APPENDIX J. Noise Assessment

APPENDIX J Noise Assessment

West Cape Wind Farm Environmental Noise Impact Report September 2006

September 19, 2006 Ventus Energy Inc Royal Bank Plaza, South Tower P.O. Box 174 200 Bay St, Suite 3230 Toronto, Ontario M5J 2J1 Attention: Reference: Mr. Zohrab Mawani, Business Development Manager West Cape Wind Farm Phase II, Environmental Noise Impact Report Dear Mr. Mawani, We are pleased to present an electronic copy of the Environmental Noise Impact Report for all 55 turbines to be installed as part of Phase I and Phase II of the West Cape Wind Farm. This report provides the noise results and conclusions for the West Cape Wind Farm turbine layout provided to MKI by Ventus September 6, 2006 and includes the revised position of turbine C8 confirmed on September 18, 2006. The work was performed based on your direction, with input from Hugh Campbell, Vice President of Engineering & Technology with Ventus. This report contains nine sections that describe the site, the methodology, interpretation of results, and conclusions. Three appendices are included which outline building locations around the project, noise level calculations, and turbine noise specifications as provided by the manufacturer. A hard copy of this report will be provided to Ventus Energy Inc. at the conclusion of the study. It is predicted that under several simultaneous worst-case scenarios for noise levels, including a maximum theoretical sound power level of 106.4 db(a) for the turbines, there is a potential for noise levels at 15 points of reception surrounding the West Cape Wind Farm to be in excess of the voluntary 45 db(a) night-time noise guideline. We would like to thank you and the Ventus staff who assisted with this assessment. Sincerely, M. K. INCE AND ASSOCIATES LTD. Martin Ince, P. Eng. M. K. INCE AND ASSOCIATES LTD.

WEST CAPE WIND FARM ENVIRONMENTAL NOISE IMPACT REPORT Ventus Energy Inc West Cape Wind Farm Environmental Noise Impact Report Table of Contents 1.0 Introduction... 1 2.0 General Description of Wind Turbine Installation Site and Surrounds... 2 3.0 Description of Receptors... 2 3.1 Noise Regulations Background...2 3.2 West Cape Wind Farm Noise Receptors...3 3.3 West Cape Wind Farm Noise Limit Classification...3 4.0 Description of Sources... 4 4.1 Wind Turbine Description...4 4.2 Wind Farm Layout...4 5.0 Turbine Noise Emission Rating and Data... 5 5.1 Octave Band Data...6 5.2 Tonality...6 5.3 Low Frequency Sound...6 6.0 Impact Assessment... 7 6.1 Calculated Noise Levels...7 6.2 Noise Model Qualifications...7 6.3 Mitigation Measures...8 7.0 Conclusions... 8 8.0 Recommendations... 9 9.0 Qualifications And Limitations... 10 List of Tables Table 1 Table 2 Vestas V-80 General Specifications.4 V80 A-Weighted, Background Corrected, Measured Apparent Sound Power Level...6 List of Figures Figure 1 V80 Noise Emission Curve for 104.4 + 2 db(a) Noise Emission....5 M. K. INCE AND ASSOCIATES LTD. September 19, 2006

WEST CAPE WIND FARM ENVIRONMENTAL NOISE IMPACT REPORT List of Appendices Appendix A Appendix B Appendix C West Cape Wind Farm: GPS Co-ordinate List West Cape Wind Farm: Noise Calculations & Map West Cape Wind Farm: Turbine Manufacturer Noise Specifications M. K. INCE AND ASSOCIATES LTD. September 19, 2006

WEST CAPE WIND FARM ENVIRONMENTAL NOISE IMPACT REPORT 1.0 INTRODUCTION This report has been produced in accordance with the direction provided by Zohrab Mawani of Ventus Energy Inc (Ventus) to Martin Ince of M.K. Ince & Associates Ltd (MKI). MKI was retained by Ventus to prepare an environmental noise impact assessment for the proposed West Cape Wind Farm(the Project) in Prince County, Prince Edward Island. The report has been produced to fulfill Ventus requirements under the Provincial Environmental Impact Assessment process and the Federal Environmental Screening Assessment process. This report: a) Outlines critical points of noise reception near the project. An additional point of reception was added on June 20, 2006 in order to account for a new residence under construction. b) Discusses noise guidelines in jurisdictions outside of PEI, as well as community noise guidelines set by the World Health Organization. Several considerations raised by Health Canada in reference to another Ventus wind project in PEI are also addressed. c) Suggests a noise limit classification for all points of noise reception. d) Provides a summary of noise levels as predicted by the ISO 9613-2 ( Acoustics- Attenuation of sound during propagation outdoors ) method. The calculations include all 55 turbines that comprise the project. e) Provides maps of the project area with the turbine layouts, noise receptors, and noise contour lines for an assumed turbine noise output of 106.4 db(a). M. K. INCE AND ASSOCIATES LTD. 1 September 19, 2006

WEST CAPE WIND FARM ENVIRONMENTAL NOISE IMPACT REPORT 2.0 GENERAL DESCRIPTION OF WIND TURBINE INSTALLATION SITE AND SURROUNDS The West Cape Wind Farm project area lies on the shores of the West Cape of PEI and is near the community of O Leary in Prince County. The small communities of Springfield West, West Point, Glenwood, Knutsford, Dunblane, Millburn, West Cape, Haliburton and Cape Wolfe lie within or are very near the project area. Land usage in the area is primarily agricultural with some heavily forested areas, which are used for clear-cutting timber and for recreational activities. There are also a number of commercial operations within the region. Cedar Dunes Provincial Park lies approximately 2.5 km south of the project area. Highways 14 & 142 are the main arteries running through the project area and are also the most heavily populated roadways. The majority of dwellings surrounding the Project are full-time residences. The official North Cape Coastal Drive tourist route runs between the project area and PEI s west coast along Highway 14. The topography in the project area features gently rolling hills and farmland, with steep bluffs along much of the surrounding Atlantic Ocean coastline. 3.0 DESCRIPTION OF RECEPTORS 3.1 Noise Regulations Background Acoustic emissions and impacts from wind turbines specifically are currently unregulated in PEI. Federal jurisdiction of noise emissions is concerned with minimizing the health impacts of such emissions. Various other jurisdictions around the world have developed guidelines and regulations pertaining to noise from turbines and noise impact on residents. 3.1.1 Noise Level Calculation Method and Assumptions Noise levels at potential receptors are predicted with the ISO 9613-2 calculation method Acoustics-attenuation of sound during propagation outdoors. This method accounts for site geometry, atmospheric conditions, and terrain type. For this calculation several worst-case scenarios are assumed: No acoustic shielding or damping from vegetation or buildings etc. Atmospheric conditions for least impeded noise propagation. No meteorological correction factor. Noise calculations are performed with an assumed maximum rated noise emission from the individual wind turbines of 106.4 db(a). M. K. INCE AND ASSOCIATES LTD. 2 September 19, 2006

WEST CAPE WIND FARM ENVIRONMENTAL NOISE IMPACT REPORT The 106.4 db(a) noise emission value corresponds to the 104.4 db(a) maximum theoretical noise output of the turbine, described in Section 5.0, plus an additional 2 db(a) due to the uncertainty associated with the theoretical noise curve. This noise emission level is considered to be significantly conservative but is recommended by the manufacturer. Measured octave band noise data for the V80 is not used in the calculations as the theoretical noise emission level used is higher than those measured in reality, therefore no octave band data that corresponds to the 106.4 db(a) noise level is available. The WindPro 2.5 software used for the noise calculation has generated typical generic octave band data for each scenario based on turbine power level and rotor RPM and dimensions. There is no tonal quality to the generated octave band data. More information on tonality is covered in Section 5.2. 3.2 West Cape Wind Farm Noise Receptors A list of residences surrounding the West Cape Wind Farm was compiled by GPCo Inc during an on-site visit and was provided to MKI. The list is included as Appendix A. Ventus informed MKI on June 20, 2006 of an additional residence being constructed by Johnathan MacLelland at UTM NAD83 Zone 20 co-ordinates 392283E 5169713N. This location was included as a noise receptor in this noise impact assessment. Appendix B shows a map of the noise reception points in relation to the turbine layout for the project. Isolines indicating noise levels around the turbines are also included for a maximum turbine noise output level of 106.4 db(a). 3.3 West Cape Wind Farm Noise Limit Classification No regulations in PEI specifically govern acoustic impacts from wind turbines. Other jurisdictions have set limits for noise at a dwelling. A night-time noise level limit of 45 db(a) is used for residences in rural Denmark and several US Counties with substantial wind energy development. The Ontario Ministry of the Environment uses a variable scale of noise limits at a receptor between 40 and 53 db(a) in rural settings, depending on wind speed. The Ontario regulations also exempt residences on properties with turbines from noise level limits. The World Health Organization s publication Guidelines for Community Noise indicates that annoyance health effects in outdoor living areas generally do not begin until sustained noise levels reach 50 db(a). These guidelines state that at night the noise at the outside façade of the living spaces should not exceed 45 db(a). For the West Cape Wind Farm project, a voluntary night-time noise level limit of 45 db(a) and a voluntary day-time noise level limit of 50 db(a) at an ear level of 1.8 m above ground (significantly above average height) at any dwelling location are proposed as noise level guidelines. These suggestions are within the World Health Organization guideline for health effects and are comparable to other limits in Canada and the world. In addition, it is suggested that residences on properties with wind turbines be allowed up to an additional 5 db(a) of noise with approval from the property owner in question. This suggestion is intended to reflect the observation that annoyance impacts from noise will be less for those who are supportive of the project and receive a direct benefit from the project. M. K. INCE AND ASSOCIATES LTD. 3 September 19, 2006

WEST CAPE WIND FARM ENVIRONMENTAL NOISE IMPACT REPORT 4.0 DESCRIPTION OF SOURCES 4.1 Wind Turbine Description The Vestas V80 turbines proposed for use in the West Cape Wind Farm project are horizontal-axis turbines with three bladed upwind rotors, a rotor diameter of 80 metres and a hub-height of 80 metres. The turbine is active yaw and pitch regulated, and features variable-speed control with an asynchronous generator. Table 1 provides the general specifications for the Vestas V80 turbine. Figure 1 presents the theoretical noise specifications for the V80 as provided by Vestas. Table 1: Vestas V80 General Specifications OPERATING DATA Rated capacity (MW) 1.8 Cut-in Wind Speed (m/s) 4 Cut-out Wind Speed (m/s) 25 Rated Wind Speed (m/s) 14 ROTOR Number of Rotor Blades 3 Rotor Diameter (m) 80 Swept Area (m 2 ) 5027 Rotor Speed (RPM) 16.8 TOWER Conical Tubular Steel Hub Height (m) 80 OptiTip pitch control system, Micro-processor POWER CONTROL control of all the turbine functions with the option of remote monitoring. 4.2 Wind Farm Layout This report covers the full 55 turbines that will be installed once Phase I and Phase II construction is completed for the West Cape Wind Farm. A map illustrating the turbine layout is included in Appendix B. M. K. INCE AND ASSOCIATES LTD. 4 September 19, 2006

WEST CAPE WIND FARM ENVIRONMENTAL NOISE IMPACT REPORT 5.0 TURBINE NOISE EMISSION RATING AND DATA The noise emission data for the Vestas V80 was provided by Vestas in a document titled General Specification V80 1.8 MW and is included in Appendix C. An additional document titled Acoustic Noise Measurement, Final Report, V80 1.8 MW has been provided which documents onsite noise measurements of operational V80s across a range of wind speeds. The additional document is also included in Appendix C. For this evaluation the upper limit of the noise data included in the General Specification V80 1.8 MW document is used based on the preference of the turbine manufacturer. The theoretical noise data contained in the document is shown below as Figure 1. The theoretical calculated noise curve for the V80 at a 78 m hub height indicates that maximum turbine sound power level is 104.4 +/- 2 db(a). For the calculations contained in this report, the upper limit of 106.4 db(a) is used (further discussion of selecting the 78 m hub height data is included below Figure 1). The 106.4 db(a) value is significantly conservative in comparison to the maximum measured 103.6 db(a) sound power level presented in the Acoustic Noise Measurement, Final Report, V80 1.8 MW document and included as Table 2. Due to the difference between the theoretically calculated and measured sound power levels, noise levels at receptors predicted in this report are expected to be higher than actual noise levels experienced upon turbine installation. Figure 1: V80 Noise Emission Curve for 104.4 + 2 db(a) Noise Emission Noise data corresponding to the 78 m hub height was used in the calculations. It is assumed that noise data listed for the 78 m hub height will be accurate for the 80 m hub height proposed for the West Cape Wind Farm turbines. This assumption is due to the close proximity of the 78 m and 80 m hub heights and the small variation shown between the 100 m and 78 m hub height data. M. K. INCE AND ASSOCIATES LTD. 5 September 19, 2006

WEST CAPE WIND FARM ENVIRONMENTAL NOISE IMPACT REPORT Table 2: V80 A-Weighted, Background Corrected, Measured Apparent Sound Power Level 5.1 Octave Band Data Octave band data for the 106.4 db(a) sound power level were generated by the WindPro 2.5 software used to perform the noise calculations. No measured octave band data corresponding to the 106.4 db(a) sound power level was available as measured octave band data corresponds to a lower sound power level. The generated octave band data is generic based on turbine power output and rotor dimensions and RPM. It has no tonal quality. The generated octave values are shown in Appendix B and are considered to be reasonable values for the V80 if it were to produce a 106.4 db(a) sound power level. 5.2 Tonality Tonality refers to higher levels of noise emitted from a narrow band of frequencies. Most modern turbines do not have a tonal quality to their noise emission that is significant enough to require a noise penalty. V80 tonality is addressed on page 19 of the Acoustic Noise Measurement, Final Report, V80 1.8 MW document in Appendix C. The document does not indicate that tonal penalties are required based on the spectral noise emission data measured for the V80. 5.3 Low Frequency Sound Low frequency sound was not addressed in the calculations contained in this report. There is little concrete scientific evidence to guide impact evaluation of low frequency sound. The Ontario Ministry of the Environment stated in a document titled Frequently Asked Questions for Wind Energy Projects dated July 2005: Infrasound/low frequency noise emissions were characteristics of some early wind turbine models. This has been attributed to early designs in which turbine blades are downwind of the main tower. This phenomenon does not occur with upwind turbine technology. Modern designs of wind turbine generators generally have the blades upwind of the tower (the rotor facing the wind). The basic advantage of upwind designs is that one avoids the wind shade behind the tower. There is no evidence that the current (upwind) turbine technology presents any problems related to the generation of infrasound/low frequency sound energy. M. K. INCE AND ASSOCIATES LTD. 6 September 19, 2006

WEST CAPE WIND FARM ENVIRONMENTAL NOISE IMPACT REPORT Based on the ISO 9613-2 calculation method, it can be concluded that if the full noise emission frequency band is included in the noise calculations and noise limits are not exceeded, low frequency noise emission levels alone will not exceed the same (or higher) noise limits in the A-weighted decibel scale. No known jurisdictions currently apply specific noise emission limits to low frequency noise. Research in the field of low frequency/infra sound from wind turbines is ongoing. 6.0 IMPACT ASSESSMENT 6.1 Calculated Noise Levels Calculated noise levels for each receptor are included in Appendix B. The highest calculated noise level at any receptor corresponding to a 106.4 db(a) turbine sound power level is 46.9 db(a) which in excess of the voluntary night-time noise guideline. In total there are 15 residences in excess of the voluntary night-time noise guideline when it is assumed the turbine sound power level will be 106.4 db(a). There are no receptors calculated to show noise levels higher than the suggested day-time noise guideline of 50 db(a). No known schools, daycares, or senior residence facilities are predicted to be affected by noise levels above 45 db(a) at night and 50 db(a) during the day, from the 55 project turbines. 6.2 Noise Model Qualifications Modeled noise impacts from the West Cape Wind Farm are based on a worst-case scenario where the turbine sound power level is 106.4 db(a), where crops, wood lots, and vegetation are not present, and atmospheric conditions allow for least impeded noise propagation. Actual noise levels at receptors are likely to be lower than predicted by the model for several reasons: The theoretical sound power level provided by the manufacturer is shown to be 2.8 db(a) higher than that measured in reality, see Appendix C. Wood lots present throughout the project area will reduce noise from turbines. Porous ground cover (crops, agricultural fields, grass, unpacked snow, etc) will exist in higher proportions for the majority of time than the modeled 70% of ground surface area. Buildings such as barns, storage sheds, and other houses will reduce noise levels at certain receptors. Local landscaping such as trees, shrubs, and hedges will reduce noise levels at certain receptors M. K. INCE AND ASSOCIATES LTD. 7 September 19, 2006

WEST CAPE WIND FARM ENVIRONMENTAL NOISE IMPACT REPORT Noise levels at receptors are likely to be reduced based on wind direction Atmospheric conditions will vary and will provide greater impedance to noise propagation. Background noise close to the receptor will mask turbine noise and reduce the perceived noise level from the project. Background noise is likely to increase with increasing turbine noise output as wind speeds increase (except in the case of a temperature inversion). Based on the various noise reducing factors not quantified in the noise calculations, it is likely that actual noise levels at receptors will be less than predicted in this report. Post Phase II construction, on-site noise complaints monitoring and/or measurements will assist in quantifying noise levels at receptors, see Section 8.0. 6.3 Mitigation Measures Based on the 55 turbine layout provided to MKI on September 6, 2006, a maximum turbine sound power level of 106.4 db(a), and a night-time noise guideline of 45 db(a), noise impact mitigation measures may be required at certain residences under certain conditions, depending on the noise reducing influence of various factors listed in Section 6.2. The extent of noise impedance from these sources is beyond the scope of this report and will differ with location. The following is a list of pro-active noise impact mitigation measures that can be utilized at certain receptors if necessary: Installation of vegetative shielding such as trees, hedges, and vines. Installation of a physical barrier such as a wall or fence. Upgrading of windows or doors on a residence. Forming an agreement with the property owner for compensation. Shutting down specific turbines during night-time hours when the wind direction propagates noise more readily toward certain receptors 7.0 CONCLUSIONS When modeled according to the ISO 9613 method Acoustics-attenuation of sound during propagation outdoors and the turbine layout provided to MKI by Ventus on September 6, 2006, with the updated position for turbine C8, it is predicted that under several simultaneous worstcase scenarios for noise propagation there is a potential for noise levels at 15 points of reception surrounding the West Cape Wind Farm to be in excess of the voluntary 45 db(a) night-time noise guideline. M. K. INCE AND ASSOCIATES LTD. 8 September 19, 2006

WEST CAPE WIND FARM ENVIRONMENTAL NOISE IMPACT REPORT The following conclusions and conditions are also listed: The 106.4 db(a) turbine sound power level corresponds to the maximum theoretical noise output of the turbine plus 2 db(a) due to the uncertainty associated with the calculation method. The 106.4 db(a) sound power level is 2.8 db(a) higher than actual measured noise data and is significantly conservative. It has yielded calculated results that are expected to be higher than those found in reality. The highest predicted noise level at a receptor surrounding the West Cape Wind Farmis 46.9 db(a) under the simultaneous worst-case conditions listed in this report. No known residences, schools, daycares, or senior residence facilities are predicted to be affected by turbine noise greater than 45 db(a) at night and 50 db(a) during the day. Tonality penalties were not applied to the turbine noise emission levels. Octave band noise emission data used for the calculations were generated by WindPro 2.5 software as no octave band data exists for the high noise emission level used for the calculations. The available measured octave band data for maximum turbine output corresponds to a lower sound power level than was used in the calculations. An assumed ground porosity of 0.7 was used for the calculations. Conservative assumptions have been selected for the turbine sound power level, ground porosity, and atmospheric conditions. In addition, the presence of foliage and other sound impeding obstacles were not modeled. Therefore the results of the calculations performed for this report are considered to be significantly conservative. Quantification of such sound impeding factors is best done through on-site measurements. 8.0 RECOMMENDATIONS The following requirement has been given by the Department of Environment, Energy and Forestry in relation to Phase I of the project: West Cape Wind Energy Inc [Ventus holding company for the West Cape Wind Farm] must immediately establish a noise monitoring and resolution system once the wind Farm is operational. MKI recommends that: The noise monitoring and resolution system should remain in place after Phase II construction. M. K. INCE AND ASSOCIATES LTD. 9 September 19, 2006

WEST CAPE WIND FARM ENVIRONMENTAL NOISE IMPACT REPORT 9.0 QUALIFICATIONS AND LIMITATIONS M.K. Ince & Associates Ltd. has prepared this report in accordance with its proposal and information provided by its Client. The information and analysis contained herein is for the sole benefit of the Client and may not be relied upon by any other person. The contents of this report are based upon our understanding of guidelines and regulations which we believe to be current at this time. Changes in guidelines, regulations, and enforcement polices can occur at any time, and such changes could affect the conclusions and recommendations of this report. While we have referred to, and made use of reports and specifications prepared by others, we assume no liability for the accuracy of the information contained within those reports and specifications. M. K. INCE AND ASSOCIATES LTD. 10 September 19, 2006

APPENDIX A West Cape Wind Farm: GPS Co-ordinate List Residences

West Cape dwellings' coordinates NAD 83 Property Eastings Northings Altitude ID (m) (m) (m) 1 392351 5167792 13 2 392336 5167843 14 3 392497 5167862 15 4 398751 5171597 46 5 394409 5170478 33 6 396845 5171037 31 7 398888 5171606 46 8 398943 5171624 46 9 398848 5171612 46 10 398809 5171607 46 11 398752 5171548 46 12 398617 5171566 46 13 398485 5171532 45 14 398453 5171524 45 15 398323 5171443 44 16 398326 5171624 45 17 398296 5171528 44 18 398270 5171439 43 19 398058 5171388 42 20 397649 5171230 38 21 397483 5171303 39 22 397379 5171380 39 23 397381 5171100 38 24 397146 5171270 38 25 397188 5171288 38 26 397190 5171054 36 27 397147 5171271 38 28 396643 5171121 30 29 396290 5171183 36 30 396285 5171012 35 31 396314 5170865 34 32 396136 5170981 38 33 396063 5170967 38 34 396152 5170836 36 35 396021 5170938 38 36 396042 5170912 38 37 395983 5170865 38 38 395914 5170881 38 39 395789 5170919 38 40 395765 5170787 38 41 395662 5170885 38 42 395608 5170700 38 43 395561 5170851 38 44 395530 5170868 38 45 395496 5170841 38 46 396164 5171094 37 47 394892 5170626 33 48 394786 5170653 31 49 394722 5170491 33 50 394618 5170775 30 51 394694 5170513 32 52 394280 5170750 29 53 394126 5170534 33 54 394072 5170454 35 55 394017 5170496 34 56 393665 5170391 38 57 393479 5170348 38 58 393432 5170355 38 59 393319 5170312 38 60 393270 5170318 38 61 393222 5170310 38 62 392377 5170126 30 63 392494 5168269 16 64 392161 5168252 10 65 392252 5168325 12 66 392165 5168471 11 67 392478 5168688 16 68 392071 5168671 9 69 392120 5168739 10 70 392100 5168939 11

71 392346 5168932 22 72 392097 5169007 12 73 392219 5169266 17 74 392149 5169369 13 75 392381 5170181 30 76 392316 5170341 29 77 392245 5170485 29 78 392472 5171606 9 79 392313 5171618 9 80 392487 5171738 13 81 392534 5172502 30 82 392595 5172454 30 83 392597 5172495 30 84 392226 5172280 25 85 392327 5172543 27 86 392352 5172643 26 87 392634 5173651 23 88 392847 5173560 24 89 392745 5173943 17 90 392785 5174006 15 91 392835 5174201 13 92 392843 5174347 11 93 392877 5174361 11 94 392847 5174389 10 95 392933 5174387 12 96 392943 5174359 12 97 392904 5174384 12 98 392858 5174421 10 99 392947 5174424 11 100 392931 5174499 11 101 393048 5174478 12 102 393057 5174503 13 103 393024 5174537 12 104 393135 5174591 14 105 393146 5174712 14 106 393171 5174738 15 107 393251 5174791 16 108 393246 5174841 15 109 393330 5174877 16 110 393370 5174997 15 111 393441 5175059 16 112 393477 5175082 16 113 393667 5175167 18 114 393660 5175254 16 115 393716 5175234 16 116 393771 5175278 15 117 393636 5175387 15 118 393793 5175319 14 119 393873 5175359 12 120 393812 5175427 9 121 394206 5175691 15 122 394052 5175819 10 123 394248 5175705 14 124 394187 5175872 11 125 394288 5176008 9 126 394408 5176146 8 127 394695 5175931 20 128 394551 5176224 9 129 394615 5176395 11 130 394743 5176663 15 131 394652 5176436 13 132 394782 5176715 15 133 395097 5177031 15 134 395057 5177080 15 135 395147 5177076 16 136 395107 5177121 16 137 395151 5177201 16 138 395174 5177229 16 139 395225 5177243 16 140 395356 5177399 16 141 395474 5177710 16 142 395413 5177707 15 143 394208 5175794 13 144 394592 5176446 11 145 393505 5175058 17

146 393568 5175032 18 147 393623 5175046 19 148 393754 5174930 23 149 393827 5174890 23 150 393954 5174815 23 151 393984 5174803 23 152 394109 5174714 24 153 394612 5174379 23 154 394656 5174494 27 155 395106 5174244 36 156 395177 5174185 36 157 395207 5174170 37 158 395312 5174135 38 159 395647 5173967 38 160 395670 5173884 39 161 395720 5173942 40 162 395841 5173879 43 163 396012 5173787 46 164 396344 5173661 49 165 394803 5174612 31 166 394938 5174610 33 167 394921 5174652 32 168 394177 5174640 23 169 394196 5174498 28 170 398754 5174280 49 171 395917 5172607 42 172 398707 5174284 50 173 398742 5174214 49 174 399123 5174376 48 175 394053 5174770 24 176 399439 5174445 47 177 399572 5174587 46 178 399636 5174634 46 179 396414 5173038 47 180 396442 5172841 46 181 396296 5172625 43 182 398193 5174147 50 183 396196 5172340 38 184 397128 5167167 20 185 396806 5167054 20 186 396634 5167149 23 187 396587 5167108 23 188 396300 5167030 23 189 396201 5167087 23 190 395866 5167115 23 191 395831 5166905 20 192 395295 5167003 22 193 395179 5167010 21 194 395006 5167080 21 195 395001 5167017 20 196 394760 5167129 18 197 394568 5167102 16 198 394287 5167342 15 199 394065 5167418 14 200 393808 5167649 15 201 393400 5167484 15 202 393268 5167402 15 203 393239 5167486 16 204 393171 5167425 15 205 393108 5167413 15 206 393036 5167394 15 207 392942 5167395 16 208 397513 5165849 15 209 397479 5165717 14 210 397395 5165760 14 211 397340 5165614 11 212 397188 5165816 14 213 397222 5165608 10 214 397152 5165595 9 215 397045 5165815 14 216 397054 5165082 8 217 396615 5164758 5 218 396494 5164726 5 219 396341 5164704 5 220 396329 5164640 5

221 396254 5164712 6 222 396195 5164740 7 223 396183 5164697 7 224 396153 5164694 7 225 396120 5164685 7 226 396082 5164685 7 227 396012 5164680 7 228 395727 5164661 7 229 395698 5164560 6 230 395538 5164618 6 231 395502 5164608 6 232 395252 5164599 5 233 395205 5164594 4 234 395132 5164598 4 235 394822 5164654 4 236 394773 5164664 4 237 394739 5164677 3 238 394657 5164695 3 239 394525 5164691 3 240 394427 5164697 3 241 394284 5164680 3 242 394109 5164755 3 243 393517 5166005 7 244 393421 5166136 8 245 393411 5166193 8 246 393449 5166232 8 247 393260 5166289 7 248 393116 5166772 7 249 393084 5167049 11 250 393068 5167076 12 251 392908 5167288 15 252 392743 5167473 16 253 392669 5167431 15 254 392668 5167515 15 255 399218 5171693 46 256 399157 5171639 46 257 399075 5171609 46 258 399010 5171598 46 259 398991 5171530 46 260 397271 5166923 23 261 397150 5167066 22 262 395931 5164735 8 263 395770 5164777 8 264 394947 5164480 3 265 394216 5164605 2 266 392457 5167428 15 267 392447 5167494 14 268 392380 5167381 7 269 392381 5167468 10 270 394011 5164596 2 271 393939 5164557 1 272 393962 5164586 2

APPENDIX B West Cape Wind Farm: Noise Calculation & Map Phase I & II 55 V80 Turbines 106.4 db(a) Turbine Noise Emission

