Kent Breeze Corporation. Noise Assessment Report. Kent Breeze Wind Farm and MacLeod Windmill Project H

Transcription

1 Kent Breeze Corporation Kent Breeze Wind Farm and MacLeod Windmill Project H May 14, 2010

2 Project Report Kent Breeze Corporation Kent Breeze Wind Farm and MacLeod Windmill Project DISTRIBUTION Teresa Newland Kent Breeze Corporation May 14, 2010 Table of Contents Report Disclaimer... iv Executive Summary... v 1. Introduction Project Layout Noise Sources Wind Turbine Generators Transformer Substation Adjustment to Wind Turbine Generator Acoustic Emissions for Wind Speed Profile Noise Sources and Locations Receptors Noise Impact Assessment Distance Requirement Impact of Adjacent Planned and Approved Wind Farms Assessment of Participating Receptors Prediction Metod Adjustment for Special Quality of Sound Specific Parameters Results and Compliance Presentation of Results Compliance References H , Rev. 0 Page ii Hatc 2010/05

3 List of Tables Kent Breeze Corporation - Kent Breeze Wind Farm and MacLeod Windmill Project Table 2.1 Project Layout Requirements Summary Table 3.1 Wind Turbine Acoustic Emissions Summary Table 3.2 Noise Sources Identification and UTM Coordinates Table 4.1 Point of Reception Locations Table 4.2 Participating Receptor Locations Table 6.1 Wind Turbine Noise Impact Summary - Points of Reception - Non-Participating Receptors Table 6.2 Wind Turbine Noise Impact Summary - Participating Receptors List of Appendices Appendix A - Project Layout Maps Appendix B - Wind Turbine Tecnical Literature Appendix C - Adjustment to Wind Turbine Generator Acoustic Emissions for Wind Speed Profile Appendix D - Noise Contour Drawing Appendix E - Noise Impact Sample Calculation H , Rev. 0 Page iii Hatc 2010/05

4 Report Disclaimer Tis report as been prepared by Hatc for te sole and exclusive use of Kent Breeze (te Client ) for te purpose of assisting te management of te Client in making decisions wit respect to te potential development of te Kent Breeze Wind Farm and Macleod Windmill Project and for attacment to teir application for a Renewable Energy Approval from te Ontario Ministry of te Environment (MOE) and may be used for tis purpose; but sall not be (a) used for any oter purpose, or (b) provided to, relied upon or used by any tird party. H , Rev. 0 Page iv Hatc 2010/05

5 Executive Summary A noise impact assessment on te Kent Breeze Wind Farm and te Macleod Wind Mill projects was carried out to determine compliance wit Ontario Ministry of Environment Noise Guidelines for Wind Farms (MOE 2008). Tese projects represent two planned wind farms adjacent to eac oter near te town of Tamesville, in te Regional Municipality of Catam-Kent, Ontario. Tey are collectively called Kent Breeze Wind Farms Tere are no oter planned or approved wind farms witin a 5 km radius of te project site. Information on real and potential receptors was gatered by te IBI Group and forwarded to Hatc along wit UTM coordinates for eac. Wind turbine locations were laid out for noise compliance and also compliance to te setbacks required by Ontario Regulation Wind turbine noise emissions were adjusted for te site s summer nigt-time wind sear wic is iger tan te manufacturers test site. Te result of tis adjustment meant tat only a single sound power level was applicable for all wind speeds required to be examined by te MOE. Te noise study documented in tis report concludes tat all receptors are compliant wit te Noise Guidelines (MOE 2008). Te maximum noise emission for a non-participating receptor at an existing dwelling is 40.0 db. Te maximum noise emission at a future dwelling placed on wat is now a vacant lot is 40.0 db. H , Rev. 0 Page v Hatc 2010/05

6 1. Introduction Kent Breeze Corporation as been awarded two Standard Offer contracts by te Ontario Power Autority for te supply of up to 10 MW of wind power eac into te local distribution network (27.6 kv). Te two projects are known as te Kent Breeze Wind Farm and Macleod Windmill Project and are located adjacent to eac oter in te Regional Municipality of Catam-Kent, approximately 10 km from te town of Tamesville, Ontario. Kent Breeze as filed a notice of commencement for te projects under te Environmental Assessment Act and as received a firm offer for wind turbines from General Electric (GE), teir 2.5xl model at a ub eigt of 85-m. (2.5 MW eac, 4 macines per project, 8 macines in total). Tis Noise Impact Assessment is a study required by te Ontario Ministry of te Environment (MOE) as a prerequisite for te issuance of a Renewable Energy Approval. H , Rev. 0 Page 1-1 Hatc 2010/05

7 2. Project Layout Te project layout presented in tis report meets two primary criteria: Noise compliance in accordance wit Noise Guidelines for Wind Farms (MOE, October 2008) Setback compliance per Ontario Regulation Since te publication of Noise Guidelines for Wind Farms, te Green Energy Act was implemented and required wind farms to meet certain setback rules. Tis project cose a minimum setback of 550 m from receptors as permitted by Ontario Regulation Te layout also complies wit te following: Setback from roads, railways 60 m (blade lengt + 10 m, see Table 2.1, item i) Lot line setback 85 m (ub eigt) Significant woodlot setback 120 m. Table 2.1 Project Layout Requirements Summary Item Description Report Location a) Geograpic Location of te Project Map 1 in Appendix A Study Area b) Locations of Wind Turbines Maps 1 to 4 in Appendix A c) Location of transformer substation or Switcing station only Map 5 in Appendix A switcing station d) Locations of all Receptors Maps 3 and 4 in Appendix A, and Tables 4.1 and 4.2 e) Property Boundaries Maps 1, 3, 4 in Appendix A f) Municipal Zoning and Land-Use Plans All properties on wic wind turbines are located are zoned agricultural. g) Topograpical Features Maps 2 and 5 in Appendix A ) Oter Wind Farms Kent Breeze and Macleod Windmills represent two adjacent proposed wind farms. Tere are no oter approved or planned wind farms witin 5 km of te project area. i) Renewable Energy Setback Compliance Compliance wit Ontario Regulation is sown on Map 4 in Appendix A. Te GE2.5xl macines will ave an 85-m ub eigt and 100-m rotor diameter. Blade lengt=rotor diameter divided by 2 (=50 m). H , Rev. 0 Page 2-1 Hatc 2010/05

