Appendix J - Peabody Energy

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12.5 Noise Amenity Impact Assessment As for the intrusive noise assessment, modelled amenity period noise predictions for the Project (Year 3 and Year 15) have been compared to modelled noise amenity levels for the existing Metropolitan Colliery for the daytime, evening and night-time periods as detailed in Section 9. Similarly, following the implementation of reasonable and feasible noise controls, the Project Year 3 and 15 noise levels reduce at all assessed receivers to the west and south of the site and some by significant margins (ie 10 dBA or more). Project noise levels at receivers to the north are generally predicted to remain unchanged due to the inclusion of train loading activities in the model, which are in close proximity and dominate noise emissions at these locations. While significant noise reductions are achievable through the implementation of potential noise controls, Project noise emissions would remain above the suburban noise amenity criteria at some of the nearest dwellings near the Project boundary. However, as discussed in Section 12.2, it is likely that some of the nearest dwellings to the Metropolitan Colliery boundary are within the urban/industrial interface noise amenity zone (where the relevant criteria are 10 dBA higher by comparison). A summary of the number of privately owned dwellings where the suburban noise amenity criteria is exceeded is presented in Table 42 for the daytime, evening and night-time periods. Table 42 Number of Private Dwellings with Amenity Noise Criteria Exceedances Period 1 to 2 dBA above acceptable amenity criteria Noise Management Zone 3 to 5 dBA above acceptable amenity criteria Noise Affectation Zone >5 dBA above acceptable amenity criteria Existing Year 3 Year 15 Existing Year 3 Year 15 Existing Year 3 Year 15 Daytime - - - - - - - - - Evening 5 5 2 9 - - 3 - - Night-time 8 5 5 10 12 10 14 3 - Total Residences in Noise Affectation Zone - All Periods 14 3 - As shown in Table 42, the number of private residences in the Metropolitan Colliery noise affectation zone (ie >5dBA above acceptable amenity criteria) during the evening and night-time periods (3 and 14 residences respectively) would be reduced significantly by the implementation of the Project. The total number of residences in the noise affection zone (all periods) for the existing operation (14), is predicted to be reduced to 3 during Year 3 and no exceedances of the acceptable amenity criteria are predicted for Year 15. 12.6 Blast Emission Impact Assessment Use of explosives is not required for existing or proposed general underground coal mining. Occasionally the existing continuous miner encounters geological structures that are broken up by using very low explosive masses. Airblast emission arising from underground blasting would propagate from the excavation site and release to the surface via the nearest ventilation shafts. But before reaching the surface, airblast noise is attenuated due to underground confinement. Airblast emissions arising from underground excavation blasting are predicted to meet the most stringent night-time criteria of 95 dBLpk at a distance of 360 m from the nearest ventilation shaft. As there are no residential dwellings located within 360 m from the proposed Ventilation Shaft No 4, airblast noise impacts are likely to be minimal (which is consistent with the existing Metropolitan Colliery excavation blasting practices). Heggies Pty Ltd Report Number 10-5055-R1 Revision 0 Metropolitan Coal Project Noise Impact Assessment Helensburgh Coal Pty Ltd (10-5055R1) 31 July 2008 Page 50
Similarly, ground vibration levels are predicted to meet the most stringent night-time criteria of 1 mm/s at a distance of 500 m from the blast site. As all excavation blasting is conducted at least 400 m below the surface, vibration impacts are likely to be minimal (which is also consistent with the existing Metropolitan Colliery excavation blasting practices and experience). 12.7 Road Traffic Noise Impact Assessment The existing site access and coal haulage routes remain unaltered by the Project and mine generated employee and materials traffic along these public roads are not increased significantly by the Project. Any Project related traffic noise impacts are therefore likely to be acceptable. On Lawrence Hargrave Drive, the maximum increase arising from the additional Project related traffic flow is only 0.4% during the construction and operation morning peak hour. The anticipated 0.4% increase in vehicle movements corresponds to a negligible (
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APPENDIX J METROPOLITAN COAL PROJEC
Page 3 and 4:
Metropolitan Coal Project Noise Imp
Page 5 and 6: TABLE OF CONTENTS 11 OFF-SITE TRANS
Page 7 and 8: 1 INTRODUCTION 1.1 Assessment Requi
Page 9 and 10: • HCPL to implement a continuous
Page 11 and 12: Table 2 Current and Proposed Hours
Page 13 and 14: Table 3 Nearest Potentially Affecte
Page 15 and 16: Table 5 Atmospheric Stability Frequ
Page 17 and 18: Table 8 Unattended Background Noise
Page 19 and 20: 4.4 Ambient Traffic Noise Monitorin
Page 21 and 22: Ideally, the intrusive noise emissi
Page 23 and 24: 5.4 Noise Impact Assessment Methodo
Page 25 and 26: Table 16 Fixed Plant Noise Audit -
Page 27 and 28: 6.5 Project Noise Model Scenarios T
Page 29 and 30: The PRP 12 Study concluded that whi
Page 31 and 32: 7.6 Continuous Noise Improvement Pr
Page 33 and 34: Existing Metropolitan Colliery Nois
Page 45 and 46: Table 27 Predicted Distance Require
Page 47 and 48: Table 31 Peak Hourly Existing and P
Page 49 and 50: Table 34 Midweek Existing and Cumul
Page 51 and 52: Table 38 Predicted Train Generated
Page 53 and 54: • Negligible noise level increase
Page 55: HCPL would implement a range of noi
Page 59: Appendix A1 Report 10-5055-R1 Page
Page 62 and 63: Initial Development Schedule Projec
Page 64 and 65: LARGE COAL CIRCUIT ROM Bin Dump Hop
Page 66 and 67: Zoning LEGEND Coal Lease Boundary M
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Appendix G2 Report 10-5055-R1 Page
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Appendix G2 Report 10-5055-R1 Page
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Appendix H Report 10-5055-R1 Page 1
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Appendix J - Peabody Energy

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