCriterionApplies? 3WamboL Aeq(15min) dB4,5Exceedance6,8N01 2 19/03/11 00:40 0.8 -1.0 41 35 Yes IA NilN03 2 19/03/11 02:41 0.7 3.0 59 57 No 40 NAN16 19/03/11 01:22 0.6 -1.0 40 40 Yes 26 NilN23 19/03/11 01:50 1.1 0.5 38 38 Yes 24 NilN24 18/03/11 23:52 1.1 -1.0 41 41 Yes IA NilN01 2 22/03/11 12:41 3.1 -1.9 35 35 No IA NAN03 2 22/03/11 12:18 2.8 -1.9 54 54 Yes IA NilN16 22/03/11 11:20 2.5 -1.9 35 35 Yes IA NilN23 22/03/11 10:55 1.3 -1.9 35 35 Yes IA NilN24 22/03/11 14:06 3.1 -1.9 35 35 No 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 17