PORT DOVER WIND PROJECT

Transcription

1 PORT DOVER AND NANTICOKE WIND PROJECT NOISE ASSESSMENT REPORT Revision 3 For Zephyr North Ltd. 850 LEGION ROAD UNIT 20 BURLINGTON ON L7S 1T5 CANADA Phone: Fax: Internet: Info@ZephyrNorth.com By J. R. Salmon S. J. Corby 2011 October 21 Originals printed on Recycled 20% post-consumer content

2 DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITIES This Report was prepared by Zephyr North Ltd. of Burlington Ontario Canada as an account of work sponsored by Capital Power Corporation. Neither Zephyr North Ltd. nor any person acting on its behalf: (a) (b) Makes any warranty or representation whatsoever, express or implied, (i) with respect to the use of any information, apparatus, method, process, or similar item disclosed in this report, including merchantability and fitness for a particular purpose, or (ii) that such use does not infringe on or interfere with privately owned rights, including any party's intellectual property, or (iii) that this report is suitable to any particular user's circumstance, or Assumes responsibility for any damages or other liability whatsoever (including any consequential damages, even if Zephyr North Ltd. or its representatives have been advised of the possibility of such damages) resulting from your selection or use of this report or any information, apparatus, method, process or similar item disclosed in this report. 2

3 Table of Contents 1 INTRODUCTION Purpose Revision Revision Revision Brief Project Description Reporting Details Sound Level Limits for Wind Farms PROJECT LAYOUT Project Site Project Details Adjacent Projects Summerhaven Wind Energy Centre Transformer Stations Project Transformer Station Summerhaven Wind Energy Centre DESCRIPTION OF RECEPTORS Definition Determination Vacant Lots Methodology DESCRIPTION OF SOURCES Port Dover and Nanticoke Wind Project Vestas V90 1.8MW VCS Wind Turbine Summerhaven Wind Energy Centre Siemens SWT Wind Turbine

4 4.3 Transformer Stations Port Dover and Nanticoke Wind Project Summerhaven Wind Energy Centre NOISE EMISSION RATINGS Port Dover and Nanticoke Wind Project Turbines Vestas V90 1.8MW VCS Summerhaven Wind Energy Centre Turbines Siemens SWT Port Dover and Nanticoke Wind Project Transformer Stations Transformer Station Summerhaven Wind Energy Centre Transformer Stations Transformer Station Site-Specific Vertical Wind Shear Exponent IMPACT ASSESSMENT Methodology Specific Parameters Additional parameters and conditions Results NOISE LEVEL SUMMARY TABLES NOISE LEVEL ISOPLETH MAP EXAMPLE CALCULATION Method of Calculation Example CONCLUSIONS REFERENCES APPENDIX A TURBINE, RECEPTOR, VACANT LOT AND PARTICIPANT LOCATIONS APPENDIX B ADDITIONAL DOCUMENTATION

5 List of Figures Figure 1 Project site map...7 Figure 2 40 dba noise isopleth map for 6 ms -1 (10 m) for 1.5 and 4.5 m receptor heights...48 List of Tables Table 1 Vestas V90 1.8MW VCS Wind turbine acoustic emissions summary...17 Table 2 Siemens SWT Wind turbine acoustic emissions summary...18 Table 3 Project transformer station acoustic emissions summary...20 Table 4 Adjacent project transformer station acoustic emissions summary...20 Table 5 WFNoise Highest noise levels at receptors...24 Table 6 Receptor noise level summary table...25 Table 7 Vacant lot surrogate receptor (VLSR) noise level summary table...40 Table 8 Participant noise level summary table...46 Table 9 Sample calculation for receptor and turbine...51 Table 10 Sample calculation for single receptor and multiple turbines

6 1 INTRODUCTION 1.1 Purpose This Noise Assessment Report describes the results of a noise impact assessment for Capital Power Corporation s proposed Class 4 Port Dover and Nanticoke Wind Project (PDNWP). 1.2 Revision 1 Revision 1 documented the following changes to the original report (Revision 0). Update to include the receptors and vacant lot surrogate receptors located within 1.5 km of the project sub-station. 1.3 Revision 2 Revision 2 documented the following changes to Revision 1. Changes in turbine locations of T507, T511, T513, T514, T554; Minor location change to the project transformer. 1.4 Revision 3 This Revision 3 documents the following changes. Changes in turbine locations of T546, T551 & T Brief Project Description The Port Dover and Nanticoke Wind Project is located in the Regional Municipality of Haldimand-Norfolk on the north shore of Lake Erie. The project features two clusters of turbines. On its west side, there is a concentration of 13 turbines to the east of the town of Port Dover. On its eastern side, there are 47 turbines located approximately between the towns of Nanticoke and Selkirk. Figure 1 shows the project location and details. 6

7 Figure 1 Project site map. 7

8 1.6 Reporting Details This report has been prepared to meet all reporting requirements related to wind project noise for a Renewable Energy Approval (REA) under the Green Energy and Green Economy Act 2009 (Government of Ontario, 2009) A noise impact assessment was carried out for this project under Section 55.(3) of O. Reg 359/09 (Government of Ontario, 2009b) and amendments (O.Reg. 521/10, Government of Ontario, 2010). The assessment methodology and calculations conform to the ISO International Standard (ISO, 2009). Results of the analysis have been interpreted using Ministry of Environment Guidelines (MoE, 2008). This latter document generally provides guidelines and clarifications for the application of MoE regulations document NPC-232 (MoE, 1995) to wind farm projects. The MoE (2008) guidelines document prescribes receptor noise level limits based on an analysis of typical wind-induced background noise levels, and tabulates these limits as functions of the ambient 6, 7, 8, 9, and 10 ms -1 wind speeds measured at 10 m above ground level (a.g.l.). Note that the receptor noise level limits must be met for noise produced by other project hardware such as sub-station transformers in addition to noise produced by the wind turbines. This report will show that the estimated noise levels generated by the project turbines and other hardware meet the MoE (2008) prescribed limits at all qualified receptors. 1.7 Sound Level Limits for Wind Farms The Ontario MoE Guidelines document (MoE 2008) lists the sound level limits for wind farms (based on the NPC-205 and NPC-232 publications and a consideration of the background ambient wind-induced sound level) as follows. Summary of Sound Level Limits for Wind Turbines Wind speed (ms -1 ) at 10 m height Wind turbine sound level limits Class 3 Area, dba Wind turbine sound level limits Class 1 Area, dba Reference wind induced background sound level L 90, dba

9 2 PROJECT LAYOUT 2.1 Project Site Figure 1 shows the western and eastern portions of the Port Dover and Nanticoke Wind Project. Typical topographic map features along with project details are shown on the map. Within the northern portion of the project domain, the topography in this region can be characterized as very gently rolling to the point of being almost flat. On the land portion of Figure 1, the contour lines (5 m contour interval) confirm this. Note that the general terrain elevation in the land portion of the project area is about 190 m above sea level (a.s.l). In the southern portion lies (the very flat) Lake Erie with its surface located at 175 m a.s.l. The surface roughness of the project domain is typical of Ontario rural terrain with a heterogeneous mixture of agricultural fields, woodlots, farm buildings, dwellings, and rural settlements. The primary activity in this area is agriculture, with a concentration of industrial activity (coal power generation, steel making, general industry) in the area surrounding the hamlet of Nanticoke. The PDNWP site features a population density typical of southern Ontario rural communities a relatively sparse population in the countryside except for a small number of settlement clusters (villages and towns). 2.2 Project Details Figure 1 shows the properties that have been optioned for lease to the project proponent (Capital Power Corporation) as light magenta shaded polygons. Prospective turbine, point of reception (receptor), participating point of reception (participant), vacant lot (purple striped), and vacant lot surrogate receptor (VLSR) locations are also shown and labelled on the figure. Turbine numbers are designated with the prefix T, receptors are designated with R, participants with P, and VLSRs with V. As specified by O.Reg 359/09 and amendments (O.Reg. 521/10), the PDNWP is a Class 4 Wind Project. The PDNWP will consist of 60 Vestas V MW VCS turbines for a project capacity of MW. The project turbines, numbered T401 to T558, are shown in Figure 1. The thirteen 400 series turbines are located on the western (Port Dover) side of the project; the forty-seven 500 series turbines are located on the eastern 9