8 3. Noise Sources 3.1 Wind Turbine Generators Make, Model and Hub Heigt GE 2.5xl, 85-m ub eigt Maximum Electrical Output Rating 2500 kw Range of Rotational Speeds 5-14 rpm Mode of Operation Te noise information provided in tis application (Appendix B) is for Normal Operating Mode (NO). Te GE 2.5xl can operate in noise reduced modes. Tis application is not based on any noise reduced mode of operation Sound Power Levels Refer to Product Acoustic Specifications in Appendix B Frequency Spectra in Octave Bands Refer to Product Acoustic Specifications in Appendix B Tonality Refer to Product Acoustic Specifications in Appendix B. Tere are no sound emissions defined as tonal by IEC standards. 3.2 Transformer Substation Te project does not ave a step-up transformer required to convert power to grid voltage. Te wind turbine generators produce power at local distribution system voltage and are connected to te grid at te two switcing stations located on Map 5 in Appendix A. 3.3 Adjustment to Wind Turbine Generator Acoustic Emissions for Wind Speed Profile GE Normal Operation noise emissions form te input data for te calculations of Adjusted Emissions Levels. Te adjustment metod is detailed in Appendix C. Two adjustments were made to te manufacturer's noise emissions, one for wind sear (0.42, summer 11p.m. to 7 a.m.) and te oter to increase eac of te apparent sound power levels by octave band by 0.9 db to account for te manufacturer s reported uncertainty. Te A-weigted sound power level used in modeling is dba re W for normalized wind speeds ranging from 6 to 10 m/s at 10-m eigt. H , Rev. 0 Page 3-1 Hatc 2010/05

9 3.3.1 Wind Turbine Acoustic Emissions Summary Kent Breeze Corporation - Kent Breeze Wind Farm and MacLeod Windmill Project Table 3.1 Wind Turbine Acoustic Emissions Summary Make and Model GE 2.5 xl Electrical Rating (kw) 2500 Hub Heigt (m) 85 Wind Sear Coefficient 0.42 Octave Band Apparent Sound Power Level LwA (dba re 1E-12W) Manufacturer's Emissions Levels Adjusted Sound Power Levels Wind Speed (m/s) Frequency (Hz) [1] A-weigted [1] Te maximum noise emission 3.4 Noise Sources and Locations Wind turbine identification and teir coordinates are given in Table 3.2. Coordinates are in Universal Transverse Mercator (UTM) NAD83, Zone 17. Refer also to te maps in Appendix A. During project development turbines Kent 2 and MacLeod 2 were deleted from te layout. Tis is te reason wy turbines are not sequentially numbered. Table 3.2 Noise Sources Identification and UTM Coordinates Project Name: Kent Breeze Wind Farms and Macleod Windmill Project Equipment Make and UTM Coordinates Identifier Model X (Easting) Y (Norting) Remarks Kent-1 GE 2.5xl Kent-2 Deleted Kent-3 GE 2.5xl Kent-4 GE 2.5xl Kent-5 GE 2.5xl Macleod-1 GE 2.5xl Macleod-2 Deleted Macleod-3 GE 2.5xl Macleod-4 GE 2.5xl Macleod-5 GE 2.5xl H , Rev. 0 Page 3-2 Hatc 2010/05

10 4. Receptors Te project's receptor list is included in Tables 4.1 and 4.2. Receptor locations were provided by te IBI Group, London, Ontario. "Potential" receptors refer to receptors on vacant lots. Location of te receptor on tese lots was by IBI. All of te vacant lots are very large and tere are multiple locations were a dwelling may reasonably be expected to be located. In all cases, te location provides te prospective dwelling builder at least a 100 m x 100 m building envelope on a portion of te vacant land tat would reasonably be expected to contain a dwelling and conforms to te municipal zoning bylaws in effect. Tere is one "Participating Receptor" (Number 19). It is a ouse on land controlled by te proponent (Kent Breeze Corporation). H , Rev. 0 Page 4-1 Hatc 2010/05

11 Table 4.1 Point of Reception Locations Kent Breeze Corporation - Kent Breeze Wind Farm and MacLeod Windmill Project Point of Reception UTM Coordinates Point of UTM Coordinates Point of UTM Coordinates Point of UTM Coordinates ID Description X Y Reception ID Description X Y Reception ID Description X Y Reception ID Description X Y 1 Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling Dwelling H , Rev. 0 Page 4-1 Hatc 2010/05

12 Point of Reception UTM Coordinates Point of Reception UTM Coordinates Point of Reception UTM Coordinates Point of Reception UTM Coordinates ID Description X Y ID Description X Y ID Description X Y ID Description X Y 178 Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Dwelling Potential Receptor (Vacant Lot) Potential Receptor (Vacant Lot) Table 4.2 Participating Receptor Locations Point of Reception UTM Coordinates ID Description X Y 19 Dwelling (Participating) H , Rev. 0 Page 4-2 Hatc 2010/05