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 1 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65 Noise calculation model: ISO 9613-2 General Wind speed: 6.0 m/s Ground attenuation: General, Ground factor: 0.7 Meteorological coefficient, C0: 0.0 db Type of demand in calculation: 1: WTG noise is compared to demand (DK, DE, SE, NL etc.) Noise values in calculation: All noise values are mean values (Lwa) (Normal) Pure tones: Pure and Impulse tone penalty are added to WTG source noise Height above ground level, when no value in NSA object: 1.8 m Don't allow override of model height with height from NSA object Deviation from "official" noise demands. Negative is more restrictive, positive is less restrictive.: 0.0 db(a) New WTG Scale 1:250,000 Noise sensitive area WTGs UTM NAD83 Zone: 20 WTG type Noise data East North Z Row Valid Manufact. Type Power Diam. Height Creator Name Wind Status Hub LwA,ref Pure Octave data/description speed height tones data [m] [kw] [m] [m] [m/s] [m] [db(a)] 1 393,804 5,166,617 13 S21 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 2 394,127 5,169,584 30 S6 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 3 392,628 5,169,645 28 S2 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 4 393,124 5,172,512 30 C14 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 5 395,353 5,174,911 32 N6 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 6 395,141 5,176,423 17 N1 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 7 394,053 5,171,255 28 C21 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 8 395,720 5,171,474 31 C27 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 9 393,358 5,174,000 26 C3 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 10 393,401 5,168,212 29 S18 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 11 395,586 5,176,410 27 N2 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 12 395,982 5,176,136 31 N3 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 13 395,216 5,176,116 20 N4 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 14 395,675 5,176,060 29 N5 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 15 394,069 5,173,957 30 C1 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 16 393,741 5,173,880 29 C2 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 17 394,352 5,173,358 30 C4 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 18 394,799 5,173,326 31 C5 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 19 395,599 5,173,079 33 C6 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 20 395,289 5,172,738 32 C7 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 21 394,040 5,172,786 26 C9 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 22 393,895 5,172,369 26 C10 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 23 394,229 5,172,375 29 C11 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 24 395,074 5,172,231 31 C12 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 25 395,473 5,172,330 32 C13 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 26 393,455 5,172,382 22 C15 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 27 392,898 5,172,134 33 C16 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 28 392,975 5,171,760 19 C17 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 29 392,886 5,171,413 10 C18 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 30 392,749 5,170,677 30 C19 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 31 393,260 5,170,803 27 C20 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 32 393,989 5,171,529 30 C22 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 33 393,738 5,171,783 27 C23 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 34 393,590 5,171,530 26 C24 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 35 394,452 5,171,430 30 C25 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 36 394,339 5,171,878 29 C26 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 37 395,623 5,171,845 32 C28 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 38 392,828 5,169,887 30 S1 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 39 393,043 5,169,667 30 S3 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 40 393,351 5,169,738 30 S4 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 41 393,842 5,169,882 30 S5 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 2 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page UTM NAD83 Zone: 20 WTG type Noise data East North Z Row Valid Manufact. Type Power Diam. Height Creator Name Wind Status Hub LwA,ref Pure Octave data/description speed height tones data [m] [kw] [m] [m] [m/s] [m] [db(a)] 42 392,664 5,169,295 30 S7 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 43 392,976 5,169,368 30 S8 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 44 393,286 5,169,440 30 S9 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 45 392,835 5,168,975 30 S10 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 46 393,143 5,169,051 30 S11 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 47 393,448 5,169,126 28 S12 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 48 392,988 5,168,644 30 S13 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 49 393,341 5,168,730 30 S14 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 50 393,729 5,168,824 25 S15 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 51 393,210 5,168,434 30 S16 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 52 393,587 5,168,524 29 S17 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 53 393,827 5,168,320 25 S19 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 54 393,584 5,167,082 15 S20 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) 55 394,633 5,172,763 30 updated C8 No VESTAS V80-1.8MW 60Hz 1,800 80.0 80.0 USER Runtime input 6.0 User value 80.0 106.4 0 db Generic *) *)Notice: One or more noise data for this WTG is generic or input by user Calculation Results Sound Level Noise sensitive area UTM NAD83 Zone: 20 Demands Sound Level Demands fulfilled? No. Name East North Z Imission height Noise From WTGs Noise [m] [m] [db(a)] [db(a)] A Noise Sensitive Point: 45 db Dist: 0 m (239) 392,351 5,167,792 3 1.8 45.0 40.2 Yes B Noise Sensitive Point: 45 db Dist: 0 m (240) 392,336 5,167,843 4 1.8 45.0 40.4 Yes C Noise Sensitive Point: 45 db Dist: 0 m (241) 392,497 5,167,862 8 1.8 45.0 41.4 Yes D Noise Sensitive Point: 45 db Dist: 0 m (242) 398,751 5,171,597 33 1.8 45.0 29.8 Yes E Noise Sensitive Point: 45 db Dist: 0 m (243) 394,409 5,170,478 30 1.8 45.0 43.0 Yes F Noise Sensitive Point: 45 db Dist: 0 m (244) 396,845 5,171,037 30 1.8 45.0 36.1 Yes G Noise Sensitive Point: 45 db Dist: 0 m (245) 398,888 5,171,606 33 1.8 45.0 29.4 Yes H Noise Sensitive Point: 45 db Dist: 0 m (246) 398,943 5,171,624 33 1.8 45.0 29.3 Yes I Noise Sensitive Point: 45 db Dist: 0 m (247) 398,848 5,171,612 33 1.8 45.0 29.5 Yes J Noise Sensitive Point: 45 db Dist: 0 m (248) 398,809 5,171,607 33 1.8 45.0 29.6 Yes K Noise Sensitive Point: 45 db Dist: 0 m (249) 398,752 5,171,548 33 1.8 45.0 29.8 Yes L Noise Sensitive Point: 45 db Dist: 0 m (250) 398,617 5,171,566 32 1.8 45.0 30.1 Yes M Noise Sensitive Point: 45 db Dist: 0 m (251) 398,485 5,171,532 32 1.8 45.0 30.5 Yes N Noise Sensitive Point: 45 db Dist: 0 m (252) 398,453 5,171,524 32 1.8 45.0 30.6 Yes O Noise Sensitive Point: 45 db Dist: 0 m (253) 398,323 5,171,443 31 1.8 45.0 30.9 Yes P Noise Sensitive Point: 45 db Dist: 0 m (254) 398,326 5,171,624 32 1.8 45.0 31.0 Yes Q Noise Sensitive Point: 45 db Dist: 0 m (255) 398,296 5,171,528 31 1.8 45.0 31.0 Yes R Noise Sensitive Point: 45 db Dist: 0 m (256) 398,270 5,171,439 31 1.8 45.0 31.1 Yes S Noise Sensitive Point: 45 db Dist: 0 m (257) 398,058 5,171,388 31 1.8 45.0 31.7 Yes T Noise Sensitive Point: 45 db Dist: 0 m (258) 397,649 5,171,230 31 1.8 45.0 32.9 Yes U Noise Sensitive Point: 45 db Dist: 0 m (259) 397,483 5,171,303 31 1.8 45.0 33.6 Yes V Noise Sensitive Point: 45 db Dist: 0 m (260) 397,379 5,171,380 31 1.8 45.0 34.1 Yes W Noise Sensitive Point: 45 db Dist: 0 m (261) 397,381 5,171,100 31 1.8 45.0 33.8 Yes X Noise Sensitive Point: 45 db Dist: 0 m (262) 397,146 5,171,270 31 1.8 45.0 35.0 Yes Y Noise Sensitive Point: 45 db Dist: 0 m (263) 397,188 5,171,288 31 1.8 45.0 34.9 Yes Z Noise Sensitive Point: 45 db Dist: 0 m (264) 397,190 5,171,054 31 1.8 45.0 34.5 Yes AA Noise Sensitive Point: 45 db Dist: 0 m (265) 397,147 5,171,271 31 1.8 45.0 35.0 Yes AB Noise Sensitive Point: 45 db Dist: 0 m (266) 396,643 5,171,121 30 1.8 45.0 37.4 Yes AC Noise Sensitive Point: 45 db Dist: 0 m (267) 396,290 5,171,183 30 1.8 45.0 40.2 Yes AD Noise Sensitive Point: 45 db Dist: 0 m (268) 396,285 5,171,012 30 1.8 45.0 39.3 Yes AE Noise Sensitive Point: 45 db Dist: 0 m (269) 396,314 5,170,865 30 1.8 45.0 38.4 Yes AF Noise Sensitive Point: 45 db Dist: 0 m (270) 396,136 5,170,981 30 1.8 45.0 40.2 Yes AG Noise Sensitive Point: 45 db Dist: 0 m (271) 396,063 5,170,967 30 1.8 45.0 40.5 Yes AH Noise Sensitive Point: 45 db Dist: 0 m (272) 396,152 5,170,836 30 1.8 45.0 39.1 Yes AI Noise Sensitive Point: 45 db Dist: 0 m (273) 396,021 5,170,938 30 1.8 45.0 40.5 Yes AJ Noise Sensitive Point: 45 db Dist: 0 m (274) 396,042 5,170,912 30 1.8 45.0 40.2 Yes AK Noise Sensitive Point: 45 db Dist: 0 m (275) 395,983 5,170,865 30 1.8 45.0 40.1 Yes AL Noise Sensitive Point: 45 db Dist: 0 m (276) 395,914 5,170,881 30 1.8 45.0 40.6 Yes AM Noise Sensitive Point: 45 db Dist: 0 m (277) 395,789 5,170,919 30 1.8 45.0 41.4 Yes AN Noise Sensitive Point: 45 db Dist: 0 m (278) 395,765 5,170,787 30 1.8 45.0 40.3 Yes Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 3 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page Noise sensitive area UTM NAD83 Zone: 20 Demands Sound Level Demands fulfilled? No. Name East North Z Imission height Noise From WTGs Noise [m] [m] [db(a)] [db(a)] AO Noise Sensitive Point: 45 db Dist: 0 m (279) 395,662 5,170,885 30 1.8 45.0 41.4 Yes AP Noise Sensitive Point: 45 db Dist: 0 m (280) 395,608 5,170,700 30 1.8 45.0 40.1 Yes AQ Noise Sensitive Point: 45 db Dist: 0 m (281) 395,561 5,170,851 30 1.8 45.0 41.2 Yes AR Noise Sensitive Point: 45 db Dist: 0 m (282) 395,530 5,170,868 30 1.8 45.0 41.3 Yes AS Noise Sensitive Point: 45 db Dist: 0 m (283) 395,496 5,170,841 30 1.8 45.0 41.1 Yes AT Noise Sensitive Point: 45 db Dist: 0 m (284) 396,164 5,171,094 30 1.8 45.0 40.8 Yes AU Noise Sensitive Point: 45 db Dist: 0 m (285) 394,892 5,170,626 30 1.8 45.0 41.5 Yes AV Noise Sensitive Point: 45 db Dist: 0 m (286) 394,786 5,170,653 30 1.8 45.0 42.0 Yes AW Noise Sensitive Point: 45 db Dist: 0 m (287) 394,722 5,170,491 30 1.8 45.0 41.8 Yes AX Noise Sensitive Point: 45 db Dist: 0 m (288) 394,618 5,170,775 30 1.8 45.0 43.3 Yes AY Noise Sensitive Point: 45 db Dist: 0 m (289) 394,694 5,170,513 30 1.8 45.0 41.9 Yes AZ Noise Sensitive Point: 45 db Dist: 0 m (290) 394,280 5,170,750 29 1.8 45.0 44.5 Yes BA Noise Sensitive Point: 45 db Dist: 0 m (291) 394,126 5,170,534 30 1.8 45.0 44.1 Yes BB Noise Sensitive Point: 45 db Dist: 0 m (292) 394,072 5,170,454 30 1.8 45.0 44.4 Yes BC Noise Sensitive Point: 45 db Dist: 0 m (293) 394,017 5,170,496 30 1.8 45.0 44.5 Yes BD Noise Sensitive Point: 45 db Dist: 0 m (294) 393,665 5,170,391 30 1.8 45.0 45.8 No BE Noise Sensitive Point: 45 db Dist: 0 m (295) 393,479 5,170,348 30 1.8 45.0 46.3 No BF Noise Sensitive Point: 45 db Dist: 0 m (296) 393,432 5,170,355 30 1.8 45.0 46.4 No BG Noise Sensitive Point: 45 db Dist: 0 m (297) 393,319 5,170,312 30 1.8 45.0 46.8 No BH Noise Sensitive Point: 45 db Dist: 0 m (298) 393,270 5,170,318 30 1.8 45.0 46.8 No BI Noise Sensitive Point: 45 db Dist: 0 m (299) 393,222 5,170,310 30 1.8 45.0 46.9 No BJ Noise Sensitive Point: 45 db Dist: 0 m (300) 392,377 5,170,126 25 1.8 45.0 45.5 No BK Noise Sensitive Point: 45 db Dist: 0 m (301) 392,494 5,168,269 13 1.8 45.0 43.9 Yes BL Noise Sensitive Point: 45 db Dist: 0 m (302) 392,161 5,168,252 5 1.8 45.0 41.3 Yes BM Noise Sensitive Point: 45 db Dist: 0 m (303) 392,252 5,168,325 9 1.8 45.0 42.3 Yes BN Noise Sensitive Point: 45 db Dist: 0 m (304) 392,165 5,168,471 7 1.8 45.0 42.3 Yes BO Noise Sensitive Point: 45 db Dist: 0 m (305) 392,478 5,168,688 20 1.8 45.0 46.4 No BP Noise Sensitive Point: 45 db Dist: 0 m (306) 392,071 5,168,671 5 1.8 45.0 42.3 Yes BQ Noise Sensitive Point: 45 db Dist: 0 m (307) 392,120 5,168,739 7 1.8 45.0 43.0 Yes BR Noise Sensitive Point: 45 db Dist: 0 m (308) 392,100 5,168,939 6 1.8 45.0 43.5 Yes BS Noise Sensitive Point: 45 db Dist: 0 m (309) 392,346 5,168,932 19 1.8 45.0 46.2 No BT Noise Sensitive Point: 45 db Dist: 0 m (310) 392,097 5,169,007 6 1.8 45.0 43.7 Yes BU Noise Sensitive Point: 45 db Dist: 0 m (311) 392,219 5,169,266 14 1.8 45.0 45.8 No BV Noise Sensitive Point: 45 db Dist: 0 m (312) 392,149 5,169,369 9 1.8 45.0 45.1 No BW Noise Sensitive Point: 45 db Dist: 0 m (313) 392,381 5,170,181 26 1.8 45.0 45.2 No BX Noise Sensitive Point: 45 db Dist: 0 m (314) 392,316 5,170,341 26 1.8 45.0 44.2 Yes BY Noise Sensitive Point: 45 db Dist: 0 m (315) 392,245 5,170,485 24 1.8 45.0 43.5 Yes BZ Noise Sensitive Point: 45 db Dist: 0 m (316) 392,472 5,171,606 7 1.8 45.0 45.1 No CA Noise Sensitive Point: 45 db Dist: 0 m (317) 392,313 5,171,618 5 1.8 45.0 43.3 Yes CB Noise Sensitive Point: 45 db Dist: 0 m (318) 392,487 5,171,738 14 1.8 45.0 45.2 No CC Noise Sensitive Point: 45 db Dist: 0 m (319) 392,534 5,172,502 31 1.8 45.0 43.9 Yes CD Noise Sensitive Point: 45 db Dist: 0 m (320) 392,595 5,172,454 32 1.8 45.0 44.9 Yes CE Noise Sensitive Point: 45 db Dist: 0 m (321) 392,597 5,172,495 31 1.8 45.0 44.6 Yes CF Noise Sensitive Point: 45 db Dist: 0 m (322) 392,226 5,172,280 17 1.8 45.0 41.7 Yes CG Noise Sensitive Point: 45 db Dist: 0 m (323) 392,327 5,172,543 19 1.8 45.0 41.7 Yes CH Noise Sensitive Point: 45 db Dist: 0 m (324) 392,352 5,172,643 16 1.8 45.0 41.5 Yes CI Noise Sensitive Point: 45 db Dist: 0 m (325) 392,634 5,173,651 11 1.8 45.0 39.8 Yes CJ Noise Sensitive Point: 45 db Dist: 0 m (326) 392,847 5,173,560 20 1.8 45.0 41.3 Yes CK Noise Sensitive Point: 45 db Dist: 0 m (327) 392,745 5,173,943 9 1.8 45.0 40.6 Yes CL Noise Sensitive Point: 45 db Dist: 0 m (328) 392,785 5,174,006 9 1.8 45.0 40.9 Yes CM Noise Sensitive Point: 45 db Dist: 0 m (329) 392,835 5,174,201 7 1.8 45.0 40.8 Yes CN Noise Sensitive Point: 45 db Dist: 0 m (330) 392,843 5,174,347 5 1.8 45.0 40.1 Yes CO Noise Sensitive Point: 45 db Dist: 0 m (331) 392,877 5,174,361 7 1.8 45.0 40.3 Yes CP Noise Sensitive Point: 45 db Dist: 0 m (332) 392,847 5,174,389 5 1.8 45.0 39.9 Yes CQ Noise Sensitive Point: 45 db Dist: 0 m (333) 392,933 5,174,387 9 1.8 45.0 40.6 Yes CR Noise Sensitive Point: 45 db Dist: 0 m (334) 392,943 5,174,359 9 1.8 45.0 41.0 Yes CS Noise Sensitive Point: 45 db Dist: 0 m (335) 392,904 5,174,384 7 1.8 45.0 40.4 Yes CT Noise Sensitive Point: 45 db Dist: 0 m (336) 392,858 5,174,421 6 1.8 45.0 39.7 Yes CU Noise Sensitive Point: 45 db Dist: 0 m (337) 392,947 5,174,424 9 1.8 45.0 40.5 Yes CV Noise Sensitive Point: 45 db Dist: 0 m (338) 392,931 5,174,499 7 1.8 45.0 39.7 Yes CW Noise Sensitive Point: 45 db Dist: 0 m (339) 393,048 5,174,478 11 1.8 45.0 40.8 Yes Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 4 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page Noise sensitive area UTM NAD83 Zone: 20 Demands Sound Level Demands fulfilled? No. Name East North Z Imission height Noise From WTGs Noise [m] [m] [db(a)] [db(a)] CX Noise Sensitive Point: 45 db Dist: 0 m (340) 393,057 5,174,503 11 1.8 45.0 40.6 Yes CY Noise Sensitive Point: 45 db Dist: 0 m (341) 393,024 5,174,537 10 1.8 45.0 40.1 Yes CZ Noise Sensitive Point: 45 db Dist: 0 m (342) 393,135 5,174,591 13 1.8 45.0 40.2 Yes DA Noise Sensitive Point: 45 db Dist: 0 m (343) 393,146 5,174,712 12 1.8 45.0 39.2 Yes DB Noise Sensitive Point: 45 db Dist: 0 m (344) 393,171 5,174,738 12 1.8 45.0 39.1 Yes DC Noise Sensitive Point: 45 db Dist: 0 m (345) 393,251 5,174,791 13 1.8 45.0 39.0 Yes DD Noise Sensitive Point: 45 db Dist: 0 m (346) 393,246 5,174,841 12 1.8 45.0 38.6 Yes DE Noise Sensitive Point: 45 db Dist: 0 m (347) 393,330 5,174,877 13 1.8 45.0 38.6 Yes DF Noise Sensitive Point: 45 db Dist: 0 m (348) 393,370 5,174,997 11 1.8 45.0 37.9 Yes DG Noise Sensitive Point: 45 db Dist: 0 m (349) 393,441 5,175,059 11 1.8 45.0 37.6 Yes DH Noise Sensitive Point: 45 db Dist: 0 m (350) 393,477 5,175,082 11 1.8 45.0 37.6 Yes DI Noise Sensitive Point: 45 db Dist: 0 m (351) 393,667 5,175,167 11 1.8 45.0 37.5 Yes DJ Noise Sensitive Point: 45 db Dist: 0 m (352) 393,660 5,175,254 9 1.8 45.0 37.1 Yes DK Noise Sensitive Point: 45 db Dist: 0 m (353) 393,716 5,175,234 9 1.8 45.0 37.3 Yes DL Noise Sensitive Point: 45 db Dist: 0 m (354) 393,771 5,175,278 9 1.8 45.0 37.2 Yes DM Noise Sensitive Point: 45 db Dist: 0 m (355) 393,636 5,175,387 6 1.8 45.0 36.6 Yes DN Noise Sensitive Point: 45 db Dist: 0 m (356) 393,793 5,175,319 8 1.8 45.0 37.1 Yes DO Noise Sensitive Point: 45 db Dist: 0 m (357) 393,873 5,175,359 7 1.8 45.0 37.2 Yes DP Noise Sensitive Point: 45 db Dist: 0 m (358) 393,812 5,175,427 5 1.8 45.0 36.8 Yes DQ Noise Sensitive Point: 45 db Dist: 0 m (359) 394,206 5,175,691 5 1.8 45.0 37.8 Yes DR Noise Sensitive Point: 45 db Dist: 0 m (360) 394,052 5,175,819 3 1.8 45.0 37.0 Yes DS Noise Sensitive Point: 45 db Dist: 0 m (361) 394,248 5,175,705 5 1.8 45.0 38.0 Yes DT Noise Sensitive Point: 45 db Dist: 0 m (362) 394,187 5,175,872 4 1.8 45.0 37.7 Yes DU Noise Sensitive Point: 45 db Dist: 0 m (363) 394,288 5,176,008 4 1.8 45.0 38.4 Yes DV Noise Sensitive Point: 45 db Dist: 0 m (364) 394,408 5,176,146 5 1.8 45.0 39.5 Yes DW Noise Sensitive Point: 45 db Dist: 0 m (365) 394,695 5,175,931 12 1.8 45.0 42.1 Yes DX Noise Sensitive Point: 45 db Dist: 0 m (366) 394,551 5,176,224 6 1.8 45.0 41.1 Yes DY Noise Sensitive Point: 45 db Dist: 0 m (367) 394,615 5,176,395 5 1.8 45.0 41.9 Yes DZ Noise Sensitive Point: 45 db Dist: 0 m (368) 394,743 5,176,663 4 1.8 45.0 42.4 Yes EA Noise Sensitive Point: 45 db Dist: 0 m (369) 394,652 5,176,436 6 1.8 45.0 42.4 Yes EB Noise Sensitive Point: 45 db Dist: 0 m (370) 394,782 5,176,715 5 1.8 45.0 42.4 Yes EC Noise Sensitive Point: 45 db Dist: 0 m (371) 395,097 5,177,031 12 1.8 45.0 40.8 Yes ED Noise Sensitive Point: 45 db Dist: 0 m (372) 395,057 5,177,080 10 1.8 45.0 40.0 Yes EE Noise Sensitive Point: 45 db Dist: 0 m (373) 395,147 5,177,076 13 1.8 45.0 40.4 Yes EF Noise Sensitive Point: 45 db Dist: 0 m (374) 395,107 5,177,121 12 1.8 45.0 39.7 Yes EG Noise Sensitive Point: 45 db Dist: 0 m (375) 395,151 5,177,201 12 1.8 45.0 39.0 Yes EH Noise Sensitive Point: 45 db Dist: 0 m (376) 395,174 5,177,229 13 1.8 45.0 38.7 Yes EI Noise Sensitive Point: 45 db Dist: 0 m (377) 395,225 5,177,243 13 1.8 45.0 38.7 Yes EJ Noise Sensitive Point: 45 db Dist: 0 m (378) 395,356 5,177,399 14 1.8 45.0 37.3 Yes EK Noise Sensitive Point: 45 db Dist: 0 m (379) 395,474 5,177,710 10 1.8 45.0 34.9 Yes EL Noise Sensitive Point: 45 db Dist: 0 m (380) 395,413 5,177,707 10 1.8 45.0 34.9 Yes EM Noise Sensitive Point: 45 db Dist: 0 m (381) 394,208 5,175,794 4 1.8 45.0 37.8 Yes EN Noise Sensitive Point: 45 db Dist: 0 m (382) 394,592 5,176,446 4 1.8 45.0 41.5 Yes EO Noise Sensitive Point: 45 db Dist: 0 m (383) 393,505 5,175,058 11 1.8 45.0 37.8 Yes EP Noise Sensitive Point: 45 db Dist: 0 m (384) 393,568 5,175,032 13 1.8 45.0 38.0 Yes EQ Noise Sensitive Point: 45 db Dist: 0 m (385) 393,623 5,175,046 13 1.8 45.0 38.0 Yes ER Noise Sensitive Point: 45 db Dist: 0 m (386) 393,754 5,174,930 17 1.8 45.0 38.9 Yes ES Noise Sensitive Point: 45 db Dist: 0 m (387) 393,827 5,174,890 19 1.8 45.0 39.2 Yes ET Noise Sensitive Point: 45 db Dist: 0 m (388) 393,954 5,174,815 22 1.8 45.0 39.8 Yes EU Noise Sensitive Point: 45 db Dist: 0 m (389) 393,984 5,174,803 22 1.8 45.0 39.9 Yes EV Noise Sensitive Point: 45 db Dist: 0 m (390) 394,109 5,174,714 22 1.8 45.0 40.5 Yes EW Noise Sensitive Point: 45 db Dist: 0 m (391) 394,612 5,174,379 25 1.8 45.0 41.7 Yes EX Noise Sensitive Point: 45 db Dist: 0 m (392) 394,656 5,174,494 26 1.8 45.0 41.1 Yes EY Noise Sensitive Point: 45 db Dist: 0 m (393) 395,106 5,174,244 30 1.8 45.0 41.2 Yes EZ Noise Sensitive Point: 45 db Dist: 0 m (394) 395,177 5,174,185 31 1.8 45.0 41.1 Yes FA Noise Sensitive Point: 45 db Dist: 0 m (395) 395,207 5,174,170 31 1.8 45.0 41.1 Yes FB Noise Sensitive Point: 45 db Dist: 0 m (396) 395,312 5,174,135 31 1.8 45.0 40.9 Yes FC Noise Sensitive Point: 45 db Dist: 0 m (397) 395,647 5,173,967 33 1.8 45.0 40.2 Yes FD Noise Sensitive Point: 45 db Dist: 0 m (398) 395,670 5,173,884 33 1.8 45.0 40.5 Yes FE Noise Sensitive Point: 45 db Dist: 0 m (399) 395,720 5,173,942 34 1.8 45.0 40.1 Yes FF Noise Sensitive Point: 45 db Dist: 0 m (400) 395,841 5,173,879 34 1.8 45.0 39.8 Yes Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 5 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page Noise sensitive area UTM NAD83 Zone: 20 Demands Sound Level Demands fulfilled? No. Name East North Z Imission height Noise From WTGs Noise [m] [m] [db(a)] [db(a)] FG Noise Sensitive Point: 45 db Dist: 0 m (401) 396,012 5,173,787 35 1.8 45.0 39.5 Yes FH Noise Sensitive Point: 45 db Dist: 0 m (402) 396,344 5,173,661 35 1.8 45.0 38.2 Yes FI Noise Sensitive Point: 45 db Dist: 0 m (403) 394,803 5,174,612 30 1.8 45.0 41.1 Yes FJ Noise Sensitive Point: 45 db Dist: 0 m (404) 394,938 5,174,610 30 1.8 45.0 41.8 Yes FK Noise Sensitive Point: 45 db Dist: 0 m (405) 394,921 5,174,652 30 1.8 45.0 41.9 Yes FL Noise Sensitive Point: 45 db Dist: 0 m (406) 394,177 5,174,640 23 1.8 45.0 41.0 Yes FM Noise Sensitive Point: 45 db Dist: 0 m (407) 394,196 5,174,498 27 1.8 45.0 42.3 Yes FN Noise Sensitive Point: 45 db Dist: 0 m (408) 398,754 5,174,280 35 1.8 45.0 29.4 Yes FO Noise Sensitive Point: 45 db Dist: 0 m (409) 395,917 5,172,607 33 1.8 45.0 44.4 Yes FP Noise Sensitive Point: 45 db Dist: 0 m (410) 398,707 5,174,284 35 1.8 45.0 29.5 Yes FQ Noise Sensitive Point: 45 db Dist: 0 m (411) 398,742 5,174,214 35 1.8 45.0 29.5 Yes FR Noise Sensitive Point: 45 db Dist: 0 m (412) 399,123 5,174,376 35 1.8 45.0 28.5 Yes FS Noise Sensitive Point: 45 db Dist: 0 m (413) 394,053 5,174,770 22 1.8 45.0 40.1 Yes FT Noise Sensitive Point: 45 db Dist: 0 m (414) 399,439 5,174,445 35 1.8 45.0 27.8 Yes FU Noise Sensitive Point: 45 db Dist: 0 m (415) 399,572 5,174,587 35 1.8 45.0 27.4 Yes FV Noise Sensitive Point: 45 db Dist: 0 m (416) 399,636 5,174,634 35 1.8 45.0 27.3 Yes FW Noise Sensitive Point: 45 db Dist: 0 m (417) 396,414 5,173,038 34 1.8 45.0 39.4 Yes FX Noise Sensitive Point: 45 db Dist: 0 m (418) 396,442 5,172,841 33 1.8 45.0 39.5 Yes FY Noise Sensitive Point: 45 db Dist: 0 m (419) 396,296 5,172,625 33 1.8 45.0 40.8 Yes FZ Noise Sensitive Point: 45 db Dist: 0 m (420) 398,193 5,174,147 35 1.8 45.0 30.9 Yes GA Noise Sensitive Point: 45 db Dist: 0 m (421) 396,196 5,172,340 32 1.8 45.0 41.9 Yes GB Noise Sensitive Point: 45 db Dist: 0 m (422) 397,128 5,167,167 16 1.8 45.0 29.6 Yes GC Noise Sensitive Point: 45 db Dist: 0 m (423) 396,806 5,167,054 17 1.8 45.0 30.2 Yes GD Noise Sensitive Point: 45 db Dist: 0 m (424) 396,634 5,167,149 18 1.8 45.0 30.7 Yes GE Noise Sensitive Point: 45 db Dist: 0 m (425) 396,587 5,167,108 18 1.8 45.0 30.8 Yes GF Noise Sensitive Point: 45 db Dist: 0 m (426) 396,300 5,167,030 17 1.8 45.0 31.4 Yes GG Noise Sensitive Point: 45 db Dist: 0 m (427) 396,201 5,167,087 17 1.8 45.0 31.7 Yes GH Noise Sensitive Point: 45 db Dist: 0 m (428) 395,866 5,167,115 16 1.8 45.0 32.8 Yes GI Noise Sensitive Point: 45 db Dist: 0 m (429) 395,831 5,166,905 14 1.8 45.0 32.5 Yes GJ Noise Sensitive Point: 45 db Dist: 0 m (430) 395,295 5,167,003 15 1.8 45.0 34.6 Yes GK Noise Sensitive Point: 45 db Dist: 0 m (431) 395,179 5,167,010 15 1.8 45.0 35.1 Yes GL Noise Sensitive Point: 45 db Dist: 0 m (432) 395,006 5,167,080 16 1.8 45.0 36.0 Yes GM Noise Sensitive Point: 45 db Dist: 0 m (433) 395,001 5,167,017 15 1.8 45.0 35.9 Yes GN Noise Sensitive Point: 45 db Dist: 0 m (434) 394,760 5,167,129 16 1.8 45.0 37.3 Yes GO Noise Sensitive Point: 45 db Dist: 0 m (435) 394,568 5,167,102 16 1.8 45.0 38.5 Yes GP Noise Sensitive Point: 45 db Dist: 0 m (436) 394,287 5,167,342 18 1.8 45.0 40.5 Yes GQ Noise Sensitive Point: 45 db Dist: 0 m (437) 394,065 5,167,418 18 1.8 45.0 42.1 Yes GR Noise Sensitive Point: 45 db Dist: 0 m (438) 393,808 5,167,649 21 1.8 45.0 43.7 Yes GS Noise Sensitive Point: 45 db Dist: 0 m (439) 393,400 5,167,484 17 1.8 45.0 44.0 Yes GT Noise Sensitive Point: 45 db Dist: 0 m (440) 393,268 5,167,402 14 1.8 45.0 43.5 Yes GU Noise Sensitive Point: 45 db Dist: 0 m (441) 393,239 5,167,486 15 1.8 45.0 43.2 Yes GV Noise Sensitive Point: 45 db Dist: 0 m (442) 393,171 5,167,425 13 1.8 45.0 42.8 Yes GW Noise Sensitive Point: 45 db Dist: 0 m (443) 393,108 5,167,413 12 1.8 45.0 42.4 Yes GX Noise Sensitive Point: 45 db Dist: 0 m (444) 393,036 5,167,394 11 1.8 45.0 41.9 Yes GY Noise Sensitive Point: 45 db Dist: 0 m (445) 392,942 5,167,395 9 1.8 45.0 41.3 Yes GZ Noise Sensitive Point: 45 db Dist: 0 m (446) 397,513 5,165,849 9 1.8 45.0 27.1 Yes HA Noise Sensitive Point: 45 db Dist: 0 m (447) 397,479 5,165,717 8 1.8 45.0 27.0 Yes HB Noise Sensitive Point: 45 db Dist: 0 m (448) 397,395 5,165,760 9 1.8 45.0 27.2 Yes HC Noise Sensitive Point: 45 db Dist: 0 m (449) 397,340 5,165,614 9 1.8 45.0 27.1 Yes HD Noise Sensitive Point: 45 db Dist: 0 m (450) 397,188 5,165,816 10 1.8 45.0 27.6 Yes HE Noise Sensitive Point: 45 db Dist: 0 m (451) 397,222 5,165,608 9 1.8 45.0 27.2 Yes HF Noise Sensitive Point: 45 db Dist: 0 m (452) 397,152 5,165,595 9 1.8 45.0 27.3 Yes HG Noise Sensitive Point: 45 db Dist: 0 m (453) 397,045 5,165,815 10 1.8 45.0 27.9 Yes HH Noise Sensitive Point: 45 db Dist: 0 m (454) 397,054 5,165,082 6 1.8 45.0 26.7 Yes HI Noise Sensitive Point: 45 db Dist: 0 m (455) 396,615 5,164,758 4 1.8 45.0 26.8 Yes HJ Noise Sensitive Point: 45 db Dist: 0 m (456) 396,494 5,164,726 4 1.8 45.0 26.9 Yes HK Noise Sensitive Point: 45 db Dist: 0 m (457) 396,341 5,164,704 4 1.8 45.0 27.1 Yes HL Noise Sensitive Point: 45 db Dist: 0 m (458) 396,329 5,164,640 4 1.8 45.0 27.0 Yes HM Noise Sensitive Point: 45 db Dist: 0 m (459) 396,254 5,164,712 4 1.8 45.0 27.2 Yes HN Noise Sensitive Point: 45 db Dist: 0 m (460) 396,195 5,164,740 4 1.8 45.0 27.4 Yes HO Noise Sensitive Point: 45 db Dist: 0 m (461) 396,183 5,164,697 4 1.8 45.0 27.3 Yes Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 6 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page Noise sensitive area UTM NAD83 Zone: 20 Demands Sound Level Demands fulfilled? No. Name East North Z Imission height Noise From WTGs Noise [m] [m] [db(a)] [db(a)] HP Noise Sensitive Point: 45 db Dist: 0 m (462) 396,153 5,164,694 4 1.8 45.0 27.3 Yes HQ Noise Sensitive Point: 45 db Dist: 0 m (463) 396,120 5,164,685 4 1.8 45.0 27.4 Yes HR Noise Sensitive Point: 45 db Dist: 0 m (464) 396,082 5,164,685 4 1.8 45.0 27.4 Yes HS Noise Sensitive Point: 45 db Dist: 0 m (465) 396,012 5,164,680 4 1.8 45.0 27.5 Yes HT Noise Sensitive Point: 45 db Dist: 0 m (466) 395,727 5,164,661 4 1.8 45.0 27.9 Yes HU Noise Sensitive Point: 45 db Dist: 0 m (467) 395,698 5,164,560 3 1.8 45.0 27.7 Yes HV Noise Sensitive Point: 45 db Dist: 0 m (468) 395,538 5,164,618 3 1.8 45.0 28.0 Yes HW Noise Sensitive Point: 45 db Dist: 0 m (469) 395,502 5,164,608 3 1.8 45.0 28.1 Yes HX Noise Sensitive Point: 45 db Dist: 0 m (470) 395,252 5,164,599 3 1.8 45.0 28.4 Yes HY Noise Sensitive Point: 45 db Dist: 0 m (471) 395,205 5,164,594 3 1.8 45.0 28.4 Yes HZ Noise Sensitive Point: 45 db Dist: 0 m (472) 395,132 5,164,598 3 1.8 45.0 28.5 Yes IA Noise Sensitive Point: 45 db Dist: 0 m (473) 394,822 5,164,654 4 1.8 45.0 29.1 Yes IB Noise Sensitive Point: 45 db Dist: 0 m (474) 394,773 5,164,664 4 1.8 45.0 29.2 Yes IC Noise Sensitive Point: 45 db Dist: 0 m (475) 394,739 5,164,677 4 1.8 45.0 29.2 Yes ID Noise Sensitive Point: 45 db Dist: 0 m (476) 394,657 5,164,695 4 1.8 45.0 29.4 Yes IE Noise Sensitive Point: 45 db Dist: 0 m (477) 394,525 5,164,691 5 1.8 45.0 29.5 Yes IF Noise Sensitive Point: 45 db Dist: 0 m (478) 394,427 5,164,697 5 1.8 45.0 29.7 Yes IG Noise Sensitive Point: 45 db Dist: 0 m (479) 394,284 5,164,680 4 1.8 45.0 29.7 Yes IH Noise Sensitive Point: 45 db Dist: 0 m (480) 394,109 5,164,755 4 1.8 45.0 30.1 Yes II Noise Sensitive Point: 45 db Dist: 0 m (481) 393,517 5,166,005 4 1.8 45.0 38.2 Yes IJ Noise Sensitive Point: 45 db Dist: 0 m (482) 393,421 5,166,136 4 1.8 45.0 39.2 Yes IK Noise Sensitive Point: 45 db Dist: 0 m (483) 393,411 5,166,193 4 1.8 45.0 39.7 Yes IL Noise Sensitive Point: 45 db Dist: 0 m (484) 393,449 5,166,232 5 1.8 45.0 40.5 Yes IM Noise Sensitive Point: 45 db Dist: 0 m (485) 393,260 5,166,289 3 1.8 45.0 39.4 Yes IN Noise Sensitive Point: 45 db Dist: 0 m (486) 393,116 5,166,772 4 1.8 45.0 41.2 Yes IO Noise Sensitive Point: 45 db Dist: 0 m (487) 393,084 5,167,049 6 1.8 45.0 41.9 Yes IP Noise Sensitive Point: 45 db Dist: 0 m (488) 393,068 5,167,076 6 1.8 45.0 41.8 Yes IQ Noise Sensitive Point: 45 db Dist: 0 m (489) 392,908 5,167,288 7 1.8 45.0 40.8 Yes IR Noise Sensitive Point: 45 db Dist: 0 m (490) 392,743 5,167,473 8 1.8 45.0 40.6 Yes IS Noise Sensitive Point: 45 db Dist: 0 m (491) 392,669 5,167,431 6 1.8 45.0 40.0 Yes IT Noise Sensitive Point: 45 db Dist: 0 m (492) 392,668 5,167,515 7 1.8 45.0 40.4 Yes IU Noise Sensitive Point: 45 db Dist: 0 m (493) 399,218 5,171,693 34 1.8 45.0 28.7 Yes IV Noise Sensitive Point: 45 db Dist: 0 m (494) 399,157 5,171,639 34 1.8 45.0 28.8 Yes IW Noise Sensitive Point: 45 db Dist: 0 m (495) 399,075 5,171,609 33 1.8 45.0 29.0 Yes IX Noise Sensitive Point: 45 db Dist: 0 m (496) 399,010 5,171,598 33 1.8 45.0 29.1 Yes IY Noise Sensitive Point: 45 db Dist: 0 m (497) 398,991 5,171,530 33 1.8 45.0 29.2 Yes IZ Noise Sensitive Point: 45 db Dist: 0 m (498) 397,271 5,166,923 15 1.8 45.0 29.0 Yes JA Noise Sensitive Point: 45 db Dist: 0 m (499) 397,150 5,167,066 16 1.8 45.0 29.4 Yes JB Noise Sensitive Point: 45 db Dist: 0 m (500) 395,931 5,164,735 4 1.8 45.0 27.7 Yes JC Noise Sensitive Point: 45 db Dist: 0 m (501) 395,770 5,164,777 4 1.8 45.0 28.1 Yes JD Noise Sensitive Point: 45 db Dist: 0 m (502) 394,947 5,164,480 3 1.8 45.0 28.4 Yes JE Noise Sensitive Point: 45 db Dist: 0 m (503) 394,216 5,164,605 3 1.8 45.0 29.5 Yes JF Noise Sensitive Point: 45 db Dist: 0 m (504) 392,457 5,167,428 1 1.8 45.0 39.0 Yes JG Noise Sensitive Point: 45 db Dist: 0 m (505) 392,447 5,167,494 1 1.8 45.0 39.3 Yes JH Noise Sensitive Point: 45 db Dist: 0 m (506) 392,380 5,167,381 0 1.8 45.0 38.5 Yes JI Noise Sensitive Point: 45 db Dist: 0 m (507) 392,381 5,167,468 1 1.8 45.0 38.9 Yes JJ Noise Sensitive Point: 45 db Dist: 0 m (508) 394,011 5,164,596 2 1.8 45.0 29.6 Yes JK Noise Sensitive Point: 45 db Dist: 0 m (509) 393,939 5,164,557 2 1.8 45.0 29.5 Yes JL Noise Sensitive Point: 45 db Dist: 0 m (510) 393,962 5,164,586 2 1.8 45.0 29.6 Yes JM Noise Sensitive Point: 45 db Dist: 0 m (783) 392,283 5,169,713 16 1.8 45.0 46.8 No Distances (m) WTG NSA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 A 1869 2523 1874 4783 7726 9071 3859 4991 6289 1131 9205 9100 8803 8911 6400 6245 5915 6051 6205 5753 5272 4830 B 1913 2498 1825 4735 7685 9027 3820 4963 6241 1127 9163 9059 8760 8869 6355 6198 5872 6011 6169 5717 5228 4787 C 1805 2371 1788 4692 7606 8960 3733 4841 6198 969 9089 8978 8690 8792 6294 6145 5801 5929 6070 5619 5160 4719 D 7020 5043 6427 5701 4746 6027 4710 3033 5904 6331 5760 5317 5737 5420 5243 5506 4738 4314 3483 3645 4859 4917 E 3908 937 1966 2406 4532 5990 855 1646 3675 2480 6048 5873 5695 5724 3496 3467 2881 2875 2860 2425 2337 1960 F 5365 3082 4441 4003 4151 5649 2800 1207 4576 4454 5519 5171 5334 5157 4029 4209 3406 3070 2392 2305 3306 3237 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 7 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 G 7123 5173 6560 5835 4839 6103 4848 3171 6026 6452 5829 5382 5816 5492 5362 5627 4863 4436 3604 3773 4990 5051 H 7175 5230 6618 5886 4867 6123 4904 3226 6069 6508 5846 5397 5837 5510 5404 5670 4908 4480 3647 3820 5039 5103 I 7099 5138 6524 5794 4806 6073 4808 3131 5987 6421 5802 5355 5786 5464 5323 5588 4823 4397 3565 3733 4949 5011 J 7068 5100 6485 5757 4781 6054 4769 3092 5953 6385 5784 5339 5765 5445 5291 5554 4789 4363 3531 3697 4913 4973 K 6986 5025 6413 5710 4782 6067 4708 3033 5925 6306 5802 5359 5777 5461 5266 5527 4758 4334 3505 3662 4872 4926 L 6903 4908 6290 5574 4674 5973 4575 2898 5795 6201 5714 5275 5681 5371 5138 5397 4626 4204 3376 3528 4737 4790 M 6787 4774 6153 5450 4607 5925 4441 2766 5690 6072 5674 5240 5630 5329 5038 5293 4518 4099 3274 3416 4618 4666 N 6760 4741 6121 5420 4591 5913 4408 2733 5665 6041 5665 5232 5618 5319 5014 5268 4492 4074 3250 3389 4590 4636 O 6611 4589 5972 5308 4566 5910 4274 2603 5585 5888 5671 5244 5612 5322 4941 5190 4409 3996 3178 3299 4489 4524 P 6747 4668 6032 5277 4432 5760 4289 2610 5507 5991 5515 5085 5464 5168 4854 5110 4336 3916 3091 3235 4441 4493 Q 6656 4600 5973 5265 4484 5824 4252 2577 5522 5912 5584 5156 5526 5235 4875 5126 4348 3932 3111 3241 4438 4481 R 6572 4539 5920 5257 4535 5885 4221 2550 5540 5841 5649 5225 5586 5300 4898 5145 4363 3951 3134 3252 4439 4473 S 6392 4325 5703 5060 4442 5819 4007 2340 5377 5637 5597 5182 5516 5245 4745 4985 4197 3792 2984 3081 4254 4277 T 6005 3888 5265 4703 4338 5767 3596 1944 5107 5211 5576 5181 5458 5218 4500 4722 3924 3538 2761 2801 3930 3923 U 5958 3771 5130 4524 4190 5630 3430 1771 4928 5120 5448 5061 5320 5089 4324 4544 3745 3361 2589 2622 3749 3743 V 5955 3715 5058 4403 4071 5517 3328 1662 4799 5085 5340 4957 5207 4981 4195 4414 3616 3232 2461 2492 3623 3622 W 5735 3590 4971 4485 4317 5775 3332 1703 4959 4917 5605 5227 5463 5245 4374 4580 3778 3409 2663 2657 3742 3710 X 5729 3458 4801 4209 4059 5529 3093 1441 4669 4835 5371 5003 5216 5011 4085 4290 3488 3120 2380 2367 3456 3432 Y 5768 3503 4847 4244 4061 5528 3135 1480 4693 4879 5367 4996 5215 5006 4105 4313 3511 3140 2394 2389 3486 3466 Z 5581 3397 4775 4320 4272 5747 3143 1529 4834 4736 5591 5224 5433 5230 4262 4459 3655 3298 2575 2540 3595 3548 AA 5730 3459 4803 4210 4058 5529 3094 1441 4669 4836 5371 5003 5216 5010 4085 4290 3488 3120 2380 2367 3457 3432 AB 5324 2948 4278 3784 4004 5511 2593 988 4368 4356 5394 5058 5195 5033 3830 4004 3202 2874 2219 2109 3090 3018 AC 5199 2690 3972 3434 3844 5364 2238 640 4066 4144 5274 4963 5049 4916 3554 3711 2913 2611 2018 1849 2763 2673 AD 5047 2588 3904 3499 4009 5531 2245 730 4183 4020 5443 5133 5215 5085 3686 3834 3040 2750 2178 1993 2861 2748 AE 4934 2535 3883 3590 4159 5680 2294 851 4309 3940 5593 5281 5365 5234 3821 3964 3172 2890 2327 2135 2977 2848 AF 4948 2447 3754 3379 4007 5532 2101 645 4103 3892 5457 5157 5217 5100 3623 3760 2972 2699 2166 1950 2766 2636 AG 4902 2379 3681 3320 4007 5533 2031 612 4064 3831 5464 5170 5218 5108 3594 3725 2940 2676 2162 1933 2721 2582 AH 4828 2381 3720 3461 4153 5678 2140 770 4221 3802 5603 5303 5362 5246 3752 3883 3098 2834 2310 2089 2875 2728 AI 4857 2328 3631 3297 4029 5555 1993 615 4058 3781 5489 5198 5240 5134 3595 3722 2940 2682 2182 1943 2709 2563 AJ 4843 2330 3642 3328 4058 5584 2018 648 4091 3777 5517 5224 5269 5161 3628 3755 2973 2715 2212 1975 2742 2595 AK 4774 2255 3570 3299 4095 5621 1969 663 4089 3702 5559 5271 5307 5204 3636 3757 2979 2731 2247 1997 2732 2573 AL 4758 2208 3511 3232 4069 5596 1898 624 4033 3666 5539 5255 5281 5184 3587 3703 2928 2687 2220 1959 2672 2508 AM 4738 2132 3408 3105 4016 5542 1768 559 3925 3610 5495 5221 5228 5142 3491 3600 2831 2603 2168 1886 2558 2385 AN 4608 2032 3338 3154 4145 5670 1775 688 4015 3496 5626 5353 5357 5274 3595 3696 2934 2717 2298 2008 2640 2449 AO 4655 2012 3278 3015 4038 5562 1651 592 3874 3501 5526 5261 5250 5175 3460 3558 2799 2589 2195 1890 2499 2307 AP 4464 1854 3161 3075 4219 5742 1651 782 3994 3326 5710 5449 5430 5360 3602 3688 2940 2748 2379 2063 2610 2392 AQ 4584 1914 3171 2949 4065 5588 1561 643 3843 3410 5559 5302 5276 5210 3446 3534 2783 2590 2228 1906 2461 2254 AR 4588 1902 3149 2914 4047 5569 1527 635 3811 3404 5542 5287 5257 5194 3417 3503 2755 2564 2212 1885 2429 2219 AS 4550 1859 3107 2901 4072 5593 1501 671 3814 3362 5570 5317 5282 5222 3427 3509 2765 2581 2240 1908 2430 2213 AT 5061 2536 3821 3354 3902 5426 2117 584 4040 3993 5347 5045 5111 4990 3548 3692 2900 2616 2064 1862 2716 2603 AU 4154 1293 2467 2585 4310 5802 1049 1185 3706 2837 5825 5617 5500 5490 3431 3452 2785 2702 2553 2149 2322 2008 AV 4154 1256 2382 2494 4296 5781 949 1244 3639 2807 5812 5612 5480 5480 3381 3392 2740 2673 2559 2145 2260 1934 AW 3981 1085 2258 2576 4465 5947 1015 1401 3765 2634 5982 5784 5647 5650 3527 3528 2891 2836 2733 2317 2394 2052 AX 4237 1288 2288 2291 4201 5672 741 1305 3462 2837 5718 5532 5374 5390 3229 3226 2597 2557 2504 2074 2092 1750 AY 3996 1088 2241 2542 4447 5927 981 1406 3734 2639 5964 5769 5627 5633 3500 3499 2865 2815 2721 2303 2365 2021 AZ 4160 1176 1988 2107 4297 5738 554 1612 3378 2686 5809 5649 5447 5490 3214 3176 2609 2628 2677 2229 2050 1664 BA 3930 950 1742 2217 4546 5976 725 1851 3550 2433 6055 5901 5687 5739 3423 3368 2833 2872 2941 2492 2254 1849 BB 3846 872 1655 2266 4637 6064 801 1938 3617 2340 6145 5994 5776 5831 3503 3442 2917 2963 3037 2588 2332 1923 BC 3885 919 1629 2205 4613 6033 760 1964 3565 2366 6119 5972 5746 5806 3461 3395 2882 2936 3029 2578 2290 1877 BD 3777 930 1277 2189 4825 6210 947 2323 3622 2195 6318 