ST. COLUMBAN WIND PROJECT

Transcription

1 ST. COLUMBAN WIND ROJECT TRANSFORMER NOISE ASSESSMENT REORT For J. Menéndez,.Eng. Zephyr North Ltd. 850 LEGION ROAD UNIT 20 BURLINGTON ON L7S 1T5 CANADA hone: Fax: Internet: For St. Columban Energy L By J. R. Salmon S. J. Corby 201 March 25 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 St. Columban Energy L (St. Columban). Neither Zephyr North Ltd. nor any person acting on its behalf: (a) 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 (b) 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 urpose Revision Brief roject Description...6 Reporting Details Sound Level Limits for Wind Farms ROJECT LAYOUT roject Site roject Details Turbines Municipal Zoning Adjacent rojects Substations St. Columban Wind roject...11 DESCRITION OF RECETORS Definition Determination of Receptors and articipants Vacant Lots Methodology Concordance Table DESCRITION OF SOURCES Wind Turbines St. Columban Wind roject Sub-Stations St. Columban Wind roject Transformer NOISE EMISSION RATINGS Wind Turbines Turbine Noise Definition Standard St. Columban Wind roject Site-Specific Vertical Wind Shear Exponent Sub-Stations St. Columban Wind roject IMACT ASSESSMENT Methodology...17

4 6.2 Specific arameters Additional parameters and conditions Results NOISE LEVEL SUMMARY TABLES NOISE LEVEL ISOLETH MA EXAMLE CALCULATION Method of Calculation Example CONCLUSIONS REFERENCES AENDIX A TURBINE, RECETOR, VACANT LOT AND ARTICIANT LOCATIONS AENDIX B ADDITIONAL DOCUMENTATION...1 4

5 List of Figures Figure 1-1 roject location map...7 Figure 2-1 Transformer sub-station details map...10 Figure dba noise isopleth map for and m receptor heights...22 List of Tables Table 5-1 Table 6-1 Table 7-1 Table 7-2 Table 9-1 Table 9-2 roject transformer station acoustic emissions summary...16 Highest noise levels at receptors...19 Receptor noise level summary table...20 articipant noise level summary table...20 Sample calculation for receptor and turbine...25 Sample calculation for single receptor R2011 and transformer

6 1 INTRODUCTION 1.1 urpose This Noise Assessment Report (NAR) describes the results of a noise impact assessment for the transformer sub-station associated with the St. Columban Energy L (St. Columban) proposed St. Columban Wind roject. The transformer sub-station is located approximately 5 km north-northeast of the project turbines. Separate reports (Zephyr North, 2012a, 2012b, 2012c, 2012d) describe noise assessment of the project turbines. 1.2 Revision 0 Revision 0 is the original Transformer Noise Assessment Report. 1. To ensure a conservative approach to this noise assessment, this revision () revises the project transformer source sound power level specifications upwards based on updated information from transformer manufacturers. In addition, based on comments from the Ontario Ministry of Environment, for the ISO noise propagation analysis the magnitude of the source ground factor (Gs) has been updated to a more conservative value of 0.5. A discussion has been included. Also, public comments on the receptor height specification of raised bungalows were addressed. None of these changes resulted in material changes in the noise assessment of this transformer. All qualified receptors remain fully noise compliant. Minor corrections and edits have been included. 1.4 Brief roject Description The St. Columban Wind roject consists of two Ontario Feed-In Tariff (FIT) wind energy projects with two distinct points of connection into the local distribution 6