10 (Nanticoke) side of the project. The project stretches for a distance of about 18 km parallel to the shore of Lake Erie. Turbines are located from about 0.7 km to 7.2 km from the shoreline. A listing of all PDNWP turbine locations can be found in Section 12 (Appendix A). The Ontario NPC designation for the project properties would generally be Class 3 Rural. Typical background sound levels for these areas would be generated by residential, agricultural, and small commercial activities, ambient sound from wind, and vehicle noise from regional roads. Note, though, that there is a concentration of industrial activity around the village of Nanticoke where the NPC designation is likely to be Class 1 or 2. For the purposes of this report, all areas have been considered to be NPC Class Adjacent Projects Summerhaven Wind Energy Centre Figure 1 also shows tentative locations of turbines in the NextEra Energy Canada ULC s Summerhaven Wind Energy Centre (SWEC) project. These turbines are located roughly to the north and east of the PDNWP Nanticoke-side turbines. NextEra Energy has informed Capital Power Corporation that the SWEC project will be comprised of 61 noise-derated Siemens SWT turbines for a project capacity of approximately 135 MW. (Note, for clarity, that these turbines are often referred to as model SWT as this latter model is the non-noise-reduced (base) versions of this turbine.) Further details of these turbines are provided below. All turbines in the SWEC project within 5 km of any receptor of the PDNWP have been included in the noise assessment for the present project. 2.4 Transformer Stations Project Transformer Station The PDNWP transformer station is located on the Nanticoke (eastern) side of the project. It is substantially north of the project turbines with the nearest (PDNWP) turbine (T514) located about 2.5 km to the south-southwest. Noise from this this transformer station is included in all the reported noise calculations Summerhaven Wind Energy Centre Note that there is a transformer station associated with the SWEC project. It is located about 6.9 km to the east-northeast of the PDNWP transformer station, and is about 2 km north-northwest of the nearest PDNWP turbine (T541). There are three SWEC turbines significantly closer to this transformer station than T

11 While it is significantly distant from the PDNWP, to be conservative, noise from this transformer station has been included in all the reported noise calculations. 11

12 3 DESCRIPTION OF RECEPTORS 3.1 Definition Receptors (non-participating points of reception) and participants (participating points of reception) are defined in Ontario MoE publications NPC-232 Sound Level Limits for Stationary Sources in Class 3 Areas (Rural), MoE Noise Guidelines for Wind Farms (October 2008), and in Ontario O.Reg. 359/09 and amendments (O.Reg. 521/10, 2010/12/20). 3.2 Determination Receptors and participants were identified through mapping, aerial photographs, and on-site surveys of the area. Typically, for this area receptors are residential dwellings of individuals and families not associated with the project. Section 12 (Appendix A) lists all known receptors and participants situated within the project area. Their locations are shown in Figure 1. All receptors within 1.5 km of any PDNWP turbine or sub-station have been included and reported in this noise impact analysis. All receptors have been considered to be designated as rural (NPC Class 3). For the purposes of noise assessment, participants have been defined as dwellings occupied by landowners who receive financial compensation for the placement of project hardware (turbines, cables, roads, sub-stations, etc.) on their properties. 3.3 Vacant Lots The Noise Guidelines for Wind Farms (October 2008) document also requires prediction of the noise levels on...vacant lots that have been zoned by the local municipality to permit residential or similar noise-sensitive uses.... Therefore, all vacant lots within 1.5 km of any turbine or sub-station in the PDNWP were identified as those lots defined by the complete set of parcel fabric which did not contain a receptor nor a participant dwelling (and were obviously not road right-ofways, etc.). A 1 ha building envelope within the vacant lot property that would reasonably be expected to contain the use, and that conforms with the municipal zoning by-laws in effect was also identified for each of the vacant lots by determining a location within the vacant lot where the predicted noise level would be below the allowed maxima. A vacant lot surrogate receptor (VLSR) centred in 12

13 the 1 ha building envelope and designated with a height of 4.5 m was created for the purpose of noise estimation. The VLSRs are listed in Section 12 (Appendix A). 3.4 Methodology ISO modelling was carried out for all receptors, participants and VLSRs. It should be noted that the calculated receptor sound pressure level for each receptor was determined as stipulated in Section of MoE (2008) where there was no nearby transformer sub-stations and as stipulated in Section where a proximate transformer sub-station existed. Note that the heights of dwellings designated as 1-, 2-, and 3-storeys were set to be 1.5, 4.5, and 7.5 m respectively. For areas where there is such a high density of receptors that it would be impractical (and tedious for the reader) to include them all, surrogate receptors were designated. These receptors were chosen to represent the cluster of actual receptors in such a way that the surrogate receptors would be subject to the maximum SPrLs from the surrounding turbines. Typically, receptors at all corners and along all boundaries of the cluster of actual receptors were chosen with (generally) a maximum separation of 200 m between surrogate receptors where possible. All surrogate receptors were assigned a height of 4.6 m to ensure that any 2-storey residences within the cluster were represented. In addition, the 4.6 m value acts as a flag to notify the reader that the particular receptor is a surrogate for nearby receptors. As noted above, participating receptors (referred to herein as participants) have also been surveyed and are shown in Figure 1 and listed in Section 12 (Appendix A). Estimates of SPrLs were made for the participant locations. It should be noted that the receptors, participants and VLSRs listed in Section 12 include only those that are closer than or equal to 1,500 m from any project turbine. 13

14 4 DESCRIPTION OF SOURCES 4.1 Port Dover and Nanticoke Wind Project Vestas V90 1.8MW VCS Wind Turbine The turbines proposed for the PDNWP are manufactured by Vestas Wind Systems A/S ( of Denmark. Vestas is the world's largest manufacturer of wind turbines, and one of the oldest. The proposed model is the 1.8 MW VCS version of the V90 turbine series. The following table summarizes this turbine s characteristics. Vestas V90 1.8MW VCS Type, number of blades, rotor orientation horizontal-axis, 3-bladed, upwind wind turbine Rated power 1,800 kw Rotor diameter; swept area 90.0 m; 6,362 m 2 Operational rotation rate 9.0 to 14.9 rpm; variable speed Hub height; tower type 95 m; steel tubular tower Power regulation individual full span pitch control; variable speed Cut-in wind speed 3.5 ms -1 Cut-out wind speed 25 ms -1 Rated wind speed 12 ms -1 Gearbox yes; 1 planetary stage, 2 helical stages asynchronous with wound rotor, slip rings and Generator; speed VCUS converter; variable speed (rated is 1,344 rpm) Turbine transformer internal (within tower) aerodynamic primary brake by feathering of Braking system individual blades; mechanical disk brake on high-speed shaft Yaw system non-locking combined worm gear and planetary gearbox; Electrical motor brake 14

15 4.2 Summerhaven Wind Energy Centre Siemens SWT Wind Turbine There are 61 Siemens SWT turbines in the Summerhaven Wind Energy Centre project. Siemens Wind Power A/S is a relative newcomer to the ranks of wind turbine manufacturers. However, it entered the market by purchasing the long-standing and experienced Bonus turbine manufacturing company. For clarity, note that this turbine is a Noise-Reduced-Operation (NRO) variant of the standard (full noise, full capacity) Siemens SWT turbine. For information, this latter turbine s full broadband source SPoL is rated at 106 dba while its rated power is 2.3 MW. All of the SWT turbines have been included in the present assessment. The following table describes their major characteristics. Information on the rating and noise characteristics of this turbine has been supplied (without audit by Zephyr North) by NextEra Energy Canada to Capital Power Corporation and thence to Zephyr North. Siemens SWT Type, number of blades, rotor orientation horizontal-axis, 3-bladed, upwind wind turbine Rated power unknown Rotor diameter; swept area m; 8,000 m 2 Operational rotation rate 6 to 16 rpm; variable speed Hub height; tower type 80 m; steel tubular tower Power regulation pitch regulation with variable speed Cut-in wind speed 4 ms -1 Cut-out wind speed 25 ms -1 Rated wind speed ms -1 Gearbox yes - 3-stage planetary/helical Generator; speed asynchronous Turbine transformer unknown Braking system aerodynamic hydraulic full span pitching; hydraulic disc brake on high-speed shaft Yaw system active electrical gear motors; passive friction brake 15

16 4.3 Transformer Stations Port Dover and Nanticoke Wind Project At the present stage of this project, only limited information is available for the transformer to be located in this sub-station. It is understood that the broadband source sound power level for this transformer will be a maximum of 86 dba Summerhaven Wind Energy Centre NextEra Energy Canada ULC has not, at this time, provided details with respect to this transformer sub-station station except to note that the broadband source sound power level is expected to be 79 dba. 16

