Draft National Wind Farm Development Guidelines - July 2010

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Table B-3 Recommended parameter values for ISO9613-2:1996 in Australia Parameter Recommended value Temperature 15ºC Air humidity 70% Atmospheric pressure 101.325 kPa Resulting atmospheric attenuation coefficients, dB/km Octave band centre frequency (Hz) 63 125 250 500 1k 2k 4k 8k 0.1 0.4 1.1 2.4 4.1 8.8 26.6 95.0 • Compliance assessment The detailed wind farm noise emission predictions should present LAeq levels at the relevant receivers. These predictions should be based on sound power level data described in terms of LAeq. The predictions should include an adjustment for noise characteristics if required by the relevant authority. These predicted noise emission levels should be compared with the noise level limits determined in accordance with Section B.4.2 to provide an assessment of compliance. • Uncertainty An assessment of the uncertainty of the selected prediction method should be carried out. Where there is significant uncertainty in the prediction, which is likely to increase the risk that actual wind farm noise emission will exceed the noise level limits, appropriate allowance should be made in the margin by which predicted noise emission satisfies the noise level limits. Provide input to wind farm design and turbine selection to achieve noise compliance Once the detailed noise emission prediction study is complete, some refinement of the wind farm design may be required to demonstrate compliance of predicted noise emission with the noise level limits. Possible areas of refinement include wind turbine number and layout, wind turbine type, wind turbine noise management settings, variable operation of the wind turbines for particular times of day and/or wind directions and wind speeds. Where refinement of the wind farm design is carried out, the consequences of this refinement on predicted noise emission should be advised to the proponent. Refinement should be ongoing until predicted noise emission satisfies the noise criteria. Community consultation Consultation with the community should be on-going during this phase. The results of background noise level monitoring, the final noise criteria and the results of the detailed noise predictions should be made available to the community and in particular to the relevant receiver where the monitoring occurred. Prepare noise impact assessment report The noise impact assessment report should include details of background noise monitoring (if required), establishing noise level limits and detailed noise emission predictions, including contours, and all other documentation requirements in accordance with Section 8 of AS4959–2010. Page 54 Draft National Wind Farm Development Guidelines – 2 July 2010
Prepare expert evidence (as required) Expert evidence should be prepared, as required, for presentation at a planning hearing. The evidence should be largely based on discussion and results provided in the noise impact assessment report. Any additional issues raised during submissions should also be addressed. B.4.3 Construction The design of the wind farm should be finalised prior to commencement of construction. This may require revisiting the noise impact assessment due to minor changes in turbine layout or changes in turbine type. Depending on the extent of changes, the relevant authority may require issue of a finalised noise impact assessment report to confirm compliance with the noise criteria for the finalised wind farm design. A set of complaints handling procedures should also be developed prior to commencement of construction. This should include procedures for handling complaints received firstly during construction, but also during operation of the wind farm and possibly also during decommissioning. Once construction begins, state regulations may require construction noise monitoring to be carried out. The tasks to be carried out during this phase are detailed below. Finalisation of wind farm design • Address planning permit conditions (as required) Where a planning permit is issued it may include provision for additional assessment work to be carried out or for clarification/additional details of the noise impact assessment to be provided to the relevant authority. Issues can include: Carrying out background noise level monitoring at additional receivers Revising noise emission predictions Any such outstanding issues should be addressed with the supplementary assessment information supplied to the relevant authority. • Finalise wind farm design A significant amount of time can elapse between granting a planning permit for a wind farm development and the preparation for commencement of works on site. During this time further minor changes to the wind farm design can be made. Likely changes may include: Finalising turbine type. Finalising wind farm layout. Finalising compliance with noise criteria and requirements for any noise management setting. Any such changes should be addressed and all new information consolidated into a finalised noise impact assessment report, if required, in order to complete all planning and design application issues prior to construction. • Address land use planning considerations In addition to finalising the noise impact assessment report, it is suggested that a set of contour maps be issued to the regulating authority showing the predicted contour of the minimum noise level limit. This may be used by the regulating authority to inform prospective buyers of real estate within the zone defined by the contour of the effects of the wind farm development. This may be particularly helpful during the period of Draft National Wind Farm Development Guidelines – 2 July 2010 Page 55
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EPHC National Wind Farm Development
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Acknowledgements These Guidelines h
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A.6.1 Site selection 28 A.6.2 Proje
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E.7 Technical discussion of key con
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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 and 56: Other noise-sensitive uses such as
Page 57 and 58: Table B-2 Existing state and territ
Page 59 and 60: Establish background noise monitori
Page 61 and 62: As noted in Section 6.3.1 of AS4959
Page 63: predicted levels are significantly
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
Page 107 and 108: Consider ‘Supporting Evidence’
Page 109 and 110: information available for other sit
Page 111 and 112: Figure C-4 Example of viewshed mapp
Page 113 and 114: 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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