APPENDIX I: Noise Monitoring Data - Xstrata Coal Mangoola

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5 DISCUSSION 5.1 Noted Noise Sources Table 4.1 to Table 4.4 present data gathered during attended monitoring. These noise levels are the result of many sounds reaching the sound level meter microphone during monitoring. Received levels from various noise sources were noted during attended monitoring and particular attention was paid to the extent of Mangoola Coal’s contribution, if any, to measured levels. At each receptor location, Mangoola Coal’s L Aeq(15 minute) (in the absence of any other noise) was, where possible, measured directly, or, determined by frequency analysis. From these observations summaries have been derived for each location. The following report sections provide these summaries. Statistical 1/3 octave band analysis of environmental noise was undertaken, and the charts following in this section display the frequency ranges for various noise sources at each location for L A1, L A10 , L A90 , and L Aeq . These figures also provide, graphically, statistical information for these noise levels. An example is provided as Figure 2 where it can be seen that frogs and insects are generating noise at frequencies above 1000 Hz; mining noise is at frequencies less than 1000 Hz (this is typical). Adding levels at frequencies that relate to mining only allows separate statistical results to be calculated. This analysis cannot always be performed if there are significant levels of other noise at the same frequencies as mining; this can be dogs, cows, or, most commonly, road traffic. It should be noted that the method of summing statistical values up to a cut-off frequency can overstate the L A1 result by a small margin but is entirely accurate for L Aeq . 18 12509_R02.doc Page 18
Environmental Noise Levels 20 March 2004, 0306 hours TotL1 TotL10 TotLeq TotL90 L1 L10 Leq L90 70 65 60 55 50 Measured Noise Levels LA1 39 dB LA10 37 dB LAeq 35 dB LA90 32 dB dB(A) 45 40 35 30 Mine dragline fans, bucket noise, rear dump truck engine and transmission noise Insects Site Only Noise Levels LA10 34 dB LAeq 32 dB All statistics are 15min unless noted otherwise 25 Frogs 20 50 63 80 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 Total Frequency (Hz) Figure 2 Sample Graph 19 12509_R02.doc Page 19
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APPENDIX I: Noise Monitoring Data
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Mangoola Coal Environmental Noise M
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Table of Contents 1 INTRODUCTION...
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1 INTRODUCTION 1.1 Background Globa
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1.3 Terminology Some definitions of
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Mangoola Coal land acquisition crit
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4 RESULTS 4.1 Attended Noise Monito
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Table 4.3 compares measured levels
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Atmospheric condition data measured
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Environmental Noise Levels 20 March
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5.1.2 A2, 20 January 2012, Daytime
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5.1.4 A4, 20 January 2012, Daytime
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5.1.6 A1, 9 January 2012, Evening E
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5.1.8 A3, 9 January 2012, Evening E
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5.1.10 A5, 9 January 2012, Evening
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5.1.12 A2, 11 January 2012, Night E
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5.1.14 A4, 10 January 2012, Night E
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6 SUMMARY 6.1 Summary Global Acoust
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NSW Department of Planning Project
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Cumulative Noise Criteria Condition
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A.2 MANGOOLA COAL MINE ENVIRONMENT
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A P P E N D I X B . C A L I B R A T
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B.3 12027_R01.doc Page B.3
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B.5 12027_R01.doc Page B.5
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Mangoola Coal North Weather Station
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Date and Time Wind Speed m/sec Wind
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Table of Contents 1 INTRODUCTION...
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However, if site noise is noted as
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Table 4.7 MEASURED L Ceq,15 minute
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5 DISCUSSION 5.1 Noted Noise Source
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5.1.1 A1, 12 April 2012, Daytime En
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5.1.7 A2, 2 April 2012, Evening Env
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5.1.9 A4, 2 April 2012, Evening Env
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5.1.11 A1, 3 April 2012, Night Envi
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A P P E N D I X A . D EVELOPMENT CO
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Land Acquisition Criteria A.3 12158
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Additional Noise Mitigation Conditi
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A.7 12158_R01.doc Page A.7
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A P P E N D I X C . METEOROLOGICAL
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Table of Contents 1 INTRODUCTION ..
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has been addressed. The terms “In
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Table 4.7 MEASURED L Ceq,15 minute
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5 DISCUSSION 5.1 Noted Noise Source
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5.1.1 A1, 4 July 2012, Daytime Envi
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Page 179 and 180: Table 4.4 compares measured levels
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Page 211 and 212: A P P E N D I X C . M E T E O R O L
Page 221: MANGOOLA COAL QUARTER 4, 2012 MONIT
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APPENDIX I: Noise Monitoring Data - Xstrata Coal Mangoola

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