7 grid, and a remote transformer sub-station. The two projects and the transformer sub-station are referred to herein and collectively as the St. Columban Wind roject. The turbines are sited in the Municipality of Huron East in Huron County. They are located in two wind farm clusters one consisting of 8 turbines for a capacity of approximately 18 MW, and another consisting of 7 turbines for a capacity of approximately 15 MW. The project power transformer sub-station is located approximately 5 km northnortheast of the project turbines in the Township of Howick. A transmission line running through the Municipality of Huron East, the Municipality of Morris-Turnberry, and the Township of Howick links the turbine site to the transformer sub-station. Figure 1-1 shows the location of the project within Ontario. Reporting Details Figure 1-1 roject location map. 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.() of O. Reg 59/09 (Government of Ontario, 2009b) and amendments (O.Reg. 521/10, Government of Ontario, 2010; O.Reg. 21/11, Government of Ontario, 2011; O.Reg. 195/12, Government of Ontario, 2012). The assessment methodology and calculations conform to the ISO International Standard (ISO, 1996). Results of the analysis have been interpreted using Ministry of Environment Guidelines (MoE, 2008). This latter document generally provides guidelines, clarifications and additional requirements for the application of MoE regulations document NC-22 (MoE, 1995) to wind farm projects. This report will show that the estimated noise levels generated by the project power transformer meet the MoE (2008) prescribed limits at all qualified receptors. 1.6 Sound Level Limits for Wind Farms MoE (2008) lists the sound level limits for wind farms (based on the NC-205 (MoE, 1995a) and NC-22 (MoE, 1995b) publications and a consideration of the background ambient wind-induced sound level) as follows. Note that noise 7

8 contributions from other project hardware, such as switching stations, transformer sub-stations, etc., must be included in the cumulative noise assessment. Summary of Sound Level Limits for Wind Turbines -1 Wind speed (ms ) at 10 m height Wind turbine sound level limits Class Area, dba 4.0 Wind turbine sound level limits Class 1 Area, dba Reference wind induced background sound level L90, dba

9 2 ROJECT LAYOUT 2.1 roject Site The St. Columban Wind roject power transformer sub-station is located in the Township of Howick in Huron County. Transformer site details along with typical topographic map features are included in Figure 2-1 which shows the project area surrounding the power transformer. Within the project power transformer domain, the topography can be characterized as very gently rolling to the point of being almost flat. In Figure 2-1, the contour lines (5 m contour interval) confirm this. Note that the topographic elevation in the vicinity of the transformer sub-station is about 45 m above sea level (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, rural settlements, and small villages and towns. The primary activity in this area is agriculture. The St. Columban Wind roject power transformer sub-station 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). The hamlet of Wroxeter is located about 1.7 km to the north-northeast of the transformer site. 2.2 roject Details Turbines Since the project turbines are located some 5 km to the south-southwest of the power transformer under consideration in this report, they will not be described here. A full description can be found in Zephyr North (2012a, 2012b, 2012c, 2012d). 2. Municipal Zoning Typically, the project area is zoned as Agricultural. 9

10 Figure 2-1 Transformer sub-station details map. 10

11 2.4 Adjacent rojects St. Columban Energy L (St. Columban) has stated that it is not aware of any other planned wind energy projects nor transformer sub-stations in the vicinity of the presently described sub-station. 2.5 Substations St. Columban Wind roject The St. Columban Wind roject turbines are connected into the low voltage electrical distribution system at two different points well to the south of the subject transformer substation. In the case of the St. Columban 1 wind farm (~18 MW capacity), an approximately 4 km buried interconnection line will link the project to the single transformer described here. The host property is located about 1.7 km south-southwest of the hamlet of Wroxeter. The 15/20 MVA transformer will operate at 44 kv/ kv. Figure 2-1 shows the prospective transformer, point of reception (receptor), and participating point of reception (participant) locations. The transformer is designated with the prefix Tr, receptors are designated with R, and participants with. The project transformer substation is located within an agricultural field. It will occupy approximately 0.06 ha (~20 m x 0 m). An access road will run from the adjacent highway (McDonald Line) to the sub-station. The latter will be surrounded by a security fence, but not a noise barrier as the latter is not required to achieve noise compliance. The Ontario NC designation for the project property would be Class Rural. Typical background sound levels for this area would be generated by residential and agricultural activities, ambient sound from wind, and vehicle noise from regional roads. For the purposes of this report, all project areas have been considered to be NC Class. As specified by O.Reg 59/09, the St. Columban Wind roject (including its power transformer) is a Class 4 Wind roject. 11