13 5. Noise Impact Assessment 5.1 Distance Requirement Several receptors are witin 1500 m of a wind turbine. In addition, noise from te wind turbine is in excess of 102 dba. Per te requirements of MOE 2008 and Ontario Regulation , a "detailed noise impact assessment" was carried out for all receptors identified witin te project area. 5.2 Impact of Adjacent Planned and Approved Wind Farms Te Kent Breeze Wind Farm and Macleod Windmill project represent two adjacent planned wind farms. Tey are assessed togeter. Tere are no oter planned or approved wind farms witin 5 km of te project area. 5.3 Assessment of Participating Receptors Noise impact on te one "participating" receptor is calculated and presented in tis report. 5.4 Prediction Metod Predictions of te total sound power level at a point of reception were carried out using CADNA-A software (version ) wic is based on te metods described in standard ISO A sample calculation for a source to receiver pair is included in Appendix E. 5.5 Adjustment for Special Quality of Sound Adjustment due to tonal nature of sound is not required based on te data provided by GE (wic is based on IEC Declaration of Apparent Sound Power Level and Tonality Values). 5.6 Specific Parameters Integer Wind Speed Values Calculations were carried out for integer wind speed of 6 m/s (at 10-m eigt) for te summer nigttime scenario (te Adjusted Emission Levels in Table 3.1). At 6 m/s and iger, eac turbine is emitting its maximum noise and terefore te noise emissions for 7 to 10 m/s (at 10-m eigt) are te same as te 6-m/s case Atmosperic Absorption Atmosperic absorption coefficients used by CADNA-A conform to ISO and are tose listed in MOE 2008 Table 2 (wic are based on 10 C and 70% relative umidity) Ground Attenuation A global value of 0.7 for ground attenuation was used. H , Rev. 0 Page 5-1 Hatc 2010/05

14 6. Results and Compliance 6.1 Presentation of Results Noise impacts at eac Point of Reception are provided in Tables 6.1 and 6.2. A map sowing noise contours is included in Appendix D (one map, for te 6-m/s, summer nigt-time case, applicable for all integer values of wind speeds at 10-m eigt from 6 to10 m/s). 6.2 Compliance Compliance to te requirements of MOE 2008, Table 1 (40.0 dba or less at 6 m/s 10-m eigt) is met for all points of reception. Maximum noise at an existing dwelling tat is non-participating is 40.0 dba (receptor 211). Maximum noise at a receptor placed on a vacant lot is 40.0 dba (number 259). Noise impacts at iger wind speeds (7 to 10 m/s at 10-m eigt) are te same as te 6 m/s case and are all compliant wit MOE H , Rev. 0 Page 6-1 Hatc 2010/05

15 Table 6.1 Wind Turbine Noise Impact Summary - Points of Reception - Non-Participating Receptors Point of Reception ID Description Heigt (m) Distance to Nearest Turbine Nearest Turbine ID Calculated Sound Level at Selected Wind Speeds Sound Level Limit (dba) 6 to 10 m/s (dba) 6 m/s 7 m/s 8 m/s 9 m/s 10 m/s 1 Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod H , Rev. 0 Page 6-1 Hatc 2010/05

16 Table 6.1 Wind Turbine Noise Impact Summary - Points of Reception - Non-Participating Receptors Point of Reception ID Description Heigt (m) Distance to Nearest Turbine Nearest Turbine ID Calculated Sound Level at Selected Wind Speeds Sound Level Limit (dba) 6 to 10 m/s (dba) 6 m/s 7 m/s 8 m/s 9 m/s 10 m/s 30 Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent H , Rev. 0 Page 6-2 Hatc 2010/05

17 Table 6.1 Wind Turbine Noise Impact Summary - Points of Reception - Non-Participating Receptors Point of Reception ID Description Heigt (m) Distance to Nearest Turbine Nearest Turbine ID Calculated Sound Level at Selected Wind Speeds Sound Level Limit (dba) 6 to 10 m/s (dba) 6 m/s 7 m/s 8 m/s 9 m/s 10 m/s 58 Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod H , Rev. 0 Page 6-3 Hatc 2010/05

18 Table 6.1 Wind Turbine Noise Impact Summary - Points of Reception - Non-Participating Receptors Point of Reception ID Description Heigt (m) Distance to Nearest Turbine Nearest Turbine ID Calculated Sound Level at Selected Wind Speeds Sound Level Limit (dba) 6 to 10 m/s (dba) 6 m/s 7 m/s 8 m/s 9 m/s 10 m/s 86 Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod H , Rev. 0 Page 6-4 Hatc 2010/05

19 Table 6.1 Wind Turbine Noise Impact Summary - Points of Reception - Non-Participating Receptors Point of Reception ID Description Heigt (m) Distance to Nearest Turbine Nearest Turbine ID Calculated Sound Level at Selected Wind Speeds Sound Level Limit (dba) 6 to 10 m/s (dba) 6 m/s 7 m/s 8 m/s 9 m/s 10 m/s 114 Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod H , Rev. 0 Page 6-5 Hatc 2010/05

20 Table 6.1 Wind Turbine Noise Impact Summary - Points of Reception - Non-Participating Receptors Point of Reception ID Description Heigt (m) Distance to Nearest Turbine Nearest Turbine ID Calculated Sound Level at Selected Wind Speeds Sound Level Limit (dba) 6 to 10 m/s (dba) 6 m/s 7 m/s 8 m/s 9 m/s 10 m/s 142 Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent H , Rev. 0 Page 6-6 Hatc 2010/05

21 Table 6.1 Wind Turbine Noise Impact Summary - Points of Reception - Non-Participating Receptors Point of Reception ID Description Heigt (m) Distance to Nearest Turbine Nearest Turbine ID Calculated Sound Level at Selected Wind Speeds Sound Level Limit (dba) 6 to 10 m/s (dba) 6 m/s 7 m/s 8 m/s 9 m/s 10 m/s 170 Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Macleod Dwelling Macleod Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Kent Dwelling Macleod Dwelling Macleod Dwelling Macleod H , Rev. 0 Page 6-7 Hatc 2010/05