17 5 NOISE EMISSION RATINGS 5.1 Port Dover and Nanticoke Wind Project Turbines Vestas V90 1.8MW VCS V90 1.8MW VCS turbine source sound power level octave band and broadband data for hub- height wind speeds of 3, 4, 5 and 6 ms -1 were received from Capital Power Corporation which used a software tool supplied by Vestas to calculate the octave and broadband numbers. This information was used with the site-specific power law wind shear exponent of 0.50 (see below for derivation) to synthesize/interpolate/extrapolate source octave sound power levels for 10 m a.g.l. wind speeds of 6, 7, 8, 9, and 10 ms -1 for use in the ISO estimates of receptor noise levels. Table 1 Vestas V90 1.8MW VCS Wind turbine acoustic emissions summary. Make and Model: Vestas V MW VCS Rating: 1,800 kw Hub height (m): 95.0 Wind profile adjustment: summer night-time power-law wind shear coefficient = 0.50 Octave band sound power level (db) Manufacturer s emission levels (hub-height) Adjusted emission levels (10 m a.g.l.) Wind speed (ms -1 ) Frequency (Hz) n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a A-weighted

18 No statement with regard to tonality for this turbine was provided by Capital Power Corporation. The 10 m broadband and octave band source sound power levels for the Vestas V90 1.8MW VCS turbine (under normal operation, with a hub height of 95 m) are shown in Table Summerhaven Wind Energy Centre Turbines Siemens SWT The 10 m broadband and octave source sound power levels for the Siemens SWT turbine with a hub height of 80 m are shown in Table 2. These values have been provided without additional details to Capital Power Corporation by NextEra Energy Canada and thence to Zephyr North. NextEra Energy Canada has provided no statement with regard to any tonality associated with this turbine. It is not known what value of summer night-time vertical wind shear has been used by NextEra for hub-height wind speed adjustment. Table 2 Siemens SWT Wind turbine acoustic emissions summary. Make and Model: Siemens SWT Rating: unknown Hub height (m): 80.0 Wind profile adjustment: summer night-time power-law wind shear coefficient = unknown Octave band sound power level (db) Manufacturer s emission levels (10 m a.g.l.) Adjusted emission levels (10 m a.g.l.) Wind speed (ms -1 ) Frequency (Hz) 63 n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a A-weighted n/a n/a n/a n/a n/a

19 5.3 Port Dover and Nanticoke Wind Project Transformer Stations Transformer Station As noted above, only limited details are available for the transformer noise for the PDNWP sub-station. To be conservative in the present calculations, it was assumed that the broadband source sound power level for this transformer would be the expected maximum of 86 dba. Octave band source sound power levels characteristic of a typical power transformer were adjusted to reflect this broadband level. They are listed in Table 3. A 5 db tonal penalty is automatically assessed to the receptor sound pressure levels calculated for this specific noise source. 5.4 Summerhaven Wind Energy Centre Transformer Stations Transformer Station As noted above, limited details have been provided for the transformer noise for the SWEC sub-station. Therefore, in order to proceed with the noise assessment, it was assumed that the broadband source sound power level for this transformer would be 79 dba, as reported by NextEra Energy Canada. Octave band source sound power levels characteristic of a typical power transformer were adjusted to reflect this broadband level. They are listed in Table 4. A 5 db tonal penalty is automatically assessed to the receptor sound pressure levels calculated for this specific noise source. 5.5 Site-Specific Vertical Wind Shear Exponent The site-specific vertical wind shear exponent was calculated from two project in situ wind monitoring stations, Nanticoke 1 60 m WM and Nanticoke 2 60 m WM (shown in Figure 1), installed on the PDNWP site. Both these wind monitoring stations have wind measurements at nominal levels of 30, 45 and 60 m. The vertical wind shear exponent was calculated by Zephyr North from a least squares fit of a power law profile to period-averaged data at the three available levels of wind speed. The averaged data were filtered to include only summer months (April through September inclusive) and the diurnal hours between 23:00 and 07:00 the following day. That is, the power law wind shear exponent for the average summer night time wind speed profile is reported here specifically, 0.39 for the Nanticoke 1 60 m WM station, and 0.50 for the Nanticoke 2 60 m WM station. To be conservative, a value of 0.50 was used for the vertical wind shear exponent for the purposes of this report. 19

20 Table 3 Project transformer station acoustic emissions summary. Make and Model: Unknown Rating: Unknown Source height (m): 1.5 m (estimated) Tonal penalty: 5 db Octave band source sound power level (db) Frequency (Hz) A-weighted(dBA) 86.0 Table 4 Adjacent project transformer station acoustic emissions summary. Make and Model: Unknown Rating: Unknown Source height (m): 1.6 m (estimated) Tonal penalty: 5 db Octave band source sound power level (db) Frequency (Hz) A-weighted(dBA)

21 6 IMPACT ASSESSMENT 6.1 Methodology Cumulative turbine sound levels were estimated at each of the receptors using the ISO model as implemented in the Zephyr North WFNoise software program which interacts with the ReSoft WindFarm program ( to extract turbine data required for the analysis. Receptor, participant and VLSR data are extracted from a supplementary file. Wind turbine octave band and A-weighted sound power values, standardized meteorological conditions, turbine locations, receptor/vlsr/participant locations, and characteristics were used to determine the A-weighted sound pressure levels at all receptors. 6.2 Specific Parameters a) Analysis was carried out for turbine source sound power levels in eight octave bands (63 to 8,000 Hz) corresponding to 10 m (a.g.l.) ambient wind speeds of 6, 7, 8, 9, and 10 ms -1. b) ISO parameters, as prescribed in the MoE Noise Guidelines for Wind Farms; Interpretation for Applying MOE NPC Publications to Wind Power Generation Facilities (October 2008) were set as follows: Ambient air temperature: 10 C Ambient barometric pressure: kpa Ambient humidity: 70 % Note that barometric pressure (standard, sea-level) is included here as it is required for the ISO Standard calculation of atmospheric sound absorption as described in the following paragraph. The attenuation due to atmospheric absorption was based on atmospheric attenuation coefficients for 10 C, 70 % relative humidity, and kpa barometric pressure. Note that since the numerical model used for the present calculations also includes the ISO Standard (Acoustics Attenuation of sound during propagation outdoors Part 1: Calculation of the absorption of 21

22 sound by the atmosphere), the absorption coefficients for 4 and 8 khz differ slightly from those prescribed in the MoE Noise Guidelines for Wind Farms October 2008 document. These are shown in the following table. Atmospheric Absorption Coefficients Centre Octave Band Frequency (Hz) Atmospheric Absorption Coefficient (db/km) from MoE Oct 2008 document Atmospheric Absorption Coefficient (db/km) from ISO calculation For modelling consistency, the coefficients from the ISO Standard were used. Sensitivity tests have shown that for these high frequencies and the distances typically under consideration in wind farms there is no practical difference in the resultant receptor sound pressure levels. c) The ISO term for Ground Attenuation was calculated using the General Method (Section of the Standard). Ground factors were assigned the following values as required by the MoE Noise Guidelines for Wind Farms (October 2008) publication. Source ground factor: 1.0 (soft ground) Middle ground factor: 0.8 (soft ground) Receptor ground factor: 0.5 (hard/soft ground) 6.3 Additional parameters and conditions Sound pressure levels were not calculated for any receptors for which there was no PDNWP turbine nor sub-station closer than 1,500 m. For any receptor, turbines or sub-stations further than 5,000 m away were not included in the calculations. No additional adjustments were made for wind speed or direction since ISO assumes worst-case conditions for these parameters with respect to noise impact. 6.4 Results Results are reported in Tables 6, 7 and 8 found in Section 7 and the noise level isopleth map of Section 8. To briefly summarize the results, Table 5 is a sorted list of the 25 highest sound pressure levels determined in the analysis for receptors and VLSRs. 22

23 Of particular interest here is vacant lot surrogate receptor V2676 with an estimated SPrL of 45.0 dba. This particular VLSR is located about 1329 m from the PDNWP sub-station and 424, 451, 499, and 1263 m from SWEC turbines T10, T48, T51 and T37 respectively. The nearest PDNWP turbine is T514 located approximately 2,500 m to the south-east of the PDNWP sub-station. While the 45.0 dba SPrL for this VLSR would be expected to render the PDNWP layout non-compliant, it can be shown as follows that there is no perceptible noise contribution by the PDNWP turbines nor by the sub-station transformer. As shown in the table below, an ISO calculation which considers all PDNWP and SWEC turbines and sub-stations results in an estimated SPrL of dba at V2676. (The extra precision is shown for comparison purposes.) A calculation in which all PDNWP turbines and sub-station are removed from the layout also results in an estimated SPrL of dba. An alternative calculation, in which all SWEC turbines and sub-station are removed from the layout results in an SPrL of dba at V2676. It is evident that the contribution by PDNWP hardware to the estimated noise level at V2676 is negligible, and, therefore, any significant noise at this location is due to the SWEC hardware. As a consequence, it is believed the this VLSR is compliant with respect to the PDNWP. Any non-compliance is attributable solely the SWEC. All other receptors and VLSRs are deemed to be compliant. 23