12 DESCRITION OF RECETORS.1 Definition Receptors (non-participating points of reception), vacant lot surrogate receptors (VLSRs), and participants (participating points of reception) are defined in Ontario MoE NC-22 (MoE, 1995b) and Noise Guidelines publication (MoE, 2008), and in Ontario O.Reg and amendments (Government of Ontario; 2009b, 2010, 2011, 2012)..2 Determination of Receptors and articipants Receptors and participants appropriate to the present noise assessment were identified through mapping and aerial photographs of the power transformer portion of the project area. For verification of details, on-site surveys were carried out. All known receptors and participants within 1,000 m of the project transformer were identified. Typically, for the project area, receptors are residential dwellings of individuals and families not associated with the project. Section 12 (Appendix A) lists limited details for all known receptors and participants situated within the project area. Their locations are shown in Figure 2-1. All receptors within 1,000 m of the project transformer have been included and reported in this noise impact analysis. All receptors have been considered to be designated as rural (NC Class ). 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, transformers, etc.) on their properties. For this project, 7 receptors (non-participating points of reception) and 1 participant (participating point of reception) were determined to be within 1,000 m of the project transformer. Note that public comments have been received with regard to the assignment of heights of m to raised bungalows. However, as shown in Table 6-1, the predicted sound pressure level at receptor (R2011; designated 2-storey or m 12

13 receptor height) nearest the transformer is well within compliance at.1 dba. As a consequence, it would not be possible for any other receptors to be out of compliance, whether they be 1-storey, 2-storey, or raised bungalows. Therefore, the issue of raised bungalows has not been further considered.. Vacant Lots The MoE (2008) Guidelines 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.... However, for the present assessment, the 40 dba isopleths (for 1 and 2 storey dwellings) are confined entirely within the transformer host property and the adjacent property to the south. (See Figure 8-1.) Both of these properties contain dwellings a participant dwelling to the north and a receptor dwelling to the south. There are no other properties that can be impacted by the transformer with noise levels greater than 40 dba. As a consequence of this, no vacant lots were designated, and no vacant lot surrogate receptors (VLSRs) were assigned..4 Methodology ISO modelling was carried out for all receptors and participants. A calculated receptor sound pressure level for each receptor was determined as stipulated in Section 6..2 of MoE (2008) as the present calculations apply only to the project transformer. The heights of dwellings designated as 1-, 2-, and -storeys are normally set to be,, and 7.5 m respectively. However, as noted above, in the present assessment, all dwelling heights have been set to m (2-storey). As noted above, a participating receptor (referred to herein as a participant) has also been surveyed and is shown in Figure 2-1 and listed in Section 12 (Appendix A). An estimate of the sound pressure level was also made for this participant location. It should be noted that the receptors and participant listed in Section 12 include only those that are closer than or equal to 1,000 m from the project transformer noise source..5 Concordance Table Since there are no existing or proposed neighbouring wind energy projects (including transformer sub-stations), concordance tables that rationalize the identification of receptors and VLSRs between the subject and neighbouring projects have not been included. 1

14 4 DESCRITION OF SOURCES 4.1 Wind Turbines St. Columban Wind roject Since the project turbines are located some 5 km to the south-southwest of the power transformer sub-station under consideration in this report, they will not be described nor considered here. Should the reader require turbine information, full descriptions can be found in Zephyr North (2012a, 2012b, 2012c, 2012d). 4.2 Sub-Stations St. Columban Wind roject As noted previously, the off-site project sub-station transformer considered in this report is located about 5 km to the north-northeast of the project turbines Transformer The following table describes the single sub-station power transformer. Sub-Station Wind Farm Transformer Type Operating voltages Rating Height Core tank size Source location Sound characteristics Noise control measures AC power transformer; details to be finalized 44kV output / kv input ~18 MVA ~4 m ~.0mW x 1.2mD x.8mh ~ 5,200 litres outside steady, tonal none 14