22 Table 6.1 Wind Turbine Noise Impact Summary - Points of Reception - Non-Participating Receptors Point of Reception ID Description Heigt (m) Distance to Nearest Turbine Nearest Turbine ID Calculated Sound Level at Selected Wind Speeds Sound Level Limit (dba) 6 to 10 m/s (dba) 6 m/s 7 m/s 8 m/s 9 m/s 10 m/s 198 Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Macleod Dwelling Kent Dwelling Kent Dwelling Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod H , Rev. 0 Page 6-8 Hatc 2010/05

23 Table 6.1 Wind Turbine Noise Impact Summary - Points of Reception - Non-Participating Receptors Point of Reception ID Description Heigt (m) Distance to Nearest Turbine Nearest Turbine ID Calculated Sound Level at Selected Wind Speeds Sound Level Limit (dba) 6 to 10 m/s (dba) 6 m/s 7 m/s 8 m/s 9 m/s 10 m/s 226 Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent H , Rev. 0 Page 6-9 Hatc 2010/05

24 Table 6.1 Wind Turbine Noise Impact Summary - Points of Reception - Non-Participating Receptors Point of Reception ID Description Heigt (m) Distance to Nearest Turbine Nearest Turbine ID Calculated Sound Level at Selected Wind Speeds Sound Level Limit (dba) 6 to 10 m/s (dba) 6 m/s 7 m/s 8 m/s 9 m/s 10 m/s 254 Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Macleod Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent H , Rev. 0 Page 6-10 Hatc 2010/05

25 Table 6.1 Wind Turbine Noise Impact Summary - Points of Reception - Non-Participating Receptors Point of Reception ID Description Heigt (m) Distance to Nearest Turbine Nearest Turbine ID Calculated Sound Level at Selected Wind Speeds Sound Level Limit (dba) 6 to 10 m/s (dba) 6 m/s 7 m/s 8 m/s 9 m/s 10 m/s 282 Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Kent Potential Receptor (Vacant Lot) Macleod Table 6.2 Wind Turbine Noise Impact Summary - Participating Receptors Point of Reception ID 19 Description Dwelling (Participating) Heigt (m) Distance to Nearest Turbine Nearest Turbine ID Calculated Sound Level at Selected Wind Speeds 6 to10 m/s (dba) Macleod H , Rev. 0 Page 6-11 Hatc 2010/05

26 7. References [MOE 2008] Ontario Ministry of Environment, Noise Guidelines for Wind Farms, October [GE 2009 Sound] GE Energy, Commercial Documentation Wind Turbine Generator Systems GE 2.5xl 60Hz, Product Acoustic Specifications, Canada Specific, Normal Operation According to IEC International Organization for Standardization, ISO , Acoustics - Attenuation of Sound During Propagation Outdoors - Part 2: General Metod of Calculation, December 15, Canadian Standards Association / National Standard of Canada, CAN/CSA-C , Wind Turbine Generator Systems - Part 11: Acoustic Noise Measurement Tecniques, H , Rev. 0 Page 7-1 Hatc 2010/05

27 Appendix A Project Layout Maps H , Rev. 0 Hatc 2010/05

28 Kent Breeze Wind Farms & Macleod Windmill Project Environmental Assessment 1 ZONE 1 RD DEW DROP RD MAGNAVILLA LINE Tamesville!!!!!!!!!! RIVER LINE CON 1 Kent-1 Kent-4 Kent-3 Macleod-1 Kent-5 Macleod-5 Macleod-4 Macleod-3 O Kilometres (11x17 Layout) 1:30,000 Study Area ª Key Map : Municipality of Catam-Kent Map 1 Project Areas & Study Area Legend Turbine! Project Area Study Area Parcel Significant Woodlot (As per Official Plan) Oter Vegitation Private Airstrip Utility Line Railroad April 30, 2010 FYSH LINE SCANE RD FLORENCE RD EVERGREEN LINE BRICK RD SMOKE LINE OAKDALE RD SPLINTER LINE HUFFS SD RD BASE LINE!!!!!!!!!! LONGWOODS RD BEAR CREEK RD MASON LINE KENT BRIDGE RD PIONEER LINE MERRITT LINE WABASH LINE CRAFTS LINE DARRELL LINE FULLER RD J:\20443\5.8 GIS\Maps\Map Created For Suncore \PMMkentbreeze_map mxd

29 Kent Breeze Wind Farms & Macleod Windmill Project Environmental Assessment 1 ZONE 1 RD Tamesville RIVER LINE LOT 5 LOT 4 LOT 6 LOT 7 LOT 8 LOT 9 LOT 10 LOT 11 LOT 12 CON 1 BF CON 1 CON 2 LOT 2 CON 3 LOT 23 LOT 3 LOT 1 CON 4 LOT 24 LOT 22 LOT 21 CON 9 Kent-1 Kent-3 Kent-4 Macleod-1 Kent-5 Macleod-5 Macleod-4 Macleod-3 ª Key Map : Municipality of Catam-Kent INDUSTRIAL RD DEW DROP RD Legend Turbine Map 2 Aerial Poto Project Area Study Area O Kilometres (11x17 Layout) 1:30,000 Study Area Significant Woodlot (As per Official Plan) Oter Vegitation Aerial Poto: Catam - Kent Orto 2006 April 30, 2010 FYSH LINE SCANE RD EVERGREEN LINE MAGNAVILLA LINE BRICK RD SMOKE LINE OAKDALE RD HUFFS SD RD LONGWOODS RD SPLINTER LINE BASE LINE MASON LINE WABASH LINE PIONEER LINE CRAFTS LINE DARRELL LINE J:\20443\5.8 GIS\Maps\Map Created For Suncore \PMMkentbreeze_map mxd

