Appendix J - Peabody Energy

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Specific operational noise control measures incorporated in the noise model to meet specified SWL emissions and/or modelled levels at the nearest private receptors include: • Project surface construction activities to be restricted to daytime hours. • No off-site road haulage of product coal or coal reject during the evening or night-time periods (continuation of an existing Metropolitan Colliery operational noise control measure). • No haulage of coal reject between the CHPP and the temporary stockpile or between the CHPP and the backfill paste plant to be undertaken in the evening and night-time periods. • Use of broadband noise alarms on existing and future equipment adjusted to meet OHS requirements. The above measures would be implemented progressively eg conveyor upgrade and mitigation would not occur until after Year 3 (refer Initial Development Schedule). For the purposes of noise impact assessment, the design maximum LAeq SWLs are presented in Table 40 for all acoustically-relevant items of plant and equipment for the Project (once upgraded). Table 40 Project Plant Design Maximum LAeq Sound Power Levels (dBA re 10 pW) Equipment Coarse Washery Building Pumps and Compressors Capacity or Specification (or Equivalent) Mitigation (or Equivalent) and estimate reductions 600 tph Enclosure with minimum penetrations and absorptive lining - 10 dBA reduction 3 off High performance silencers - 10 dBA reduction Overall Design LAeq SWL 107 dBA 99 dBA/unit MD1 Conveyor Drive Cooling Fan Relocate fan to 91 dBA/unit enclosure - 20 dBA reduction MD1 Conveyor Drive 400 kW Partial enclosure or 95 dBA/unit nearfield barrier - 7 dBA reduction Transfer Conveyors 1000 tph Replace existing 96 dBA/100 m standard idlers with low noise idlers - 8 dBA reduction Paste Backfill Plant 75 tph Enclosure with minimum 100 dBA penetrations and absorptive lining - New plant Off-road Haul Trucks 30 t Modern low noise fleet 107 dBA/unit Front-end Loader CAT 988 110 dBA/unit Water Cart - 105 dBA/unit The Project, if approved, would provide for a further 25 years of operation of the Metropolitan Colliery. The extended life of the operation and the various surface facilities upgrade works would provide an opportunity to introduce further practicable noise controls as a component of the Project upgrades. 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 48
HCPL would implement a range of noise controls and/or purchase replacement low noise equipment and implement a continuous noise improvement programme to reduce noise emissions at the Metropolitan Colliery. The timing of the implementation of the noise controls would be dependant on the actual progressive development of the Project and the measures would be implemented in order to facilitate compliance with relevant noise specifications. 12.4 Intrusive Noise Impact Assessment The Metropolitan Colliery is a significant existing facility in close proximity to a range of residential receptors and other suburban landuses (refer <strong>Appendix</strong> D1). The Project upgrades to the major surface facilities area would not significantly change the location, nature or the main characteristics of the Metropolitan Colliery on-site noise emissions. Therefore, for comparative purposes, modelled intrusive noise predictions for the Project (Year 3 and Year 15) have been compared to modelled intrusive noise emissions for the existing Metropolitan Colliery for the daytime, evening and night-time periods as detailed in Section 8. 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 by significant margins (ie 10 dBA or more) at several of the nearest dwellings in Oxley Place and Parkes Street. Project noise levels at receivers near the Project boundary 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 quite significant noise reductions (by comparison with the existing Metropolitan Colliery) are predicted through the implementation of the Project noise controls, Project noise emissions would remain above the relevant intrusive noise assessment criteria at some of the nearest dwellings near the Project boundary. A summary of the number of privately owned dwellings where the project specific intrusive criteria are exceeded is presented in Table 41 for the daytime, evening and night-time periods. Table 41 Number of Private Dwellings with Intrusive Noise Project Specific Criteria Exceedances Period 1 to 2 dBA above project specific criteria Noise Management Zone 3 to 5 dBA above project specific criteria Noise Affectation Zone >5 dBA above project specific criteria Existing Year 3 Year 15 Existing Year 3 Year 15 Existing Year 3 Year 15 Daytime 10 6 8 6 4 11 15 13 2 Evening 1 4 8 5 11 6 29 16 12 Night-time - 4 5 9 10 7 25 15 10 Totals All Periods 1 Note 1: 1 2 8 5 9 6 29 20 14 The highest noise zone, in any period, is used to calculate the Totals for All Periods (i.e. if a dwelling is predicted to be within the noise management zone during the day and the noise affectation zone during the night – it is included in the noise affectation zone on this row). As shown in Table 41, the number of private residences in the Metropolitan Colliery noise affectation zone (ie >5 dBA above intrusive criteria) during the daytime, evening and night-time period (15, 29 and 25 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 (29) is predicted to be moderately reduced by Year 3 (to 20 residences) and be significantly reduced by Year 15 (to 14 residences). 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 49
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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: • Negligible noise level increase
Page 57 and 58: Similarly, ground vibration levels
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
Page 68 and 69: Appendix E1 Report 10-5055-R1 Page
Page 70 and 71: Appendix E1 Report 10-5055-R1 Page
Page 72 and 73: Appendix F1 Report 10-5055-R1 Page
Page 96 and 97: Appendix G1 Report 10-5055-R1 Page
Page 104 and 105:
Appendix G2 Report 10-5055-R1 Page
Page 106 and 107:
Page 108 and 109:
Page 110 and 111:
Appendix H Report 10-5055-R1 Page 1
Page 112 and 113:
6 217 000 N 35 314 000 E 315 000 E
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Appendix J - Peabody Energy

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