15 5 NOISE EMISSION RATINGS 5.1 Wind Turbines Turbine Noise Definition Standard As noted previously, since the project turbines are located some 5 km to the southsouthwest of the power transformer under consideration in this report, they will not be considered here and, as a consequence the turbine noise definition Standard is not relevant to this report. If required, a description of the Standard can be found in Zephyr North (2012a, 2012b) St. Columban Wind roject As noted previously, since the project turbines are located some 5 km to the southsouthwest of the power transformer under consideration in this report, they will not be considered here. 5.2 Site-Specific Vertical Wind Shear Exponent As no turbines are under consideration in this noise assessment report, the sitespecific vertical wind shear exponent is not relevant here. 5. Sub-Stations 5..1 St. Columban Wind roject Because it is not fiscally prudent to purchase or even to order a large power transformer such as required for this project before receiving confirmation that the project will be permitted to proceed, only limited information is available for the transformer and its source noise. In any case, Veresen Inc. has specified an 18 MVA, kv (in), 44 kv (out) power transformer for this project. Based on the CAN/CSA-C88-M90 Standard (CAN/CSA, 2009) it was determined that the maximum allowable Audible Sound 15

16 Level or Average sound level, db A-weighted (using the Standard s terminology) for this size of transformer is 72 dba. In discussions with transformer suppliers, Veresen Inc. further determined that a suitable transformer could be supplied with an audible sound level 10 db lower (62 dba) than the 72 dba specified in the Standard for a small premium in cost. Veresen Inc. has chosen the lower noise option for this project. Assuming conservative dimensions for this capacity of transformer ( m width by 4.0 m depth x 4.0 m height including cooling fans, if any), an estimate of the broadband source sound power level based on the methodology of the ANSI/IEEE C (Section 1) Standard (IEEE, 2010), as referenced in the CAN/CSA-C88-M90 Standard, would be as follows. Lw = Lp + 10log10(S) Lw = 62 dba + 10log10(101.1 m2) Lw = 82 dba where the notation follows that of the C Standard. Lw is the transformer source broadband sound power level; Lp is the Audible Sound Level or Average sound level, db A-weighted specified in the CAN/CSA -C88-M90 Standard (72 dba minus the 10 db reduction offered by the transformer manufacturer); and S is the side and top radiating areas and includes a 0.0 or 1.0 m offset from the transformer surface as appropriate and as specified in the ANSI/IEEE C Standard. For the purpose of this report, octave band source sound power levels characteristic of a typical power transformer were adjusted to reflect the maximum 82.0 dba broadband level derived above. These are listed in Table 5-1 along with a 5 db tonal penalty assessed to all frequencies. The net octave band source sound power levels are also shown, as is the resulting broadband source sound power levels before and after assessment of the penalties. Note that the tonal penalties have been applied for all calculations in this report. No attenuation due to acoustic barriers has been included in the present calculations. St. Columban Energy L (St. Columban) has undertaken to provide full transformer and substation details as soon as they become available. 16 Table 5-1 roject transformer station acoustic emissions summary. Make and Model: AC power transformer; details to be finalized Operating voltage: 44kV output; kv input Rating: ~18 MVA Core tank size: ~.0mW x 1.2mD x.8mh ~ 5,200 litres Source height (m): ~ 4.0 Source location: outside Sound characteristics: steady, tonal Noise control measures: uncontrolled Net source Source sound sound Tonal power Frequency power level penalty level (Hz) (dblin) (db) (dblin) Broadband (dba)

17 6 IMACT ASSESSMENT 6.1 Methodology Cumulative transformer sound pressure levels were estimated at each of the receptors using the ISO Standard (ISO, 1996). Transformer octave band and A-weighted sound power values, standardized meteorological conditions, transformer location, receptor/participant locations, and characteristics were used to determine the A-weighted sound pressure levels at all receptors. 6.2 Specific arameters a) Analysis was carried out for transformer source sound power levels in eight octave bands (6 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 (2008) Noise Guidelines were set as follows: Ambient air temperature: 10 C Ambient humidity: 70 % The required atmospheric attenuation coefficients to be used in the ISO modelling of noise propagation are prescribed in MoE (2008). These have been used in the present assessment, and are shown in the following table. Atmospheric Absorption Coefficients Centre Octave Band Frequency (Hz) Atmospheric Absorption Coefficient (db/km) from MoE Oct 2008 document