30 J:\20443\5.8 GIS\Maps\Map Created For Suncore \PMMkentbreeze_map mxd CON 9 DARRELL LINE FULLER RD WABASH LINE CRAFTS LINE PIONEER LINE MERRITT LINE MASON LINE LOT 23 BASE LINE CON 4 KENT BRIDGE RD LOT 1 LOT 5 LOT 21 LOT 22 LOT 24 CON SPLINTER LINE LOT 2 LOT 3 BEAR CREEK RD CON HUFFS SD RD Removed Turbine Kent Kent-1 CON 1 g OAKDALE RD Kent-4 68 Kent-5 69 SMOKE LINE Macleod LOT 4 LOT 6 LOT 7 LOT 8 LOT 9 LOT 10 LOT 11 LOT BF BRICK RD Macleod-5 g EVERGREEN LINE Macleod-4 Removed Turbine Macleod MAGNAVILLA LINE LONGWOODS RD CON FLORENCE RD RIVER LINE SCANE RD DEW DROP RD ZONE 1 RD LOT 13 LOT 14 LOT FYSH LINE Tamesville Kent Breeze Wind Farms & Macleod Windmill Project Environmental Assessment ª Key Map : Municipality of Catam-Kent O Kilometres (11x17 Layout) 1:30,000 Study Area Map 3 Receptor Locations Legend Turbine Turbine! g April 30, km Turbine Buffer 2km Turbine Buffer Points of Reception - Existing Dwelling, Participating Points of Reception - Vacant Lot Points of Reception - Existing Dwelling, Non Participating Project Area Study Area Parcel Private Airstrip Significant Woodlot (As per Official Plan) Oter Vegetation Utility Line

31 J:\20443\5.8 GIS\Maps\Map Created For Suncore \PMMkentbreeze_map mxd \ \ \ \ \ \ \ \ \ \ \ 216 Kent SPLINTER LINE Kent-1 Removed Turbine HUFFS SD RD g Kent-4 Kent \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ Macleod SMOKE LINE g 18 Removed Turbine 26 Macleod-4 EVERGREEN LINE Macleod Macleod-5 LONGWOODS RD Kent Breeze Wind Farms & Macleod Windmill Project Environmental Assessment Legend Turbine g Removed Turbine Points of Reception - Existing Dwelling, Non Participating Points of Reception - Vacant Lot Points of Reception - Existing Dwelling, Paticipating 85m Lot Line Setback 60m Road / Railway Setback 550m Off Site Receptor Setback Building_Envelope Significant Woodlot (As per Official Plan) Oter Vegetation 120m Significant Woodlot Setback Project Area \ Utility Line Contour Line Railroad Road Watercourse April 30, 2010 Key Map : Municipality of Catam-Kent Metres Study Area Map 4 Renewable Energy Approval Setbacks 1:15,000 (11 X 17 Layout) ª O

32 ! Legend Turbine Access Road Underground Cable Utility Line Significant Woodlot (As per Official Plan) Oter Vegitation Contour Line Railroad Road Watercourse BENJAMIN DRAIN EVERGREEN LINE LIBERTY DRAIN LONGWOODS RD!!!!!!!!!!! SMOKE LINE SPLINTER LINE HUFFS SD RD BARNHART DRAIN MASON DRAIN IN DOBSO N DRA!!!!!!! COURTNEY DRAIN Kent-3 Kent-1 Macleod-1 Kent-5 Kent-4 Macleod-4 Macleod-3 Macleod-5 Kent Breeze Wind Farms & Macleod Windmill Project Environmental Assessment Metres Study Area Key Map : Municipality of Catam-Kent Map 5 Project Infrastructure 1:15,000 (11 X 17 Layout) ª O KENT SWITCHING STATION MACLEOD SWITCHING STATION DIRECT DRILL UNDER DRAIN DIRECT DRILL UNDER DRAIN DIRECT DRILL UNDER TRACKS DIRECT DRILL UNDER TRACKS DIRECT DRILL UNDER ROAD April 30, SHAW F ERGUSON DRAIN J:\20443\5.8 GIS\Maps\Map Created For Suncore \PMMkentbreeze_map mxd

33 Appendix B Wind Turbine Tecnical Literature H , Rev. 0 Hatc 2010/05

34 GE Energy Commercial Documentation Wind Turbine Generator Systems GE 2.5xl - 60 Hz Product Acoustic Specifications Canada Specific Normal Operation according to IEC GE imagination at work 2009 GE Company. All rigts reserved.