6195 5931 6015 3589 3490 3045 3146 3311 2854 2424 1991 BE 3745 1002 1104 2193 4933 6298 1073 2508 3654 2137 6418 6306 6024 6120 3657 3542 3134 3257 3457 2998 2502 2063 BF 3756 1038 1073 2179 4944 6304 1093 2547 3646 2143 6427 6318 6031 6130 3658 3538 3141 3270 3481 3021 2506 2067 BG 3727 1088 960 2209 5029 6377 1195 2667 3688 2102 6506 6404 6106 6212 3721 3593 3216 3358 3585 3125 2577 2136 BH 3739 1128 930 2199 5043 6385 1221 2709 3683 2110 6517 6419 6116 6225 3726 3593 3227 3374 3612 3152 2585 2144 BI 3739 1160 892 2204 5071 6407 1258 2756 3692 2106 6542 6447 6139 6251 3744 3608 3251 3403 3649 3189 2608 2166 BJ 3788 1832 543 2500 5635 6877 2021 3605 3996 2171 7056 7008 6629 6789 4188 3994 3788 4013 4371 3912 3137 2708 BK 2108 2097 1382 4289 7231 8573 3368 4547 5796 909 8708 8606 8306 8415 5902 5748 5418 5558 5725 5271 4774 4333 BL 2318 2375 1469 4367 7385 8697 3549 4801 5871 1241 8848 8761 8437 8562 6016 5846 5556 5719 5926 5469 4908 4467 BM 2308 2258 1372 4277 7280 8598 3439 4684 5782 1155 8745 8656 8336 8459 5918 5751 5454 5612 5814 5357 4806 4365 BN 2475 2256 1262 4153 7186 8491 3364 4654 5656 1263 8645 8563 8231 8361 5807 5634 5354 5523 5747 5288 4705 4265 BO 2459 1877 969 3878 6855 8181 3012 4275 5384 1039 8324 8231 7917 8035 5504 5343 5032 5186 5387 4930 4386 3944 BP 2687 2250 1122 3983 7050 8338 3257 4601 5482 1407 8500 8427 8082 8221 5651 5470 5213 5395 5646 5186 4562 4123 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 8 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 BQ 2709 2178 1039 3904 6967 8257 3173 4521 5405 1385 8418 8344 8000 8138 5570 5390 5130 5312 5562 5102 4479 4041 BR 2880 2127 882 3717 6800 8078 3030 4419 5215 1490 8244 8177 7824 7968 5390 5206 4960 5151 5421 4960 4308 3871 BS 2736 1897 767 3664 6693 7995 2883 4224 5168 1277 8150 8070 7736 7867 5312 5141 4859 5032 5271 4811 4210 3770 BT 2937 2110 830 3652 6742 8016 2980 4383 5150 1527 8184 8119 7763 7909 5328 5143 4901 5095 5371 4910 4249 3813 BU 3087 1934 558 3370 6457 7730 2705 4139 4869 1584 7898 7833 7477 7622 5043 4859 4615 4810 5095 4635 3963 3527 BV 3211 1990 553 3291 6401 7662 2680 4145 4786 1705 7835 7777 7411 7563 4974 4784 4557 4762 5066 4605 3905 3471 BW 3838 1845 590 2447 5586 6825 1987 3581 3942 2218 7005 6959 6577 6739 4136 3941 3739 3967 4331 3872 3088 2661 BX 4010 1963 763 2316 5487 6706 1963 3588 3804 2390 6894 6857 6462 6632 4018 3815 3640 3883 4275 3819 2992 2570 BY 4170 2087 923 2209 5408 6607 1965 3613 3687 2550 6802 6775 6367 6546 3922 3710 3563 3820 4240 3787 2918 2504 BZ 5164 2613 1967 1116 4384 5507 1619 3251 2553 3519 5725 5731 5279 5486 2842 2604 2570 2894 3457 3036 1962 1615 CA 5219 2725 1998 1207 4482 5575 1777 3410 2601 3576 5803 5820 5353 5571 2925 2675 2680 3016 3596 3180 2085 1751 CB 5288 2707 2098 1002 4276 5384 1639 3244 2424 3643 5606 5618 5159 5371 2725 2482 2470 2805 3389 2975 1874 1543 CC 6020 3325 2859 590 3708 4709 1965 3348 1710 4377 4959 5009 4500 4746 2115 1832 2009 2410 3119 2765 1533 1367 CD 5961 3253 2809 532 3694 4715 1888 3275 1724 4318 4959 5003 4503 4742 2105 1829 1976 2370 3068 2709 1483 1303 CE 6001 3289 2850 527 3665 4680 1912 3286 1686 4358 4926 4971 4469 4710 2075 1796 1956 2354 3058 2703 1472 1304 CF 5879 3299 2666 927 4087 5066 2095 3586 2059 4234 5324 5383 4864 5117 2492 2203 2384 2777 3466 3097 1883 1671 CG 6107 3463 2914 798 3842 4793 2154 3557 1785 4462 5057 5125 4595 4856 2244 1946 2183 2593 3316 2968 1730 1578 CH 6198 3537 3011 783 3762 4698 2195 3565 1689 4553 4965 5038 4502 4766 2162 1860 2124 2541 3276 2939 1694 1567 CI 7131 4332 4006 1240 2997 3737 2785 3777 804 5493 4041 4169 3570 3880 1467 1130 1743 2189 3020 2808 1651 1798 CJ 7009 4177 3921 1084 2847 3669 2601 3550 674 5377 3953 4058 3485 3775 1285 950 1518 1966 2794 2577 1422 1586 CK 7402 4573 4300 1480 2782 3448 2989 3866 616 5768 3763 3910 3291 3615 1324 998 1710 2145 2982 2815 1737 1949 CL 7459 4621 4364 1532 2723 3375 3029 3876 573 5827 3691 3842 3219 3546 1285 964 1696 2126 2963 2807 1750 1978 CM 7646 4794 4561 1714 2616 3202 3188 3970 560 6016 3528 3694 3056 3394 1258 961 1736 2150 2983 2857 1859 2117 CN 7790 4933 4707 1856 2573 3097 3320 4066 621 6160 3432 3613 2960 3310 1287 1012 1804 2206 3034 2928 1967 2240 CO 7799 4938 4723 1865 2536 3062 3321 4052 601 6171 3397 3577 2924 3273 1259 989 1784 2183 3009 2907 1958 2237 CP 7831 4973 4749 1897 2560 3066 3358 4093 642 6202 3404 3589 2932 3285 1296 1029 1824 2223 3048 2948 1998 2276 CQ 7819 4949 4752 1885 2476 3003 3326 4032 575 6193 3336 3515 2864 3212 1215 954 1753 2147 2970 2876 1946 2236 CR 7790 4920 4725 1856 2472 3015 3297 4004 549 6164 3345 3520 2873 3218 1196 931 1728 2124 2948 2852 1918 2206 CS 7819 4953 4747 1885 2505 3027 3333 4049 595 6192 3361 3542 2889 3238 1241 977 1775 2170 2994 2898 1961 2246 CT 7861 5001 4782 1927 2543 3036 3384 4108 654 6233 3376 3564 2904 3259 1297 1036 1834 2229 3052 2957 2018 2299 CU 7854 4982 4790 1920 2455 2968 3356 4049 591 6229 3303 3485 2830 3181 1215 962 1764 2153 2974 2886 1969 2263 CV 7930 5058 4863 1996 2457 2930 3433 4115 657 6305 3271 3462 2799 3157 1260 1019 1822 2206 3022 2943 2041 2338 CW 7897 5012 4851 1967 2345 2857 3376 4020 570 6276 3190 3370 2717 3067 1146 915 1719 2096 2909 2837 1961 2273 CX 7921 5034 4877 1992 2332 2834 3397 4033 586 6300 3167 3350 2695 3046 1150 925 1729 2102 2914 2846 1978 2293 CY 7958 5074 4908 2027 2359 2835 3440 4081 632 6336 3174 3363 2701 3057 1195 973 1776 2149 2959 2893 2024 2336 CZ 8002 5104 4972 2079 2241 2717 3460 4049 632 6385 3052 3239 2580 2934 1129 934 1732 2090 2891 2841 2019 2348 DA 8122 5221 5093 2200 2216 2628 3574 4136 743 6505 2973 3173 2501 2866 1192 1023 1813 2157 2947 2914 2123 2460 DB 8146 5242 5122 2227 2189 2592 3593 4141 761 6530 2937 3139 2466 2832 1190 1030 1816 2155 2941 2913 2137 2477 DC 8193 5280 5184 2283 2105 2497 3626 4135 798 6581 2841 3044 2370 2736 1168 1034 1807 2131 2906 2893 2155 2506 DD 8243 5330 5233 2332 2108 2469 3676 4178 848 6631 2817 3027 2347 2718 1208 1081 1850 2170 2940 2932 2203 2556 DE 8274 5353 5279 2374 2023 2381 3693 4158 877 6665 2728 2936 2257 2626 1180 1078 1831 2136 2895 2901 2208 2571 DF 8391 5466 5403 2497 1985 2274 3804 4235 997 6785 2628 2850 2159 2538 1253 1177 1911 2199 2941 2964 2310 2680 DG 8450 5518 5475 2567 1918 2180 3853 4248 1062 6847 2535 2760 2066 2448 1268 1217 1930 2202 2929 2967 2351 2728 DH 8471 5536 5503 2594 1884 2137 3870 4248 1089 6870 2492 2718 2023 2406 1271 1231 1933 2198 2918 2963 2364 2745 DI 8551 5602 5619 2710 1705 1937 3931 4225 1207 6960 2286 2510 1817 2198 1275 1289 1934 2161 2845 2921 2410 2807 DJ 8638 5689 5703 2794 1727 1887 4018 4305 1290 7047 2246 2484 1779 2170 1360 1376 2018 2239 2914 2997 2497 2895 DK 8617 5665 5694 2786 1669 1856 3993 4261 1285 7029 2209 2439 1740 2126 1325 1354 1981 2194 2862 2950 2469 2871 DL 8661 5705 5748 2841 1624 1785 4033 4274 1343 7076 2139 2372 1670 2058 1354 1398 2006 2206 2860 2959 2506 2912 DM 8772 5824 5830 2920 1782 1827 4153 4433 1415 7179 2202 2463 1740 2147 1494 1511 2152 2367 3030 3122 2632 3029 DN 8702 5745 5792 2886 1612 1742 4072 4301 1389 7118 2099 2336 1631 2023 1390 1440 2039 2233 2877 2983 2545 2952 DO 8742 5781 5848 2944 1546 1655 4108 4302 1453 7163 2010 2248 1542 1934 1416 1485 2058 2234 2860 2979 2578 2990 DP 8810 5852 5902 2995 1625 1661 4179 4389 1498 7227 2028 2283 1564 1968 1492 1549 2138 2321 2951 3068 2651 3059 DQ 9083 6108 6249 3358 1387 1187 4439 4481 1892 7522 1556 1831 1096 1515 1739 1870 2338 2438 2960 3145 2910 3337 DR 9205 6235 6336 3435 1587 1245 4564 4654 1947 7635 1644 1956 1201 1641 1862 1964 2479 2603 3147 3320 3033 3454 DS 9099 6122 6273 3385 1361 1146 4454 4480 1923 7541 1512 1787 1052 1470 1757 1894 2349 2442 2953 3144 2926 3355 DT 9263 6288 6419 3524 1511 1102 4619 4658 2047 7700 1499 1814 1058 1500 1919 2041 2519 2619 3130 3322 3090 3515 DU 9403 6426 6576 3685 1529 949 4759 4755 2213 7846 1359 1699 934 1388 2063 2197 2651 2730 3209 3420 3232 3660 DV 9548 6568 6740 3854 1555 784 4904 4853 2389 7998 1207 1574 809 1270 2215 2362 2789 2847 3290 3520 3380 3812 DW 9357 6372 6617 3763 1214 664 4720 4573 2349 7827 1012 1303 553 988 2071 2262 2596 2607 2992 3248 3213 3651 DX 9636 6654 6854 3977 1539 623 4994 4892 2524 8094 1052 1434 674 1136 2318 2480 2873 2909 3315 3563 3476 3910 DY 9812 6828 7036 4159 1657 527 5171 5044 2705 8273 971 1391 663 1112 2498 2663 3048 3075 3459 3719 3655 4090 DZ 10090 7106 7330 4456 1855 465 5452 5280 3002 8557 880 1346 723 1110 2789 2958 3328 3337 3685 3963 3940 4377 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 9 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 EA 9856 6872 7086 4211 1678 489 5216 5076 2758 8319 934 1363 648 1090 2547 2714 3093 3113 3488 3752 3701 4137 EB 10145 7161 7391 4518 1892 463 5508 5324 3066 8614 860 1332 740 1107 2849 3020 3384 3389 3727 4009 3998 4436 EC 10494 7510 7788 4931 2135 610 5870 5592 3494 8981 790 1259 923 1130 3241 3430 3748 3717 3984 4297 4375 4814 ED 10538 7553 7822 4960 2189 662 5911 5645 3518 9021 854 1322 977 1193 3276 3460 3788 3763 4038 4348 4413 4852 EE 10545 7561 7846 4992 2175 653 5923 5631 3558 9034 798 1257 962 1145 3300 3492 3802 3766 4022 4340 4431 4871 EF 10585 7600 7876 5018 2224 699 5960 5680 3578 9071 857 1318 1011 1203 3330 3517 3838 3808 4072 4387 4464 4904 EG 10669 7686 7966 5108 2299 778 6047 5755 3669 9158 903 1351 1087 1256 3420 3608 3925 3891 4146 4465 4553 4993 EH 10700 7716 8000 5143 2325 807 6078 5781 3705 9190 917 1359 1114 1272 3454 3643 3957 3921 4172 4492 4585 5026 EI 10721 7737 8030 5177 2336 824 6102 5790 3742 9213 908 1341 1127 1266 3483 3676 3982 3940 4181 4505 4612 5052 EJ 10893 7911 8220 5373 2488 999 6281 5936 3943 9393 1015 1410 1291 1376 3675 3872 4164 4111 4327 4662 4797 5238 EK 11218 8237 8552 5705 2802 1329 6610 6241 4271 9722 1305 1654 1615 1662 4007 4204 4494 4436 4633 4975 5129 5570 EL 11206 8224 8530 5677 2797 1313 6594 6241 4239 9706 1309 1671 1603 1668 3984 4176 4477 4424 4632 4971 5109 5550 EM 9186 6211 6349 3456 1446 1125 4542 4577 1985 7625 1509 1807 1058 1491 1842 1970 2440 2538 3051 3242 3013 3439 EN 9861 6878 7079 4199 1713 549 5219 5098 2740 8320 995 1424 706 1150 2543 2703 3097 3127 3514 3773 3701 4136 EO 8446 5509 5484 2574 1854 2131 3842 4213 1068 6847 2482 2701 2012 2390 1237 1201 1899 2162 2881 2927 2334 2717 EP 8418 5477 5468 2559 1789 2100 3808 4158 1053 6822 2444 2654 1973 2344 1186 1165 1849 2104 2818 2868 2295 2683 EQ 8431 5485 5492 2583 1735 2049 3815 4142 1079 6838 2390 2599 1919 2289 1177 1172 1839 2084 2788 2846 2298 2691 ER 8313 5359 5404 2499 1599 2038 3687 3976 1011 6727 2355 2533 1883 2229 1023 1050 1682 1914 2613 2676 2163 2565 ES 8273 5314 5380 2480 1526 2019 3642 3905 1006 6692 2325 2489 1853 2187 964 1014 1619 1841 2534 2602 2115 2522 ET 8199 5234 5337 2448 1402 1999 3561 3779 1010 6626 2282 2420 1813 2124 866 959 1510 1712 2392 2469 2031 2447 EU 8188 5221 5333 2447 1373 1991 3549 3754 1018 6617 2269 2402 1800 2107 850 954 1491 1687 2362 2443 2018 2436 EV 8103 5130 5281 2412 1259 1996 3459 3618 1036 6540 2249 2352 1786 2065 758 912 1378 1550 2212 2302 1929 2355 EW 7804 4819 5133 2387 912 2111 3174 3109 1310 6285 2252 2228 1839 1989 688 1004 1054 1069 1632 1775 1693 2134 EX 7923 4938 5256 2505 812 1989 3295 3202 1389 6406 2130 2111 1716 1868 796 1102 1176 1177 1700 1867 1816 2257 EY 7737 4762 5224 2632 711 2179 3169 2837 1765 6268 2219 2085 1875 1903 1076 1413 1163 968 1265 1517 1806 2232 EZ 7692 4719 5207 2648 747 2238 3138 2765 1828 6231 2262 2111 1931 1940 1131 1468 1168 939 1184 1451 1803 2223 FA 7682 4711 5208 2662 755 2254 3135 2744 1857 6226 2272 2113 1946 1947 1158 1494 1179 937 1159 1434 1810 2228 FB 7668 4703 5231 2724 777 2294 3143 2692 1959 6224 2291 2110 1983 1959 1256 1592 1235 958 1094 1397 1854 2264 FC 7578 4639 5272 2912 989 2508 3146 2494 2289 6178 2444 2195 2192 2093 1578 1908 1431 1063 889 1280 1994 2371 FD 7503 4568 5218 2892 1075 2594 3086 2411 2315 6109 2527 2273 2278 2176 1603 1929 1419 1034 808 1208 1965 2334 FE 7571 4640 5294 2964 1036 2548 3162 2468 2363 6181 2472 2210 2232 2118 1651 1980 1487 1108 871 1279 2039 2409 FF 7542 4624 5315 3042 1142 2639 3175 2408 2486 6170 2544 2261 2323 2187 1774 2100 1578 1180 836 1268 2107 2463 FG 7502 4606 5349 3157 1303 2776 3201 2331 2663 6156 2657 2349 2461 2298 1950 2273 1715 1298 820 1274 2212 2548 FH 7488 4641 5471 3419 1595 3013 3322 2274 3005 6193 2852 2501 2702 2491 2294 2612 2015 1581 945 1402 2465 2769 FI 8057 5073 5422 2689 626 1842 3440 3269 1569 6552 1961 1927 1560 1690 984 1290 1333 1286 1727 1936 1979 2420 FJ 8073 5091 5476 2774 513 1824 3470 3232 1694 6580 1913 1849 1531 1627 1087 1402 1382 1292 1668 1905 2033 2472 FK 8112 5130 5507 2794 504 1785 3506 3277 1694 6617 1880 1824 1493 1597 1100 1410 1414 1332 1713 1949 2064 2503 FL 8032 5056 5230 2374 1207 2027 3387 3522 1039 6475 2262 2344 1805 2064 692 876 1294 1454 2112 2203 1859 2288 FM 7891 4915 5100 2257 1228 2144 3246 3386 975 6336 2364 2423 1913 2151 556 767 1151 1318 1996 2072 1719 2150 FN 9123 6593 7682 5901 3459 4201 5590 4133 5403 8092 3817 3336 3986 3556 4696 5029 4498 4068 3376 3793 4945 5221 FO 6352 3513 4426 2795 2372 3894 2303 1150 2914 5064 3817 3530 3578 3461 2289 2521 1736 1329 569 642 1886 2036 FP 9101 6563 7647 5857 3412 4158 5553 4101 5357 8064 3776 3295 3942 3514 4650 4982 4452 4024 3333 3751 4902 5179 FQ 9061 6537 7633 5870 3460 4225 5545 4079 5388 8034 3845 3363 4006 3580 4680 5012 4473 4042 3342 3755 4914 5186 FR 9407 6923 8035 6282 3808 4477 5954 4472 5777 8410 4080 3600 4277 3837 5071 5405 4878 4450 3755 4169 5326 5600 FS 8157 5187 5319 2442 1308 1979 3515 3694 1037 6590 2245 2364 1779 2072 813 943 1443 1625 2291 2378 1984 2406 FT 9645 7200 8332 6604 4112 4731 6260 4760 6097 8678 4325 3848 4542 4096 5392 5726 5202 4773 4076 4487 5648 5920 FU 9838 7394 8523 6774 4231 4796 6447 4953 6242 8873 4383 3910 4617 4166 5539 5874 5363 4937 4250 4665 5818 6095 FV 9914 7473 8602 6849 4292 4838 6526 5032 6310 8951 4422 3951 4662 4210 5608 5943 5436 5011 4326 4743 5893 6172 FW 6931 4143 5084 3332 2153 3616 2959 1711 3204 5689 3472 3128 3303 3111 2519 2802 2087 1640 816 1164 2387 2606 FX 6760 3996 4976 3334 2339 3811 2868 1546 3295 5539 3670 3327 3497 3309 2622 2894 2153 1713 876 1158 2403 2590 FY 6504 3735 4726 3174 2473 3970 2628 1287 3244 5278 3851 3525 3654 3491 2595 2847 2078 1653 832 1013 2262 2415 FZ 8716 6112 7158 5326 2941 3807 5050 3642 4837 7628 3452 2974 3569 3162 4128 4460 3921 3492 2805 3228 4370 4651 GA 6203 3446 4471 3077 2706 4217 2402 988 3288 4985 4115 3802 3901 3756 2672 2898 2106 1710 950 990 2202 2301 GB 3369 3853 5137 6678 7945 9467 5115 4531 7804 3871 9371 9042 9151 9011 7447 7519 6785 6585 6107 5867 6412 6125 GC 3034 3685 4916 6584 7990 9516 5023 4551 7755 3597 9435 9119 9200 9077 7426 7483 6765 6585 6145 5883 6364 6060 GD 2880 3495 4720 6409 7867 9393 4850 4421 7594 3403 9320 9011 9078 8962 7275 7326 6615 6444 6020 5749 6205 5895 GE 2826 3490 4702 6418 7900 9427 4860 4451 7611 3372 9356 9048 9112 8998 7297 7346 6638 6470 6052 5778 6223 5910 GF 2530 3353 4508 6336 7938 9464 4785 4482 7565 3131 9407 9112 9150 9052 7277 7312 6621 6472 6089 5797 6184 5856 GG 2443 3246 4394 6237 7870 9396 4689 4413 7475 3018 9343 9052 9083 8988 7193 7225 6538 6395 6022 5724 6095 5763 GH 2121 3020 4109 6054 7813 9336 4520 4361 7328 2698 9299 9022 9024 8947 7074 7091 6424 6302 5970 5653 5958 5612 GI 2047 3175 4215 6226 8020 9543 4699 4570 7514 2759 9508 9232 9231 9156 7269 7281 6620 6503 6178 5858 6148 5797 GJ 1540 2833 3754 5921 7908 9421 4430 4491 7260 2247 9411 9159 9113 9065 7061 7050 6425 6342 6084 5735 5918 5546 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 10 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 GK 1430 2781 3668 5873 7903 9413 4392 4497 7223 2146 9409 9161 9106 9064 7035 7019 6402 6327 6083 5729 5887 5511 GL 1288 2654 3498 5749 7839 9344 4282 4452 7114 1964 9348 9108 9038 9005 6941 6917 6312 6249 6028 5665 5787 5404 GM 1262 2712 3541 5807 7902 9407 4343 4515 7174 1997 9411 9172 9102 9068 7002 6978 6374 6312 6091 5728 5848 5465 GN 1084 2535 3298 5626 7805 9302 4186 4450 7013 1738 9318 9089 8999 8978 6863 6827 6242 6197 6009 5634 5703 5311 GO 905 2521 3198 5599 7848 9339 4185 4521 7003 1611 9363 9144 9037 9026 6873 6828 6260 6228 6065 5682 5708 5310 GP 871 2248 2838 5299 7644 9121 3920 4373 6722 1242 9161 8956 8823 8828 6619 6561 6016 6006 5885 5488 5450 5042 GQ 842 2167 2650 5180 7603 9069 3837 4381 6620 1035 9120 8926 8774 8791 6539 6470 5947 5953 5865 5459 5368 4954 GR 1032 1961 2319 4911 7425 8875 3614 4276 6367 695 8940 8761 8583 8616 6313 6231 5735 5763 5718 5300 5142 4721 GS 957 2222 2295 5036 7679 9107 3827 4615 6516 728 9190 9029 8821 8873 6507 6405 5951 6007 6012 5583 5340 4910 GT 951 2345 2333 5112 7793 9213 3932 4753 6599 821 9301 9146 8929 8986 6604 6495 6054 6119 6137 5706 5439 5006 GU 1037 2278 2244 5027 7720 9137 3856 4697 6515 744 9227 9074 8854 8913 6524 6414 5977 6045 6071 5638 5360 4927 GV 1026 2361 2285 5087 7797 9211 3930 4785 6578 820 9304 9153 8928 8991 6593 6480 6049 6121 6153 5720 5431 4997 GW 1057 2398 2283 5099 7827 9236 3956 4828 6592 851 9332 9184 8955 9020 6614 6498 6074 6150 6189 5754 5453 5018 GX 1093 2447 2288 5119 7866 9271 3993 4884 6614 896 9370 9225 8990 9059 6644 6524 6107 6188 6236 5799 5485 5049 GY 1161 2489 2272 5120 7893 9292 4017 4935 6618 937 9395 9255 9013 9086 6658 6534 6127 6215 6274 5836 5502 5064 GZ 3788 5041 6186 7979 9316 10837 6418 5904 9149 4743 10735 10400 10521 10375 8809 8873 8147 7954 7479 7239 7758 7457 HA 3784 5118 6242 8071 9437 10958 6512 6020 9252 4781 10859 10526 10642 10499 8918 8978 8256 8067 7598 7355 7861 7556 HB 3692 5030 6150 7989 9376 10899 6431 5954 9176 4687 10803 10472 10583 10443 8846 8904 8185 7999 7536 7289 7786 7479 HC 3675 5107 6201 8084 9507 11030 6529 6080 9283 4719 10938 10609 10715 10578 8961 9016 8300 8120 7665 7413 7895 7583 HD 3478 4855 5954 7833 9278 10803 6278 5845 9036 4481 10714 10390 10487 10355 8718 8770 8058 7881 7435 7178 7648 7334 HE 3564 5039 6116 8029 9489 11013 6475 6055 9239 4624 10925 10601 10698 10566 8925 8975 8264 8089 7645 7387 7852 7535 HF 3501 5006 6072 8004 9488 11013 6453 6051 9222 4574 10928 10606 10698 10569 8912 8960 8253 8081 7643 7382 7835 7516 HG 3339 4767 5846 7760 9252 10777 6208 5812 8977 4362 10695 10376 10462 10336 8669 8716 8009 7840 7407 7142 7591 7272 HH 3594 5370 6357 8405 9975 11501 6864 6530 9654 4811 11423 11106 11186 11064 9364 9401 8706 8547 8128 7857 8273 7942 HI 3370 5430 6307 8504 10231 11758 6984 6775 9799 4718 11697 11396 11444 11341 9545 9564 8893 8758 8383 8089 8431 8082 HJ 3288 5404 6256 8484 10249 11775 6970 6792 9790 4660 11719 11421 11461 11364 9544 9559 8894 8765 8401 8102 8425 8073 HK 3177 5359 6181 8445 10255 11780 6939 6798 9763 4577 11730 11438 11467 11375 9528 9537 8880 8759 8408 8103 8403 8046 HL 3207 5412 6225 8499 10317 11843 6996 6861 9820 4619 11793 11501 11530 11439 9587 9596 8939 8820 8470 8164 8461 8103 HM 3103 5316 6122 8405 10239 11764 6903 6783 9729 4515 11717 11427 11451 11363 9500 9506 8853 8736 8393 8084 8372 8012 HN 3040 5267 6065 8357 10206 11730 6858 6751 9685 4457 11686 11398 11418 11332 9459 9464 8813 8699 8360 8049 8330 7968 HO 3057 5302 6093 8392 10248 11772 6895 6793 9722 4483 11728 11441 11460 11374 9498 9502 8852 8739 8402 8091 8368 8006 HP 3036 5293 6078 8384 10248 11773 6889 6794 9717 4467 11730 11443 11460 11376 9495 9497 8849 8738 8403 8090 8363 8000 HQ 3016 5289 6066 8381 10255 11779 6887 6801 9716 4453 11737 11452 11467 11384 9496 9498 8851 8741 8410 8096 8364 8000 HR 2987 5275 6044 8367 10252 11776 6876 6799 9705 4430 11735 11451 11464 11382 9488 9488 8844 8736 8408 8092 8354 7989 HS 2937 5254 6009 8347 10252 11775 6861 6800 9690 4392 11738 11456 11464 11385 9478 9476 8835 8731 8409 8090 8342 7975 HT 2743 5176 5869 8271 10257 11777 6803 6813 9635 4245 11750 11478 11466 11399 9443 9430 8805 8715 8419 8089 8298 7923 HU 2796 5264 5940 8358 10357 11876 6894 6914 9726 4314 11851 11579 11566 11500 9537 9523 8900 8812 8520 8188 8391 8014 HV 2646 5163 5808 8255 10295 11812 6801 6858 9632 4181 11792 11527 11502 11443 9454 9435 8820 8739 8461 8124 8304 7923 HW 2630 5162 5799 8254 10304 11820 6803 6869 9634 4172 11802 11538 11512 11453 9458 9438 8825 8746 8472 8133 8308 7926 HX 2484 5110 5687 8194 10312 11825 6763 6891 9590 4060 11816 11560 11517 11469 9432 9403 8805 8739 8487 8139 8276 7888 HY 2461 5105 5670 8187 10318 11829 6760 6899 9586 4043 11822 11568 11522 11476 9432 9401 8805 8741 8494 8144 8274 7885 HZ 2417 5086 5634 8165 10315 11825 6744 6901 9568 4007 11821 11569 11518 11475 9419 9386 8795 8734 8494 8141 8260 7869 IA 2211 4979 5452 8039 10271 11773 6646 6879 9460 3831 11781 11540 11469 11438 9333 9289 8717 8672 8461 8097 8169 7770 IB 2180 4962 5423 8019 10263 11765 6630 6876 9443 3804 11774 11536 11461 11432 9320 9274 8704 8662 8455 8090 8155 7755 IC 2154 4945 5398 8000 10252 11753 6614 6867 9425 3780 11764 11526 11449 11421 9304 9257 8690 8649 8446 8080 8139 7738 ID 2103 4918 5350 7966 10240 11738 6588 6862 9395 3735 11752 11517 11435 11410 9281 9231 8668 8632 8437 8068 8114 7712 IE 2057 4909 5305 7945 10253 11748 6581 6887 9382 3696 11767 11537 11446 11427 9277 9222 8669 8639 8456 8083 8109 7704 IF 2019 4896 5265 7923 10256 11748 6569 6899 9364 3662 11770 11544 11446 11431 9267 9209 8661 8637 8464 8087 8098 7690 IG 1996 4906 5234 7917 10287 11774 6579 6944 9366 3641 11802 11581 11474 11465 9279 9216 8678 8661 8501 8120 8110 7699 IH 1887 4829 5109 7819 10232 11714 6500 6909 9275 3529 11748 11534 11415 11413 9202 9132 8606 8599 8456 8070 8031 7617 II 676 3631 3747 6519 9093 10544 5277 5896 7997 2210 10609 10427 10253 10284 7971 7878 7400 7432 7374 6962 6801 6375 IJ 615 3520 3597 6383 8985 10430 5158 5812 7864 2076 10500 10323 10140 10177 7848 7751 7282 7321 7277 6861 6679 6251 IK 578 3466 3540 6325 8932 10375 5103 5764 7807 2019 10446 10270 10086 10123 7792 7694 7227 7267 7225 6809 6623 6195 IL 524 3420 3510 6288 8885 10330 5059 5713 7769 1981 10400 10223 10041 10077 7750 7654 7183 7221 7177 6761 6581 6153 IM 635 3407 3415 6224 8872 10307 5029 5739 7712 1928 10385 10216 10020 10065 7711 7606 7153 7203 7182 6761 6544 6113 IN 705 2988 2914 5740 8441 9861 4580 5375 7232 1468 9949 9793 9577 9634 7248 7135 6701 6767 6778 6349 6085 5651 IO 840 2741 2636 5463 8183 9597 4316 5151 6956 1205 9690 9538 9314 9376 6978 6863 6435 6507 6533 6101 5816 5381 IP 867 2722 2606 5436 8161 9574 4293 5136 6930 1184 9668 9517 9292 9355 6953 6837 6412 6485 6515 6082 5792 5357 IQ 1119 2600 2374 5228 8005 9404 4129 5043 6727 1047 9507 9367 9125 9198 6769 6644 6239 6327 6386 5947 5613 5176 IR 1363 2524 2175 5053 7883 9266 4002 4987 6556 989 9378 9249 8990 9074 6618 6484 6101 6204 6292 5848 5469 5030 IS 1397 2600 2214 5101 7947 9326 4067 5065 6605 1070 9441 9314 9051 9138 6674 6537 6161 6268 6363 5918 5528 5088 IT 1448 2532 2130 5018 7868 9245 3988 4999 6522 1011 9361 9236 8970 9059 6593 6455 6081 6189 6289 5844 5447 5007 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 11 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 IU 7421 5511 6901 6149 5029 6245 5184 3505 6298 6779 5953 5497 5965 5623 5625 5897 5143 4711 3875 4066 5292 5366 IV 7340 5434 6827 6096 5018 6246 5118 3441 6261 6699 5959 5505 5964 5628 5591 5861 5103 4673 3838 4021 5244 5312 IW 7260 5346 6740 6019 4976 6217 5034 3358 6197 6613 5935 5483 5933 5601 5529 5797 5036 4608 3774 3951 5171 5235 IX 7205 5282 6674 5957 4935 6185 4969 3292 6141 6552 5906 5455 5900 5571 5475 5742 4979 4552 3719 3892 5110 5173 IY 7144 5239 6636 5949 4966 6226 4946 3271 6151 6501 5950 5502 5940 5614 5488 5752 4986 4561 3729 3894 5108 5165 IZ 3480 4119 5382 6959 8215 9736 5396 4808 8087 4079 9635 9303 9420 9275 7728 7801 7066 6864 6379 6143 6694 6408 JA 3376 3934 5206 6773 8048 9570 5210 4634 7903 3920 9474 9145 9254 9114 7548 7619 6886 6687 6210 5969 6511 6222 JB 2840 5174 5918 8268 10192 11715 6785 6742 9616 4300 11680 11401 11403 11328 9408 9404 8766 8665 8351 8029 8270 7901 JC 2693 5080 5794 8175 10143 11663 6702 6697 9533 4173 11634 11361 11353 11283 9336 9326 8697 8604 8304 7975 8194 7820 JD 2423 5169 5662 8236 10439 11945 6834 7037 9652 4040 11947 11702 11639 11603 9518 9477 8898 8847 8624 8265 8355 7959 JE 2054 4980 5284 7982 10369 11854 6652 7032 9434 3698 11884 11665 11554 11548 9353 9287 8754 8740 8586 8203 8183 7771 JF 1572 2727 2224 5128 8024 9387 4146 5198 6633 1227 9511 9394 9116 9212 6725 6579 6225 6346 6466 6018 5587 5146 JG 1616 2681 2159 5063 7966 9327 4090 5153 6569 1194 9452 9337 9056 9154 6663 6516 6166 6288 6413 5965 5527 5085 JH 1616 2812 2278 5185 8096 9454 4220 5283 6691 1316 9581 9467 9184 9283 6789 6640 6294 6418 6544 6096 5654 5213 JI 1658 2743 2191 5098 8014 9371 4140 5215 6605 1262 9499 9386 9101 9202 6705 6555 6211 6337 6468 6019 5571 5130 JJ 2032 4989 5235 7966 10402 11881 6659 7087 9427 3667 11919 11707 11583 11584 9361 9288 8769 8765 8630 8242 8190 7774 JK 2064 5030 5254 7997 10450 11927 6699 7143 9461 3694 11967 11758 11629 11633 9401 9325 8811 8811 8682 8292 8230 7812 JL 2037 5001 5232 7970 10418 11896 6670 7109 9433 3669 11935 11725 11598 11601 9372 9297 8781 8780 8649 8259 8200 7783 JM 3449 1849 352 2923 6037 7293 2347 3862 4420 1872 7467 7412 7043 7197 4604 4415 4191 4403 4725 4265 3540 3107 WTG NSA 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 A 4953 5208 5508 4721 4376 4017 3660 2912 3145 4080 4225 3938 4201 4544 5209 2149 1999 2188 2567 1535 1695 1895 B 4911 5172 5475 4675 4328 3969 3612 2864 3101 4040 4182 3894 4165 4505 5179 2102 1956 2150 2535 1489 1654 1858 C 4834 5072 5368 4620 4291 3927 3572 2826 3038 3959 4113 3827 4068 4418 5063 2052 1886 2061 2427 1443 1580 1764 D 4588 3731 3359 5354 5878 5778 5868 6072 5548 4762 5016 5161 4302 4421 3138 6165 6025 5711 5200 6508 6190 5875 E 1905 1875 2136 2130 2242 1923 1787 1672 1194 1132 1467 1333 953 1402 1828 1688 1589 1291 823 2108 1813 1529 F 2938 2136 1885 3647 4097 3937 3977 4112 3593 2898 3195 3292 2425 2643 1465 4178 4041 3728 3217 4529 4214 3901 G 4722 3865 3491 5488 6013 5915 6005 6209 5685 4900 5153 5299 4439 4557 3274 6299 6158 5844 5332 6639 6321 6006 H 4773 3916 3541 5540 6066 5970 6061 6266 5742 4955 5207 5354 4495 4611 3327 6357 6216 5901 5390 6697 6379 6064 I 4682 3824 3451 5448 5973 5875 5965 6170 5646 4860 5113 5259 4400 4517 3233 6262 6122 5808 5297 6604 6286 5971 J 4644 3787 3413 5410 5934 5836 5926 6131 5607 4821 5074 5220 4361 4478 3195 6223 6084 5769 5258 6566 6248 5933 K 4598 3741 3371 5362 5883 5781 5868 6066 5542 4763 5020 5162 4302 4425 3143 6152 6011 5696 5185 6492 6174 5858 L 4462 3605 3235 5226 5747 5645 5733 5935 5411 4628 4884 5027 4167 4289 3007 6028 5889 5574 5063 6371 6054 5739 M 4339 3482 3116 5101 5619 5515 5600 5799 5276 4496 4754 4895 4034 4160 2879 5891 5753 5438 4927 6236 5919 5604 N 4309 3452 3087 5071 5588 5483 5568 5767 5243 4464 4722 4863 4002 4129 2848 5858 5720 5406 4895 6203 5886 5571 O 4199 3343 2985 4958 5469 5357 5437 5626 5103 4335 4598 4734 3871 4008 2730 5711 5571 5256 4745 6053 5736 5421 P 4165 3308 2939 4930 5452 5353 5444 5657 5132 4338 4591 4737 3879 3995 2712 5766 5634 5321 4811 6122 5806 5493 Q 4154 3298 2935 4916 5432 5326 5411 5612 5088 4307 4565 4706 3845 3972 2692 5709 5573 5259 4748 6059 5742 5428 R 4148 3293 2935 4906 5417 5305 5384 5573 5050 4282 4545 4681 3818 3955 2678 5659 5519 5205 4694 6002 5685 5370 S 3954 3101 2751 4709 5214 5097 5172 5356 4834 4071 4338 4470 3606 3751 2478 5441 5302 4988 4477 5786 5469 5154 T 3607 2763 2438 4349 4836 4704 4767 4931 4410 3672 3950 4070 3203 3373 2117 5005 4864 4550 4039 5347 5030 4716 U 3426 2582 2257 4170 4660 4531 4598 4775 4253 3501 3776 3900 3034 3196 1937 4866 4732 4418 3908 5221 4905 4592 V 3303 2457 2130 4050 4544 4420 4493 4683 4159 3393 3663 3792 2927 3081 1817 4790 4662 4350 3841 5155 4841 4529 W 3400 2569 2270 4130 4601 4455 4506 4651 4132 3419 3706 3815 2948 3140 1909 4712 4569 4254 3743 5051 4733 4419 X 3119 2284 1981 3855 4335 4200 4262 4437 3914 3168 3446 3565 2699 2872 1628 4534 4405 4093 3584 4898 4583 4272 Y 3152 2315 2007 3890 4373 4239 4304 4481 3958 3208 3485 3606 2740 2909 1661 4580 4451 4138 3629 4944 4629 4318 Z 3242 2421 2139 3964 4426 4274 4319 4457 3938 3236 3528 3631 2764 2968 1755 4515 4373 4058 3547 4856 4539 4224 AA 3120 2284 1981 3856 4336 4201 4263 4438 3915 3169 3447 3566 2700 2873 1629 4535 4406 4094 3585 4899 4585 4273 AB 2720 1922 1682 3428 3880 3723 3768 3919 3398 2685 2979 3080 2213 2425 1251 4010 3883 3571 3063 4378 4064 3754 AC 2381 1605 1408 3078 3523 3365 3412 3577 3054 2327 2622 2722 1855 2071 940 3697 3583 3275 2772 4088 3778 3473 AD 2467 1718 1548 3144 3568 3393 3423 3552 3032 2353 2661 2744 1880 2130 1064 3635 3510 3199 2692 4007 3695 3386 AE 2574 1845 1689 3237 3644 3457 3472 3570 3055 2418 2735 2804 1946 2220 1199 3621 3483 3170 2660 3973 3658 3347 AF 2362 1640 1503 3025 3437 3256 3279 3401 2882 2216 2529 2605 1743 2008 1005 3484 3361 3050 2544 3860 3548 3240 AG 2312 1605 1485 2967 3373 3188 3208 3327 2808 2149 2464 2536 1676 1950 982 3411 3288 2977 2472 3788 3477 3169 AH 2463 1763 1641 3109 3503 3309 3317 3407 2892 2271 2593 2654 1801 2091 1139 3457 3322 3009 2499 3813 3499 3188 AI 2297 1603 1496 2944 3344 3155 3171 3282 2764 2116 2434 2502 1644 1927 990 3362 3238 2927 2421 3738 3426 3118 AJ 2330 1636 1528 2975 3373 3182 3196 3301 2784 2144 2463 2529 1672 1958 1023 3373 3247 2936 2429 3745 3433 3124 AK 2314 1641 1551 2948 3336 3138 3145 3239 2724 2102 2425 2484 1632 1931 1044 3303 3175 2863 2356 3672 3359 3050 AL 2252 1590 1515 2881 3266 3068 3074 3172 2655 2031 2356 2413 1562 1864 1007 3242 3117 2806 2300 3616 3305 2997 AM 2134 1494 1446 2755 3136 2937 2945 3050 2532 1901 2226 2282 1431 1738 941 3136 3018 2709 2206 3522 3212 2907 AN 2209 1601 1570 2807 3168 2955 2946 3018 2505 1925 2258 2298 1462 1795 1067 3072 2943 2632 2125 3441 3129 2821 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 12 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 AO 2067 1469 1457 2667 3033 2826 2826 2920 2403 1793 2123 2170 1327 1654 961 3005 2888 2580 2078 3394 3085 2781 AP 2170 1621 1636 2732 3066 2838 2814 2859 2350 1819 2161 2182 1367 1731 1145 2896 2765 2453 1946 3262 2950 2642 AQ 2024 1463 1482 2604 2956 2741 2733 2817 2302 1712 2047 2085 1251 1596 996 2898 2782 2474 1973 3288 2980 2677 AR 1991 1437 1463 2569 2921 2706 2700 2788 2271 1677 2012 2050 1216 1562 981 2875 2762 2455 1955 3269 2962 2660 AS 1990 1453 1489 2557 2902 2683 2672 2752 2236 1657 1994 2027 1199 1554 1012 2833 2719 2412 1912 3227 2919 2617 AT 2321 1575 1416 3000 3428 3258 3293 3440 2919 2218 2522 2611 1745 1986 926 3548 3432 3123 2619 3935 3625 3319 AU 1870 1615 1800 2269 2500 2227 2155 2144 1642 1277 1634 1585 917 1369 1421 2192 2083 1779 1287 2595 2292 1996 AV 1810 1604 1812 2182 2400 2123 2046 2037 1533 1184 1541 1483 846 1304 1456 2103 2003 1702 1219 2519 2220 1929 AW 1947 1775 1986 2276 2455 2159 2054 1982 1495 1271 1624 1537 977 1439 1626 1988 1870 1564 1070 2380 2076 1780 AX 1647 1526 1775 1984 2192 1916 1846 1872 1358 982 1338 1275 676 1138 1468 1998 1926 1637 1183 2451 2162 1886 AY 1919 1760 1977 2242 2419 2124 2020 1952 1463 1237 1590 1501 948 1410 1624 1968 1855 1551 1060 2367 2065 1770 AZ 1626 1680 1980 1829 1956 1650 1544 1533 1021 832 1167 1041 701 1130 1733 1689 1644 1374 972 2175 1900 1644 BA 1844 1944 2245 1966 2017 1682 1520 1384 907 1004 1308 1131 953 1361 1990 1450 1387 1111 711 1916 1638 1379 BB 1927 2040 2341 2024 2050 1706 1525 1342 884 1078 1370 1179 1047 1449 2083 1367 1295 1016 617 1824 1543 1283 BC 1891 2032 2342 1968 1984 1638 1456 1281 817 1033 1317 1119 1030 1419 2097 1336 1279 1009 638 1809 1535 1284 BD 2063 2317 2651 2002 1904 1533 1285 960 578 1183 1394 1141 1303 1633 2439 977 955 725 539 1484 1233 1024 BE 2161 2468 2811 2034 1878 1499 1219 801 505 1286 1458 1187 1455 1755 2615 798 809 623 591 1332 1102 928 BF 2172 2493 2840 2027 1857 1477 1191 755 480 1299 1460 1186 1482 1773 2650 764 790 622 626 1309 1087 927 BG 2255 2600 2952 2074 1870 1488 1183 677 495 1389 1529 1248 1592 1869 2767 649 702 575 677 1210 1004 873 BH 2270 2629 2983 2072 1854 1472 1160 633 485 1408 1538 1254 1623 1891 2805 617 689 586 719 1189 994 878 BI 2297 2668 3024 2085 1853 1471 1153 599 494 1440 1561 1274 1664 1925 2850 578 667 586 753 1158 974 872 BJ 2913 3421 3800 2500 2074 1740 1384 665 1113 2137 2144 1855 2451 2630 3673 510 809 1048 1485 879 966 1139 BK 4457 4728 5036 4224 3886 3524 3168 2421 2647 3586 3728 3440 3718 4053 4752 1652 1502 1701 2102 1040 1200 1414 BL 4613 4931 5253 4328 3951 3601 3243 2495 2778 3752 3867 3576 3918 4230 4989 1766 1667 1904 2341 1158 1382 1636 BM 4507 4819 5140 4232 3863 3510 3152 2404 2675 3645 3764 3473 3805 4121 4874 1665 1558 1790 2225 1054 1270 1521 BN 4416 4754 5083 4118 3736 3387 3029 2282 2576 3561 3667 3375 3740 4042 4831 1564 1484 1735 2192 963 1209 1482 BO 4082 4392 4715 3821 3471 3112 2755 2007 2255 3218 3342 3052 3379 3693 4456 1249 1130 1365 1813 635 843 1104 BP 4287 4657 4996 3961 3560 3219 2861 2117 2441 3442 3530 3237 3644 3928 4763 1432 1392 1666 2145 861 1142 1438 BQ 4203 4574 4913 3880 3483 3140 2782 2037 2358 3358 3447 3154 3561 3844 4682 1349 1309 1585 2067 778 1062 1360 BR 4042 4436 4783 3700 3293 2954 2596 1855 2195 3206 3282 2989 3426 3695 4567 1195 1191 1484 1981 667 975 1287 BS 3924 4281 4618 3624 3249 2897 2539 1791 2082 3073 3173 2880 3267 3557 4385 1070 1013 1288 1772 483 766 1068 BT 3986 4388 4737 3638 3228 2890 2532 1793 2140 3153 3225 2932 3379 3643 4526 1144 1153 1451 1952 636 950 1265 BU 3702 4116 4470 3352 2947 2606 2248 1507 1856 2873 2940 2647 3110 3364 4271 870 916 1226 1736 446 764 1081 BV 3655 4092 4452 3284 2865 2530 2173 1439 1814 2837 2890 2597 3091 3330 4266 854 942 1257 1769 520 827 1139 BW 2869 3384 3765 2449 2020 1687 1331 618 1077 2098 2099 1811 2418 2591 3644 535 838 1066 1491 930 1007 1170 BX 2792 3343 3731 2337 1885 1565 1214 548 1051 2052 2025 1743 2398 2541 3633 684 991 1198 1594 1102 1176 1324 BY 2740 3324 3718 2250 1774 1469 1128 539 1064 2033 1978 1703 2401 2515 3641 835 1143 1335 1707 1262 1335 1475 BZ 1918 2676 3087 1252 678 526 457 969 1125 1519 1278 1121 1988 1887 3160 1755 2021 2064 2202 2319 2294 2314 CA 2060 2828 3239 1374 780 677 609 1037 1249 1678 1435 1280 2147 2043 3318 1806 2083 2148 2313 2349 2346 2385 CB 1855 2634 3044 1163 571 488 515 1093 1213 1516 1252 1122 1989 1857 3138 1882 2144 2179 2298 2449 2420 2433 CC 1700 2554 2944 929 518 863 1144 1838 1848 1750 1402 1435 2197 1910 3158 2631 2880 2882 2928 3210 3165 3153 CD 1636 2489 2881 863 441 791 1081 1784 1780 1673 1325 1358 2121 1837 3089 2578 2823 2819 2858 3160 3109 3092 CE 1636 2491 2881 865 470 827 1120 1824 1817 1694 1345 1385 2139 1848 3095 2618 2863 2858 2894 3201 3150 3132 CF 2005 2848 3247 1233 688 912 1090 1686 1803 1916 1592 1557 2383 2151 3425 2468 2738 2780 2892 3017 3007 3031 CG 1909 2765 3153 1139 702 1016 1261 1913 1974 1947 1603 1619 2399 2119 3369 2703 2964 2986 3062 3265 3241 3248 CH 1896 2753 3137 1133 746 1081 1341 2006 2052 1980 1631 1665 2425 2129 3367 2797 3055 3072 3137 3363 3334 3336 CI 2043 2823 3131 1511 1540 1922 2252 2976 2916 2518 2170 2327 2870 2460 3492 3769 4005 3978 3958 4356 4297 4261 CJ 1820 2593 2900 1326 1427 1805 2147 2885 2788 2330 1988 2162 2667 2248 3263 3673 3898 3855 3810 4269 4194 4143 CK 2159 2891 3169 1715 1815 2195 2534 3266 3182 2716 2377 2557 3038 2609 3562 4057 4286 4248 4207 4649 4581 4535 CL 2178 2897 3168 1757 1875 2254 2595 3329 3238 2754 2419 2604 3068 2635 3567 4119 4347 4305 4257 4713 4642 4593 CM 2297 2982 3234 1922 2068 2445 2788 3525 3424 2911 2581 2776 3208 2767 3650 4314 4539 4493 4435 4909 4835 4782 CN 2410 3075 3314 2058 2214 2590 2934 3671 3568 3042 2716 2914 3331 2887 3740 4460 4684 4637 4575 5055 4981 4927 CO 2403 3060 3296 2062 2227 2603 2948 3686 3579 3043 2718 2919 3327 2881 3724 4474 4697 4647 4582 5070 4994 4938 CP 2443 3101 3337 2097 2256 2632 2976 3713 3610 3080 2754 2954 3366 2921 3765 4502 4726 4678 4616 5097 5023 4968 CQ 2393 3038 3268 2072 2253 2627 2974 3715 3599 3047 2726 2932 3324 2876 3701 4501 4721 4668 4596 5099 5019 4960 CR 2364 3012 3243 2042 2225 2599 2947 3687 3570 3017 2696 2902 3295 2847 3675 4474 4693 4639 4566 5072 4991 4931 CS 2407 3057 3289 2076 2250 2625 2971 3710 3599 3054 2731 2935 3335 2888 3720 4498 4719 4667 4599 5095 5017 4959 CT 2463 3116 3348 2125 2287 2664 3008 3746 3640 3105 2781 2982 3389 2943 3779 4534 4758 4709 4644 5130 5054 4999 CU 2417 3055 3281 2104 2291 2664 3012 3752 3635 3077 2757 2965 3351 2902 3716 4539 4758 4703 4629 5137 5056 4996 CV 2489 3120 3342 2181 2365 2739 3086 3826 3711 3153 2833 3041 3425 2975 3780 4613 4833 4780 4706 5211 5131 5071 CW 2412 3026 3240 2135 2349 2719 3069 3813 3681 3096 2782 2997 3356 2903 3683 4596 4811 4750 4664 5197 5111 5044 CX 2429 3038 3249 2158 2374 2744 3095 3838 3706 3117 2804 3020 3375 2921 3695 4622 4836 4774 4687 5223 5136 5068 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 13 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 CY 2475 3085 3297 2198 2406 2777 3127 3870 3741 3159 2845 3060 3419 2966 3742 4654 4870 4810 4726 5254 5169 5104 CZ 2471 3054 3252 2232 2468 2836 3188 3933 3790 3179 2872 3095 3424 2968 3706 4714 4925 4858 4762 5317 5225 5153 DA 2576 3142 3330 2350 2590 2957 3309 4055 3911 3293 2988 3213 3532 3075 3789 4835 5046 4978 4880 5438 5347 5274 DB 2589 3147 3331 2373 2618 2984 3337 4083 3936 3312 3009 3235 3547 3089 