24 Table 5 WFNoise Highest noise levels at receptors Receptor ID SPrL (dba) Height (m) Nearest Turbine Project or Other Turbine Distance (m) V T10 O 426 R Tr101 P 395 R T50 O 558 R T53 O 570 R Tr101 P 669 R T9 O 601 R T524 P 611 V Tr101 P 409 R T69 O 581 V T534 P 589 R T7 O 551 R T507 P 563 R T48 O 812 V T28 O 761 R T28 O 750 R T37 O 784 R T523 P 563 V Tr101 P 480 R T27 O 829 V T546 P 573 R Tr101 P 550 R T546 P 560 V T506 P 588 R T28 O 879 R T53 O 669 R T529 P 563 WindFarm layout file: Nan V mHH.WFL 24

25 7 NOISE LEVEL SUMMARY TABLES Table 6 Receptor noise level summary table. Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R1 Residence T R2 Residence T R3 Residence T R17 Residence T R21 Residence T R25 Residence T R26 Residence T R28 Residence T R31 Residence T R33 Residence T R34 Residence T R35 Residence T R36 Residence T R37 Residence T R38 Residence T R39 Residence T R40 Residence T R43 Residence T R53 Residence T R67 Residence T R81 Residence T R87 Residence T R88 Residence T R99 Residence T R105 Residence T R115 Residence T R117 Residence T R118 Residence T

26 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R122 Residence T R124 Residence T R125 Residence T R126 Residence T R129 Residence T R135 Residence T R136 Residence T R138 Residence T R140 Residence T R141 Residence T R142 Residence T R143 Residence T R144 Residence T R145 Residence T R148 Residence T R149 Residence T R150 Residence T R154 Residence T R155 Residence T R159 Residence T R160 Residence T R161 Residence T R163 Residence T R164 Residence T R166 Residence T R168 Residence T R170 Residence T R172 Residence T R173 Residence T R174 Residence T R177 Residence T R178 Residence T R179 Residence T R180 Residence T R181 Residence T R183 Residence T R184 Residence T R186 Residence T R187 Residence T

27 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R188 Residence T R189 Residence T R190 Residence T R191 Residence T R193 Residence T R194 Residence T R195 Residence T R197 Residence T R200 Residence T R201 Residence T R202 Residence T R203 Residence T R204 Residence T R205 Residence T R206 Residence T R207 Residence T R208 Residence T R212 Residence T R213 Residence T R215 Residence T R216 Residence T R217 Residence T R218 Residence T R219 Residence T R221 Residence T R222 Residence T R223 Residence T R224 Residence T R225 Residence T R226 Residence T R227 Residence T R229 Residence T R230 Residence T R231 Residence T R232 Residence T R233 Residence T R234 Residence T R236 Residence T R237 Residence T

28 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R240 Residence T R241 Residence T R243 Residence T R246 Residence T R248 Residence T R249 Residence T R250 Residence T R251 Residence T R252 Residence T R253 Residence T R254 Residence T R255 Residence T R256 Residence T R257 Residence T R259 Residence T R260 Residence T R261 Residence T R262 Residence T R263 Residence T R264 Residence T R265 Residence T R266 Residence T R267 Residence T R268 Residence T R269 Residence T R270 Residence T R271 Residence T R272 Residence T R273 Residence T R274 Residence T R275 Residence T R276 Residence T R277 Residence T R278 Residence T R279 Residence T R280 Residence T R282 Residence T R283 Residence T R284 Residence T

29 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R285 Residence T R286 Residence T R287 Residence T R288 Residence T R289 Residence T R290 Residence T R292 Residence T R293 Residence T R294 Residence T R295 Residence T R299 Residence T R300 Residence T R303 Residence T R304 Residence T R305 Residence T R308 Residence T R310 Residence T R311 Residence T R315 Residence T R316 Residence T R318 Residence T R319 Residence T R320 Residence T R322 Residence T R323 Residence T R324 Residence T R325 Residence T R326 Residence T R327 Residence T R328 Residence T R329 Residence T R330 Residence T R331 Residence T R332 Residence T R333 Residence T R334 Residence T R335 Residence T R336 Residence T R337 Residence T

30 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R338 Residence T R339 Residence T R340 Residence T R342 Residence T R343 Residence T R344 Residence T R345 Residence T R346 Residence T R347 Residence T R348 Residence T R349 Residence T R350 Residence T R351 Residence T R352 Residence T R353 Residence T R354 Residence T R355 Residence T R356 Residence T R358 Residence T R359 Residence T R360 Residence T R361 Residence T R362 Residence T R364 Residence T R365 Residence T R366 Residence T R367 Residence T R368 Residence T R369 Residence T R370 Residence T R371 Residence T R372 Residence T R373 Residence T R374 Residence T R375 Residence T R376 Residence T R377 Residence T R378 Residence T R379 Residence T

31 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R380 Residence T R381 Residence T R382 Residence T R383 Residence T R385 Residence T R386 Residence T R387 Residence T R388 Residence T R389 Residence T R390 Residence T R391 Residence T R392 Residence T R394 Residence T R395 Residence T R396 Residence T R398 Residence T R399 Residence T R400 Residence T R401 Residence T R403 Residence T R405 Residence T R406 Residence T R407 Residence T R409 Residence T R413 Residence T R416 Residence T R418 Residence T R420 Residence T R423 Residence T R424 Residence T R430 Residence T R433 Residence T R434 Residence T R436 Residence T R438 Residence T R440 Residence T R441 Residence T R444 Residence T R445 Residence T

32 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R448 Residence T R449 Residence T R451 Residence T R452 Residence T R453 Residence T R454 Residence T R455 Residence T R456 Residence T R457 Residence T R458 Residence T R459 Residence T R460 Residence T R463 Residence T R465 Residence T R467 Residence T R469 Residence T R470 Residence T R471 Residence T R474 Residence T R478 Residence T R481 Residence T R483 Residence T R487 Residence T R488 Residence T R495 Residence T R498 Residence T R499 Residence T R502 Residence T R506 Residence T R508 Residence T R510 Residence T R512 Residence T R513 Residence T R514 Residence T R515 Residence T R517 Residence T R519 Residence T R520 Residence T R521 Residence T

33 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R522 Residence T R523 Residence T R524 Residence T R525 Residence T R526 Residence T R528 Residence T R530 Residence T R531 Residence T R533 Residence T R534 Residence T R535 Residence T R536 Residence T R537 Residence T R538 Residence T R540 Residence T R541 Residence T R542 Residence T R543 Residence T R544 Residence T R545 Residence T R546 Residence T R547 Residence T R549 Residence T R550 Residence T R551 Residence T R552 Residence T R554 Residence T R555 Residence T R556 Residence T R557 Residence T R558 Residence T R560 Residence T R561 Residence T R562 Residence T R563 Residence T R564 Residence T R565 Residence T R567 Residence T R568 Residence T

34 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R569 Residence T R571 Residence T R573 Residence T R574 Residence T R575 Residence T R577 Residence T R578 Residence T R580 Residence T R586 Residence T R588 Residence T R590 Residence T R592 Residence T R593 Residence T R595 Residence T R596 Residence T R601 Residence T R603 Residence T R607 Residence T R618 Residence T R630 Residence T R654 Residence T R666 Residence T R688 Residence T R1165 Residence T R1166 Residence T R1167 Residence T R1168 Residence T R1170 Residence T R1225 Residence T R1226 Residence T R1229 Residence T R1233 Residence T R1237 Residence T R1238 Residence T R1240 Residence T R1241 Residence T R1242 Residence T R1244 Residence T R1245 Residence T

35 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R1248 Residence T R1249 Residence T R1250 Residence T R1251 Residence T R1252 Residence T R1253 Residence T R1254 Residence T R1255 Residence T R1256 Residence T R1260 Residence T R1262 Residence T R1264 Residence T R1265 Residence T R1266 Residence T R1267 Residence T R1268 Residence T R1269 Residence T R1270 Residence T R1271 Residence T R1272 Residence T R1273 Residence T R1276 Residence T R1277 Residence T R1278 Residence T R1279 Residence T R1280 Residence T R1282 Residence T R1283 Residence T R1284 Residence T R1286 Residence T R1287 Residence T R1288 Residence T R1289 Residence T R1290 Residence T R1292 Residence T R1294 Residence T R1295 Residence T R1296 Residence T R1297 Residence T