35 2.5xl Noise information

36

37 Appendix C Adjustment to Wind Turbine Generator Acoustic Emissions for Wind Speed Profile H , Rev. 0 Hatc 2010/05

38

39 Rev 1 Kent Breeze Wind Farm and Macleod Windmill Project Metod For Adjusting GE's Apparent Sound Power Levels Per MOE Requirements Calculation By: R. Skinner Cecked: J. Moran Date: May 11, Background 1.1 MOE Noise Guidelines require te Manufacturer's Emissions Levels to be adjusted to reflect summer nigt-time conditions. Te manufacturer in tis case is GE, teir 2.5xl model, at 85 m ub eigt. Manufacturer's data [1] is presented two ways: 1. Maximum apparent sound power levels ("A" weigted), by normalized wind velocities (experienced at 10m). 2. Octave band power spectra, 63 to 8000 z, by normalized wind velocities (10m) 1.2 Tis calculation walks te reader troug te steps used to arrive at "Adjusted Emission Levels" in Table 3.1 of te Adjustment is required for two reasons: 1. Te underlying wind sear tat formed te basis for te manufacturer noise data is different tan te summer nigt wind sear at tis site. 2. Manufacturer's noise emissions by octave band did not include uncertainty, tis is added. [1] Commercial Documentation, Wind Turbine Generator Systems GE2.5xl - 60 Hz, Product Acoustic Specifications, Canada Specific, Normal Operation According to IEC Calculations 2.1 Step 1: Obtain te relationsip between sound power level and wind speeds at ub eigt in Manufacturer's Data Calculate te wind speeds at ub eigt tat correspond to te publised noise figures expressed at wind speeds at 10m eigt. Assume logaritmic profile wit a rougness lengt of Logaritmic Profile defined as: u/ur = ln(z/z0) / ln(zr/z0) were Data and Results (calculated results are in bold) u = windspeed at ub eigt (m/s) (calc) ur = windspeed at reference eigt zr (m/s) z = ub eigt (m) z0 = rougness lengt (m) GE Apparent Sound Power Level (dba) Derived from Octave Band Spectra Data Maximum Sound Power Level Normal Operation Apparent Sound Power Level Wind Speed at 85m Hub Heigt Power law relationsip is also calculated (for information): Power law (wind sear calculation): u/ur = z/zr^alpa were Data and Results (calculated results are in bold) u = windspeed at ub eigt (m/s) (calc) ur = reference windspeed at eigt zr (m/s) z = ub eigt (m) zr = reference eigt (m) alpa = wind sear coefficient

40 Rev 1 Kent Breeze Wind Farm and Macleod Windmill Project Metod For Adjusting GE's Apparent Sound Power Levels Per MOE Requirements Calculation By: R. Skinner Cecked: J. Moran Date: May 11, Step 2 - Calculate wind sear for summer nigt-time case Average Velocity For Period: June 21 to Sept 20, 11pm to 7am data: West Sout WS_40m WS_60m WS_80m WS_80m were: WS - wind speed West - west anemometer Rows wit Data (A) Sout - sout anemometer Sum of Rows wit Data (B) Average WindSpeed (B/A) Wind Data Used See te attacment to tis calculation for information on te wind measurement campaign and a selection of te wind data used. Te entire summer wind data set consists of over rows of data and is not printed wit tis calcualation Curve Data To Use: Hub Heigt (m) Wind Speed (m/s) Curve Fit: Power Log Law Law Ref Heigt, m Speed, m/s Alpa or Zo variables: Alpa Z0, m Power Log Power Log Law Law Average Law Law Heigt Calc'd Calc'd For Period Error Error m m/s m/s m/s Note to user: iterate until targets are reaced and error minimized Comment on result - tis analysis cose to curve fit te wind sear between 60 and 80 m (minizing te interpolation error at 60m). 2.3 Step 3 Use summer nigt-time wind sear to calculate wind velocity at ub eigt and corresponding velocity at 10m eigt. Using wind sear calculated above, calculate velocity at 10 m eigt tat would correspond to 10.9 m/s at ub eigt; tis is te wind speed tat produces te maximum noise. Tis is obtained by power law metod, below: Hub eigt (m) Speed, m/s wind sear Heigt Calc'd Calc'd m m/s m/s At a wind speed of 4.4m/s (10m eigt), te macine produces its maximum noise.

41 Rev 1 Kent Breeze Wind Farm and Macleod Windmill Project Metod For Adjusting GE's Apparent Sound Power Levels Per MOE Requirements Calculation By: R. Skinner Cecked: J. Moran Date: May 11, Manufacturer's Noise Emissions Adjusted for Wind Sear For modeling purposes, use GE's maximum noise emissions for all wind speed at 10m 6m/s or greater wit a summer nigt wind sear of Step 4 - Revise manufacturer's data by octave band levels to matc its maximum apparent sound power levels adjusted for wind sear To adjust measured emissions to values used for modeling, 0.9 db was added to eac apparent sound power level by frequency band to account for uncertainty. Vendor's igest noise emission occurs at V10 8m/s (in a wind sear situation) Normalized Speed Speed 8 m/s 8 m/s LwA LwA Normalized Wind Speed - at 10m eigt Frequency (Hz) NO NO.adj LwA - Apparent Sound Power Level (dba re 1E-12) SPL - sound power level NO - normal operations adj - adjusted to account for uncertainty GE NO - Normal operations GE2.5xl measured apparent sound power level and octave band apparent sound power level at te stated normalized wind speed (at 10m) Apparent SPL dba Generate te Wind Turbine Acoustic Emissions Summary (Table 3 of MOE's Noise Guidelines document) Table C.1 Wind Turbine Acoustic Emissions Summary Make and Model: GE 2.5xl Electrical Rating (kw): 2500 Hub Heigt (m) 85 Wind Sear Coefficient 0.42 Octave Band Sound Apparent Power Level LwA (dba re 1E-12W) Manufacturer's Emissions Levels (dba ref 10^-12) Adjusted Emissions Levels V10 Wind Speed (m/s) Frequency (Hz) [1] Apparent SPL dba Note [1] Only te manufacturer's maximum noise emissions were modeled. [2] Tis table is also Table 3.1 of te main report. 3. Conclusions and Summary In a wind sear of.42, te wind turbine experiences winds of 10.9 m/s at ub eigt wen te V10m speed is 4.4m/s. At tis ub eigt velocity te macine produces its maximum noise. Noise impacts at V10 speeds of 6-10m/s, under a summer nigt wind sear are required to be modeled. Te sound power level for te GE 2.5xl macine actually goes down after passing troug its maximum at 10.9m/s ub velocity. To be conservative, te sound modeled was te macine's maximum for all wind speed cases (V10m = 6 to 10m/s). In addition, te manufacturer's octave band power spectra was adjusted upwards by 0.9dB eac so tat wen aggregated into a single A-weigted value, te total is 105.1dBA. Te 0.9dB adjustment = te uncertainty in teir noise emissions data reported by GE. To sum up ten, two adjustments were made to te manufacturer's noise emissions, one for wind sear, and te oter to manufacturer's octave band sound power level data. Te A-weigted noise to be modelled is dba for wind speeds >= 6 m/s at 10m eigt and summer nigt wind sear of 0.42.

