Draft National Wind Farm Development Guidelines - July 2010

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Expected timeframe for evaluation response Observations and Engineering Branch Bureau of Meteorology PO Box 1289 Melbourne VIC 3001 Based both on the requirements of the proponent and on the priorities and work load of the responsible Bureau staff. The internal BoM policy under development may specify a set timeframe in which the proponent can expect a response. Telstra Known exclusion zone Criteria for notification Information required Contact details Expected timeframe for evaluation response Not specified Within the vicinity of Telstra infrastructure • Initial letter of intent to develop • Number of turbines • Heights of turbines • Coordinates of turbines locations • Diameter of blade • Diameter of pole Area Planner • Acknowledgement letter Area planner to ensure acknowledgement letter is sent out to developer within 2 days of receiving proposal. • Initial response letter Result of preliminary analysis to be summarised and sent out to wind farm proponent no later than 1.5 weeks from receipt of proposal from team leader. • Final response letter The time taken to send out a final response letter depends on the complexity of the project. The developer should be kept informed on a regular basis of the progress of the project if extended time is required. Department of Defence Known exclusion zone Criteria for notification Information required Contact details Expected timeframe for evaluation response • Sites which impacted on radar (this will be assessed on a caseby case basis • Locations within gazetted Defence Areas Control Regulations or infringing airfield Obstruction Clearance Surfaces (OCS) • Sites within any easements controlled by Defence or obstructing communications path (e.g. microwave links) • All wind farms on land or offshore • Map showing the location of the wind farm boundary extent • Site plans showing individual turbine locations, wind monitoring masts and associated electrical works • Construction details (turbine heights to blade tip zenith (in metres above ground level), number of turbines, construction materials, details of crane use, batching plant, etc) • Any aviation lighting plan • A description of any other structure to be built (including materials height AGL and lighting) • Any other information deemed relevant by Defence (e.g. timing of construction, construction crane information, potential wind farm expansion plans) • Land Planning and Spatial Information, LPSI.Directorate@defence.gov.au • Allow a minimum of 4-6 weeks for a response • More complex assessments may require additional time and information Page 174 Draft National Wind Farm Development Guidelines – 2 July 2010
Identify potentially affected services Having determined the licensed services in close proximity to the wind farm, received any early community input and reviewed any known exclusion zones for the organisations listed above, proponents can determine which services may be affected by the wind farm development. This involves a calculation of the distance between line-of-sight radio paths and the proposed wind farm, down to individual wind turbines if necessary, for any turbine (including blades) within a line-of-sight radio path or within close proximity to a broadcast site or if it may impact on the performance of a radar facility. The following distances are considered to be general exclusion zones outside which a wind turbine will not interfere with a radiocommunications service: • Obstruction to a radio line-of-sight path This is when the location of a wind turbine causes radiocommunications signals to be partially or fully obstructed, resulting in a reduction or loss of signal. It is generally accepted that effects from obstruction by wind turbines can be avoided by placing the turbines, including blades, outside the second Fresnel Zone of the line of sight path of a point to point radio link. This is a conservative approach. The second Fresnel zone at any point can be calculated and is dependent upon the frequency of the signal, the length of the radiocommunications path, and the distance of the particular point in question along the radiocommunications path. The maximum second Fresnel zone distance of a link occurs at the mid point along the path. The formula for calculating the second Fresnel zone distance at any given point is: F2 = 2λ d d 1 1 2 2 d + d where F2 λ = Second Fresnel zone radius = Wavelength in metres d1, d2 are distances from each end of radio path to the point under consideration • Obstruction to radar services line-of-sight Radar services may be affected by wind turbines hundreds of kilometres away if they are located within the radar operating range and line of sight.17 As a guide, long range 23cm (1300MHz) radars, such as those used for en-route surveillance, can have an operating range in the order of 200 nmiles (radius of search volume in nautical miles), a 10cm (3000MHz) approach radar 60 nmiles, and 3cm (9000MHz) final approach radar 15 nmiles. Individual radar operators will need to evaluate the development and advise whether there may be any potential impact on their services. • Near-field effects This occurs when a wind turbine is located in such close proximity to an antenna that it changes the characteristics of that antenna. Transmitting and receiving antennas have a “near-field” zone, which requires freedom from any object that can conduct or absorb radio waves. 17 CAP 764 provides a method for determining radar line-of-sight. Draft National Wind Farm Development Guidelines – 2 July 2010 Page 175
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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
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Table 1-1 Elements of a ‘wind far
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2 Principles for responsible wind f
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3 Wind Farm Specific Issues The spe
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Specific noise limits are not provi
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3.5 Shadow flicker The issue Shadow
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Guidance notes Heritage issues are
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Table 4-1 Typical decision process
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The studies and community consultat
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A Community and Stakeholder Consult
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• Responsive There is a comm
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Figure A-1 IAP2 Public Participatio
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Specific components which should be
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Figure A-2 Example of Good Practice
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Recording the occurrence and outcom
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A.6.6 Decommissioning Planning & Co
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Potential Stakeholders Consultation
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B Noise B.1 Introduction This Appen
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the converse. These Guidelines reco
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The Standard should form the basis
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Stage and methodology Construction
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Other noise-sensitive uses such as
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Table B-2 Existing state and territ
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Establish background noise monitori
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As noted in Section 6.3.1 of AS4959
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predicted levels are significantly
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Prepare expert evidence (as require
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Undertake unattended monitoring to
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assessment of wind farm noise emiss
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B.4.5 Decommissioning Noise-related
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If a significant amount of time has
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B.7 Technical discussion of key con
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The HGC Engineering report 10 also
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C Landscape C.1 Introduction This A
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• Cumulative impacts “Cumulativ
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C.2 Overview of Methodologies Figur
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C.3 Task Methodologies C.3.1 Projec
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• State Relevant State herita
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The preliminary landscape character
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• Identifying and describing (in
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Advanced photomontages should also
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C.4.2 Visual Impact Assessment The
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C.4.2.4 Assessment of cumulative im
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the implementation of agreed change
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Figure C-2 IBRA mapping of Australi
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Table C-4 Mapping of landscape char
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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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Page 140 and 141: construction phase are identified d
Page 142 and 143: Searches for dead birds and bats ar
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Page 148 and 149: that it was first observed. Where m
Page 150 and 151: e the case that assessment for bats
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Page 154 and 155: Percival, S.M. 2003, Birds and wind
Page 157 and 158: E Shadow Flicker E.1 Introduction T
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Page 167 and 168: E.7 Technical discussion of key con
Page 169 and 170: Figure E-4 Variation in shading wit
Page 171 and 172: common practice varies between one
Page 173: as the actual limit, rather than th
Page 176 and 177: likely to be obstructed. Radiocommu
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Page 180 and 181: Figure F-1 EMI mitigation methodolo
Page 182 and 183: F.4 Task methodologies F.4.1 Projec
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Page 188 and 189: Develop mitigation strategy As a st
Page 190 and 191: aseline RF survey which involves th
Page 193 and 194: G Wind Farm Development Process G.1
Page 195 and 196: Project Sub-stages Activities to be
Page 197 and 198: Preliminary Technical Studies Issue
Page 199 and 200: Planning application (PA2) The plan
Page 201 and 202: Develop mitigation strategy Finalis
Page 203 and 204: Environmental Management Plans Issu
Page 205 and 206: Monitoring: confirmation (O3) Confi
Page 207 and 208: Decommissioning (D2) Once a decisio
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Draft National Wind Farm Development Guidelines - July 2010

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