Draft National Wind Farm Development Guidelines - July 2010

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Establishing the minimum noise level limits for the various noise-sensitive receiver locations outlined above consistent with limit-setting documents published by the relevant authority; How to address cumulative development; Whether alternative noise criteria are permissible for stakeholders; and What penalties may apply for noise characteristics, in particular tonality. These issues are discussed below. • Establishing noise level limits The relevant authority will specify the noise level limits for the proposed development. The developer should consult the relevant authority at an early stage to confirm how the noise level limits will be set for the project. As noted above, these Guidelines recommend that the noise level limit framework be as defined in AS4959–2010 using A-weighted decibels, and include a minimum noise level limit (that is, a lower bound) and variation of the minimum noise level limit during periods of elevated background noise (a ‘background noise level +’ approach). At this stage of the project, where the emphasis is on identifying ‘relevant receivers’, the criteria of most interest are the minimum noise level limits. A summary of minimum noise level limits that are commonly applied across the different states and territories of Australia is provided in the following section. • Existing state and territory noise level limits A long term objective of these Guidelines is to provide explicit guidance on suitable noise level limits for wind farm development. The development of such guidance requires considerable coordination with existing state policies regarding noise emission in general and wind farm noise emission in particular. Until such guidance has been prepared, a summary of existing state and territory noise level limits is detailed in Table B-2. This summary is accurate at the time of publication of these Guidelines. It must be noted in reviewing the summary information that minimum noise level limits and other summarised information depends critically on the method used to assess compliance and this varies between jurisdictions and will also vary from these Guidelines. The summary information may be used as a rough guide to how noise criteria are currently set across states and territories. However, it may not be suitable to directly compare information across different jurisdictions as the associated assessment methods may vary. Page 46 Draft National Wind Farm Development Guidelines – 2 July 2010
Table B-2 Existing state and territory noise level limits State/ territory Guidance document for assessment Minimum noise level limit* Penalty for noise character istics Comments Australian Capital Territory - - - Wind farm guidance has not been prepared in ACT. (Details to be confirmed) New South Wales South Australia Environment Protection Authority Environmental noise guidelines: Wind farms, 2003 LAeq, 10 minutes 35 dB(A) 5dB Penalty applies for tonality only. No other characteristics are assessed directly. Northern Territory Queenslan d - - - There is no specific wind farm assessment document. Developments would likely be assessed on a case by case basis. - - - There is no specific guidance regarding wind farms. Developments would likely be assessed on a case by case basis. NZS6808:1998 and SA Guidelines 2003 have been referred to previously. South Australia Tasmania Victoria South Australia Environment Protection Authority Wind farms environmental noise guidelines 2009 Department of Primary Industries, Water and Environment (Tasmania), Noise measurement procedures manual, 2004 (TNMP) New Zealand Standard NZ 6808:1998 Acoustics – the Assessment and Measurement of Sound from Wind Turbine Generators LA90 35-40dB 5dB Penalty applies for tonality only. No other characteristics are assessed directly. - 5dB General guidance on the assessment of wind farm noise emission is provided in the TNMP but limits are not explicitly stated and would likely be assessed on a case by case basis. A 5dB penalty applies for one characteristic. The maximum penalty is 10dB. Amplitude modulation, Impulsiveness, Low frequency noise and tonality are considered. LA95 40dB 5dB In addition to NZ6808:1998 requirements, specific assessment of night time noise limits is required. The maximum penalty for noise characteristics is 5dB. Amplitude modulation, impulsiveness and tonality are considered. Western Australia Environmental Protection (Noise) Regulations 1997. EPA Guidance for the Assessment of LA10 35dB depending on zoning 5dB The WA noise regulations specify adjustments of 5dB for tonality and modulation and 10dB for impulsiveness to be added to the LA Slow level, to a maximum of 15dB. Draft National Wind Farm Development Guidelines – 2 July 2010 Page 47
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EPHC National Wind Farm Development
Page 5: Acknowledgements These Guidelines h
Page 8 and 9: A.6.1 Site selection 28 A.6.2 Proje
Page 10 and 11: E.7 Technical discussion of key con
Page 12 and 13: The 20/20 target is challenging; ho
Page 14 and 15: Table 1-1 Elements of a ‘wind far
Page 16 and 17: 2 Principles for responsible wind f
Page 18 and 19: 3 Wind Farm Specific Issues The spe
Page 20 and 21: Specific noise limits are not provi
Page 22 and 23: 3.5 Shadow flicker The issue Shadow
Page 24 and 25: Guidance notes Heritage issues are
Page 26 and 27: Table 4-1 Typical decision process
Page 28 and 29: The studies and community consultat
Page 31 and 32: A Community and Stakeholder Consult
Page 33 and 34: • Responsive There is a comm
Page 35 and 36: Figure A-1 IAP2 Public Participatio
Page 37 and 38: Specific components which should be
Page 39 and 40: Figure A-2 Example of Good Practice
Page 41 and 42: Recording the occurrence and outcom
Page 43 and 44: A.6.6 Decommissioning Planning & Co
Page 45 and 46: Potential Stakeholders Consultation