42 Kent Breeze Wind Farm and Macleod Windmill Project Wind Measurement Data Attacment to Calculation: Metod For Adjusting GE's Apparent Sound Power Levels Per MOE Requirements Calculation By: R. Skinner Cecked: J. Moran Date: May 11, 2010 Note to User - See columns Y-AB for data manipulation to filter for "nigt" (10pm to 7am). ZEPHYR NORTH - TN2 PROGRAM SERIES Kent Breeze Wind Monitoring Period: 2009 June 21 0:00 to 2009 Sept 20 23:50 Location: DeMeter 80 m WM (DMtr) Fields in eac record are as follows: 1. Year 2. Mont 3. Day 4. Hour and minute as mm 5. Wind Speed W (m/s) at m 6. Std.Dev. Wind Speed W (m/s) at m 7. Gust Wind Speed W (m/s) at m 8. Wind Speed W (m/s) at m 9. Std.Dev. Wind Speed W (m/s) at m 10. Gust Wind Speed W (m/s) at m 11. Wind Direction (degt) at m 12. Std.Dev. Wind Dir. (deg) at m 13. Wind Speed W (m/s) at m 14. Std.Dev. Wind Speed W (m/s) at m 15. Gust Wind Speed W (m/s) at m 16. Wind Speed S (m/s) at m 17. Std.Dev. Wind Speed S (m/s) at m 18. Gust Wind Speed S (m/s) at m 19. Wind Direction (degt) at m 20. Std.Dev. Wind Dir. (deg) at m 21. Air Temperature (C) at 2.00 m 22. Station Pressure (kpa) at 2.00 m -999 signifies datum is not available Flags: 0 - datum not available or marked bad 1 - datum good 2 - datum estimated Data filtered for "nigt" (ours 2300 to 700) ********** Filter, 1= Year Mont Day Hour WS_40m WS_Sdev_Gust_WS_ WS_60m WS_Sdev_Gust_WS_ WD_60m WD_Sdev_WS_80m_WWS_Sdev_Gust_WS_ WS_80m_SWS_Sdev_Gust_WS_ WD_79m WD_Sdev_Temp Pres "nigt" WS_40m WS_60m WS_80m_WWS_80m_S s

43 Appendix D Noise Contour Drawing H , Rev. 0 Hatc 2010/05

44

45 Appendix E Noise Impact Sample Calculation H , Rev. 0 Hatc 2010/05

46

47 Calculation of Sound Pressure Levels from Wind Turbine - Based on ISO KentBreeze Project Background As requested by te Ministry of Environment in te Noise Guidelines for Wind Farms in Section 6.7 Appendices (October 2008), a sample calculation sould be included in te Noise Assessment Report. Te sample calculation must include at least one detailed calculation for a source to receiver 'pair, preferably addressing te closest wind turbine unit, and it must represent all oter 'pairs". For tis project, te receptor No. 12 was cosen for te analysis, along wit turbine Macleod 5 (closest pair). Te coordinates of bot receptor and turbine are given in Table 1 (UTM NAD83, Zone 17). Receptor 12 is not participating in te wind project. Easting (m) Norting (m) Elevation Above Ground (m) Turbine Macleod Receptor No Te calculations are based on ISO : Acoustics Attenuation of sound during propagation outdoors General Metod of Calculation. Te ground attenuation coefficient was assumed as 0.7, as suggested by te MOE Guidelines (Section Specific Parameters). Te octave band data (guaranteed Sound Power Levels) for te GE 2.5xl wind turbine were provided by te manufacturer and adjusted for wind sear and noise guarantee. To adjust measured emissions to maximum value used for modelling, 0.8 db was added to te sound emission of eac frequency band. Calculations Wind Turbine No.: Macleod 5 Receiver No.: 12 Distance between Source and Receiver: d := 579.5m Wind Turbine Sound Power Levels Sound Power Level at 63 Hz L wat_63 := L w_ = 86.7 Sound Power Level at 125 Hz L wat_125 := L w_ = 93.2 Sound Power Level at 250 Hz L wat_250 := L w_ = 99.4 Sound Power Level at 500 Hz L wat_500 := L w_ = 100 Sound Power Level at 1000 Hz L wat_1000 := L w_ = 98.3 Sound Power Level at 2000 Hz L wat_2000 := L w_ = 95

48 Sound Power Level at 4000 Hz L wat_4000 := L w_ = 87.2 Sound Power Level at 8000 Hz L wat_8000 := L w_ = 70.8 Total_L wat = 105 dba A-Weigted Combined Sound Power Level for te Wind Turbine Sound Pressure Level at te point of reception Directivity of Source D := 0 For source at 85 m above te ground Attenuation due to geometrical divergence Att_div := Att_div = 66.3 db d 20 log m Attenuation due to atmosperic absorption Attenuation due to atmosperic absorption at 63 Hz Att_atm_ db km Attenuation due to atmosperic absorption at 125 Hz Att_atm_ db km Attenuation due to atmosperic absorption at 250 Hz Att_atm_ db km Attenuation due to atmosperic absorption at 500 Hz Att_atm_ db km Attenuation due to atmosperic absorption at 1000 Hz Att_atm_ db km Attenuation due to atmosperic absorption at 2000 Hz Att_atm_ db km Attenuation due to atmosperic absorption at 4000 Hz Att_atm_ db km Attenuation due to atmosperic absorption at 8000 Hz Att_atm_ db km Attenuation due to Ground Absorption Ground Absorption Coefficient Ga := 0.7