3792 4863 5073 5003 4902 5467 5374 5299 DC 2606 3143 3316 2418 2680 3044 3398 4145 3988 3344 3047 3279 3569 3110 3782 4922 5128 5054 4944 5527 5430 5351 DD 2655 3187 3356 2468 2729 3093 3447 4194 4038 3394 3097 3329 3618 3158 3824 4972 5178 5104 4995 5576 5480 5401 DE 2659 3169 3329 2498 2777 3137 3492 4240 4075 3412 3121 3357 3625 3164 3801 5015 5218 5139 5021 5622 5520 5437 DF 2759 3249 3396 2616 2902 3261 3617 4364 4195 3523 3235 3474 3728 3266 3874 5139 5340 5259 5137 5746 5643 5558 DG 2797 3266 3402 2677 2975 3332 3688 4436 4260 3572 3289 3532 3767 3305 3885 5208 5407 5322 5193 5816 5710 5621 DH 2810 3268 3400 2700 3004 3360 3716 4465 4285 3590 3309 3554 3780 3318 3884 5235 5432 5346 5213 5844 5736 5645 DI 2848 3256 3363 2793 3129 3477 3834 4583 4383 3652 3385 3638 3819 3357 3855 5346 5535 5438 5288 5957 5840 5740 DJ 2935 3337 3440 2879 3212 3561 3918 4667 4469 3740 3472 3725 3905 3444 3934 5431 5621 5525 5375 6042 5926 5826 DK 2905 3296 3394 2864 3206 3552 3910 4658 4454 3715 3451 3706 3875 3413 3889 5420 5608 5508 5354 6031 5913 5810 DL 2939 3314 3404 2913 3263 3607 3965 4713 4504 3755 3495 3752 3908 3447 3901 5473 5658 5556 5396 6085 5963 5858 DM 3070 3468 3567 3010 3336 3687 4044 4793 4599 3874 3605 3857 4040 3579 4061 5559 5751 5656 5509 6169 6055 5957 DN 2976 3343 3429 2956 3308 3652 4010 4758 4547 3795 3536 3794 3944 3484 3927 5517 5702 5598 5437 6129 6007 5901 DO 3005 3351 3426 3006 3369 3709 4068 4815 4597 3832 3579 3839 3971 3512 3926 5571 5752 5645 5477 6183 6058 5948 DP 3080 3436 3514 3066 3418 3761 4119 4868 4657 3902 3645 3903 4048 3588 4014 5627 5811 5708 5545 6239 6116 6010 DQ 3316 3567 3592 3393 3790 4119 4477 5221 4979 4168 3936 4206 4268 3815 4099 5965 6135 6014 5820 6579 6442 6318 DR 3449 3731 3767 3488 3861 4199 4558 5305 5078 4290 4048 4314 4407 3951 4273 6057 6234 6121 5941 6670 6540 6425 DS 3330 3571 3590 3416 3818 4145 4503 5247 5001 4184 3955 4227 4280 3828 4098 5989 6157 6034 5837 6603 6463 6338 DT 3497 3748 3768 3566 3954 4287 4645 5390 5153 4348 4114 4383 4450 3997 4275 6137 6310 6191 6000 6751 6616 6495 DU 3634 3858 3864 3720 4116 4446 4804 5549 5306 4489 4261 4532 4581 4130 4372 6293 6462 6340 6142 6907 6768 6644 DV 3775 3971 3962 3883 4287 4614 4972 5715 5465 4636 4414 4688 4716 4269 4469 6455 6621 6495 6290 7070 6928 6799 DW 3586 3719 3684 3759 4201 4512 4867 5603 5325 4458 4257 4538 4508 4069 4190 6326 6478 6337 6109 6940 6784 6642 DX 3862 4027 4002 3995 4411 4734 5091 5832 5573 4729 4515 4791 4795 4351 4508 6567 6728 6596 6382 7181 7035 6901 DY 4039 4189 4155 4177 4594 4917 5274 6015 5754 4906 4695 4972 4968 4525 4660 6749 6909 6776 6559 7363 7216 7081 DZ 4319 4444 4394 4471 4890 5212 5569 6309 6045 5189 4982 5261 5241 4802 4898 7041 7200 7064 6841 7656 7506 7369 EA 4083 4226 4187 4227 4646 4968 5324 6065 5802 4952 4742 5020 5010 4569 4693 6798 6958 6823 6604 7413 7264 7128 EB 4375 4494 4439 4532 4953 5274 5631 6371 6105 5246 5041 5320 5295 4857 4942 7102 7259 7122 6897 7716 7566 7427 EC 4736 4800 4716 4930 5368 5682 6037 6774 6493 5612 5421 5704 5638 5208 5213 7496 7645 7499 7258 8110 7951 7804 ED 4777 4849 4768 4964 5397 5713 6069 6806 6529 5653 5459 5741 5682 5251 5266 7530 7682 7538 7300 8145 7988 7843 EE 4790 4846 4757 4990 5430 5743 6098 6834 6551 5667 5477 5760 5689 5260 5253 7554 7702 7555 7311 8168 8008 7860 EF 4827 4890 4805 5019 5454 5769 6125 6862 6582 5703 5511 5793 5729 5299 5301 7585 7735 7589 7349 8198 8041 7894 EG 4913 4971 4882 5109 5545 5860 6215 6952 6672 5790 5599 5882 5813 5385 5377 7674 7823 7677 7435 8288 8129 7982 EH 4945 4999 4908 5143 5580 5895 6250 6986 6705 5822 5632 5915 5844 5416 5403 7708 7857 7710 7467 8322 8163 8015 EI 4969 5014 4919 5173 5614 5927 6282 7017 6733 5846 5659 5942 5864 5438 5413 7737 7884 7735 7490 8350 8190 8040 EJ 5149 5176 5070 5365 5811 6121 6476 7210 6921 6027 5844 6129 6037 5614 5560 7926 8071 7919 7668 8539 8376 8224 EK 5478 5494 5380 5698 6142 6454 6808 7542 7253 6357 6176 6461 6363 5941 5867 8258 8402 8250 7996 8872 8708 8555 EL 5462 5487 5377 5674 6114 6427 6782 7518 7232 6340 6156 6440 6350 5927 5866 8236 8382 8231 7981 8850 8688 8536 EM 3419 3667 3688 3494 3887 4218 4576 5321 5080 4271 4038 4309 4371 3918 4195 6066 6237 6116 5923 6680 6543 6421 EN 4087 4242 4209 4220 4633 4957 5314 6056 5798 4954 4741 5017 5018 4575 4715 6792 6954 6822 6607 7406 7260 7127 EO 2779 3233 3364 2676 2986 3340 3697 4446 4262 3562 3283 3529 3750 3288 3848 5215 5411 5322 5187 5824 5715 5622 EP 2738 3180 3306 2652 2974 3325 3683 4431 4240 3528 3253 3502 3709 3247 3792 5198 5391 5298 5157 5808 5695 5599 EQ 2739 3167 3286 2669 3001 3349 3707 4456 4259 3536 3265 3516 3710 3248 3774 5220 5410 5315 5169 5830 5715 5616 ER 2599 3005 3117 2566 2924 3264 3623 4370 4156 3409 3147 3404 3569 3108 3607 5127 5311 5208 5049 5739 5616 5510 ES 2547 2937 3044 2535 2908 3244 3602 4349 4126 3365 3108 3368 3516 3055 3535 5102 5282 5174 5008 5715 5587 5477 ET 2455 2816 2913 2484 2881 3208 3566 4310 4072 3286 3040 3305 3421 2962 3407 5055 5228 5113 4934 5669 5534 5416 EU 2440 2793 2887 2478 2882 3206 3563 4307 4065 3274 3030 3297 3405 2946 3382 5050 5222 5104 4923 5664 5528 5408 EV 2342 2664 2747 2422 2850 3164 3520 4260 4002 3187 2954 3226 3302 2845 3244 4994 5158 5033 4839 5608 5465 5338 EW 2040 2197 2223 2308 2825 3089 3432 4144 3823 2917 2739 3027 2953 2516 2728 4833 4966 4809 4562 5444 5271 5114 EX 2162 2301 2313 2430 2943 3209 3553 4267 3946 3039 2862 3150 3071 2635 2820 4956 5089 4932 4683 5568 5394 5236 EY 2065 2013 1949 2489 3054 3273 3598 4275 3905 2936 2816 3109 2889 2487 2454 4917 5020 4836 4541 5519 5321 5137 EZ 2043 1957 1878 2493 3066 3276 3596 4266 3888 2910 2800 3093 2849 2455 2382 4898 4997 4807 4505 5498 5296 5108 FA 2044 1944 1859 2503 3078 3285 3604 4271 3889 2908 2803 3096 2842 2451 2362 4899 4996 4805 4500 5498 5295 5105 FB 2067 1919 1812 2554 3136 3332 3646 4304 3913 2923 2830 3123 2838 2458 2311 4921 5011 4814 4500 5517 5309 5114 FC 2132 1828 1646 2705 3304 3466 3761 4384 3963 2948 2901 3189 2804 2465 2122 4959 5027 4812 4466 5543 5318 5106 FD 2087 1757 1566 2676 3278 3431 3722 4338 3912 2893 2854 3141 2740 2407 2040 4904 4968 4751 4400 5486 5259 5043 FE 2163 1829 1631 2750 3352 3507 3798 4414 3988 2970 2931 3218 2814 2483 2099 4981 5044 4826 4473 5562 5334 5118 FF 2205 1818 1592 2817 3421 3564 3849 4451 4015 2992 2969 3253 2815 2502 2046 5001 5057 4832 4469 5577 5344 5122 FG 2274 1817 1554 2918 3526 3651 3925 4508 4059 3032 3031 3311 2827 2538 1981 5035 5078 4845 4467 5602 5361 5131 FH 2475 1913 1591 3159 3769 3868 4124 4672 4205 3177 3212 3482 2925 2683 1954 5158 5182 4934 4532 5710 5457 5212 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 14 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 FI 2309 2396 2378 2606 3126 3388 3729 4439 4110 3189 3023 3312 3201 2773 2886 5121 5249 5086 4827 5731 5553 5390 FJ 2345 2383 2342 2676 3208 3461 3799 4501 4160 3224 3071 3362 3217 2797 2849 5173 5294 5124 4853 5781 5597 5428 FK 2380 2426 2387 2702 3230 3486 3825 4530 4192 3259 3103 3394 3256 2834 2893 5204 5327 5159 4891 5813 5631 5462 FL 2266 2571 2649 2371 2814 3121 3476 4212 3945 3117 2891 3165 3222 2767 3147 4941 5101 4971 4770 5555 5407 5276 FM 2123 2431 2516 2242 2697 2998 3352 4086 3812 2976 2753 3029 3079 2624 3012 4810 4967 4834 4630 5424 5273 5139 FN 4910 4212 3817 5629 6237 6305 6531 7003 6502 5502 5603 5851 5160 5026 3966 7377 7341 7058 6593 7870 7584 7302 FO 1704 923 523 2472 3056 3062 3258 3710 3212 2209 2330 2564 1879 1738 817 4116 4111 3849 3425 4642 4375 4117 FP 4868 4173 3778 5586 6194 6263 6491 6965 6464 5463 5563 5811 5124 4987 3932 7341 7307 7025 6561 7836 7551 7270 FQ 4873 4170 3773 5595 6203 6267 6491 6959 6457 5459 5563 5809 5114 4984 3917 7328 7291 7007 6540 7819 7532 7250 FR 5287 4582 4184 6009 6616 6681 6905 7370 6866 5871 5977 6222 5522 5397 4319 7732 7690 7405 6934 8218 7929 7644 FS 2401 2737 2823 2462 2878 3197 3554 4296 4046 3242 3004 3273 3364 2906 3320 5034 5202 5081 4893 5648 5508 5385 FT 5606 4894 4495 6330 6937 6999 7220 7678 7172 6181 6292 6535 5828 5710 4618 8030 7984 7695 7221 8510 8219 7932 FU 5783 5078 4679 6502 7111 7177 7401 7864 7359 6366 6473 6718 6015 5893 4808 8220 8175 7888 7414 8702 8411 8124 FV 5860 5156 4758 6578 7187 7255 7479 7943 7438 6444 6551 6796 6094 5971 4887 8300 8255 7967 7493 8781 8490 8204 FW 2283 1564 1178 3031 3630 3669 3884 4360 3866 2856 2956 3201 2537 2377 1431 4774 4767 4502 4071 5298 5029 4768 FX 2262 1498 1095 3022 3614 3632 3832 4280 3779 2782 2904 3139 2439 2313 1290 4668 4651 4380 3939 5181 4907 4640 FY 2082 1284 874 2851 3433 3432 3619 4047 3541 2554 2693 2919 2197 2095 1030 4419 4397 4124 3681 4928 4651 4382 FZ 4342 3661 3271 5056 5665 5738 5970 6456 5960 4953 5043 5295 4624 4472 3450 6851 6826 6549 6093 7356 7075 6800 GA 1967 1127 723 2741 3304 3273 3437 3827 3314 2351 2520 2729 1967 1914 757 4167 4134 3855 3403 4663 4382 4108 GB 5960 5465 5422 6379 6524 6192 6002 5612 5309 5374 5727 5617 5033 5475 4914 5088 4789 4569 4263 4945 4699 4464 GC 5912 5459 5442 6294 6409 6068 5862 5439 5160 5288 5637 5512 4969 5418 4935 4884 4581 4375 4097 4709 4475 4252 GD 5753 5316 5309 6123 6230 5886 5677 5248 4973 5117 5464 5335 4805 5256 4804 4689 4386 4181 3907 4513 4278 4057 GE 5771 5342 5339 6134 6235 5890 5677 5241 4972 5128 5475 5342 4821 5273 4834 4675 4371 4170 3903 4491 4260 4042 GF 5732 5344 5364 6061 6134 5782 5556 5090 4845 5058 5400 5253 4772 5230 4862 4496 4191 4004 3765 4284 4064 3859 GG 5644 5266 5293 5965 6032 5678 5450 4980 4739 4962 5303 5153 4682 5140 4793 4384 4078 3892 3657 4170 3950 3746 GH 5509 5177 5230 5793 5831 5471 5230 4733 4516 4796 5130 4967 4541 5002 4736 4113 3806 3634 3428 3874 3664 3473 GI 5700 5380 5437 5970 5995 5633 5385 4871 4670 4977 5308 5139 4730 5192 4944 4232 3924 3765 3580 3968 3771 3592 GJ 5477 5233 5330 5685 5663 5293 5025 4470 4311 4711 5027 4837 4507 4968 4853 3795 3488 3355 3225 3489 3312 3158 GK 5448 5222 5328 5642 5609 5236 4964 4399 4251 4673 4986 4791 4479 4940 4855 3715 3409 3284 3168 3398 3227 3080 GL 5352 5151 5271 5524 5476 5102 4824 4246 4112 4564 4871 4670 4385 4844 4805 3553 3247 3131 3034 3224 3059 2920 GM 5413 5214 5334 5583 5532 5158 4878 4297 4167 4624 4930 4728 4447 4906 4868 3600 3295 3182 3091 3264 3103 2969 GN 5273 5112 5250 5413 5340 4963 4676 4078 3968 4467 4765 4554 4312 4768 4794 3367 3064 2965 2902 3014 2863 2741 GO 5284 5154 5306 5396 5302 4923 4627 4011 3925 4465 4754 4535 4330 4781 4859 3284 2984 2903 2873 2904 2769 2666 GP 5033 4952 5127 5108 4989 4609 4305 3673 3610 4198 4475 4246 4091 4536 4697 2934 2637 2572 2579 2539 2413 2325 GQ 4960 4918 5110 5001 4858 4477 4165 3515 3479 4112 4377 4139 4031 4468 4693 2762 2470 2427 2474 2342 2233 2167 GR 4745 4754 4968 4746 4576 4195 3875 3208 3201 3884 4135 3887 3835 4262 4572 2443 2158 2138 2233 2004 1910 1866 GS 4961 5033 5271 4898 4677 4297 3962 3259 3322 4088 4312 4050 4084 4493 4895 2470 2212 2255 2438 1955 1931 1959 GT 5065 5156 5399 4983 4746 4368 4029 3316 3401 4189 4406 4141 4198 4602 5029 2524 2276 2337 2546 1987 1988 2038 GU 4988 5087 5334 4901 4660 4282 3943 3228 3317 4112 4326 4059 4126 4528 4968 2436 2190 2255 2471 1898 1900 1955 GV 5062 5169 5418 4965 4717 4339 3998 3279 3379 4185 4395 4126 4205 4604 5055 2486 2246 2320 2547 1937 1953 2018 GW 5087 5204 5456 4981 4726 4349 4006 3284 3393 4209 4415 4145 4236 4632 5096 2490 2255 2338 2576 1934 1959 2035 GX 5122 5249 5505 5006 4742 4366 4022 3296 3416 4243 4445 4173 4277 4669 5148 2502 2273 2365 2615 1937 1975 2061 GY 5144 5285 5546 5013 4739 4365 4018 3288 3423 4265 4460 4185 4308 4696 5195 2495 2274 2378 2645 1920 1973 2074 GZ 7306 6832 6794 7691 7797 7452 7237 6783 6529 6684 7033 6904 6365 6813 6287 6185 5879 5696 5454 5949 5742 5546 HA 7409 6944 6911 7786 7884 7537 7317 6854 6608 6779 7127 6994 6465 6915 6403 6247 5940 5763 5529 5999 5797 5607 HB 7334 6875 6845 7705 7801 7452 7231 6765 6521 6699 7046 6912 6388 6839 6338 6155 5848 5673 5442 5906 5705 5516 HC 7442 6994 6971 7804 7889 7538 7312 6835 6601 6798 7144 7004 6494 6946 6463 6214 5907 5738 5518 5951 5756 5574 HD 7196 6754 6736 7553 7637 7286 7059 6583 6348 6548 6893 6752 6245 6698 6229 5965 5658 5487 5266 5707 5510 5325 HE 7399 6963 6946 7751 7828 7476 7246 6760 6533 6746 7090 6947 6447 6901 6439 6133 5826 5661 5449 5863 5672 5493 HF 7383 6954 6941 7729 7801 7447 7214 6724 6502 6724 7067 6922 6429 6884 6434 6092 5785 5622 5416 5817 5628 5453 HG 7139 6712 6702 7484 7558 7205 6974 6488 6261 6480 6823 6678 6185 6639 6195 5862 5555 5388 5177 5595 5402 5222 HH 7821 7418 7418 8139 8186 7825 7580 7060 6865 7138 7477 7320 6861 7318 6913 6399 6092 5949 5776 6085 5916 5761 HI 7982 7630 7658 8253 8260 7892 7629 7070 6914 7262 7591 7417 7014 7475 7156 6376 6071 5954 5826 6016 5873 5745 HJ 7977 7638 7672 8237 8235 7865 7598 7031 6884 7250 7576 7398 7008 7470 7172 6331 6027 5916 5798 5962 5824 5702 HK 7956 7633 7675 8202 8189 7818 7546 6970 6833 7219 7542 7359 6986 7448 7177 6261 5959 5855 5749 5882 5751 5636 HL 8015 7694 7737 8258 8242 7870 7598 7019 6885 7276 7598 7414 7045 7507 7239 6308 6006 5904 5802 5925 5796 5683 HM 7926 7611 7658 8165 8145 7773 7500 6919 6787 7183 7505 7320 6955 7417 7161 6206 5904 5804 5705 5822 5694 5582 HN 7884 7574 7624 8118 8096 7723 7448 6865 6736 7138 7459 7273 6913 7375 7128 6150 5849 5750 5655 5763 5637 5527 HO 7923 7615 7666 8155 8130 7757 7482 6896 6770 7176 7496 7308 6952 7414 7170 6180 5879 5782 5689 5790 5666 5558 HP 7918 7614 7666 8148 8121 7748 7471 6884 6759 7169 7489 7301 6947 7409 7171 6166 5865 5770 5679 5774 5651 5545 HQ 7919 7618 7672 8145 8116 7743 7465 6875 6753 7168 7487 7298 6948 7410 7177 6156 5856 5762 5674 5762 5640 5535 HR 7910 7613 7669 8133 8101 7727 7448 6857 6737 7157 7475 7284 6939 7401 7175 6136 5836 5744 5659 5739 5619 5516 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 15 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 HS 7899 7609 7669 8115 8078 7704 7423 6827 6713 7142 7458 7266 6928 7390 7176 6103 5804 5715 5636 5702 5585 5485 HT 7858 7598 7673 8048 7991 7614 7325 6713 6619 7084 7395 7194 6888 7349 7185 5976 5680 5605 5551 5555 5452 5366 HU 7952 7696 7773 8137 8075 7698 7407 6791 6702 7175 7484 7282 6982 7443 7285 6051 5756 5685 5636 5624 5525 5444 HV 7867 7627 7712 8039 7966 7588 7294 6670 6591 7082 7388 7181 6898 7358 7227 5925 5632 5568 5530 5489 5397 5322 HW 7871 7635 7722 8039 7964 7585 7290 6664 6588 7084 7389 7181 6902 7362 7238 5918 5625 5563 5529 5479 5389 5316 HX 7843 7634 7734 7988 7894 7514 7213 6573 6516 7044 7342 7127 6878 7336 7255 5817 5528 5479 5468 5362 5284 5225 HY 7842 7638 7741 7982 7885 7505 7203 6560 6506 7041 7337 7122 6877 7335 7263 5802 5514 5468 5461 5344 5269 5212 HZ 7829 7633 7739 7963 7860 7480 7176 6529 6481 7025 7319 7101 6866 7323 7264 5769 5483 5440 5439 5306 5235 5182 IA 7744 7581 7704 7848 7723 7342 7031 6370 6344 6925 7211 6985 6786 7240 7235 5600 5319 5293 5319 5118 5063 5026 IB 7730 7573 7698 7830 7702 7320 7008 6344 6323 6910 7194 6967 6774 7227 7231 5573 5294 5269 5300 5089 5036 5002 IC 7715 7561 7688 7811 7681 7299 6986 6321 6302 6893 7176 6949 6759 7212 7222 5549 5270 5248 5282 5063 5011 4980 ID 7692 7548 7678 7780 7644 7262 6947 6279 6266 6867 7147 6918 6738 7190 7215 5505 5227 5209 5251 5013 4966 4939 IE 7690 7560 7698 7765 7619 7237 6919 6244 6242 6859 7136 6903 6739 7189 7238 5466 5192 5182 5236 4966 4927 4908 IF 7681 7562 7704 7746 7593 7211 6891 6211 6217 6846 7119 6884 6733 7182 7247 5431 5159 5155 5218 4924 4891 4878 IG 7695 7592 7742 7746 7582 7200 6877 6190 6208 6855 7124 6885 6752 7198 7289 5407 5139 5143 5221 4891 4867 4863 IH 7621 7538 7697 7655 7478 7096 6769 6076 6107 6775 7038 6795 6684 7127 7250 5289 5026 5040 5134 4764 4750 4757 II 6410 6418 6621 6377 6160 5780 5445 4735 4805 5544 5782 5525 5505 5930 6208 3943 3693 3737 3891 3399 3406 3443 IJ 6291 6315 6525 6246 6021 5642 5304 4590 4670 5423 5656 5397 5393 5815 6119 3798 3551 3603 3770 3248 3262 3307 IK 6236 6263 6474 6189 5963 5584 5246 4533 4612 5367 5600 5340 5339 5760 6069 3740 3493 3545 3714 3191 3205 3249 IL 6192 6215 6425 6150 5928 5548 5211 4500 4575 5324 5558 5300 5294 5716 6019 3707 3459 3507 3671 3162 3171 3212 IM 6163 6213 6434 6096 5856 5478 5138 4418 4514 5290 5515 5251 5277 5692 6038 3624 3385 3450 3640 3064 3092 3151 IN 5712 5800 6037 5620 5366 4990 4647 3922 4034 4836 5049 4782 4846 5250 5659 3128 2896 2975 3194 2563 2600 2673 IO 5448 5551 5796 5346 5088 4712 4368 3643 3758 4570 4779 4509 4590 4989 5427 2850 2618 2702 2933 2285 2321 2399 IP 5425 5532 5778 5320 5061 4685 4341 3615 3732 4547 4754 4484 4569 4967 5410 2821 2591 2677 2911 2255 2294 2374 IQ 5256 5397 5657 5123 4846 4472 4125 3393 3533 4377 4571 4296 4420 4808 5304 2600 2383 2490 2757 2022 2081 2185 IR 5122 5298 5572 4960 4664 4293 3943 3204 3370 4243 4423 4144 4310 4685 5235 2415 2214 2345 2648 1824 1909 2041 IS 5184 5369 5645 5013 4709 4340 3988 3247 3423 4305 4481 4201 4378 4750 5311 2461 2267 2406 2717 1864 1961 2102 IT 5105 5294 5572 4930 4625 4256 3904 3163 3341 4226 4400 4119 4302 4672 5242 2377 2184 2326 2642 1780 1878 2022 IU 5035 4179 3799 5804 6335 6243 6338 6548 6024 5232 5481 5630 4773 4883 3598 6640 6499 6184 5673 6979 6661 6345 IV 4983 4126 3748 5750 6279 6183 6275 6480 5956 5169 5421 5568 4710 4824 3540 6567 6424 6109 5598 6903 6585 6269 IW 4906 4049 3673 5673 6199 6102 6192 6394 5871 5087 5340 5486 4626 4744 3460 6480 6337 6022 5511 6816 6498 6182 IX 4844 3987 3612 5610 6135 6037 6127 6328 5805 5021 5275 5420 4561 4679 3396 6414 6272 5957 5445 6751 6433 6117 IY 4836 3979 3608 5601 6123 6020 6106 6300 5777 5002 5259 5401 4540 4665 3383 6378 6233 5918 5406 6710 6392 6076 IZ 6243 5745 5698 6661 6803 6469 6276 5877 5581 5656 6008 5897 5316 5757 5191 5341 5040 4826 4529 5182 4942 4713 JA 6059 5567 5525 6474 6615 6282 6089 5693 5394 5469 5822 5710 5131 5573 5017 5161 4861 4645 4344 5009 4767 4535 JB 7827 7545 7609 8038 7996 7622 7339 6740 6630 7066 7381 7187 6856 7318 7117 6014 5715 5629 5555 5610 5495 5397 JC 7753 7486 7559 7950 7898 7522 7236 6628 6528 6983 7295 7096 6782 7244 7070 5896 5599 5519 5457 5483 5374 5283 JD 7928 7752 7868 8042 7923 7542 7233 6575 6544 7114 7402 7179 6968 7423 7396 5807 5525 5495 5514 5329 5270 5231 JE 7770 7674 7827 7814 7643 7262 6937 6247 6271 6928 7194 6953 6829 7274 7375 5461 5196 5205 5290 4940 4922 4924 JF 5255 5470 5755 5054 4727 4363 4008 3262 3469 4378 4539 4256 4472 4832 5434 2487 2314 2477 2818 1878 2008 2176 JG 5196 5417 5705 4991 4662 4299 3943 3197 3407 4320 4479 4195 4417 4775 5387 2423 2253 2419 2766 1814 1947 2119 JH 5325 5548 5836 5115 4781 4419 4064 3317 3533 4449 4607 4322 4548 4905 5518 2546 2380 2549 2897 1935 2074 2249 JI 5243 5472 5762 5030 4695 4333 3977 3230 3449 4368 4523 4238 4471 4825 5447 2460 2296 2469 2822 1849 1991 2170 JJ 7782 7709 7871 7806 7620 7239 6909 6211 6252 6933 7192 6947 6848 7289 7426 5422 5163 5184 5289 4888 4883 4898 JK 7823 7757 7923 7840 7648 7267 6936 6235 6283 6972 7229 6982 6892 7332 7480 5445 5188 5214 5326 4907 4906 4926 JL 7794 7725 7890 7812 7623 7242 6911 6211 6256 6943 7200 6954 6861 7302 7447 5421 5163 5188 5297 4885 4883 4901 JM 3297 3759 4126 2915 2498 2161 1804 1071 1464 2492 2530 2238 2766 2986 3962 572 761 1068 1568 566 774 1039 WTG NSA 45 46 47 48 49 50 51 52 53 54 55 A 1278 1487 1727 1064 1364 1722 1072 1436 1568 1423 5470 B 1237 1453 1698 1033 1340 1704 1055 1424 1565 1462 5430 C 1163 1353 1582 923 1211 1563 914 1275 1407 1338 5346 D 6471 6159 5850 6476 6123 5737 6380 6009 5915 6862 4280 E 2176 1908 1659 2320 2048 1788 2370 2120 2235 3495 2296 F 4509 4201 3898 4539 4195 3822 4471 4115 4061 5126 2806 G 6600 6288 5979 6602 6248 5861 6504 6132 6034 6971 4409 H 6658 6345 6036 6659 6305 5918 6561 6188 6090 7025 4458 I 6566 6253 5945 6569 6216 5829 6472 6100 6004 6945 4369 J 6528 6216 5907 6532 6179 5792 6436 6064 5969 6912 4333 K 6452 6140 5831 6454 6101 5714 6357 5985 5889 6830 4294 L 6336 6024 5716 6342 5990 5605 6249 5878 5786 6741 4160 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 16 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 45 46 47 48 49 50 51 52 53 54 55 M 6202 5890 5582 6209 5858 5473 6117 5748 5658 6620 4044 N 6169 5858 5550 6177 5826 5441 6086 5716 5627 6591 4016 O 6017 5706 5398 6025 5673 5288 5933 5563 5474 6440 3919 P 6097 5787 5480 6113 5764 5383 6029 5663 5582 6566 3865 Q 6028 5717 5410 6041 5690 5307 5953 5586 5501 6478 3866 R 5967 5656 5348 5976 5624 5240 5885 5516 5428 6399 3870 S 5753 5442 5135 5765 5414 5031 5677 5310 5226 6210 3691 T 5316 5005 4698 5330 4981 4599 5246 4881 4804 5808 3383 U 5198 4890 4585 5223 4876 4499 5147 4786 4719 5746 3202 V 5141 4834 4531 5174 4830 4456 5105 4747 4688 5734 3075 W 5018 4707 4401 5033 4684 4303 4950 4586 4512 5528 3212 X 4884 4577 4275 4918 4575 4202 4851 4495 4441 5498 2923 Y 4929 4622 4320 4963 4620 4247 4896 4539 4484 5539 2950 Z 4826 4516 4209 4844 4496 4117 4765 4403 4334 5365 3076 AA 4885 4578 4276 4919 4576 4204 4853 4497 4442 5499 2923 AB 4371 4066 3767 4415 4077 3710 4360 4010 3972 5067 2595 AC 4100 3801 3508 4165 3836 3482 4128 3792 3777 4913 2290 AD 4006 3704 3407 4059 3725 3365 4013 3670 3645 4769 2407 AE 3959 3653 3352 3999 3660 3294 3943 3594 3558 4665 2535 AF 3863 3561 3266 3921 3589 3232 3879 3540 3523 4660 2331 AG 3793 3493 3198 3854 3523 3169 3815 3478 3465 4609 2296 AH 3803 3499 3199 3849 3512 3149 3798 3453 3426 4548 2454 AI 3742 3441 3147 3803 3472 3118 3765 3428 3416 4562 2293 AJ 3747 3445 3149 3804 3472 3116 3763 3425 3410 4551 2326 AK 3672 3370 3074 3729 3397 3041 3688 3350 3335 4480 2329 AL 3621 3321 3027 3683 3354 3001 3647 3312 3304 4457 2277 AM 3536 3239 2949 3609 3284 2938 3581 3253 3256 4425 2176 AN 3445 3145 2851 3508 3179 2828 3473 3141 3137 4299 2277 AO 3412 3116 2828 3489 3167 2826 3467 3143 3154 4334 2141 AP 3266 2966 2673 3330 3003 2655 3299 2970 2973 4146 2282 AQ 3309 3014 2728 3390 3070 2732 3372 3052 3068 4256 2125 AR 3293 3000 2715 3378 3060 2724 3363 3045 3065 4257 2097 AS 3250 2956 2671 3334 3017 2682 3320 3002 3023 4217 2107 AT 3946 3647 3354 4011 3682 3329 3975 3639 3627 4770 2265 AU 2638 2354 2082 2748 2450 2145 2763 2474 2540 3778 2153 AV 2573 2295 2030 2696 2405 2112 2722 2443 2522 3768 2116 AW 2421 2137 1867 2533 2238 1940 2553 2271 2348 3594 2274 AX 2534 2269 2022 2683 2411 2144 2732 2476 2579 3835 1988 AY 2413 2131 1864 2531 2238 1945 2554 2276 2358 3606 2251 AZ 2289 2044 1825 2471 2228 2003 2551 2331 2472 3733 2044 BA 2024 1779 1563 2206 1967 1756 2291 2081 2234 3494 2286 BB 1928 1683 1467 2110 1873 1666 2196 1990 2148 3407 2376 BC 1926 1689 1483 2119 1891 1697 2214 2018 2184 3441 2349 BD 1641 1438 1283 1874 1692 1568 2009 1869 2077 3310 2562 BE 1517 1340 1222 1773 1624 1544 1933 1827 2058 3268 2677 BF 1504 1336 1229 1768 1628 1560 1934 1838 2073 3277 2691 BG 1422 1273 1193 1701 1582 1543 1881 1808 2056 3241 2781 BH 1412 1273 1205 1698 1590 1563 1885 1822 2074 3251 2799 BI 1390 1261 1205 1682 1584 1570 1876 1823 2080 3248 2830 BJ 1239 1320 1465 1603 1697 1877 1886 2008 2316 3275 3470 BK 784 1016 1282 620 964 1354 735 1122 1334 1612 4977 BL 988 1266 1556 915 1273 1669 1065 1452 1667 1842 5144 BM 873 1149 1439 802 1162 1559 964 1350 1575 1822 5036 BN 838 1137 1441 841 1204 1603 1046 1423 1669 1986 4951 BO 458 758 1064 512 864 1258 775 1121 1398 1950 4610 BP 822 1137 1450 917 1271 1665 1163 1523 1791 2194 4828 BQ 753 1070 1383 873 1221 1611 1132 1483 1758 2211 4744 BR 736 1049 1361 936 1258 1633 1219 1544 1835 2377 4587 BS 491 806 1119 704 1015 1387 997 1306 1602 2226 4462 BT 739 1047 1356 962 1274 1642 1252 1566 1861 2432 4532 BU 681 949 1237 989 1243 1573 1294 1556 1866 2575 4249 BV 791 1044 1322 1109 1352 1671 1414 1668 1979 2700 4206 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 17 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 45 46 47 48 49 50 51 52 53 54 55 BW 1289 1363 1501 1653 1740 1913 1934 2049 2357 3324 3426 BX 1461 1532 1661 1825 1909 2073 2106 2217 2523 3497 3352 BY 1621 1692 1815 1985 2069 2227 2267 2376 2681 3657 3300 BZ 2656 2642 2665 3007 3004 3053 3257 3278 3554 4659 2451 CA 2694 2698 2738 3050 3066 3132 3308 3346 3629 4711 2587 CB 2785 2766 2783 3134 3127 3168 3382 3397 3671 4784 2378 CC 3540 3504 3498 3885 3857 3867 4124 4115 4377 5521 2115 CD 3487 3447 3436 3830 3798 3803 4067 4053 4314 5462 2061 CE 3528 3487 3475 3871 3838 3842 4107 4093 4352 5502 2054 CF 3361 3357 3382 3715 3721 3769 3970 3995 4271 5372 2455 CG 3604 3586 3596 3955 3946 3975 4203 4212 4482 5604 2316 CH 3700 3678 3684 4049 4036 4060 4296 4300 4568 5696 2284 CI 4680 4628 4598 5020 4972 4950 5249 5215 5463 6637 2187 CJ 4585 4519 4475 4918 4855 4817 5139 5090 5331 6520 1956 CK 4969 4908 4868 5305 5247 5213 5529 5484 5726 6912 2226 CL 5031 4968 4925 5366 5305 5267 5588 5540 5781 6970 2227 CM 5226 5159 5112 5559 5494 5451 5779 5727 5964 7158 2302 CN 5372 5305 5256 5705 5639 5594 5924 5870 6107 7303 2390 CO 5386 5317 5266 5718 5650 5602 5936 5880 6115 7313 2374 CP 5414 5346 5297 5747 5681 5634 5966 5912 6148 7344 2415 CQ 5413 5340 5286 5743 5672 5620 5959 5899 6133 7334 2351 CR 5385 5312 5257 5715 5643 5591 5931 5870 6103 7305 2325 CS 5409 5338 5286 5741 5671 5621 5958 5900 6134 7334 2370 CT 5446 5378 5328 5778 5711 5664 5997 5942 6177 7375 2429 CU 5450 5377 5322 5780 5708 5654 5996 5935 6167 7370 2367 CV 5525 5452 5398 5855 5784 5731 6071 6011 6244 7446 2431 CW 5507 5428 5367 5834 5755 5695 6046 5978 6207 7415 2335 CX 5532 5453 5391 5859 5780 5719 6071 6002 6231 7440 2348 CY 5565 5487 5428 5893 5816 5756 6106 6039 6269 7476 2395 CZ 5624 5540 5474 5949 5865 5798 6157 6084 6309 7522 2363 DA 5745 5661 5594 6070 5985 5917 6278 6204 6428 7643 2451 DB 5773 5687 5619 6097 6010 5940 6304 6228 6451 7667 2457 DC 5831 5741 5668 6153 6062 5986 6357 6276 6497 7716 2454 DD 5880 5791 5719 6202 6112 6036 6407 6326 6547 7766 2498 DE 5923 5829 5752 6242 6147 6066 6444 6358 6576 7799 2483 DF 6046 5950 5872 6364 6267 6183 6565 6477 6693 7918 2566 DG 6114 6015 5933 6431 6330 6242 6629 6537 6750 7978 2587 DH 6141 6040 5956 6457 6353 6263 6653 6559 6771 8001 2591 DI 6248 6138 6045 6558 6445 6343 6749 6644 6849 8085 2591 DJ 6333 6225 6132 6644 6532 6430 6835 6730 6936 8172 2674 DK 6321 6210 6114 6630 6515 6410 6819 6711 6915 8153 2636 DL 6372 6259 6160 6680 6562 6454 6867 6757 6958 8198 2659 DM 6462 6355 6264 6774 6664 6564 6966 6863 7070 8305 2807 DN 6416 6302 6203 6723 6605 6495 6910 6798 6999 8240 2691 DO 6468 6350 6247 6773 6650 6537 6957 6841 7039 8282 2705 DP 6526 6411 6312 6833 6714 6604 7019 6907 7107 8348 2788 DQ 6855 6725 6609 7152 7015 6884 7325 7194 7381 8631 2959 DR 6951 6829 6720 7253 7125 7002 7433 7310 7502 8750 3111 DS 6877 6745 6627 7173 7034 6901 7345 7211 7397 8649 2967 DT 7028 6900 6786 7327 7192 7063 7502 7372 7561 8811 3141 DU 7182 7051 6933 7478 7339 7206 7650 7517 7702 8954 3263 DV 7342 7207 7085 7635 7492 7353 7805 7666 7848 9101 3390 DW 7200 7053 6918 7484 7327 7172 7643 7489 7660 8918 3169 DX 7449 7310 7183 7739 7591 7446 7905 7760 7937 9193 3462 DY 7631 7490 7362 7920 7770 7623 8084 7938 8113 9370 3632 DZ 7921 7778 7647 8209 8056 7904 8371 8221 8393 9651 3902 EA 7679 7538 7409 7968 7817 7668 8131 7983 8158 9415 3673 EB 7981 7837 7705 8268 8114 7961 8429 8278 8449 9707 3955 EC 8368 8216 8075 8648 8485 8320 8802 8640 8803 10063 4293 ED 8404 8254 8115 8686 8525 8362 8841 8681 8846 10106 4338 EE 8424 8271 8130 8704 8539 8373 8856 8693 8855 10116 4344 EF 8457 8306 8165 8738 8575 8411 8892 8730 8894 10154 4384 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 18 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 45 46 47 48 49 50 51 52 53 54 55 EG 8546 8394 8253 8826 8662 8497 8979 8817 8979 10240 4468 EH 8579 8426 8285 8859 8694 8528 9012 8849 9010 10271 4499 EI 8607 8452 8309 8885 8719 8551 9037 8872 9032 10293 4519 EJ 8793 8636 8490 9070 8900 8728 9218 9050 9207 10468 4692 EK 9125 8967 8820 9401 9230 9056 9548 9378 9533 10795 5018 EL 9105 8949 8803 9382 9213 9041 9531 9363 9520 10781 5005 EM 6956 6827 6711 7253 7117 6986 7427 7296 7484 8734 3061 EN 7675 7536 7409 7965 7817 7671 8130 7986 8162 9418 3683 EO 6120 6018 5932 6435 6330 6238 6631 6535 6746 7976 2557 EP 6101 5996 5907 6414 6306 6210 6608 6508 6717 7950 2507 EQ 6122 6014 5923 6433 6322 6223 6625 6522 6729 7964 2496 ER 6026 5911 5812 6333 6214 6106 6519 6408 6610 7850 2339 ES 5998 5879 5776 6302 6179 6067 6485 6371 6570 7812 2275 ET 5946 5821 5711 6246 6116 5995 6424 6302 6496 7742 2161 EU 5940 5813 5702 6239 6107 5984 6416 6292 6485 7731 2141 EV 5879 5745 5627 6173 6033 5902 6344 6212 6400 7650 2020 EW 5689 5527 5380 5961 5790 5625 6108 5944 6110 7369 1616 EX 5812 5649 5502 6083 5912 5745 6230 6065 6229 7489 1731 EY 5738 5552 5380 5987 5790 5592 6112 5918 6061 7322 1555 EZ 5712 5522 5346 5958 5756 5553 6078 5880 6018 7279 1523 FA 5711 5519 5342 5955 5751 5547 6074 5874 6011 7271 1520 FB 5724 5527 5345 5963 5753 5542 6076 5870 6002 7262 1531 FC 5730 5517 5317 5950 5722 5489 6046 5820 5933 7187 1574 FD 5669 5454 5251 5887 5656 5420 5979 5751 5861 7115 1527 FE 5744 5528 5325 5961 5729 5492 6053 5823 5932 7185 1604 FF 5752 5531 5321 5962 5724 5478 6047 5810 5913 7162 1645 FG 5766 5537 5320 5966 5719 5463 6042 5795 5887 7131 1718 FH 5854 5612 5381 6036 5773 5499 6095 5830 5904 7135 1932 FI 5971 5803 5651 6238 6061 5887 6380 6208 6367 7628 1857 FJ 6015 5842 5683 6277 6093 5911 6413 6234 6387 7649 1872 FK 6048 5876 5719 6311 6129 5949 6449 6272 6426 7687 1911 FL 5822 5684 5562 6113 5969 5833 6281 6144 6330 7581 1932 FM 5688 5548 5424 5977 5831 5693 6144 6005 6189 7441 1789 FN 7948 7670 7397 8063 7753 7417 8057 7735 7733 8862 4391 FO 4763 4510 4268 4928 4655 4370 4974 4701 4769 5997 1293 FP 7916 7638 7366 8032 7723 7389 8027 7707 7706 8838 4349 FQ 7896 7616 7343 8008 7697 7361 8001 7678 7674 8802 4358 FR 8289 8007 7731 8396 8081 7741 8383 8056 8045 9159 4771 FS 5922 5791 5676 6218 6082 5955 6392 6263 6454 7702 2089 FT 8575 8291 8011 8676 8357 8012 8656 8325 8307 9407 5092 FU 8768 8484 8205 8870 8552 8207 8851 8519 8502 9601 5265 FV 8847 8563 8284 8949 8630 8285 8929 8598 8580 9678 5341 FW 5415 5157 4909 5572 5292 4997 5609 5326 5381 6594 1802 FX 5287 5025 4771 5436 5149 4847 5465 5176 5223 6429 1811 FY 5030 4766 4512 5176 4889 4587 5205 4915 4963 6171 1669 FZ 7447 7174 6908 7575 7272 6947 7581 7269 7281 8435 3820 GA 4756 4488 4229 4894 4603 4295 4917 4623 4666 5871 1619 GB 4658 4408 4169 4396 4097 3781 4118 3792 3497 3545 6127 GC 4411 4172 3946 4136 3849 3550 3852 3539 3237 3222 6109 GD 4215 3976 3750 3941 3653 3353 3657 3343 3041 3051 5960 GE 4191 3954 3732 3913 3629 3334 3628 3317 3014 3003 5983 GF 3974 3748 3539 3684 3413 3135 3394 3097 2789 2717 5970 GG 3859 3634 3426 3570 3298 3021 3280 2983 2675 2617 5889 GH 3556 3341 3145 3259 2997 2736 2965 2679 2368 2282 5781 GI 3642 3440 3258 3333 3087 2846 3034 2767 2453 2254 5979 GJ 3153 2971 2814 2831 2608 2402 2529 2287 1972 1713 5798 GK 3059 2883 2734 2733 2517 2322 2430 2197 1883 1597 5779 GL 2882 2712 2572 2553 2344 2162 2249 2025 1711 1422 5695 GM 2920 2755 2619 2588 2385 2210 2284 2066 1754 1418 5758 GN 2667 2512 2389 2331 2139 1984 2026 1823 1513 1177 5635 GO 2552 2414 2313 2208 2039 1915 1902 1728 1426 984 5661 GP 2185 2057 1971 1839 1680 1584 1534 1374 1081 750 5432 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 19 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 45 46 47 48 49 50 51 52 53 54 55 GQ 1984 1875 1816 1632 1498 1446 1328 1205 933 587 5375 GR 1645 1552 1520 1289 1178 1178 987 902 671 610 5180 GS 1594 1588 1643 1231 1247 1380 969 1057 939 442 5421 GT 1631 1654 1733 1273 1330 1495 1034 1166 1075 450 5532 GU 1543 1568 1653 1185 1248 1425 948 1095 1020 531 5458 GV 1586 1626 1723 1233 1316 1506 1010 1175 1110 537 5535 GW 1586 1638 1746 1237 1337 1542 1026 1210 1157 580 5563 GX 1594 1660 1780 1251 1370 1589 1054 1257 1218 631 5601 GY 1584 1668 1803 1250 1393 1631 1073 1300 1280 714 5628 GZ 5626 5418 5221 5319 5070 4813 5020 4751 4438 4118 7490 HA 5673 5470 5279 5361 5119 4870 5060 4799 4485 4127 7599 HB 5579 5377 5187 5267 5026 4778 4966 4705 4391 4034 7528 HC 5621 5425 5242 5303 5070 4831 5001 4749 4434 4033 7644 HD 5378 5179 4994 5063 4826 4584 4762 4506 4191 3820 7402 HE 5530 5338 5159 5210 4981 4748 4907 4660 4345 3925 7609 HF 5483 5293 5117 5161 4935 4706 4858 4614 4299 3865 7598 HG 5264 5069 4889 4946 4713 4478 4644 4393 4078 3686 7355 HH 5741 5572 5418 5406 5205 5006 5100 4885 4571 4005 8053 HI 5663 5521 5395 5316 5147 4986 5011 4832 4523 3819 8247 HJ 5607 5471 5351 5258 5096 4944 4953 4783 4475 3744 8250 HK 5526 5397 5284 5174 5021 4878 4870 4709 4404 3641 8238 HL 5568 5441 5331 5215 5065 4926 4911 4754 4450 3674 8298 HM 5465 5339 5230 5111 4963 4825 4808 4652 4348 3570 8213 HN 5406 5282 5175 5052 4906 4771 4749 4596 4292 3507 8174 HO 5432 5310 5205 5078 4934 4801 4775 4624 4322 3527 8214 HP 5416 5296 5192 5062 4919 4789 4759 4610 4308 3507 8211 HQ 5403 5284 5183 5048 4908 4780 4746 4599 4298 3490 8214 HR 5380 5263 5163 5025 4886 4761 4723 4579 4278 3462 8207 HS 5342 5228 5132 4986 4851 4731 4684 4545 4245 3415 8200 HT 5194 5094 5013 4834 4717 4618 4535 4416 4123 3233 8176 HU 5262 5167 5090 4901 4790 4697 4604 4491 4200 3291 8272 HV 5127 5039 4969 4766 4662 4579 4470 4366 4078 3145 8195 HW 5117 5030 4963 4755 4654 4574 4460 4359 4072 3130 8201 HX 4999 4926 4873 4635 4552 4491 4345 4264 3985 2991 8187 HY 4981 4911 4861 4617 4537 4480 4327 4250 3973 2969 8189 HZ 4943 4877 4831 4579 4503 4453 4291 4219 3944 2927 8180 IA 4756 4707 4678 4391 4337 4311 4109 4062 3799 2725 8111 IB 4727 4680 4655 4362 4311 4289 4081 4038 3776 2695 8100 IC 4701 4656 4633 4336 4287 4268 4056 4016 3755 2668 8087 ID 4652 4612 4593 4287 4244 4232 4009 3976 3719 2617 8068 IE 4605 4574 4564 4241 4209 4209 3967 3946 3695 2569 8073 IF 4565 4539 4536 4201 4177 4186 3930 3918 3672 2530 8069 IG 4533 4517 4524 4170 4158 4181 3905 3907 3669 2502 8091 IH 4408 4403 4421 4047 4048 4087 3787 3805 3576 2385 8025 II 3047 3069 3122 2691 2731 2827 2448 2520 2336 1079 6850 IJ 2899 2928 2990 2545 2595 2706 2308 2394 2221 960 6737 IK 2841 2871 2933 2487 2538 2650 2250 2338 2167 906 6683 IL 2811 2836 2894 2456 2500 2607 2215 2296 2122 861 6637 IM 2719 2764 2843 2371 2442 2578 2146 2259 2109 857 6618 IN 2221 2279 2377 1876 1971 2142 1665 1814 1703 561 6180 IO 1942 2003 2109 1598 1701 1889 1391 1558 1472 501 5920 IP 1913 1976 2085 1570 1676 1869 1365 1538 1457 516 5898 IQ 1689 1779 1916 1358 1506 1742 1185 1410 1382 707 5740 IR 1505 1628 1797 1196 1392 1673 1068 1348 1376 927 5617 IS 1553 1688 1865 1254 1463 1750 1140 1427 1460 979 5682 IT 1469 1608 1790 1173 1389 1685 1067 1365 1411 1013 5604 IU 6938 6625 6315 6936 6582 6194 6835 6461 6359 7280 4708 IV 6860 6547 6238 6858 6503 6115 6756 6382 6279 7199 4662 IW 6773 6460 6150 6771 6416 6028 6669 6296 6193 7117 4589 IX 6709 6396 6087 6708 6353 5965 6607 6234 6133 7059 4529 IY 6665 6352 6042 6661 6306 5917 6558 6184 6080 7001 4529 IZ 4888 4644 4412 4616 4326 4020 4333 4017 3717 3690 6408 Continued on next page... WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Main Result Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 20 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65...continued from previous page WTG NSA 45 46 47 48 49 50 51 52 53 54 55 JA 4718 4472 4237 4451 4157 3846 4171 3850 3552 3566 6228 JB 5250 5138 5044 4893 4761 4644 4592 4455 4157 3319 8132 JC 5122 5017 4930 4764 4640 4533 4464 4337 4041 3177 8067 JD 4966 4914 4882 4602 4543 4512 4319 4267 4000 2937 8289 JE 4583 4574 4586 4222 4217 4247 3959 3969 3735 2556 8169 JF 1592 1762 1966 1327 1574 1889 1257 1574 1635 1179 5762 JG 1531 1705 1915 1271 1525 1847 1211 1536 1608 1209 5704 JH 1658 1836 2046 1402 1656 1975 1341 1662 1725 1241 5835 JI 1574 1757 1972 1323 1586 1912 1273 1603 1678 1263 5754 JJ 4534 4539 4565 4175 4188 4237 3921 3951 3729 2522 8191 JK 4554 4564 4595 4196 4216 4272 3945 3983 3765 2550 8235 JL 4531 4539 4569 4173 4190 4244 3921 3956 3736 2524 8204 JM 922 1085 1305 1281 1444 1697 1580 1765 2080 2935 3850 WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - Assumptions for noise calculation Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 21 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65 Noise calculation model: ISO 9613-2 General Wind speed: 6.0 m/s Ground attenuation: General, Ground factor: 0.7 Meteorological coefficient, C0: 0.0 db Type of demand in calculation: 1: WTG noise is compared to demand (DK, DE, SE, NL etc.) Noise values in calculation: All noise values are mean values (Lwa) (Normal) Pure tones: Pure and Impulse tone penalty are added to WTG source noise Height above ground level, when no value in NSA object: 1.8 m Don't allow override of model height with height from NSA object Deviation from "official" noise demands. Negative is more restrictive, positive is less restrictive.: 0.0 db(a) Octave data required Air absorption 63 125 250 500 1,000 2,000 4,000 8,000 [db/km] [db/km] [db/km] [db/km] [db/km] [db/km] [db/km] [db/km] 0.1 0.4 1.0 1.9 3.7 9.7 32.8 117.0 WTG: VESTAS V80-1.8MW 60Hz 60Hz 1800 80.0!O! Noise: Runtime input Source Source/Date Creator Edited 30/12/1899 USER 30/12/1899 12:00 AM Octave data Status Hub height Wind speed LwA,ref Pure tones 63 125 250 500 1000 2000 4000 8000 [m] [m/s] [db(a)] [db] [db] [db] [db] [db] [db] [db] [db] User value 80.0 6.0 106.4 No Generic data 88.0 95.0 98.4 101.0 100.8 97.9 93.1 83.6 WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