Page 47 and 48: B Noise B.1 Introduction This Appen
Page 49 and 50: the converse. These Guidelines reco
Page 51 and 52: The Standard should form the basis
Page 53 and 54: Stage and methodology Construction
Page 55: Other noise-sensitive uses such as
Page 59 and 60: Establish background noise monitori
Page 61 and 62: As noted in Section 6.3.1 of AS4959
Page 63 and 64: predicted levels are significantly
Page 65 and 66: Prepare expert evidence (as require
Page 67 and 68: Undertake unattended monitoring to
Page 69 and 70: assessment of wind farm noise emiss
Page 71 and 72: B.4.5 Decommissioning Noise-related
Page 73 and 74: If a significant amount of time has
Page 75 and 76: B.7 Technical discussion of key con
Page 77 and 78: The HGC Engineering report 10 also
Page 79 and 80: C Landscape C.1 Introduction This A
Page 81 and 82: • Cumulative impacts “Cumulativ
Page 83 and 84: C.2 Overview of Methodologies Figur
Page 85 and 86: C.3 Task Methodologies C.3.1 Projec
Page 87 and 88: • State Relevant State herita
Page 89 and 90: The preliminary landscape character
Page 91 and 92: • Identifying and describing (in
Page 93 and 94: Advanced photomontages should also
Page 95 and 96: C.4.2 Visual Impact Assessment The
Page 97 and 98: C.4.2.4 Assessment of cumulative im
Page 99 and 100: the implementation of agreed change
Page 101 and 102: Figure C-2 IBRA mapping of Australi
Page 103 and 104: Table C-4 Mapping of landscape char
Page 105 and 106: C.7.2 Levels of significance What a
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Consider ‘Supporting Evidence’
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information available for other sit
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Figure C-4 Example of viewshed mapp
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Figure C-6 Example of photomontages
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communicate broad-scale ideas and p
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Table C-5 Mapping other wind farms
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C.7.9 Glossary & acronyms Australia
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Viewpoint The point from which a vi
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D.1.2 Underlying approach The under
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All of the above is generally appli
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the operational wind farm is aimed
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D.4 Task methodologies D.4.1 Site S
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area as it was not collected accord
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used throughout these Guidelines as
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wind farms. Such data from existing
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considered acceptable, undesirable,
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construction phase are identified d
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Searches for dead birds and bats ar
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D.5 Cumulative impacts D.5.1 Defini
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in the absence of any turbine colli
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that it was first observed. Where m
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e the case that assessment for bats
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Department of Primary Industries, W
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Percival, S.M. 2003, Birds and wind
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E Shadow Flicker E.1 Introduction T
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• The use of recreational facilit
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• The method is inherently linked
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Table E-1 Recommended exposure limi
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E.4.4 Construction Assessment of th
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E.7 Technical discussion of key con
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Figure E-4 Variation in shading wit
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common practice varies between one
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as the actual limit, rather than th
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likely to be obstructed. Radiocommu
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Licensed radiocommunications servic
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Figure F-1 EMI mitigation methodolo
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F.4 Task methodologies F.4.1 Projec
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Expected timeframe for evaluation r
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The near field zone can be calculat
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Develop mitigation strategy As a st
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aseline RF survey which involves th
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G Wind Farm Development Process G.1
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Project Sub-stages Activities to be
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Preliminary Technical Studies Issue
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Planning application (PA2) The plan
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Develop mitigation strategy Finalis
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Environmental Management Plans Issu
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Monitoring: confirmation (O3) Confi
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Decommissioning (D2) Once a decisio
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Draft National Wind Farm Development Guidelines - July 2010

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