18 c) The ISO term for Ground Attenuation was calculated using the General Method (Section 7..1 of the ISO Standard). Based on the terrain type, and following MoE (2008), ground factors were assigned the following values. Source ground factor (Gs): 0.5 (hard/soft ground) Middle ground factor (Gm): 0.8 (soft ground) Receptor ground factor (Gr) 0.5 (hard/soft ground) With respect to the source ground factor (Gs), the relatively small transformer (approximately x 4.0 m dimension) will be located in an agricultural field (soft ground, Gs = 1.0). It will be surrounded by a gravel/screenings area (hard ground, Gs = 0.0) of approximately m width and will be serviced by a gravel/screenings road (hard ground) of approximately 5 m width and 80 m length. Also located within the 120 m (0 x source height of 4.0 m) source region is approximately 175 m of approximately 10 m wide paved road (hard ground; McDonald Line). Therefore, the proportion of hard ground to soft ground within the source region (i.e., out to 120 m from the transformer location) is approximately 2,200 m2 / 45,240 m2 = 4.9%. Using this proportion of hard ground to soft ground to set the proportion in Gs results in a Gs of 1.0 (to a precision of 0.1; 0.95 to a precision of 0.01). Note, too, that the linear proportion of hard ground to soft ground on the line directly between the transformer and nearest dwelling (151 m separation) is approximately.5 m / 151 m = 2.% demonstrating that there is significantly more soft ground than hard ground between the source and the receptor. Thus, it would seem reasonable to assign a source ground factor of 1.0 (to a single decimal precision). However, it should be noted that the receptor region for the nearest dwelling is 15 m for a dwelling height of m. (There is no ISO middle region in this case.) For this receptor region, the MOE 2008 Guidelines for wind farms mandates a maximum ground factor of 0.5. Since there is a significant overlap (104 m out of a separation distance of 151 m) of source and receptor regions, it is perhaps prudent to choose the more conservative of the two ground factors, i.e., Gs = Gr = 0.5. This has been done here. 6. Additional parameters and conditions Sound pressure levels were not calculated for any receptor further than 1,000 m from the project transformer. 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 7-1 and 7-2 found in Section 7 and the noise level isopleth map of Section 8 (Figure 8-1). 18

19 Table 6-1 briefly summarizes the results of the noise assessment. It is a sorted list of the highest sound pressure levels determined in the analysis for receptors. Table 6-1 Highest noise levels at receptors. Receptor ID SrL (dba) Height (m) Nearest roject / Turbine / Other Transformer Distance (m) R R R R R R R R R R R R R R R R R R R R R WindFarm layout file: StC05-Trbn-WFL049.csv 19

20 7 NOISE LEVEL SUMMARY TABLES Table 7-1 Receptor noise level summary table. oint of Reception ID Description R2002 R2005 R2006 R2007 R2008 R2009 R2011 R2012 R201 R2014 R2015 R2016 R2017 R2019 R2020 R2021 R2022 R202 R2024 R2025 R2026 Distance to Nearest Nearest Trbn/Trnsfrmr Trbn/Trnsfrmr Calculated Sound Level at Selected Wind Height (m) (m) ID Speeds (dba) Table 7-2 articipant noise level summary table. articipating Receptor ID Description 2010 Distance to Nearest Trbn/Trnsfrmr Nearest Height (m) (m) Trbn/Trnsfrmr Calculated Sound Level at Selected Wind Speeds (dba) Sound Level Limit (dba)

21 8 NOISE LEVEL ISOLETH MA Figure 8-1 is a 40 dba isopleth map of the sound pressure levels (dba) due to the project transformer over the project area. The noise levels are calculated for receptors with m (1 storey) and m (2 storeys) heights. 21