49 Ground Absorption at te Source Attenuation due to ground absorption at 63 Hz Att_gr_s_63 := 1.5dB Attenuation due to ground absorption at 125 Hz Att_gr_s_125 := Ga 1.5 Attenuation due to ground absorption at 250 Hz Att_gr_s_250 := Ga 1.5 Attenuation due to ground absorption at 500 Hz Att_gr_s_500 := Ga 1.5 Attenuation due to ground absorption at 1000 Hz Att_gr_s_1000 := Ga 1.5 Attenuation due to ground absorption at 2000 Hz Att_gr_s_2000 := 1.5 ( 1 Ga) Attenuation due to ground absorption at 4000 Hz Att_gr_s_4000 := 1.5 ( 1 Ga) Attenuation due to ground absorption at 8000 Hz Att_gr_s_8000 := 1.5 ( 1 Ga) Ground Absorption at te Receiver Attenuation due to ground absorption at 63 Hz Att_gr_r_63 := 1.5dB Attenuation due to ground absorption at 125 Hz Att_gr_r_125 := Ga Attenuation due to ground absorption at 250 Hz Att_gr_r_250 := Ga Attenuation due to ground absorption at 500 Hz Att_gr_r_500 := Ga Attenuation due to ground absorption at 1000 Hz Att_gr_r_1000 := Ga Attenuation due to ground absorption at 2000 Hz Att_gr_r_2000 := 1.5 ( 1 Ga) Attenuation due to ground absorption at 4000 Hz Att_gr_r_4000 := 1.5 ( 1 Ga) Attenuation due to ground absorption at 8000 Hz Att_gr_r_8000 := 1.5 ( 1 Ga) Ground Absorption In te Middle Receiver eigt _r := 4.5m Source eigt _s := 85m Factor := 30 ( _r + _s) = 2685 m Projected distance between Source and Receiver dp := 573.9m Since dp<factor, te attenuation in te middle is equal to zero for all frequencies (Table 3) Total Ground Attenuation for eac frequency Attenuation due to GA at 63 Hz Att_gr_63 := Att_gr_s_63 + Att_gr_r_63 = 3 Attenuation due to GA at 125 Hz Att_gr_125 := Att_gr_s_125 + Att_gr_r_125 = 1.3 Attenuation due to GA at 250 Hz Att_gr_250 := Att_gr_s_250 + Att_gr_r_250 = 0.073

50 Attenuation due to GA at 500 Hz Att_gr_500 := Att_gr_s_500 + Att_gr_r_500 = 0.9 Attenuation due to GA at 1000 Hz Att_gr_1000 := Att_gr_s_ Att_gr_r_1000 = 0.9 Attenuation due to GA at 2000 Hz Att_gr_2000 := Att_gr_s_ Att_gr_r_2000 = 0.9 Attenuation due to GA at 4000 Hz Att_gr_4000 := Att_gr_s_ Att_gr_r_4000 = 0.9 Attenuation due to GA at 8000 Hz Att_gr_8000 := Att_gr_s_ Att_gr_r_8000 = 0.9 Total Attenuation for eac frequency Att := Att_div + Att_atm + Att_gr Attenuation at 63 Hz Att_63 := Att_div + Att_atm_63 + Att_gr_63 = Attenuation at 125 Hz Att_125 := Att_div + Att_atm_125 + Att_gr_125 = Attenuation at 250 Hz Att_250 := Att_div + Att_atm_250 + Att_gr_250 = Attenuation at 500 Hz Att_500 := Att_div + Att_atm_500 + Att_gr_500 = Attenuation at 1000 Hz Att_1000 := Att_div + Att_atm_ Att_gr_1000 = Attenuation at 2000 Hz Att_2000 := Att_div + Att_atm_ Att_gr_2000 = Attenuation at 4000 Hz Att_4000 := Att_div + Att_atm_ Att_gr_4000 = Attenuation at 8000 Hz Att_8000 := Att_div + Att_atm_ Att_gr_8000 = A-Weigted Sound Pressure Levels at te POR Sound Pressure Level at 63 Hz L pa_63 := L wat_63 Att_63 = Sound Pressure Level at 125 Hz L pa_125 := L wat_125 Att_125 = Sound Pressure Level at 250 Hz L pa_250 := L wat_250 Att_250 = Sound Pressure Level at 500 Hz L pa_500 := L wat_500 Att_500 = Sound Pressure Level at 1000 Hz L pa_1000 := L wat_1000 Att_1000 = Sound Pressure Level at 2000 Hz L pa_2000 := L wat_2000 Att_2000 = Sound Pressure Level at 4000 Hz L pa_4000 := L wat_4000 Att_4000 = Sound Pressure Level at 8000 Hz L pa_8000 := L wat_8000 Att_8000 = Total_L pa = 37.8 dba A-Weigted Sound Pressure Level at te Point of Reception

51 Conclusions Based on te calculation procedure provided in ISO and te parameters suggested by te Ministry of Environment in te Noise Guidelines for Wind Farms, Section (October 2008), te estimated sound pressure level at te point of reception was 37.8 dba, equal to te prediction of CADNA-A for te same receptor (37.8 dba). It is important to note tat Receptor 12 receives sound contributions from several sources, and te level sown above (37.8 dba) corresponds only to te contribution from Turbine Macleod 5. Te total sound pressure level at Receptor 12 is 39 dba. Bot te air and ground attenuation components were included and calculated based on ISO 9613.

52 4342 Queen Street P.O. Box 1001 Niagara Falls, Ontario, Canada L2E 6W1 Tel Fax