36 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R1298 Residence T R1301 Residence T R1302 Residence T R1305 Residence T R1308 Residence T R1311 Residence T R1312 Residence T R1313 Residence T R1314 Residence T R1315 Residence T R1318 Residence T R1319 Residence T R1321 Residence T R1322 Residence T R1325 Residence T R1328 Residence T R1329 Residence T R1330 Residence T R1331 Residence T R1332 Residence T R1333 Residence T R1336 Residence T R1337 Residence T R1338 Residence T R1339 Residence T R1340 Residence T R1341 Residence T R1342 Residence T R1343 Residence T R1344 Residence T R1345 Residence T R1346 Residence T R1347 Residence T R1348 Residence T R1349 Residence T R1350 Residence T R1351 Residence T R1352 Residence T R1353 Residence T

37 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R1354 Residence T R1355 Residence T R1356 Residence T R1357 Residence T R1358 Residence T R1359 Residence T R1360 Residence T R1361 Residence T R1362 Residence T R1363 Residence T R1364 Residence T R1365 Residence T R1366 Residence T R1367 Residence T R1368 Residence T R1369 Residence T R1370 Residence T R1371 Residence T R1372 Residence T R1373 Residence T R1374 Residence T R1383 Residence T R1384 Residence T R1385 Residence T R1394 Residence T R1402 Residence T R1426 Residence T R1434 Residence T R1435 Residence T R1436 Residence T R1437 Residence T R1443 Residence T R1447 Residence T R1452 Residence T R1453 Residence T R1454 Residence T R1455 Residence T R1456 Residence T R1457 Residence T

38 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R1458 Residence T R1459 Residence T R1460 Residence T R1461 Residence T R1462 Residence T R1463 Residence T R1464 Residence T R1465 Residence T R1466 Residence T R1467 Residence T R1468 Residence T R1469 Residence T R1470 Residence T R1472 Residence T R1473 Residence T R1474 Residence T R1475 Residence T R1476 Residence T R1477 Residence T R1478 Residence T R1479 Residence T R1480 Residence T R1481 Residence T R1482 Residence T R1483 Residence T R1484 Residence T R1485 Residence T R1486 Residence T R1487 Residence T R1488 Residence T R1489 Residence T R1490 Residence T R1491 Residence T R1492 Residence T R1493 Residence T R1494 Residence T R1495 Residence T R1496 Residence T R1497 Residence T

39 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R1498 Residence T R1505 Residence T R1506 Residence T R1507 Residence T R1508 Residence T R1509 Residence T R1510 Residence T R1511 Residence T R1512 Residence T R1513 Residence T R1514 Residence T R1515 Residence T R1516 Residence T R1517 Residence T R1518 Residence T R1519 Residence T R1520 Residence T R1521 Residence T R1522 Residence T R1523 Residence T R1524 Residence T R1525 Residence T R1526 Residence T R1527 Residence T R1528 Residence T R1529 Residence T R1765 Residence T R1766 Residence T R1767 Residence T R1768 Residence T R1769 Residence T R1771 Residence T R1772 Residence T R1773 Residence T R2038 Residence T R2039 Residence T R2040 Residence T R2241 Residence T R2253 Residence T

40 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) R2255 Residence T R3305 Residence T R3306 Residence T R3307 Residence T R3308 Residence T R3309 Residence T R3310 Residence T R3312 Residence T Table 7 Vacant lot surrogate receptor (VLSR) noise level summary table. Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) V1386 Residence T V2267 Residence T V2277 Residence T V2278 Residence T V2279 Residence T V2280 Residence T V2281 Residence T V2282 Residence T V2283 Residence T V2284 Residence T V2285 Residence T V2286 Residence T V2287 Residence T V2288 Residence T V2289 Residence T V2290 Residence T V2291 Residence T V2292 Residence T V2293 Residence T V2294 Residence T V2295 Residence T V2296 Residence T V2297 Residence T

41 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) V2298 Residence T V2299 Residence T V2300 Residence T V2301 Residence T V2302 Residence T V2303 Residence T V2304 Residence T V2305 Residence T V2306 Residence T V2307 Residence T V2308 Residence T V2309 Residence T V2310 Residence T V2311 Residence T V2312 Residence T V2313 Residence T V2314 Residence T V2315 Residence T V2316 Residence T V2317 Residence T V2318 Residence T V2319 Residence T V2320 Residence T V2321 Residence T V2322 Residence T V2323 Residence T V2324 Residence T V2325 Residence T V2326 Residence T V2327 Residence T V2328 Residence T V2329 Residence T V2330 Residence T V2331 Residence T V2332 Residence T V2333 Residence T V2334 Residence T V2335 Residence T V2336 Residence T

42 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) V2337 Residence T V2338 Residence T V2339 Residence T V2340 Residence T V2341 Residence T V2342 Residence T V2343 Residence T V2344 Residence T V2345 Residence T V2346 Residence T V2347 Residence T V2348 Residence T V2349 Residence T V2350 Residence T V2351 Residence T V2352 Residence T V2353 Residence T V2354 Residence T V2355 Residence T V2356 Residence T V2357 Residence T V2358 Residence T V2359 Residence T V2360 Residence T V2361 Residence T V2362 Residence T V2363 Residence T V2364 Residence T V2365 Residence T V2366 Residence T V2367 Residence T V2368 Residence T V2369 Residence T V2370 Residence T V2371 Residence T V2372 Residence T V2373 Residence T V2374 Residence T V2375 Residence T

43 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) V2376 Residence T V2377 Residence T V2378 Residence T V2379 Residence T V2380 Residence T V2381 Residence T V2382 Residence T V2383 Residence T V2384 Residence T V2385 Residence T V2386 Residence T V2387 Residence T V2388 Residence T V2389 Residence T V2390 Residence T V2391 Residence T V2392 Residence T V2393 Residence T V2396 Residence T V2397 Residence T V2398 Residence T V2399 Residence T V2400 Residence T V2401 Residence T V2403 Residence T V2404 Residence T V2408 Residence T V2472 Residence T V2485 Residence T V2488 Residence T V2489 Residence T V2490 Residence T V2491 Residence T V2613 Residence T V2614 Residence T V2615 Residence T V2616 Residence T V2617 Residence T V2618 Residence T

44 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) V2619 Residence T V2620 Residence T V2621 Residence T V2622 Residence T V2623 Residence T V2624 Residence T V2625 Residence T V2676 Residence T V2677 Residence T V2681 Residence T V2682 Residence T V2683 Residence T V2684 Residence T V2685 Residence T V2693 Residence T V2695 Residence T V2696 Residence T V2697 Residence T V2698 Residence T V2699 Residence T V2700 Residence T V2701 Residence T V2706 Residence T V2720 Residence T V2721 Residence T V2722 Residence T V2723 Residence T V2724 Residence T V2725 Residence T V2726 Residence T V2727 Residence T V2729 Residence T V2730 Residence T V2731 Residence T V2732 Residence T V2733 Residence T V2734 Residence T V2735 Residence T V2737 Residence T

45 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) V2738 Residence T V2739 Residence T V2741 Residence T V2742 Residence T V2743 Residence T V2744 Residence T V2745 Residence T V2746 Residence T V2808 Residence T V2810 Residence T V2811 Residence T V2812 Residence T V2813 Residence T V2814 Residence T V2817 Residence T V2818 Residence T V2819 Residence T V2820 Residence T V2821 Residence T V2822 Residence T V2823 Residence T V2824 Residence T V2825 Residence T V2826 Residence T V2827 Residence T V2829 Residence T V2830 Residence T V2831 Residence T V2832 Residence T V2833 Residence T V2834 Residence T V2835 Residence T V2836 Residence T V2848 Residence T V2890 Residence T V2891 Residence T V2892 Residence T V3281 Residence T V3290 Residence T

46 Point of Reception ID Description Height (m) Distance to (m) Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba) V3291 Residence T V3292 Residence T V3293 Residence T V3311 Residence T Table 8 Participant noise level summary table. Participating Receptor ID Description Height (m) Distance to Nearest Turbine (m) Nearest Turbine ID Calculated Sound Level at Selected Wind Speeds (dba) P130 Residence T P182 Residence T P196 Residence T P209 Residence T P211 Residence T P214 Residence T P228 Residence T P238 Residence T P307 Residence T P341 Residence T P363 Residence T P431 Residence T P442 Residence T P443 Residence T P472 Residence T P477 Residence T P482 Residence T P1382 Residence T P1405 Residence T P1433 Residence T