22 Figure dba noise isopleth map for and m receptor heights. 22

23 9 EXAMLE CALCULATION 9.1 Method of Calculation The calculation of cumulative receptor noise levels from turbines and transformers uses the methodology of ISO 961-2, Acoustics Attenuation of sound during propagation outdoors: art 2: General method of calculation (ISO, 1996). The calculation is based on equation (5) from ISO 961-2, shown here: {[ n L AT DW =10 log [ L i=1 ft ij A f j ] j=1 ]} where LAT (DW) is the equivalent continuous A-weighted downwind sound pressure level at a receptor location, n is the number of turbines/transformers, Af (j) is the standard A-weighting for octave band j, j is an index indicating the eight standard octave-band mid-band frequencies from 6 Hz to 8 khz, LfT(ij) LfT(DW) is the equivalent continuous downwind octave-band sound pressure level at a receptor location for turbine/transformer i and octave band j, and is given by L ft DW = LW D C A where LW is the octave-band sound power level, in decibels, produced by the point sound source relative to a reference sound power of one picowatt, DC is the directivity correction in decibels, 2

24 A is the octave-band attenuation, in decibels, that occurs during propagation from the turbine/transformer to receptor, and is given by A= Adiv Aatm Agr A bar Amisc where Adiv is the attenuation due to geometrical divergence, Aatm is the attenuation due to atmospheric absorption, Agr is the attenuation due to the ground effect, Abar is the attenuation due to a barrier, Amisc is the attenuation due to miscellaneous other effects, Aatm is given by A= d 1000 where 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/transformer to the receptor. Note that Abar and Amisc are not used here. 9.2 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 9-1 lists the intermediate sound pressure levels calculated at receptor R2011 due to the single transformer. Receptor and turbine are separated by 151 m. 24

25 Table 9-1 Sample calculation for receptor and turbine. Intermediate calculations for receptor R2011 and transformer Octave band Mid-band frequency (Hz) LW (dba) Adiv (db) Aatm (db) Agr (db) LfT(DW) (dba) In the table: LW is the octave-band sound power level, in decibels (A-weighted), produced by the point sound source relative to a reference sound power of one picowatt, Adiv is the attenuation due to geometrical divergence, Aatm is the attenuation due to atmospheric absorption, Agr is the attenuation due to the ground effect, LfT(DW) is the equivalent continuous downwind octave-band sound pressure level. Table 9-2 shows intermediate octave band values of the calculations for the Aweighted sound pressure levels at receptor R2011 due to the single transformer. Table 9-2 Sample calculation for single receptor R2011 and transformer. Intermediate calculations for single receptor R2011 and multiple turbines/transformers Turbine/ Transformer Distance ID (m) 151 Turbine/Transformer Lft contribution (db) in frequency band (Hz) Turbine/ Transformer LAT (dba).1

26 10 CONCLUSIONS This noise impact assessment for the proposed St. Columban Wind roject transformer sub-station has determined that the estimated sound pressure levels at receptors in the project area comply with the Ministry of the Environment sound level limits at all qualified points of reception. 26

27 11 REFERENCES CAN/CSA, 2009: ower Transformers and Reactors, CAN/CSA-C88-M90 (R2009) Standard, ublished 1990, Reaffirmed Canadian Standards Association. CAN/CSA, 2011b: Three-hase ad-mounted Distribution Transformers with Separable Insulated High-Voltage Connectors, CAN/CSA-C Standard, ublished 2006, Reaffirmed Canadian Standards Association. Government of Ontario, 1990: Environmental Assessment Act, R.S.O. 1990, Chapter E Government of Ontario, 1990: Environmental rotection Act, R.S.O. 1990, Chapter E Government of Ontario, 2009: Green Energy Act, 2009, search=browsestatutes&context=#bk7 Government of Ontario, 2009b: Ontario Regulation 59/09, made under the Environmental rotection Act, Renewable Energy Approvals under art V.0.1 of the Act. Government of Ontario, 2010: O.Reg. 521/10 made under the Environmental rotection Act amending O.Reg. 59/09. Government of Ontario, 2011, O.Reg. 21/11 made under the Environmental rotection Act amending O.Reg. 59/09. Government of Ontario, 2012, O.Reg. 195/12 made under the Environmental rotection Act amending O.Reg. 59/09. IEEE, 2010: IEEE Standard Test Code for Liquid-Immersed Distribution, ower, and Regulating Transformers, ANSI/IEEE C

