Wambo Coal AEMR 2010-2011 - Peabody Energy

4 SUMMARY OF COMPLIANCE4.1 SummaryNoise levels from WCM complied with the development consent criteria or modelled noiselevels at all sites during the 2010/2011 attended monitoring, with the exception of N01 inQuarter 4 2010. At N01, an exhaust continuum was audible throughout the measurement,generating an L Aeq of 37 dB, an exceedance of 2 dB. A surge in the continuum generated anL A1,1min of 41 dB.This exceedance is not considered significant as Chapter 11 of the OEH ‘Industrial NoisePolicy’ deems a development to be in non-compliance only when “the monitored noise level ismore than 2 dB above the statutory noise limit specified in the consent or license condition.”Noise levels from WCRS complied with the development consent criteria or modelled noiselevels at all sites during the 2010/2011 attended monitoring.It is noted that wind speeds and/or temperature inversion conditions were at levels greaterthan which development consent conditions would apply for WCM and WCRS activities insome instances. In most instances, the predicted EIS noise levels were met regardless.Six train passes (three loaded, and three empty) were measured at the Dyson property duringQuarter 2, 2011. Rail pass-by L Amax and L Aeq,24 hour results at the Dyson property were lessthan relevant limits.Monitoring was delayed several times during Quarter 2, 2011 due to train scheduling and thearrival of trains coinciding with acceptable meteorological conditions. As a result of trying tofind a suitable time to undertake WCRS monitoring, the Quarter 2 2011 survey was extendedinto August 2011.11263_R01.docPage 26