47 8 NOISE LEVEL ISOPLETH MAP Figure 2 displays a noise level isopleth map of the turbine- and transformergenerated SPrLs (dba) over the region of the project for a 10 m a.g.l. wind speed of 6 ms -1. The noise levels are calculated for receptors with 1.5 m (1 storey) and 4.5 m (2 storeys) heights. The map displays the specific noise level isopleth relevant to the MoE Guidelines limit for each wind speed as listed here: Wind Speed Limiting Noise Isopleth 6 ms dba Noise level isopleth maps for 8 and 10 ms -1 have not been generated since the calculated receptor sound pressure levels are identical to those calculated for the 6 ms -1 values. 47

48 Figure 2 40 dba noise isopleth map for 6 ms -1 (10 m) for 1.5 and 4.5 m receptor heights. 48

49 9 EXAMPLE CALCULATION 9.1 Method of Calculation The calculation of cumulative receptor noise levels from wind turbines uses the methodology of the ISO Standard (ISO, 1996). These calculations are effected with Zephyr North s WFNoise software. This program has been purposewritten to carry out the ISO calculations by accessing the ReSoft WindFarm software files to obtain (some of) the required data turbine locations, turbine types, turbine characteristics (including hub-height, and octave band source sound power levels). Additional data which must be input into WFNoise are as follows. a file containing the locations, types, and heights of each of the receptors ambient air temperature ambient barometric pressure ambient humidity source ground factor middle ground factor receptor ground factor The core of WFNoise carries out the equation (5) calculation from ISO shown here: where L AT DW =10 log 10{ i=1 L AT (DW) is the equivalent continuous A-weighted downwind sound pressure level at a receptor location, n is the number of turbines, A f (j) is the standard A-weighting for octave band j, n [ [ L ft ij A f j=1 j ]]} 49

50 j is an index indicating the eight standard octave-band mid-band frequencies from 63 Hz to 8 khz, L ft (ij) L ft (DW) is the equivalent continuous downwind octave-band sound pressure level at a receptor location for turbine i and octave band j, and is given by where L ft DW = L W D C A L W is the octave-band sound power level, in decibels, produced by the point sound source relative to a reference sound power of one picowatt, D C is the directivity correction in decibels, A is the octave-band attenuation, in decibels, that occurs during propagation from the turbine to receptor, and is given by A= A div A atm A gr A bar A misc where A div is the attenuation due to geometrical divergence, A atm is the attenuation due to atmospheric absorption, A gr is the attenuation due to the ground effect, A bar is the attenuation due to a barrier, A misc is the attenuation due to miscellaneous other effects, A atm is given by where A = d 1000 α is the atmospheric attenuation coefficient, in decibels per kilometre, for each octave band at the midband frequency, d is the distance from the turbine to the receptor. Note that α is calculated using ISO Standard (ISO, 1993), and not interpolated from Table 2 of ISO For this reason, the barometric pressure is one of the input parameters to WFNoise. Note also that A bar and A misc are not treated in WFNoise. 50

51 9.1 Example The following sample calculation presents intermediate octave-band results of calculations for A-weighted sound pressure levels corresponding to a 10 m (a.g.l.) wind speed of 6 ms -1. All model parameters are the same as previously tabulated. Table 9 lists the intermediate sound pressure levels calculated at receptor R1295 due to the single turbine T409. Receptor and turbine are separated by 573 m. Note that the resultant A-weighted sound pressure level at R1295 due to turbine T409 alone is 39.7 dba. Table 9 Sample calculation for receptor and turbine. Intermediate calculations for receptor R1295 and turbine T409 Octave band Mid-band frequency (Hz) L W (dba) A div (db) A atm (db) A gr (db) L ft (DW) (dba) In the table: L W is the octave-band sound power level, in decibels, produced by the point sound source relative to a reference sound power of one picowatt, A div is the attenuation due to geometrical divergence, A atm is the attenuation due to atmospheric absorption, A gr is the attenuation due to the ground effect, L ft (DW) is the equivalent continuous downwind octave-band sound pressure level. Table 10 shows intermediate octave band values of the calculations for the A- weighted sound pressure levels at receptor R1295 due to all turbines within 5,000 m of the receptor. The resultant A-weighted sound pressure level at R1295 due to all turbines is 39.7 dba. 51

52 Table 10 Sample calculation for single receptor and multiple turbines. Intermediate calculations for receptor R1295 and multiple turbines Turbine L ft contribution (db) in frequency band (Hz) Turbine ID Distance (m) Turbine L AT (dba) T T T T T T T T T T T T T

53 10 CONCLUSIONS This noise impact assessment for the proposed Port Dover and Nanticoke Wind Project has determined that the estimated sound pressure levels at receptors and Vacant Lot Surrogate Receptors (VLSRs) in the project area comply with the Ministry of the Environment sound level limits at all qualified points of reception. 53

54 11 REFERENCES Government of Ontario, 1990: Environmental Assessment Act, R.S.O. 1990, Chapter E Government of Ontario, 1990: Environmental Protection Act, R.S.O. 1990, Chapter E Government of Ontario, 2009, Green Energy and Green Economy Act. Government of Ontario, 2009b, O.Reg 359/09 made under the Environmental Protection Act, Renewable Energy Approvals Under Part V.0.1 of the Act. Government of Ontario, 2010, O.Reg. 521/10 made under the Environmental Protection Act amending O.Reg. 359/09. International Standards Organization (ISO), 1993: International Standard: Acoustics Attenuation of sound during propagation outdoors Part 1: Calculation of the absorption of sound by the atmosphere. csnumber=17426 International Standards Organization (ISO), 1996: International Standard: Acoustics Attenuation of sound during propagation outdoors Part 2: General method of calculation. csnumber=20649 Ontario Ministry of the Environment (MoE), 1995a: Sound Level Limits for Stationary Sources in Class 1 & 2 Areas (Urban) Publication NPC-205. October ments/resource/std01_ pdf Ontario Ministry of the Environment (MoE), 1995b: Sound Level Limits for Stationary Sources in Class 3 Areas (Rural) Publication NPC-232. October

55 Ontario Ministry of the Environment (MoE), 2008: MoE Noise Guidelines for Wind Farms; Interpretation for Applying MOE NPC Publications to Wind Power Generation Facilities (October 2008) pp. 55

56 12 APPENDIX A TURBINE, RECEPTOR, VACANT LOT AND PARTICIPANT LOCATIONS This appendix contains lists of turbine, receptor, vacant lot surrogate receptor (VLSR), and participant locations. Coordinates are given in the Universal Transverse Mercator (UTM) Zone 17 North projection. The datum is North American Datum 1983 (NAD83, Canada). Turbines Project Name: Port Dover and Nanticoke Wind Project Datum and Projection: NAD83 (Canada); UTM 17N Equipment Identifier Make and Model X(E,m) Y(N,m) Remarks T1 Siemens SWT SWEC T2 Siemens SWT SWEC T3 Siemens SWT SWEC T4 Siemens SWT SWEC T5 Siemens SWT SWEC T6 Siemens SWT SWEC T7 Siemens SWT SWEC T8 Siemens SWT SWEC T9 Siemens SWT SWEC T10 Siemens SWT SWEC T11 Siemens SWT SWEC T12 Siemens SWT SWEC T13 Siemens SWT SWEC T14 Siemens SWT SWEC T15 Siemens SWT SWEC T16 Siemens SWT SWEC T17 Siemens SWT SWEC T21 Siemens SWT SWEC T22 Siemens SWT SWEC T23 Siemens SWT SWEC T24 Siemens SWT SWEC T25 Siemens SWT SWEC T26 Siemens SWT SWEC T27 Siemens SWT SWEC 56

57 T28 Siemens SWT SWEC T29 Siemens SWT SWEC T30 Siemens SWT SWEC T31 Siemens SWT SWEC T32 Siemens SWT SWEC T33 Siemens SWT SWEC T34 Siemens SWT SWEC T35 Siemens SWT SWEC T36 Siemens SWT SWEC T37 Siemens SWT SWEC T38 Siemens SWT SWEC T39 Siemens SWT SWEC T40 Siemens SWT SWEC T41 Siemens SWT SWEC T42 Siemens SWT SWEC T43 Siemens SWT SWEC T48 Siemens SWT SWEC T49 Siemens SWT SWEC T50 Siemens SWT SWEC T51 Siemens SWT SWEC T52 Siemens SWT SWEC T53 Siemens SWT SWEC T54 Siemens SWT SWEC T55 Siemens SWT SWEC T56 Siemens SWT SWEC T57 Siemens SWT SWEC T58 Siemens SWT SWEC T59 Siemens SWT SWEC T61 Siemens SWT SWEC T62 Siemens SWT SWEC T63 Siemens SWT SWEC T64 Siemens SWT SWEC T65 Siemens SWT SWEC T66 Siemens SWT SWEC T67 Siemens SWT SWEC T68 Siemens SWT SWEC T69 Siemens SWT SWEC T401 Vestas V PDNWP T402 Vestas V PDNWP T403 Vestas V PDNWP T404 Vestas V PDNWP T406 Vestas V PDNWP T407 Vestas V PDNWP T408 Vestas V PDNWP T409 Vestas V PDNWP T410 Vestas V PDNWP T411 Vestas V PDNWP T412 Vestas V PDNWP T413 Vestas V PDNWP T414 Vestas V PDNWP T501 Vestas V PDNWP T502 Vestas V PDNWP T503 Vestas V PDNWP T505 Vestas V PDNWP T506 Vestas V PDNWP T507 Vestas V PDNWP T510 Vestas V PDNWP T511 Vestas V PDNWP T513 Vestas V PDNWP T514 Vestas V PDNWP 57