28 International Electrotechnical Commission (IEC), 2002: International Standard, Wind turbine generator systems art 11: Acoustic noise measurement techniques. Second edition International Standards Organization (ISO), 199: International Standard: Acoustics Attenuation of sound during propagation outdoors art 1: Calculation of the absorption of sound by the atmosphere. International Standards Organization (ISO), 1996: International Standard: Acoustics Attenuation of sound during propagation outdoors art 2: General method of calculation. Ontario Ministry of the Environment (MoE), Date unknown: Sound Level Adjustments, ublication NC-104. Ontario Ministry of the Environment (MoE), 1995a: Sound Level Limits for Stationary Sources in Class 1 & 2 Areas (Urban), ublication NC-205. October Ontario Ministry of the Environment (MoE), 1995b: Sound Level Limits for Stationary Sources in Class Areas (Rural), ublication NC-22. October Ontario Ministry of the Environment (MoE), 2008: MoE Noise Guidelines for Wind Farms; Interpretation for Applying MOE NC ublications to Wind ower Generation Facilities (October 2008) pp. Zephyr North, 2012a: St. Columban Wind roject, Noise Assessment Report, Revision Dated: 2012/06/12. By Zephyr North Ltd. info@zephyrnorth.com. Zephyr North, 2012b: St. Columban Wind roject, Noise Assessment Report, Revision Dated: 2012/06/12. By Zephyr North Ltd. info@zephyrnorth.com. Zephyr North, 2012c: St. Columban Wind roject, Noise Assessment Report, Revision Addendum 1. Dated: 2012/07/09. By Zephyr North Ltd. info@zephyrnorth.com. Zephyr North, 2012d: St. Columban Wind roject, Noise Assessment Report, Revision 5-11 Addendum 1. Dated: 2012/07/09. By Zephyr North Ltd. info@zephyrnorth.com. 28

29 12 AENDIX A TURBINE, RECETOR, VACANT LOT AND ARTICIANT LOCATIONS This appendix contains lists of transformer, receptor, and participant locations. Coordinates are given in the Universal Transverse Mercator (UTM) Zone 17N projection. The datum is North American Datum 198 (NAD8, Canada). For reference, the project (turbine/transformer) layout identifier is StC05-WFL049.csv. Transformer Table: Transformer Location roject Name: St. Columban Wind roject (Transformer NAR) Datum: NAD8 (Canada) rojection: UTM 17N Identifier Transformer Equipment Make and Model To be determined X(E,m) Y(N,m)

30 oints of Reception (Receptors) Table - oint of Reception Locations roject Name: St. Columban Wind roject (Transformer NAR) Datum: NAD8 (Canada) rojection: UTM 17N oint of Reception ID R2002 R2005 R2006 R2007 R2008 R2009 R2011 R2012 R201 R2014 R2015 R2016 R2017 R2019 R2020 R2021 R2022 R202 R2024 R2025 R2026 Description Height NC (m) Class 7.5 X(E,m) Y(N,m) articipating Receptors (articipants) Table: articipating Receptor Locations roject Name: St. Columban Wind roject (Transformer NAR) Datum: NAD8 (Canada) rojection: UTM 17N oint of Reception ID 2010 Description Height NC (m) Class 0 X(E,m) Y(N,m)

31 1 AENDIX B ADDITIONAL DOCUMENTATION There is no additional documentation associated with this noise assessment report at this time. 1

32 END 2