Project: West Cape Description: Sept 6th Update, C8 moved 106.4 dba (Maximum theoretical turbine output + 2 dba) 0.7 Ground Porosity No foliage noise shielding effects No background masking noise No tonality 1.8 m receiver height (ear level of tall person) WindPro Generated Octave band data used due to noise emmision level being much higher than measured noise data (no available octave band data for the emission level) DECIBEL - 1-50 000 Calculation: Sept 6th Update: All Turbines, 106.4 dba, 0.7 Ground Porosity File: 1-50 000.bmi WindPRO 2 version 2.5.3.65 Apr 2006 Printed/Page 19/09/2006 10:35 AM / 22 Licensed user: M.K.Ince and Associates, Wind Energy Engineering 984 Garden Lane, RR#1 Millgrove CA-ONTARIO L0R 1V0 +1 905 689 3900 Calculated: 18/09/2006 1:05 PM/2.5.3.65 0 1 2 3 4 km Map: 1-50 000, Print scale 1:100,000, Map center UTM NAD 83 Zone: 20 East: 395,132 North: 5,171,451 Noise calculation model: ISO 9613-2 General. Wind speed: 6.0 m/s New WTG Noise sensitive area Height above sea level from active line object 35.0 db(a) 40.0 db(a) 45.0 db(a) 50.0 db(a) 55.0 db(a) WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: windpro@emd.dk