58 T516 Vestas V PDNWP T517 Vestas V PDNWP T518 Vestas V PDNWP T519 Vestas V PDNWP T521 Vestas V PDNWP T522 Vestas V PDNWP T523 Vestas V PDNWP T524 Vestas V PDNWP T525 Vestas V PDNWP T527 Vestas V PDNWP T528 Vestas V PDNWP T529 Vestas V PDNWP T530 Vestas V PDNWP T531 Vestas V PDNWP T532 Vestas V PDNWP T533 Vestas V PDNWP T534 Vestas V PDNWP T535 Vestas V PDNWP T536 Vestas V PDNWP T537 Vestas V PDNWP T538 Vestas V PDNWP T539 Vestas V PDNWP T540 Vestas V PDNWP T541 Vestas V PDNWP T543 Vestas V PDNWP T546 Vestas V PDNWP T547 Vestas V PDNWP T548 Vestas V PDNWP T549 Vestas V PDNWP T550 Vestas V PDNWP T551 Vestas V PDNWP T552 Vestas V PDNWP T553 Vestas V PDNWP T554 Vestas V PDNWP T556 Vestas V PDNWP T557 Vestas V PDNWP T558 Vestas V PDNWP Transformer Stations Project Name: Port Dover and Nanticoke Wind Project Datum and Projection: NAD83 (Canada); UTM 17N Equipment Identifier Make and Model X(E,m) Y(N,m) Remarks TR100 Transformer SWEC TR101 Transformer PDNWP 58

59 Points of Reception (Receptors) Table - Point of Reception Locations Project Name: Port Dover and Nanticoke Wind Project Datum: NAD83 (Canada) Projection: UTM 17N Point of Reception Height NPC ID Description (m) Class X(E,m) Y(N,m) R1 Residence R2 Residence R3 Residence R17 Residence R21 Residence R25 Residence R26 Residence R28 Residence R31 Residence R33 Residence R34 Residence R35 Residence R36 Residence R37 Residence R38 Residence R39 Residence R40 Residence R43 Residence R53 Residence R67 Residence R81 Residence R87 Residence R88 Residence R99 Residence R105 Residence R115 Residence R117 Residence R118 Residence R122 Residence R124 Residence R125 Residence R126 Residence R129 Residence R135 Residence R136 Residence R138 Residence R140 Residence R141 Residence R142 Residence R143 Residence R144 Residence R145 Residence R148 Residence R149 Residence R150 Residence R154 Residence R155 Residence R159 Residence R160 Residence R161 Residence R163 Residence

60 R164 Residence R166 Residence R168 Residence R170 Residence R172 Residence R173 Residence R174 Residence R177 Residence R178 Residence R179 Residence R180 Residence R181 Residence R183 Residence R184 Residence R186 Residence R187 Residence R188 Residence R189 Residence R190 Residence R191 Residence R193 Residence R194 Residence R195 Residence R197 Residence R200 Residence R201 Residence R202 Residence R203 Residence R204 Residence R205 Residence R206 Residence R207 Residence R208 Residence R212 Residence R213 Residence R215 Residence R216 Residence R217 Residence R218 Residence R219 Residence R221 Residence R222 Residence R223 Residence R224 Residence R225 Residence R226 Residence R227 Residence R229 Residence R230 Residence R231 Residence R232 Residence R233 Residence R234 Residence R236 Residence R237 Residence R240 Residence R241 Residence R243 Residence R246 Residence R248 Residence

61 R249 Residence R250 Residence R251 Residence R252 Residence R253 Residence R254 Residence R255 Residence R256 Residence R257 Residence R259 Residence R260 Residence R261 Residence R262 Residence R263 Residence R264 Residence R265 Residence R266 Residence R267 Residence R268 Residence R269 Residence R270 Residence R271 Residence R272 Residence R273 Residence R274 Residence R275 Residence R276 Residence R277 Residence R278 Residence R279 Residence R280 Residence R282 Residence R283 Residence R284 Residence R285 Residence R286 Residence R287 Residence R288 Residence R289 Residence R290 Residence R292 Residence R293 Residence R294 Residence R295 Residence R299 Residence R300 Residence R303 Residence R304 Residence R305 Residence R308 Residence R310 Residence R311 Residence R315 Residence R316 Residence R318 Residence R319 Residence R320 Residence R322 Residence R323 Residence R324 Residence

62 R325 Residence R326 Residence R327 Residence R328 Residence R329 Residence R330 Residence R331 Residence R332 Residence R333 Residence R334 Residence R335 Residence R336 Residence R337 Residence R338 Residence R339 Residence R340 Residence R342 Residence R343 Residence R344 Residence R345 Residence R346 Residence R347 Residence R348 Residence R349 Residence R350 Residence R351 Residence R352 Residence R353 Residence R354 Residence R355 Residence R356 Residence R358 Residence R359 Residence R360 Residence R361 Residence R362 Residence R364 Residence R365 Residence R366 Residence R367 Residence R368 Residence R369 Residence R370 Residence R371 Residence R372 Residence R373 Residence R374 Residence R375 Residence R376 Residence R377 Residence R378 Residence R379 Residence R380 Residence R381 Residence R382 Residence R383 Residence R385 Residence R386 Residence R387 Residence R388 Residence

63 R389 Residence R390 Residence R391 Residence R392 Residence R394 Residence R395 Residence R396 Residence R398 Residence R399 Residence R400 Residence R401 Residence R403 Residence R405 Residence R406 Residence R407 Residence R409 Residence R413 Residence R416 Residence R418 Residence R420 Residence R423 Residence R424 Residence R430 Residence R433 Residence R434 Residence R436 Residence R438 Residence R440 Residence R441 Residence R444 Residence R445 Residence R448 Residence R449 Residence R451 Residence R452 Residence R453 Residence R454 Residence R455 Residence R456 Residence R457 Residence R458 Residence R459 Residence R460 Residence R463 Residence R465 Residence R467 Residence R469 Residence R470 Residence R471 Residence R474 Residence R478 Residence R481 Residence R483 Residence R487 Residence R488 Residence R495 Residence R498 Residence R499 Residence R502 Residence R506 Residence

64 R508 Residence R510 Residence R512 Residence R513 Residence R514 Residence R515 Residence R517 Residence R519 Residence R520 Residence R521 Residence R522 Residence R523 Residence R524 Residence R525 Residence R526 Residence R528 Residence R530 Residence R531 Residence R533 Residence R534 Residence R535 Residence R536 Residence R537 Residence R538 Residence R540 Residence R541 Residence R542 Residence R543 Residence R544 Residence R545 Residence R546 Residence R547 Residence R549 Residence R550 Residence R551 Residence R552 Residence R554 Residence R555 Residence R556 Residence R557 Residence R558 Residence R560 Residence R561 Residence R562 Residence R563 Residence R564 Residence R565 Residence R567 Residence R568 Residence R569 Residence R571 Residence R573 Residence R574 Residence R575 Residence R577 Residence R578 Residence R580 Residence R586 Residence R588 Residence R590 Residence

65 R592 Residence R593 Residence R595 Residence R596 Residence R601 Residence R603 Residence R607 Residence R618 Residence R630 Residence R654 Residence R666 Residence R688 Residence R1165 Residence R1166 Residence R1167 Residence R1168 Residence R1170 Residence R1225 Residence R1226 Residence R1229 Residence R1233 Residence R1237 Residence R1238 Residence R1240 Residence R1241 Residence R1242 Residence R1244 Residence R1245 Residence R1248 Residence R1249 Residence R1250 Residence R1251 Residence R1252 Residence R1253 Residence R1254 Residence R1255 Residence R1256 Residence R1260 Residence R1262 Residence R1264 Residence R1265 Residence R1266 Residence R1267 Residence R1268 Residence R1269 Residence R1270 Residence R1271 Residence R1272 Residence R1273 Residence R1276 Residence R1277 Residence R1278 Residence R1279 Residence R1280 Residence R1282 Residence R1283 Residence R1284 Residence R1286 Residence R1287 Residence R1288 Residence