APPENDIX C ***CONFIDENTIAL*** West Cape Wind Farm: Turbine Manufacturer Noise Specifications General Specification V80 1.8 MW Acoustic Noise Measurement, Final Report, V80 1.8 MW

Item no. 944411.R7 General Specification V80 1.80 MW 60 Hz, OptiSlip - Wind Turbine (6a)

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. Contents...Page 1. Introduction... 3 2. Wind Climate... 3 3. Wind Turbine Description... 4 4. General Overview... 5 5. OptiSlip Description... 5 6. Power Curves and Sound Levels... 6 6.1 Power Curve for Vestas V80 1.8 MW, IEC class I... 6 6.1.1 Power Curve for Vestas V80 1.8 MW, IEC class I... 6 6.1.2 Annual Production V80-1.8 MW, IEC Class I... 7 6.2 Noise Curves V80 1.8MW, IEC Class I... 8 6.3 Calculated Data for Vestas V80 1.8 MW, IEC Class II... 9 6.3.1 Power Curve for Vestas V80-1.8 MW, IEC Class II... 9 6.3.2 Annual Production V80-1.8 MW, IEC Class II... 10 6.4 Noise Curves V80 1.8MW, IEC Class II... 11 7. Specifications... 12 7.1 Rotor... 12 7.2 Blades... 12 7.3 Blade Bearing... 12 7.4 Blade Hub... 12 7.5 Main Shaft... 12 7.6 Bearing Housing... 12 7.7 Main Bearings... 12 7.8 Machine Foundation... 13 7.9 Yaw System... 13 7.10 Yaw Gears... 13 7.11 Steel Tower... 13 7.12 Gearbox... 13 7.13 Couplings... 14 7.14 Generator... 14 7.15 Parking Brake... 14 7.16 Hydraulic Unit... 14 7.17 Anemometer and Wind Direction Sensor... 14 7.18 Lightning Protection... 14 7.19 Control Unit... 15 7.20 Transformer... 15 7.21 Weights... 16 8. Installation... 16 8.1 Terrain... 16 8.2 Climatic Conditions... 16 8.3 Grid Connection... 17 9. General Reservations, Notes and Disclaimers... 18 10. Performance Note... 18 Page: 2 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. 1. Introduction The Vestas V80-1.8 MW wind turbine is based on experience gained from several generations of Vestas Wind Turbines. It is designed around a platform closely resembling the Vestas V66-1.65 MW Wind Turbine The Vestas 1.8 MW, with a rotor diameter of 80 m (264 ft.), utilises the Vestas OptiSlip concept. When compared to regular pitch or stall regulated wind turbines, OptiSlip technology produces a smoother power output and significant load reductions. The Vestas OptiTip feature is also standard on the Vestas V80-1.8 MW turbine. OptiTip continuously optimises the blade tip angle for improved power performance and reduced sound emission. 2. Wind Climate Turbulence describes short-term wind variations or fluctuations. The conditions for which the VESTAS V80-1.8 MW wind turbine was designed are listed below. IEC Class Tower height [m] I 60 78 II 60 78 A- parameter [m/s] C- parameter [-] Turbulence at 15 m/s [%] Reference wind 1) [m/s] Reference wind 2) [m/s] 11.3 2.0 18.0 50.0 70.0 9.59 2.0 18.0 42.5 59.5 1) 10 min., 50 year wind 2) 5 sec., 50 year wind gust Wind speed and turbulence are referenced at hub height. The maximum wind speeds at which the turbine may be operated are listed below. Model Wind gust Max. Acc. [m/s 2 ] Stop Wind Speed/ Restart Wind Speed [m/s] V80-1.8 MW 10 25/20 Page: 3 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. 3. Wind Turbine Description The Vestas V80-1.8 MW is a pitch-regulated, upwind wind turbine with active yaw and a three - blade rotor. The blades are made of glass fibre reinforced epoxy. Each blade consists of two shells, bonded to a supporting beam. Special steel root inserts connect the blade to the blade bearing. The blade bearing is a 4-point contact ball bearing bolted to the blade hub. The main shaft transmits the power to the generator through a combined planetary-helical gearbox. Power is transmitted from the gearbox to the generator via a maintenance-free composite coupling. The generator is an asynchronous (induction) 4-pole generator with wound rotor and Vestas OptiSlip technology. Grid connection is accomplished through thyristors that are by-passed after generator cut-in. The pitch system together with the unique Vestas OptiSlip generator combine to maintain smooth, nominal power output at higher wind speeds. This power output is hence independent of air temperature and air density. At lower wind speeds, the pitch system and OptiTip technology optimise the power through the calculated blade pitch angle. Turbine braking is accomplished by full blade feathering. A secondary fail-safe mechanical brake system is mounted on the High- Speed shaft connecting the gearbox to the generator. All turbine functions are monitored and controlled by microprocessor-based control units in the nacelle. Blade pitch changes are activated by hydraulics that also supply mechanical brake-system pressure. Each blade is equipped with a hydraulic cylinder enabling the blade to rotate 95. Four (4) electrical yaw gear-motors perform nacelle yawing. The yaw bearing system is a plain bearing system with built-in friction and self-locking mechanisms. The power transformer, which converts generator voltages to distribution-level voltages of up to 34.5 kv, is housed in the nacelle. The glass fibre reinforced nacelle cover provides protection for the components in it. A central opening provides access to the nacelle from the tower. The nacelle houses the internal 800-kg (1760-lb.) service crane. As an option, this can be enlarged for the hoisting of main components (SWL = 7500 kg, (16534 lbs.)). The steel tower is supplied with the standard Vestas American Wind Technology coating system as specified in Section 7. The customer may choose to use an optional system based upon specific environmental conditions of the proposed site. Page: 4 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. 4. General Overview Model V80-1.8 Rotor Diameter 80 m [264 ft.] Nominal RPM Hub Height 15.5/16.8 60/67/78 m. [198/221/257 ft.] 5. OptiSlip Description Asynchronous (induction) generator slip is defined as the difference between the synchronous speed and the actual generator speed. The standard slip for big, nonregulated asynchronous generators is about 1%, such that the rpm value is 1% higher when the generator is completely loaded, than without the load. Thus, speed and load changes are interdependent. The Vestas OptiSlip allows the generator slip to vary from 1% to 10%, reducing speed and load interdependency. Through OptiSlip technology, the excess power of a sudden wind gust is not sent directly to the electrical grid. As a further advantage, the resulting mechanical loads on the wind turbine are also reduced. Nevertheless, wind power during a wind gust is not lost, but briefly stored in a flywheel consisting of blades, gear and generator. The power during a wind gust leads to a short acceleration condition. The Vestas OptiSlip with the Vestas pitch regulation system then reduces the rpm to a constant speed. At that time the stored power is released and sent to the electrical grid. Vestas OptiSlip provides the benefit of smooth electrical grid power quality, while minimising wind turbine loads. Vestas OptiSlip was introduced in 1994 and is operating successfully on thousands of Vestas wind turbines around the world. Page: 5 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. 6. Power Curves and Sound Levels 6.1 Power Curve for Vestas V80 1.8 MW, IEC class I 6.1.1 Power Curve for Vestas V80 1.8 MW, IEC class I The parameters for the curves are: Frequency: 60 Hz. Rotor diameter: 80 meters [264 ft.] Nominal Rotor speed: 16.8 rpm. Tip angle: Pitch regulated Turbulence: 10 % The power curve is measured on the low-voltage side of the transformer. Transformer and high-voltage cable losses are not accounted for. Electrical-power [kw] as a function of wind speed [m/s] at hub height and density [kg/m 3 ] V 10 [m/s] 1.225 1.06 1.09 1.12 1.15 1.18 1.21 1.24 1.27 4 3-7 -6-4 -2 0 2 4 5 5 99 74 79 84 89 93 97 101 105 6 260 203 212 223 233 244 255 265 276 7 465 393 405 417 431 445 459 472 485 8 735 630 650 670 689 708 726 744 762 9 1015 892 913 935 959 982 1004 1026 1048 10 1345 1182 1210 1239 1270 1300 1330 1359 1388 11 1639 1498 1527 1555 1579 1603 1627 1651 1672 12 1775 1722 1740 1753 1759 1766 1772 1779 1783 13 1797 1789 1792 1794 1795 1796 1797 1798 1799 14 1802 1800 1800 1801 1801 1802 1802 1802 1802 15 1802 1802 1802 1802 1802 1802 1802 1802 1802 16 1802 1802 1802 1802 1802 1802 1802 1802 1802 17 1802 1802 1802 1802 1802 1802 1802 1802 1802 18 1802 1802 1802 1802 1802 1802 1802 1802 1802 19 1802 1802 1802 1802 1802 1802 1802 1802 1802 20 1802 1802 1802 1802 1802 1803 1802 1802 1802 21 1802 1802 1802 1802 1802 1802 1802 1802 1802 22 1802 1802 1802 1802 1802 1802 1802 1802 1802 23 1802 1802 1802 1802 1802 1802 1802 1802 1800 24 1800 1802 1802 1800 1800 1800 1800 1800 1800 25 1800 1800 1800 1800 1800 1800 1800 1800 1800 Page: 6 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. Power [kw] 2000 1800 1600 1400 1200 1000 800 600 400 200 0 V80-1.8 MW Air density 1.225 kg/m 3 0 5 10 15 20 25 Wind speed [m/s] Wind speed is represented as a 10-minute average value with a reference point at the hub height and perpendicular to the rotor plane. 6.1.2 Annual Production V80-1.8 MW, IEC Class I The estimated production is corrected to the standard air density of 1.225 kg/m3 and calculated on the assumption that the availability is 100 %, at a hub height of 78 m [257.4 ft.] and with a 25 m/s stop wind speed. Mean Wind speed [m/s] Annual Production [MWh] C = 1.5 C = 2.0 C = 2.5 5 2926 2412 2016 6 4216 3918 3600 7 5398 5430 5323 8 6404 6812 6964 9 7210 8000 8408 10 7819 8966 9615 Page: 7 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. 6.2 Noise Curves V80 1.8MW, IEC Class I All noise curves are calculated at 8 m/s at a height of 10-m [33 ft.]. Theoretical calculated noise curve for the V80-1,8MW in roughness class 2 (Hubheight = 78/100 m) 112 Sound Power Level [db(a) re 1pW] 110 108 106 104 102 100 98 96 Hub height = 100m L @ 4m/s = 101.5 db(a) WAeq L @ 5m/s = 102.3 db(a) WAeq L @ 6m/s = 103 db(a) WAeq L WAeq @ 7m/s = 103.9 db(a) L WAeq @ 8m/s = 104.5 db(a) L WAeq @ 9m/s = 104.4 db(a) L @ 10m/s = 104.4 db(a) WAeq Accuracy = +/- 2 db(a) Hub height = 78m L @ 4m/s = 101.4 db(a) WAeq L @ 5m/s = 102.2 db(a) WAeq L @ 6m/s = 102.8 db(a) WAeq L WAeq @ 7m/s = 103.7 db(a) L WAeq @ 8m/s = 104.4 db(a) L WAeq @ 9m/s = 104.4 db(a) L @ 10m/s = 104.4 db(a) WAeq Accuracy = +/- 2 db(a) 94 Acceptance Level = L WAeq + Accuracy 92 3 4 5 6 7 8 9 10 11 12 13 Wind speed in 10 meters height above ground level [m/s] Page: 8 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. 6.3 Calculated Data for Vestas V80 1.8 MW, IEC Class II 6.3.1 Power Curve for Vestas V80-1.8 MW, IEC Class II The parameters for the curves are: Frequency: 60 Hz. Rotor diameter: 80 meters [264 ft.] Nominal Rotor speed: 15.5 rpm. Tip angle: Pitch regulated Turbulence: 10 % The power curve is measured on the low-voltage side of the transformer. Transformer and high-voltage cable losses are not accounted for. Electrical-power [kw] as a function of wind speed [m/s] at hub height and density [kg/m 3 ] V 10 [m/s] 1.225 1.06 1.09 1.12 1.15 1.18 1.21 1.24 1.27 4 7 1 2 3 4 6 7 8 9 5 109 89 92 96 100 103 107 111 115 6 253 213 220 228 235 242 249 256 264 7 443 379 390 402 414 426 438 449 461 8 682 586 604 621 638 656 673 690 707 9 968 835 859 883 907 931 956 980 1004 10 1286 1110 1142 1174 1206 1238 1270 1302 1334 11 1582 1387 1426 1464 1500 1534 1567 1596 1624 12 1748 1624 1656 1683 1706 1726 1741 1754 1764 13 1793 1754 1767 1777 1783 1788 1792 1794 1796 14 1799 1793 1795 1797 1798 1799 1799 1800 1800 15 1800 1799 1800 1800 1800 1800 1800 1800 1800 16 1800 1800 1800 1800 1800 1800 1800 1800 1800 17 1800 1800 1800 1800 1800 1800 1800 1800 1800 18 1800 1800 1800 1800 1800 1800 1800 1800 1800 19 1800 1800 1800 1800 1800 1800 1800 1800 1800 20 1800 1800 1800 1800 1800 1800 1800 1800 1800 21 1800 1800 1800 1800 1800 1800 1800 1800 1800 22 1800 1800 1800 1800 1800 1800 1800 1800 1800 23 1800 1800 1800 1800 1800 1800 1800 1800 1800 24 1800 1800 1800 1800 1800 1800 1800 1800 1800 25 1800 1800 1800 1800 1800 1800 1800 1800 1800 Wind speed is represented as a 10-minute average value with a reference point at the hub height and perpendicular to the rotor plane. Page: 9 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. Power [kw] 2000 1800 1600 1400 1200 1000 800 600 400 200 0 V80-1.8 MW Air density 1.225 kg/m 3 0 5 10 15 20 25 Wind speed [m/s] 6.3.2 Annual Production V80-1.8 MW, IEC Class II The estimated production is corrected to the standard air density of 1.225 kg/m3 and calculated on the assumption that the availability is 100 %, the hub height is 78 m [257.4 ft.] and with a 25 m/s stop wind speed. Annual Production [MWh] Mean Wind speed [m/s] C = 1.5 C = 2.0 C = 2.5 5 2841 2331 1950 6 4105 3789 3464 7 5271 5271 5138 8 6271 6640 6756 9 7076 7826 8196 10 7686 8797 9413 Page: 10 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. 6.4 Noise Curves V80 1.8MW, IEC Class II All noise curves are calculated at 8 m/s at a height of 10-m [33 ft.]. Theoretical calculated noise curve for the V80-1,8MW in roughness class 2 (Hubheight = 78/100 m) 112 Sound Power Level [db(a) re 1pW] 110 108 106 104 102 100 98 96 94 Hub height = 100m L @ 4m/s = 99.8 db(a) WAeq L @ 5m/s = 100.7 db(a) WAeq L @ 6m/s = 101.4 db(a) WAeq L WAeq @ 7m/s = 102 db(a) L WAeq @ 8m/s = 102.7 db(a) L WAeq @ 9m/s = 102.9 db(a) L @ 10m/s = 102.7 db(a) WAeq Accuracy = +/- 2 db(a) Acceptance Level = L WAeq + Accuracy Hub height = 78m L @ 4m/s = 99.7 db(a) WAeq L @ 5m/s = 100.6 db(a) WAeq L @ 6m/s = 101.3 db(a) WAeq L WAeq @ 7m/s = 101.8 db(a) L WAeq @ 8m/s = 102.4 db(a) L WAeq @ 9m/s = 102.9 db(a) L @ 10m/s = 102.8 db(a) WAeq Accuracy = +/- 2 db(a) 92 3 4 5 6 7 8 9 10 11 12 13 Wind speed in 10 meters height above ground level [m/s] Page: 11 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. 7. Specifications 7.1 Rotor 7.2 Blades Diameter: 80 m [264 ft.] Swept area: 5027 m 2 [54,114 ft 2 ] Rotational speed static, rotor: 16.8 RPM (IEC Class I) 15.5 RPM (IEC Class II) Rotational direction: Clockwise (front view) Orientation: Upwind Tilt: 6 Blade coning 2 Number of blades: 3 Aerodynamic brakes: Full feathering Principle: Shells bonded to supporting beam Material: Glass fibre reinforced epoxy Blade connection: Steel root inserts Air foils: NACA63 profile series and FFA-W3 Length: 39 m [129 ft.] Chord (width) (blade root/blade 3.52 m /0.48 m [11.62 ft/1.6 ft] tip): Twist (blade root/blade tip): 13 /0 Weight per blade: Approx. 6,500 kg. (14,300 lbs.) 7.3 Blade Bearing Type: 7.4 Blade Hub Type: Material: 7.5 Main Shaft Type: Material: 7.6 Bearing Housing Type: Material: 7.7 Main Bearings Type: 4-point contact ball bearing Cast ball hub EN-GJS-400-18U-LT Forged, hollow shaft 42CrMo4 V / EN10083 Cast foot housing with lowered centre EN-GJS-400-18U-LT Spherical roller bearings from recognised suppliers Page: 12 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. 7.8 Machine Foundation Type: 7.9 Yaw System Type: Material: Yawing speed: 7.10 Yaw Gears Type: Motor: Cast EN-GJS-400-18U-LT Plain bearing system with built-in friction Forged yaw ring: heat-treated. Plain bearings: PETP. < 0.5 /sec Planetary-/worm gear combination, 2 step planetary/1 step worm gear with torque limiter 2.5 kw, 6 pole, asynchronous (induction) 7.11 Steel Tower Type: Conical tubular Material: ASTM A709-Grade 36 or 50 Surface treatment: Painted in accordance with ISO 12944-2 Corrosion class, outside: C4 Corrosion class, inside C3 Top diameter for all towers: 2.3 m (7.6 ft) Bottom diameter for all towers 4.0 m (13.2 ft) Exact Hub Height 3-section, modular tower (60 m): 60 m (198 ft) 3-section, modular tower (67 m): 67 m (221 ft) 4-section, modular tower (78 m): 78 m (257 ft) The exact hub height includes 0.4 m [1.3 ft] distance from the top of the foundation to the top of the foundation insert section flange, and 1.7 m [5.61 ft] distance from the top flange to the centre of the hub. 7.12 Gearbox IEC1A Type: 1 planetary stage / 2 helical stages Ratio: 60 Hz: 1:111.0 60 Hz: 1:120.6 IEC2A 1 planetary stage / 2 helical stages Cooling: Oil-pump with oil-cooler Oil-pump with oil-cooler Oil heater: 2 kw 2 kw Oil filtration: 3 µm off-line filter unit + 25µm inline filter 3 µm off-line filter unit + 25µm inline filter Manufacturer: Vestas has a number of sub-suppliers of gearboxes. All gearboxes are in compliance with Vestas specifications. Page: 13 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. 7.13 Couplings Main shaft-gearbox: Type: Gearbox: Type: Shrink disc, conical Composite shaft 7.14 Generator Type: Asynchronous [induction] with wound rotor, slip-rings and VRCC (OptiSlip technology) Rated power: 1.8 MW Voltage: 690 VAC Frequency: 60Hz No. of poles: 4 Class of insulation: F or better Class of protection: IP54 Slip regulation interval: 1-10 % Nominal slip: 4% Nominal speed: 1872 RPM Power factor, generator: 0.90 Rated current: 1673 Power factor correction: 864 kvar Resulting power factor 690V: 0.999 Resulting current: 1507 Amps 7.15 Parking Brake Type: Diameter: Disc material: 7.16 Hydraulic Unit Pump capacity: Max. Pressure: Brake pressure: Oil quantity: Motor: Disc Brake 600 mm [24 inches] SJV300 44 l/min (11.6 gal/min) 200 bar (2900 psi) 28 bar (406 psi) 300 l (79.3 gal) 18.5 kw 7.17 Anemometer and Wind Direction Sensor Type: 1 ultrasonic sensor 7.18 Lightning Protection Down-conductors in blades Equipotential bonding A down-conductor is placed in each rotor blade The machine frames, crane bars, crane pillars and the tower are equipotentially bonded Page: 14 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. 7.19 Control Unit Power current: Voltage: Frequency Power supply for light and plugs: Computer: Communication: Program memory: Programming language: Configuration: Operation: Display: Processor Supervision/control: Information: Commands: 3 x 690 VAC 60 Hz 110 VAC ARCNET EPROM (flash) Modula-2 Modules Numeric keyboard + function keys 4 x 40 characters Yawing Hydraulics Ambient Surroundings (wind, temperature) Rotation Generator Pitch system Grid Power factor correction Thyristors Remote monitoring Operating data Production Operation log Alarm log Run/Pause Man. Yaw start/stop Maintenance routine REMOTE SUPERVISION Possible serial communication connection. 7.20 Transformer Type: Cast resin Rated Power: 1850 kva High voltage: 6 34,5 kv (36kV equipment voltage) Frequency 60 Hz Vector group: Yn/Yn, unless otherwise specified Low voltage: 690 Vac HV Tabs: +/- 2 x 2.5% Impedance voltage: 6.8% Page: 15 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. 7.21 Weights [Weights in tons = 1000 kg] Nacelle: Rotor: [70 tons] [37.5 tons] 8. Installation 8.1 Terrain Particular considerations must be taken if the terrain has a slope of more than 10 within a 100-m [330ft.] radius of the turbine. In all cases, it is recommended to consult Vestas prior to final site selection. 8.2 Climatic Conditions The turbine is designed for an ambient temperature range of -20 C [-4 o F] to +40 C [+104 o F]. At temperatures less than 20 C [-4 o F] and greater than +40 C [+104 o F] the turbine will not generate power, and special considerations must be undertaken. The turbine has been designed in accordance with IEC 61400-1 class I A wind conditions and can be placed in wind farms with a minimum distance of 5 (five) rotor diameters (400 m/1320 ft) between all turbines. If the turbines are placed in a single row, perpendicular to the predominant wind direction, the distance between adjacent turbines must be a minimum of 4 (four) rotor diameters (320 m/1056 ft). The relatively humidity can be 100 % (max. 10 % of the time). Corrosion Corrosion protection is in accordance with ISO Standard12944-2. All Vestas turbines are produced and protected according to the following corrosion classes: Outside fittings and sensors are corrosion protected to class C3. Inside surfaces, directly exposed to outside air, e.g. inside nose cone and transformer housing are corrosion protected to class C3. Inside surfaces, not directly exposed to outside air, e.g. component inside the nacelle, are corrosion protected to class C3. If supplied by Vestas, towers are available in different corrosion protection classes. Standard Vestas towers are protected to class C4 on outside surfaces and C3 in- Page: 16 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. side. Foundations are classified according to ISO Standard 12944-2, corrosion class IM3. Customer supplied towers must meet the above requirements. 8.3 Grid Connection The turbine can be connected to a High-voltage grid at a range of 6-34.5 kv, where 36 kv (U m ) is the highest equipment voltage. The electrical grid Highvoltage cable connection is made at the tower base. The low-voltage/high-voltage transformer must be special-ordered to correspond to the desired grid voltage. At the turbine ordering stage, Vestas will need precise information about the interconnecting grid voltage so that the low voltage/high voltage transformer's nominal voltage and winding connection can be correctly specified. Winding connections in both Y- and Y-Y (low voltage/high voltage) configurations are available. As an option, Vestas can also provide a High voltage switch gear installation to isolate the turbine from the interconnecting grid. The following ranges are requirements for nominal High-voltage grid operating parameters: a) within +5/-5% of nominal voltage, and b) within +2/-3 Hz of nominal frequency. NOTE: GRID FREQUENCY FLUCTUATIONS OF AN INTERMITTENT OR RAPID NATURE CAN CAUSE SERIOUS TURBINE DAMAGE AND SHOULD BE MINIMIZED. Averaged over the wind turbine s lifetime, grid drop-out (loss of grid power) is to occur no more than once a week (e.g. maximum of 52 occurrences within a year). The grounding system must be designed (by others) in accordance with the local soil conditions. The resistance to neutral earth must be according to the requirements of the local authorities. Vestas requires that the electrical ground connection has a maximum resistance of 10 Ω. Harmonics and Capacitors for Power Factor Correction The 5th and 7th harmonics are sinusoidal voltages with frequencies of 300 Hz and 420 Hz, respectively. Harmonics are caused by different equipment (e.g. welding machines, converters and drives) connected to the same power supply systems as the wind turbine. Harmonics in power supply system may cause overload conditions that could lead to a reduction in the lifetime of the power factor correction capacitors. The turbine is equipped with reactors to reduce the harmonic load at the capacitors. The power factor correction system is designed to operate at a harmonic spectrum according to the following European and American standards: VDE 0160, IEEE 519, IEC 1000-2-2 and EN 50160. Page: 17 of 18

Item no.: 944411.R7 Date: 2005-05-12 Class: I General Specification V80-1.8 MW OptiSlip 60Hz Wind Turbine Type: Gen. spec. 9. General Reservations, Notes and Disclaimers All data are valid at sea level (ρ=1.225 kg/m 3 ). Machine de-rating may be necessary at other altitudes. Periodic operational disturbances and generator power de-rating may be caused by combination of high winds, low voltage or high temperature. Vestas recommends that the electrical grid be as close to nominal as possible with little variation in frequency. A certain time allowance for turbine warm-up must be expected following grid dropout and/or periods of very low ambient temperature. If the wind turbine is sited at elevations greater than 1000 m (3300 ft) above sea level, a higher than usual temperature rise may occur in electrical components. In such cases, a periodic power reduction from rated electrical output may occur. This may occur even when the ambient temperature remains within specified limits. Furthermore, sites situated at greater than 1000 m (3300 ft.) above sea level usually experience an increased risk of icing in most climates. Because of continuous development and product upgrade, Vestas reserves the right to change or alter these specifications at any time. 10. Performance Note THE PERFORMANCE OF THE VESTAS V80-1.8 MW WIND TURBINES CAN AND WILL VARY DEPENDING ON NUMEROUS VARIABLES, MANY OF WHICH ARE CONSIDERED AS PART OF THE PERFORMANCE MEASUREMENT STANDARD SET FORTH IN THE GENERAL SPECIFICATIONS. MANY OF THESE VARIABLES INCLUDING, BUT NOT LIMITED TO, SITE LOCATION, INSTALLATION, TURBINE CONDITION, TURBINE MAINTENANCE AND ENVIRONMENTAL/CLIMATIC CONDITIONS ARE BEYOND THE CONTROL OF VESTAS. UNLESS OTHERVISE CONTRACTUALLY AGREED IN WRITING, ALL PERFORMANCE SPECIFICATIONS SET FORTH IN THIS GENERAL SPECIFICATION INCLUDING, BUT NOT LIMITED TO, POWER CURVES, ANNUAL PRODUCTIONS AND NOISE EMISSIONS SHOULD BE USED FOR GUIDEANCE ONLY, AND NOT AS A PREDICTOR OR GUARANTEE OF FUTURE PERFORMANCE. FOR ADDITIONAL INFORMATION REGARDING THE INSTALLATION, MAINTENANCE AND PERFORMANCE OF THE VESTAS V80 1.8MW WIND TURBINES, PLEASE CONTACT VESTAS DIRECTLY. Page: 18 of 18

Item no. 952440.R0 - Class 1 Acoustic Noise Measurement Final Report V80 1.8 MW 60HZ Based on Power Performance Test Report for the Vestas V80 in Pincher Creek, Alberta, Canada, Vestas 1002, Global Energy Concepts, Kirkland, Washington, 21 January 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine in Tiverton, Ontario, Canada Vestas4002 CONFIDENTIAL February 11, 2003 Prepared for: Vestas Wind Systems A/S Smed Sørensens Vej 5 DK-6950 Ringkøbing Denmark Prepared by: Global Energy Concepts, LLC 5729 Lakeview Drive NE, Suite 100 Kirkland, Washington 98033 Phone: (425) 822-9008 Fax: (425) 822-9022 www.globalenergyconcepts.com