66 R1289 Residence R1290 Residence R1292 Residence R1294 Residence R1295 Residence R1296 Residence R1297 Residence R1298 Residence R1301 Residence R1302 Residence R1305 Residence R1308 Residence R1311 Residence R1312 Residence R1313 Residence R1314 Residence R1315 Residence R1318 Residence R1319 Residence R1321 Residence R1322 Residence R1325 Residence R1328 Residence R1329 Residence R1330 Residence R1331 Residence R1332 Residence R1333 Residence R1336 Residence R1337 Residence R1338 Residence R1339 Residence R1340 Residence R1341 Residence R1342 Residence R1343 Residence R1344 Residence R1345 Residence R1346 Residence R1347 Residence R1348 Residence R1349 Residence R1350 Residence R1351 Residence R1352 Residence R1353 Residence R1354 Residence R1355 Residence R1356 Residence R1357 Residence R1358 Residence R1359 Residence R1360 Residence R1361 Residence R1362 Residence R1363 Residence R1364 Residence R1365 Residence R1366 Residence R1367 Residence

67 R1368 Residence R1369 Residence R1370 Residence R1371 Residence R1372 Residence R1373 Residence R1374 Residence R1383 Residence R1384 Residence R1385 Residence R1394 Residence R1402 Residence R1426 Residence R1434 Residence R1435 Residence R1436 Residence R1437 Residence R1443 Residence R1447 Residence R1452 Residence R1453 Residence R1454 Residence R1455 Residence R1456 Residence R1457 Residence R1458 Residence R1459 Residence R1460 Residence R1461 Residence R1462 Residence R1463 Residence R1464 Residence R1465 Residence R1466 Residence R1467 Residence R1468 Residence R1469 Residence R1470 Residence R1472 Residence R1473 Residence R1474 Residence R1475 Residence R1476 Residence R1477 Residence R1478 Residence R1479 Residence R1480 Residence R1481 Residence R1482 Residence R1483 Residence R1484 Residence R1485 Residence R1486 Residence R1487 Residence R1488 Residence R1489 Residence R1490 Residence R1491 Residence R1492 Residence R1493 Residence

68 R1494 Residence R1495 Residence R1496 Residence R1497 Residence R1498 Residence R1505 Residence R1506 Residence R1507 Residence R1508 Residence R1509 Residence R1510 Residence R1511 Residence R1512 Residence R1513 Residence R1514 Residence R1515 Residence R1516 Residence R1517 Residence R1518 Residence R1519 Residence R1520 Residence R1521 Residence R1522 Residence R1523 Residence R1524 Residence R1525 Residence R1526 Residence R1527 Residence R1528 Residence R1529 Residence R1765 Residence R1766 Residence R1767 Residence R1768 Residence R1769 Residence R1771 Residence R1772 Residence R1773 Residence R2038 Residence R2039 Residence R2040 Residence R2241 Residence R2253 Residence R2255 Residence R3305 Residence R3306 Residence R3307 Residence R3308 Residence R3309 Residence R3310 Residence R3312 Residence

69 Vacant Lot Surrogate Receptors Table - Vacant Lot Surrogate Receptor Locations Project Name: Port Dover and Nanticoke Wind Project Datum: NAD83 (Canada) Projection: UTM 17N Point of Reception Height NPC ID Description (m) Class X(E,m) Y(N,m) V1386 VLSR V2267 VLSR V2277 VLSR V2278 VLSR V2279 VLSR V2280 VLSR V2281 VLSR V2282 VLSR V2283 VLSR V2284 VLSR V2285 VLSR V2286 VLSR V2287 VLSR V2288 VLSR V2289 VLSR V2290 VLSR V2291 VLSR V2292 VLSR V2293 VLSR V2294 VLSR V2295 VLSR V2296 VLSR V2297 VLSR V2298 VLSR V2299 VLSR V2300 VLSR V2301 VLSR V2302 VLSR V2303 VLSR V2304 VLSR V2305 VLSR V2306 VLSR V2307 VLSR V2308 VLSR V2309 VLSR V2310 VLSR V2311 VLSR V2312 VLSR V2313 VLSR V2314 VLSR V2315 VLSR V2316 VLSR V2317 VLSR V2318 VLSR V2319 VLSR V2320 VLSR V2321 VLSR V2322 VLSR V2323 VLSR

70 V2324 VLSR V2325 VLSR V2326 VLSR V2327 VLSR V2328 VLSR V2329 VLSR V2330 VLSR V2331 VLSR V2332 VLSR V2333 VLSR V2334 VLSR V2335 VLSR V2336 VLSR V2337 VLSR V2338 VLSR V2339 VLSR V2340 VLSR V2341 VLSR V2342 VLSR V2343 VLSR V2344 VLSR V2345 VLSR V2346 VLSR V2347 VLSR V2348 VLSR V2349 VLSR V2350 VLSR V2351 VLSR V2352 VLSR V2353 VLSR V2354 VLSR V2355 VLSR V2356 VLSR V2357 VLSR V2358 VLSR V2359 VLSR V2360 VLSR V2361 VLSR V2362 VLSR V2363 VLSR V2364 VLSR V2365 VLSR V2366 VLSR V2367 VLSR V2368 VLSR V2369 VLSR V2370 VLSR V2371 VLSR V2372 VLSR V2373 VLSR V2374 VLSR V2375 VLSR V2376 VLSR V2377 VLSR V2378 VLSR V2379 VLSR V2380 VLSR V2381 VLSR V2382 VLSR V2383 VLSR

71 V2384 VLSR V2385 VLSR V2386 VLSR V2387 VLSR V2388 VLSR V2389 VLSR V2390 VLSR V2391 VLSR V2392 VLSR V2393 VLSR V2396 VLSR V2397 VLSR V2398 VLSR V2399 VLSR V2400 VLSR V2401 VLSR V2403 VLSR V2404 VLSR V2408 VLSR V2472 VLSR V2485 VLSR V2488 VLSR V2489 VLSR V2490 VLSR V2491 VLSR V2613 VLSR V2614 VLSR V2615 VLSR V2616 VLSR V2617 VLSR V2618 VLSR V2619 VLSR V2620 VLSR V2621 VLSR V2622 VLSR V2623 VLSR V2624 VLSR V2625 VLSR V2676 VLSR V2677 VLSR V2681 VLSR V2682 VLSR V2683 VLSR V2684 VLSR V2685 VLSR V2693 VLSR V2695 VLSR V2696 VLSR V2697 VLSR V2698 VLSR V2699 VLSR V2700 VLSR V2701 VLSR V2706 VLSR V2720 VLSR V2721 VLSR V2722 VLSR V2723 VLSR V2724 VLSR V2725 VLSR

72 V2726 VLSR V2727 VLSR V2729 VLSR V2730 VLSR V2731 VLSR V2732 VLSR V2733 VLSR V2734 VLSR V2735 VLSR V2737 VLSR V2738 VLSR V2739 VLSR V2741 VLSR V2742 VLSR V2743 VLSR V2744 VLSR V2745 VLSR V2746 VLSR V2808 VLSR V2810 VLSR V2811 VLSR V2812 VLSR V2813 VLSR V2814 VLSR V2817 VLSR V2818 VLSR V2819 VLSR V2820 VLSR V2821 VLSR V2822 VLSR V2823 VLSR V2824 VLSR V2825 VLSR V2826 VLSR V2827 VLSR V2829 VLSR V2830 VLSR V2831 VLSR V2832 VLSR V2833 VLSR V2834 VLSR V2835 VLSR V2836 VLSR V2848 VLSR V2890 VLSR V2891 VLSR V2892 VLSR V3281 VLSR V3290 VLSR V3291 VLSR V3292 VLSR V3293 VLSR V3311 VLSR

73 Participating Receptors (Participants) Table - Participating Receptor Locations Project Name: Port Dover and Nanticoke Wind Project Datum: NAD83 (Canada) Projection: UTM 17N Point of Reception Height NPC ID Description (m) Class X(E,m) Y(N,m) P130 Residence P182 Residence P196 Residence P209 Residence P211 Residence P214 Residence P228 Residence P238 Residence P307 Residence P341 Residence P363 Residence P431 Residence P442 Residence P443 Residence P472 Residence P477 Residence P482 Residence P1382 Residence P1405 Residence P1433 Residence

74 13 APPENDIX B ADDITIONAL DOCUMENTATION The following turbine noise specifications have been supplied by Vestas A/S. 74

75 75