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Table of Contents 1. Introduction... 1 1.1 Scope... 1 1.2 Background... 1 1.3 References... 1 1.4 Turbine Description... 1 1.5 Site Description... 2 1.6 Site Conditions... 4 2. Technical Approach... 4 2.1 Test Instrumentation... 4 2.2 Data Reduction Methodology... 8 2.2.1 Data Selection... 9 2.2.2 Wind Speed Correction... 9 2.2.3 A-Weighted Sound Power Level... 10 2.2.4 A-Weighted One-Third Octave Band Levels... 10 2.2.5 Tonal Analysis... 11 2.3 Uncertainty Analysis... 11 2.3.1 A-Weighted Apparent Sound Power Level... 11 2.3.2 One-Third Octave Spectra... 13 2.3.3 Tonality... 13 3. Deviations... 13 4. Results... 14 4.1 Collected Data... 14 4.2 Results... 15 4.2.1 Sound Power Level and Sound Pressure Level... 15 4.2.2 A-Weighted One-Third Octave and Tonal Analysis... 19 Appendix A Power Curve Used for Wind Speed Calculation Appendix B Site Photos Appendix C Instrumentation Calibrations Global Energy Concepts, LLC ii February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 List of Figures Figure 1-1. Test Site Topography...3 Figure 2-1. Met Tower Top Instrumentation Elevation View from Wind Turbine...5 Figure 2-2. Met Tower Top Instrumentation Plan View...6 Figure 4-1. Collected Data...14 Figure 4-2. A-Weighted, Background Corrected, Apparent Sound Power Level Versus Standardized Wind Speed...15 Figure 4-3. A-Weighted Sound Pressure Levels, Binned Average Turbine Operating and Background Measurements Versus Standardized Wind Speed...17 Figure 4-4. A-Weighted Sound Pressure Levels, Turbine Operating and Background Measurements Versus Standardized Wind Speed...17 Figure 4-5. A-Weighted Sound Pressure Levels, Turbine Operating and Background Measurements Versus Measured Wind Speed at 10-m Height...18 Figure 4-6. A-Weighted Sound Pressure Levels, Turbine Operating Versus Measured Electrical Power Not Corrected for Background Noise...18 Figure 4-7. A-Weighted One-Third Octave Spectra, Background and Operating, 6 m/s Standardized Wind Speed...20 Figure 4-8. A-Weighted One-Third Octave Spectra, Background and Operating, 7 m/s Standardized Wind Speed...21 Figure 4-9. A-Weighted One-Third Octave Spectra, Background and Operating, 8 m/s Standardized Wind Speed...22 Figure 4-10. A-Weighted One-Third Octave Spectra, Background and Operating, 9 m/s Standardized Wind Speed...23 Figure 4-11. A-Weighted One-Third Octave Spectra, Background and Operating, 10 m/s Standardized Wind Speed...24 Figure 4-12. Typical Energy Averaged Spectrum from 0 Hz to 120 Hz...25 Figure 4-13. Possible Tone Criteria: Tone 1...25 Figure 4-14. Typical 20 to 120 Hz 10-Second Energy Averaged Spectra with Local Max Identified as Tone 1...26 Figure 4-15. A-Weighted Spectra in Tone 1 Critical Band...26 Figure 4-16. Typical 456.3 to 571.9 Hz 10-Second Energy Averaged Spectra with Local Max Identified as Tone 2...27 Global Energy Concepts, LLC iii February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 List of Tables Table 1-1. Turbine Description...2 Table 1-2. Turbine and Turbine Component Identification...2 Table 1-3. Meteorological Conditions During the Test Period...4 Table 2-1. Test Instrumentation...7 Table 2-2. Instrument Calibrations...8 Table 2-3. Recorded Data...9 Table 2-4. Variables for Standardizing Wind Speed...10 Table 2-5. Type B Uncertainty Components...12 Table 2-6. Overall Uncertainty Components...13 Table 4-1. Turbine Description...14 Table 4-2. A-Weighted, Background Corrected, Measured Apparent Sound Power Level...16 Table 4-3. A-Weighted Continuous Sound Pressure Level...16 Table 4-4. A-Weighted One-Third Octave Sound Pressure Levels for 6 m/s Standardized Wind Speed, Corrected for Background Noise...20 Table 4-5. A-Weighted One-Third Octave Sound Pressure Levels for 7 m/s Standardized Wind Speed, Corrected for Background Noise...21 Table 4-6. A-Weighted One-Third Octave Sound Pressure Levels for 8 m/s Standardized Wind Speed, Corrected for Background Noise...22 Table 4-7. A-Weighted One-Third Octave Sound Pressure Levels for 9 m/s Standardized Wind Speed, Corrected for Background Noise...23 Table 4-8. A-Weighted One-Third Octave Sound Pressure Levels for 10 m/s Standardized Wind Speed, Corrected for Background Noise...24 Table 4-9. Tonality and Tonal Audibility Results...27 Table 4-10. Tonal Analysis Results for 6 m/s Standardized Wind Speed, V S...28 Table 4-11. Tonal Analysis Results for 7 m/s Standardized Wind Speed, V S...28 Table 4-12. Tonal Analysis Results for 8 m/s Standardized Wind Speed, V S...28 Table 4-13. Tonal Analysis Results for 9 m/s Standardized Wind Speed, V S...29 Table 4-14. Tonal Analysis Results for 10 m/s Standardized Wind Speed, V S...29 Global Energy Concepts, LLC iv February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 1. Introduction 1.1 Scope This report presents the results of acoustic noise measurements conducted on one Vestas V80 wind turbine located in the HuronWind wind farm near Tiverton, Ontario, Canada. The turbine under measurement is designated number 4, and is one of five V80s and one Tacke 600 kw machine that make up the wind farm. The acoustic measurement was conducted to document acoustic noise emissions from the wind turbine in accordance with the IEC acoustic noise measurement standard [1]. The measurement was conducted on 22 November 2002. This report meets the requirements of the IEC standard and covers the methodology, equipment, and the results of the acoustic noise measurement. 1.2 Background This report is the second acoustic emissions measurement report published by GEC for turbine number 4 in the HuronWind wind farm near Tiverton, Ontario. The first report [2] was published January 23, 2003. Both reports cover the analysis of the same measured acoustic data; however, each one uses a different power curve to determine the wind speed. The power curve used in this report was measured from the same type of turbine, although with different controller parameter settings, than those in use during the acoustic measurement [3]. Comparing the two acoustic emissions reports allows the general comparison of the noise emissions and wind speed relationship for two different controller parameter settings. However, this report does not take into account possible noise emission differences caused by the different controller parameter settings; these can only be characterized by a new acoustic measurement. Additional uncertainty was assigned to the calculated sound power level values reported herein to accommodate this limitation. 1.3 References 1. Wind Turbine Generator Systems, Part 11: Acoustic Noise Measurement Technique Ed. 2, IEC 88/166/FDIS, Project 61400-11, International Electrotechnical Commission, Netherlands, 2002. 2. Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine in Tiverton Ontario, Canada, Vestas4001A, Global Energy Concepts, Kirkland, Washington, January 23, 2003. 3. Power Performance Test Report for the Vestas V80 in Pincher Creek, Alberta, Canada, Vestas1002, Global Energy Concepts, Kirkland, Washington, 21 January 2003. 4. General Specification, V80 1.8 MW, 60 Hz, OptiSlip Wind Turbine, Item No. 944411.R3 Class 1, Vestas, Denmark, 28 May 2002. 1.4 Turbine Description The V80 wind turbine is an upwind, 3 bladed, active yaw turbine incorporating full-span pitch control and constant-speed operation. Table 1-1 lists general details of the V80 turbine as noted in the General Specification [4]. Table 1-2 lists the serial numbers of the turbine and significant components. Global Energy Concepts, LLC 1 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Item Table 1-1. Turbine Description IEC Class 1 Grid Frequency 60 Hz Value Special Features OptiSlip and OptiTip [4] Rated Power Rotor Diameter Rotor Speed Generator Speed Power Regulation Shaft Tilt Hub Height Distance from Rotor Center to Tower Center Line Tower Type Cut-in Wind Speed Rated Wind Speed Cut-out Wind Speed Generator Voltage Power Factor 1800 kw 80 m 16.8 rpm 1872 rpm Pitch control 6 degrees 80 m 4.5 m Conical tubular steel 4 m/s 15 m/s 25 m/s 690 VAC 0.999 at rated power, compensated Table 1-2. Turbine and Turbine Component Identification Item Manufacturer/Model Identification Number Turbine Vestas V80 15411 Blades Vestas 40020, 40031, 40037 Gearbox Hansen 021R0EA 304622 Generator Leroy Somer 760275 00NE05 Controller Version Vestas Not Available 1.5 Site Description The wind farm is located on agricultural land approximately 7 km northwest of the town of Tiverton, Ontario, Canada, at an elevation of approximately 233 m. The latitude and longitude coordinates for the Global Energy Concepts, LLC 2 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 turbine under measurement are 44.3154 N by 81.5427 W. Figure 1-1 shows the site layout and topography of the wind farm and surrounding areas. Turbines 2 through 6 are Vestas V80 machines. Turbine 1 is a 600 kw Tacke unit. The terrain within the wind farm is very flat. Grasses and dry underbrush characterize the vegetation growing on the wind farm. The surrounding terrain is gently rolling to the north, east and south with very little mean elevation change. A 40-m bluff is less than 200 m northwest of the western turbine row. Relatively flat terrain exists from the bottom of the bluff to the shore of Lake Huron (elevation of 177 m) approximately 3 km to the northwest. Woods occupy land to the north of the wind farm. These deciduous trees are approximately 15 m high and are at a distance of about 550 m from the turbine under measurement. As can be seen on Figure 1-1 and in the site photos in Appendix B, the parked wind turbines numbered 5 and 3, as well as the aforementioned woods, were upwind of Turbine 4 during the acoustic noise measurement. The prevailing direction for the wind site ranges seasonally from northeast to southwest. 1 km Figure 1-1. Test Site Topography Global Energy Concepts, LLC 3 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 1.6 Site Conditions The Ontario test site was subject to a range of environmental conditions during the test period as described in Table 1-3. The minimum and maximum values are based on the 1-second sampling, except in the case of the air density, where they are based on the 10-minute averages. Acoustic measurements were not made during periods of precipitation. Table 1-3. Meteorological Conditions During the Test Period Variable Average Minimum Maximum 10-m Height Measured Wind Speed, m/s 5.1 2.3 8.4 Air Pressure, hpa 984 984 985 Air Temperature, C -0.8-1.3 0.1 Air Density, kg/m 3 * 1.260 1.262 1.256 * Calculated from temperature and pressure according to the test standard [1]. 2. Technical Approach 2.1 Test Instrumentation The acoustic emissions testing was conducted in accordance with the IEC standard. The Standard requires that for noise measurements when the turbine is operating, wind speed is determined either by measuring the electrical output and determining wind speed using a representative power curve or from direct measurement with an anemometer. The former technique is preferred and was used for this test. For background noise measurements, measuring wind speed with an anemometer is required. The wind speed and wind direction measurements were made using sensors mounted on a meteorological mast 2.0 diameters (160 m) north (5 True) of the wind turbine. The wind speed and wind direction sensors were mounted 10 m above ground level on a horizontal tube 0.5 m long projecting upwind of the met mast. The wind speed and wind direction sensors were mounted so they did not interfere with each other. A temperature sensor and radiation shield were mounted 9 m above the ground on the met mast. See Figures 2-1 and 2-2 for sketches of the instrument installation at the top of the meteorology mast. Barometric pressure measurements were made using hand-held sensors at ground level at least every two hours during acoustic noise measurements. The turbine power signal was obtained from a Norma power analyzer which in conjunction with current transducers measures the electrical power output from the turbine. The current transducers were mounted in the base of the turbine on the high-voltage cable. The voltage taps were taken from the turbine controller at the 690-V level. Accounting for the voltage difference and the current transducer s scale, the Norma was programmed to generate a power signal from 0 to 5 V that corresponded to -200 to 2000 kw. Two microphones were used during the measurement. These microphones were located 15 east and 15 west of a position downwind of the turbine directly in line with both the turbine and met mast. The standard requires that in order for a measurement to be valid, the microphone must be located within 15 Global Energy Concepts, LLC 4 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 of the 1-minute average wind direction. By positioning the microphones in this configuration and selecting one valid microphone based on wind direction, a 60 total valid wind direction sector was achieved. The microphones were each mounted on a round 1.0-m diameter acoustically hard sound board made from plywood 12 mm thick. Each sound board was placed 120 m from the center of the wind turbine tower at approximately the same elevation. Figure 2-2 shows the layout of the test site. The microphone power supply and measurement system were located in a van near the met mast. Microphone B was located in a fallow agricultural field covered by bare dirt and patchy short grass. Microphone A was located on a dirt road with some short grass and dry underbrush several meters away. Table 2-1 summarizes the instrumentation. Table 2-2 provides the calibration information. The instrument calibrations are found in Appendix C. WIND VANE ANEMOMETER TEMPERATURE SENSOR 10 m 10.2 m 9 m GROUND Figure 2-1. Met Tower Top Instrumentation Elevation View from Wind Turbine Global Energy Concepts, LLC 5 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 ANEMOMETER AND WIND DIRECTION SENSORS N 0.5 m MET MAST 50 TEMPERATURE SENSOR 5 DEG TRUE WIND TURBINE UNDER MEASUREMENT 180 m 120 m TO TOWER C L 124.5 TO ROTOR HUB CENTER 120 m TO TOWER C L 124.5 TO ROTOR HUB CENTER MICROPHONE A MICROPHONE B 15 30 Figure 2-2. Met Tower Top Instrumentation Plan View Global Energy Concepts, LLC 6 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Table 2-1. Test Instrumentation Item Manufacturer & Model Data Acquisition System B&B Electronics SDA 23212 Real Time Analyzer Larson Davis 2900 DAT Player/Recorder Teac RD 135T Microphone A, B Larson Davis 2559 Preamplifier A, B Larson Davis 900B Windscreen A, B Larson Davis WS-1 Sound Board A, B Fabricated on site Acoustic Calibrator Larson Davis CA250 Wind Speed Davis Instruments TWR-3 Wind Direction Davis Instruments TWR-3 Barometric Pressure Nike Ascent Compass Air Temperature Pacer Industries HTA4200 Air Temperature Radiation Shield R.M. Young 41002 Power Transducer Norma D6000 Global Energy Concepts, LLC 7 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Item Table 2-2. Instrument Calibrations Serial Number Data Acquisition System N/A N/A Calibration By / Date Real Time Analyzer 227 West Caldwell Calibration Laboratories on 28 December 2000 DAT Player/Recorder 723752 West Caldwell Calibration Laboratories on 2 January 2001 Microphone A 1810 West Caldwell Calibration Laboratories on 29 December 2000 Microphone B 1844 West Caldwell Calibration Laboratories on 29 December 2000 Preamplifier A 3991 West Caldwell Calibration Laboratories on 29 December 2000 Preamplifier B 1682 West Caldwell Calibration Laboratories on 29 December 2000 Windscreen A, B N/A N/A Sound Board A, B N/A N/A Acoustic Calibrator 1983 West Caldwell Calibration Laboratories on 17 July 2002 Wind Speed 91219068 Davis Instruments on 12 December 2002 Wind Direction 91219068 Davis Instruments on 12 December 2002 Barometric Pressure 054442 N/A Air Temperature Pacer Industries Inc. on 22 December 2000 Air Temperature N/A N/A Radiation Shield Power Transducer K2 48 749 00 AREPA Test & Kalibrering A/S on 15 November 2002 2.2 Data Reduction Methodology The following sections describe the general methodology used to assemble the test data for evaluation. The data acquisition system measured and recorded sound pressure, meteorological and turbine power signals as well as calculated 1-minute averages of these values and 1-minute energy averaged one-third octave sound pressure levels from 0 to 10,000 Hz. These raw and calculated data were automatically imported into a spreadsheet. Data available in the files included the fields described in Table 2-3. Acoustic signals were also recorded on DAT in real time. The tonality analysis was performed with the dynamic signal analyzer on the recorded sound pressure level data, after the field measurement was completed. Global Energy Concepts, LLC 8 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Table 2-3. Recorded Data Signal Logged Measurement Units Date and Time Time at end of sample period Julian day 24 hour clock Wind Speed Average, Min, Max m/s Wind Direction Average, Min, Max Degrees relative to wind turbine Air Temperature Average, Min, Max C Barometric Pressure Instantaneous reading hpa Turbine Output Power Average, Min, Max kw Sound Pressure Level One-Third Octave Sound Pressure Level Scaled signal representing time series sound pressure Scaled signal representing time series sound pressure binned into one-third octave db db 2.2.1 Data Selection Data corresponding to the following circumstances were removed from the valid data set: 1. Wind direction was outside the valid measurement sector of 335 to 35 relative to true north. 2. Interrupting noise sources such as a passing vehicle, insect or airplane that showed influence on the acoustic measurement. 3. Sound pressure level signal overload of real time analyzer. Some overloads occurred from lowfrequency noise in order to maximize system dynamic range. The valid microphone was selected according to the following criteria:: 1. The sound pressure level from Microphone A was used if the wind direction was between 5 and 35. 2. The sound pressure level from Microphone B was used if the wind direction was between 335 and 35. 2.2.2 Wind Speed Correction Consistent with the standard, for turbine operating acoustic measurements, the wind speed at sea level reference conditions at 10-m height with 0.05-m roughness length (V S ) was calculated using the 1-minute average measured electrical power and a measured sea level density power curve corrected for the reference conditions using Equation 1. Table 2-4 defines the variables for Equation 1. The power curve used to determine V S is included as Appendix A. This curve is the sea level adjusted measured power curve published in the power performance test report [3], dated 24 December 2002, for the GEC conducted power performance test in accordance with IEC 61400-12 on a similar IEC Class I V80 near Pincher Creek, Alberta, Canada. Global Energy Concepts, LLC 9 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 zref H ln ln z oref zo Vs = Vz Equation 1 H z ln ln zoref zo Table 2-4. Variables for Standardizing Wind Speed Parameter Description Value Units V s Corrected wind speed N/A m/s V z Wind speed measured at anemometer height z N/A m/s z oref Reference roughness length of 0.05 m 0.05 m z o Roughness length 0.05 m H Rotor center height 80 m z ref Reference height 10 m 10 m z Anemometer height (turbine rotor) 80 m For background noise measurements, turbine power is not available for determining V S and for noise measurements when the turbine power is greater than 95% of rated power, calculating wind speed from power output is not accurate. Therefore, according to the standard, a correction factor for measured wind speed (standardized for sea level air density) was used to determine the standardized wind speed for background measurements and periods when the power exceeded 95% of rated power. This factor, Ê, is the average quotient of V S as calculated from power and measured 10 m-height wind speed corrected for sea level air density during periods of valid turbine operating acoustic measurements. For this measurement period, Ê was calculated as 1.58. Wind speed for background noise measurements and periods when the power exceeded 95% of rated power, was then defined as the product of the measured wind speed corrected for sea level density and Ê. 2.2.3 A-Weighted Sound Power Level The corrected standardized wind speed, V S, data were binned into bin widths of 0.5 m/s. The measured turbine operating sound pressure levels were averaged in each bin to determine the valid reference position sound pressure level, L Aeq, at each integer V S (6, 7, 8, 9, 10 m/s). A linear regression analysis was performed on the measured background noise data. This analysis yields the background noise level at each integer V S, which is used to correct the turbine operating data for background noise. 2.2.4 A-Weighted One-Third Octave Band Levels The one-third octave band sound pressure levels of the noise signal at the microphone were obtained using the spectrum analyzer concurrent with the 1-minute sound pressure level calculations. As in the L Aeq analysis, the turbine operating data were corrected for background noise. Only valid acoustic data were used for one-third octave analyses. Global Energy Concepts, LLC 10 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 2.2.5 Tonal Analysis To analyze the tonality of the turbine, valid noise data from the microphone were played back from the DAT recorder to the signal analyzer. The signal analyzer was set to perform Fast Fourier Transforms (FFTs) using a Hanning window in the time domain and 1600 lines resolution. Consistent with the standard, 12 10-second turbine operating energy averaged narrowband spectra between 0 and 1500 Hz and then 1500 to 5000 Hz were analyzed with a frequency resolution of 3.1 Hz. These spectra were further narrowed in order to compare any suspected tones with the masking level in the tone s critical band. One 120-second background noise spectra is analyzed for each integer V S and used to correct the operating spectra. Only valid acoustic data were used for tonal analyses. Each line in the identified tone s critical band is then classified according to the following criteria: 1. Lines are classified as masking if their RMS-averaged levels are less than 6 db above the L 70% sound pressure level. The L 70% sound pressure level is the energy average of the 70% of spectral lines in the critical band with the lowest levels. 2. Lines are classified as tones if their RMS-averaged levels are more than 6 db above the L pn,avg sound pressure level. The L pn,avg sound pressure level is the energy average of the spectral lines classified as masking. 3. Where there are several adjacent lines classified as tones, the line having the greatest level is identified. Adjacent lines are then only classified as tones if their levels are within 10 db of the highest level. 4. Lines are classified as neither tones nor masking if their RMS-averaged levels are: more than 6 db above the L 70% sound pressure level and less than 6 db above the L pn,avg sound pressure level, or represent a portion of an increasing or decreasing non-tonal trend in an adjacent band. The wind turbine noise tonality and tonal audibility are then calculated from the processed and categorized narrow band spectra. 2.3 Uncertainty Analysis 2.3.1 A-Weighted Apparent Sound Power Level The type A uncertainty for the apparent sound power level, L WA, is the standard error of the estimated A-weighted sound pressure level, L Aeq, at each integer V S. This is found from the linear regression analysis. 2 Σ( y yest ) U A = Equation 2 N 2 Where: U A = Type A uncertainty for apparent sound power level, y = measured sound pressure level, y est = estimated sound pressure level using linear regression, N = number of measurements used in the linear regression. The type A apparent sound power level uncertainty analysis resulted in a calculated uncertainty value, U A, of 0.3 db. This value was calculated using 51 pairs of data at integer V S values of 6, 7 and 8 m/s. Global Energy Concepts, LLC 11 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 The type B uncertainty is calculated using Equation 3. The type B components are listed in Table 2-5. Table 2-5. Type B Uncertainty Components Parameter Description Value Units Source U B Type B uncertainty for apparent sound power level 0.9 db Calculation U B1 Calibration of the instruments 0.2 db Calibrator calibration U B2 Tolerances on the measurement chain 0.2 db Estimate U B3 Sound board 0.3 db Estimate U B4 Distance from microphone to hub 0.1 db Estimate U B5 Acoustic impedance of air 0.1 db Estimate U B6 Turbulence 0.3 db Estimate U B7 Wind speed, measured and derived from power 0.6 db U B8 Wind direction 0.3 db Controller setting different between power curve measurement and acoustic measurement, Anemometer calibration. Sensor calibration and mounting estimate U B9 Background correction 0.1 db Applied background correction B 2 B1 2 B2 2 B3 2 B4 2 B5 2 B6 U = U + U + U + U + U + U + U + U + U Equation 3 2 B7 2 B8 2 B9 Type A and B uncertainties are combined into one standard uncertainty by Equation 4. The results are listed in Table 2-6. C 2 A 2 B U = U + U Equation 4 Where: U C = Overall standard uncertainty for apparent sound power level. Global Energy Concepts, LLC 12 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Table 2-6. Overall Uncertainty Components Parameter Description Value Units U C U A U B Overall standard uncertainty for apparent sound power level Type A uncertainty for apparent sound power level Type B uncertainty for apparent sound power level 1.0 db 0.4 db 0.9 db 2.3.2 One-Third Octave Spectra For the third octave band, U A for each band is the standard error on the averaged band level, computed as the standard deviation divided by (N-1) 1/2, where N is the number of measured spectra. The value for U B3 is considered much larger than for L WA, and is estimated to be 1.7 db for one-third octave bands. 2.3.3 Tonality For tonality, U A for each tone is the standard error on the averaged maximum tone level. The values of U B1, U B4, and U B6 can be estimated to be smaller than for L WA. The value of U B3 is estimated to be 1.7 db. 3. Deviations 1. The turbine operating sound pressure level at each integer wind speed was determined as the wind speed binned average value (0.5 m/s bin width) at that integer wind speed. This was used in lieu of the specified second-order regression that was judged to be a poor curve fit for this particular data set. For the same reason, a linear regression was used to determine the background sound pressure level at each integer wind speed instead of the specified second-order regression. 2. The specified procedure to determine if local maxima are possible tones was not used for spectra from 20 to 120 Hz in the narrowband analysis. The substitute method used is explained in Section 4.2.2. 3. The calibration for the anemometer used for direct wind speed measurements was overdue during the test. The use of an in situ correlation between derived wind speed from power and measured wind speed eliminates the possible inaccuracy of using an out-of-calibration anemometer. The anemometer was post-test calibrated to ensure it met the manufacturer s specifications. 4. The power curve used to determine wind speed for turbine operating measurements was measured on the same type of wind turbine although with different controller parameter settings than those in use during the acoustic measurement. Additional uncertainty was assigned to the calculated sound power level values reported herein to accommodate this limitation. Global Energy Concepts, LLC 13 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 4. Results 4.1 Collected Data Table 4-1 details the amount of data collected and the data removed for the specified reasons. Figure 4-1 displays the distribution of the collected data. Table 4-1. Turbine Description Item Number of 1-minute points Total collected data 321 Removed for invalid wind direction, turbine faults/offline, etc. 71 Valid data used, turbine operating 148 Valid data used, background 102 60 50 Number of Samples 40 30 20 10 0 5 6 7 8 9 10 11 13 5 6 7 8 9 10 11 Background Noise Vs (m/s) WT Noise Figure 4-1. Collected Data Global Energy Concepts, LLC 14 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 4.2 Results 4.2.1 Sound Power Level and Sound Pressure Level As described in Section 2, data were processed into a set of valid data for use in the final results. The background corrected measured apparent sound power of the wind turbine is displayed graphically in Figure 4-2 and in tabular format in Table 4-2. Table 4-3 and Figures 4-3 and 4-4 display the sound pressure levels for both turbine operating and background noise measurements. Figure 4-5 shows the turbine operating sound pressure levels versus the measured wind speed at 10-m height. Figure 4-6 shows the turbine operating sound pressure levels versus turbine electrical power. 105.0 104.5 104.0 103.5 LWA, db 103.0 102.5 102.0 101.5 101.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 V S (m/s) Figure 4-2. A-Weighted, Background Corrected, Apparent Sound Power Level Versus Standardized Wind Speed Global Energy Concepts, LLC 15 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Table 4-2. A-Weighted, Background Corrected, Measured Apparent Sound Power Level V S (m/s) L WA, db 6.0 102.6 6.5 103.0 7.0 103.4 7.5 103.6 8.0 103.5 8.5 103.2 9.0 103.2 9.5 102.9 10.0 N/A V S (m/s) Table 4-3. A-Weighted Continuous Sound Pressure Level L Aeq, Turbine Operating w/o Background Correction (db) No. of Data Points in Bin, Turbine Operating L Aeq, Background Noise (db) L Aeq,c, Background Corrected (db) 6.0 54.3 13 38.3 54.2 6.5 54.7 23 38.5 54.6 7.0 55.2 29 38.8 55.0 7.5 55.3 31 39.0 55.2 8.0 55.2 26 39.2 55.1 8.5 54.9 2 39.5 54.8 9.0 54.9 6 39.7 54.8 9.5 54.7 5 39.9 54.5 10.0 N/A 0 40.1 N/A Global Energy Concepts, LLC 16 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 60 55 50 Operating Background L Aeq,dB 45 40 35 y = 0.4584x + 35.56 30 4 5 6 7 8 9 10 11 12 13 14 V S (m/s) Figure 4-3. A-Weighted Sound Pressure Levels, Binned Average Turbine Operating and Background Measurements Versus Standardized Wind Speed 60 55 50 Operating Background L Aeq,dB 45 40 35 30 4 5 6 7 8 9 10 11 12 13 14 V S (m/s) Figure 4-4. A-Weighted Sound Pressure Levels, Turbine Operating and Background Measurements Versus Standardized Wind Speed Global Energy Concepts, LLC 17 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 60 55 50 Operating Background LAeq,dB 45 40 35 30 2 3 4 5 6 7 8 9 V measured, 10 m (m/s) Figure 4-5. A-Weighted Sound Pressure Levels, Turbine Operating and Background Measurements Versus Measured Wind Speed at 10-m Height 58 57 56 55 L Aeq, db 54 53 52 51 50 0 200 400 600 800 1000 1200 1400 1600 1800 Power (kw) Figure 4-6. A-Weighted Sound Pressure Levels, Turbine Operating Versus Measured Electrical Power Not Corrected for Background Noise Global Energy Concepts, LLC 18 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 4.2.2 A-Weighted One-Third Octave and Tonal Analysis Results of A-weighted one-third octave spectra analysis for integer standardized wind speeds, with background noise correction, are displayed in Tables 4-4 to 4-8 and Figures 4-7 to 4-11. Note that for integer wind speeds 6 and 10 m/s, the background noise influences the wind turbine noise above 6300 Hz. Above 6300 Hz, electrical noise from the long cable run is responsible for the higher reported background noise. As per the standard, the average frequency (523.4 Hz) for Tone 2 was used for determining audibility. Two intermittent tones were identified from the measured data and subsequently analyzed. Tone 1 is centered on 31.3 Hz and Tone 2 was located between 516 and 525 Hz. Neither tone was present in the majority of spectra analyzed nor could be audibly differentiated from the background noise by the test engineers. As shown in Figure 4-12, the magnitude of the measured frequency spectra generally decreases rapidly as frequency increases from zero Hz to about the frequency of Tone 1. The critical band used for the tonal analysis on Tone 1 was calculated according to the standard as 20 Hz to 120 Hz. This critical band includes some spectral lines with frequencies less than Tone 1 that are part of the aforementioned decreasing magnitude trend from the adjacent band. Some of these lines have magnitudes greater than 6 db above the average masking level of the critical band and thus would normally be classified as tones. However, these lines are not actually tones but are more accurately described as masking noise that is steeply sloped in the vicinity of 31.3 Hz. Therefore an alternative preliminary tone identification method was used to identify possible tones between 20 and 120 Hz. To determine if the local maxima at 31.3 Hz in each spectra was more than 6 db above the local masking level, an approximation of the masking level at 31.3 Hz was required. This approximated value was defined as the average of the sound pressure levels at 25 and 37.5 Hz. These two spectra represent the masking level trend in the region of Tone 1 but are not influenced by Tone 1. The local maximum was then classified as a possible tone if the sound pressure level of the peak was more than 6 db greater than the approximated masking level at 31.3 Hz. Figure 4-13 shows a sample of Tone 1 and the method used to determine if the local maximum is a possible tone. For the 31.3 Hz local maxima that passed the possible tone criteria, a detailed narrowband analysis of the tone was completed. Spectral lines at 25 Hz and below were classified as neither tones nor masking in these analyses. Figures 4-14 and 4-16 and Tables 4-9 to 4-14 show the results of the tonal analysis. Figure 4-15 shows the A-weighted spectra levels in the critical band for Tone 1. This graphic shows that Tone 1 is indistinguishable from the background noise when A-weighting is applied. This is consistent with the test engineers being unable to audibly distinguish the tone from the background noise during the measurement. Global Energy Concepts, LLC 19 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Table 4-4. A-Weighted One-Third Octave Sound Pressure Levels for 6 m/s Standardized Wind Speed, Corrected for Background Noise Frequency (Hz) Sound Pressure Level (db) Frequency (Hz) Sound Pressure Level (db) 12.5 1.0 400.0 44.4 16.0 6.3 500.0 45.0 20.0 11.6 630.0 44.7 25.0 16.3 800.0 43.9 31.5 25.7 1000.0 43.7 40.0 24.7 1250.0 42.9 50.0 27.9 1600.0 41.8 63.0 30.6 2000.0 40.1 80.0 33.4 2500.0 37.9 100.0 36.0 3150.0 35.1 125.0 38.3 4000.0 31.1 160.0 39.3 5000.0 25.1 200.0 40.4 6300.0 23.8 250.0 42.4 8000.0 N/A 315.0 44.5 10000.0 24.4 50 1/3 Octave Band Sound Pressure Level, db 45 40 35 30 25 20 15 10 5 0 WT Noise Background 12.5 20 31.5 50 80 125 200 315 500 800 Frequency (Hz) 1250 2000 3150 5000 8000 Figure 4-7. A-Weighted One-Third Octave Spectra, Background and Operating, 6 m/s Standardized Wind Speed Global Energy Concepts, LLC 20 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Table 4-5. A-Weighted One-Third Octave Sound Pressure Levels for 7 m/s Standardized Wind Speed, Corrected for Background Noise Frequency (Hz) Sound Pressure Level (db) Frequency (Hz) Sound Pressure Level (db) 12.5-1.1 400.0 45.0 16.0 5.4 500.0 45.5 20.0 10.1 630.0 44.9 25.0 16.1 800.0 44.1 31.5 25.9 1000.0 44.0 40.0 24.5 1250.0 43.5 50.0 28.2 1600.0 42.7 63.0 30.9 2000.0 41.0 80.0 34.1 2500.0 38.9 100.0 36.7 3150.0 36.3 125.0 39.0 4000.0 33.0 160.0 40.2 5000.0 28.6 200.0 41.2 6300.0 24.7 250.0 43.0 8000.0 23.7 315.0 45.1 10000.0 23.4 50 1/3 Octave Band Sound Pressure Level, db 45 40 35 30 25 20 15 10 5 WT Noise Background 0 12.5 20 31.5 50 80 125 200 315 500 Frequency (Hz) 800 1250 2000 3150 5000 8000 Figure 4-8. A-Weighted One-Third Octave Spectra, Background and Operating, 7 m/s Standardized Wind Speed Global Energy Concepts, LLC 21 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Table 4-6. A-Weighted One-Third Octave Sound Pressure Levels for 8 m/s Standardized Wind Speed, Corrected for Background Noise Frequency (Hz) Sound Pressure Level (db) Frequency (Hz) Sound Pressure Level (db) 12.5 0.9 400.0 45.1 16.0 6.6 500.0 45.4 20.0 11.5 630.0 45.0 25.0 14.9 800.0 44.0 31.5 23.2 1000.0 44.1 40.0 22.4 1250.0 43.5 50.0 26.3 1600.0 42.8 63.0 29.3 2000.0 41.5 80.0 33.5 2500.0 39.4 100.0 35.6 3150.0 36.7 125.0 38.5 4000.0 32.9 160.0 40.0 5000.0 27.7 200.0 41.3 6300.0 25.4 250.0 43.1 8000.0 26.0 315.0 45.0 10000.0 26.3 50 1/3 Octave Band Sound Pressure Level, db 45 40 35 30 25 20 15 10 5 WT Noise Background 0 12.5 20 31.5 50 80 125 200 315 500 Frequency (Hz) 800 1250 2000 3150 5000 8000 Figure 4-9. A-Weighted One-Third Octave Spectra, Background and Operating, 8 m/s Standardized Wind Speed Global Energy Concepts, LLC 22 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Table 4-7. A-Weighted One-Third Octave Sound Pressure Levels for 9 m/s Standardized Wind Speed, Corrected for Background Noise Frequency (Hz) Sound Pressure Level (db) Frequency (Hz) Sound Pressure Level (db) 12.5 3.8 400.0 44.4 16.0 8.9 500.0 45.1 20.0 13.5 630.0 45.0 25.0 17.9 800.0 44.3 31.5 24.1 1000.0 44.3 40.0 25.2 1250.0 43.5 50.0 28.2 1600.0 42.4 63.0 31.0 2000.0 40.8 80.0 34.1 2500.0 38.7 100.0 36.5 3150.0 35.9 125.0 38.5 4000.0 32.2 160.0 39.6 5000.0 27.5 200.0 40.4 6300.0 25.8 250.0 41.9 8000.0 26.5 315.0 44.0 10000.0 26.9 50 1/3 Octave Band Sound Pressure Level, db 45 40 35 30 25 20 15 10 5 WT Noise Background 0 12.5 20 31.5 50 80 125 200 315 500 Frequency (Hz) 800 1250 2000 3150 5000 8000 Figure 4-10. A-Weighted One-Third Octave Spectra, Background and Operating, 9 m/s Standardized Wind Speed Global Energy Concepts, LLC 23 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Table 4-8. A-Weighted One-Third Octave Sound Pressure Levels for 10 m/s Standardized Wind Speed, Corrected for Background Noise Frequency (Hz) Sound Pressure Level (db) Frequency (Hz) Sound Pressure Level (db) 12.5 1.3 400.0 43.8 16.0 6.8 500.0 44.7 20.0 10.9 630.0 44.9 25.0 15.0 800.0 44.3 31.5 23.3 1000.0 44.1 40.0 24.8 1250.0 43.2 50.0 28.3 1600.0 42.2 63.0 30.8 2000.0 40.6 80.0 34.1 2500.0 38.4 100.0 36.4 3150.0 35.4 125.0 38.4 4000.0 31.3 160.0 39.0 5000.0 25.4 200.0 39.6 6300.0 N/A 250.0 41.2 8000.0 N/A 315.0 43.1 10000.0 N/A 50 1/3 Octave Band Sound Pressure Level, db 45 40 35 30 25 20 15 10 5 WT Noise Background 0 12.5 20 31.5 50 80 125 200 315 500 Frequency (Hz) 800 1250 2000 3150 5000 8000 Figure 4-11. A-Weighted One-Third Octave Spectra, Background and Operating, 10 m/s Standardized Wind Speed Global Energy Concepts, LLC 24 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 90 85 80 75 70 db 65 60 55 50 45 40 0.0 12.5 25.0 37.5 50.0 62.5 Hz 75.0 87.5 100.0 112.5 Figure 4-12. Typical Energy Averaged Spectrum from 0 Hz to 120 Hz 65 63 61 Possible Tone if > 6 db 59 57 55 Local Masking Level Approximation 53 51 49 47 45 21.9 28.1 34.4 40.6 46.9 53.1 59.4 65.6 71.9 78.1 84.4 90.6 96.9 103.1 109.4 115.6 Hz Figure 4-13. Possible Tone Criteria: Tone 1 Global Energy Concepts, LLC 25 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 65 60 Neither Tone Masking L70% + 6 db L70% Lpn,avg + 6 db Lpt,max - 10 db 55 50 45 40 21.9 31.3 40.6 50.0 59.4 68.8 78.1 87.5 96.9 106.3 115.6 db Hz Figure 4-14. Typical 20 to 120 Hz 10-Second Energy Averaged Spectra with Local Max Identified as Tone 1 35 30 25 db 20 15 10 5 Neither Tone Masking L70% + 6 db L70% Lpn,avg + 6 db Lpt,max - 10 db 21.9 34.4 46.9 59.4 71.9 Hz 84.4 96.9 109.4 Figure 4-15. A-Weighted Spectra in Tone 1 Critical Band Global Energy Concepts, LLC 26 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 45 43 41 Neither Tone Masking L70% L70% + 6 db Lpn,avg + 6 db Lpt,max - 10 db 39 37 db 35 33 31 29 27 25 456.3 465.6 475.0 484.4 493.8 503.1 512.5 521.9 531.3 540.6 550.0 559.4 568.8 Hz Figure 4-16. Typical 456.3 to 571.9 Hz 10-Second Energy Averaged Spectra with Local Max Identified as Tone 2 Table 4-9. Tonality and Tonal Audibility Results Item Frequency (Hz) L (db) L a (db) 6 m/s, Tone 1 31.3 2.9 4.9 7 m/s, Tone 1 31.3-13.3-11.3 8 m/s, Tone 1 31.3 Influenced by background 9 m/s, Tone 1 31.3-13.3-11.3 10 m/s, Tone 1 31.3-13.3-11.3 6 m/s, Tone 2 523.4-11.7-9.4 7 m/s, Tone 2 523.4-10.7-8.3 8 m/s, Tone 2 523.4-11.7-9.4 9 m/s, Tone 2 523.4-9.8-7.4 10 m/s, Tone 2 523.4-7.5-5.1 Global Energy Concepts, LLC 27 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Table 4-10. Tonal Analysis Results for 6 m/s Standardized Wind Speed, V S 10-Sec Sample # L k (db) L k (db) Tone 1 Tone 2 1 3.6-14.1 2 4.6-14.1 3 3.9-14.1 4 4.9-14.1 5 3.4-14.1 6-13.3-14.1 7 2.8-14.1 8 4.4-14.1 9 3.6-14.1 10-13.3-14.1 11 2.2-14.1 12 2.4-14.1 Table 4-11. Tonal Analysis Results for 7 m/s Standardized Wind Speed, V S 10-Sec Sample # L k (db) L k (db) Tone 1 Tone 2 1-13.3-14.1 2-13.3-14.1 3-13.3-14.1 4-13.3-14.1 5-13.3-7.6 6-13.3-14.1 7-13.3-14.1 8-13.3-14.1 9-13.3-14.1 10-13.3-14.1 11-13.3-14.1 12-13.3-14.1 Table 4-12. Tonal Analysis Results for 8 m/s Standardized Wind Speed, V S 10-Sec Sample # L k (db) L k (db) Tone 1 Tone 2 1-13.3-14.1 2-13.3-14.1 3-13.3-14.1 Influenced by 4 Background -14.1 5-13.3-14.1 6-13.3-14.1 7-13.3-14.1 8-13.3-14.1 9-13.3-14.1 10-13.3-14.1 11-13.3-14.1 12-13.3-14.1 Global Energy Concepts, LLC 28 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Table 4-13. Tonal Analysis Results for 9 m/s Standardized Wind Speed, V S 10-Sec Sample # L k (db) L k (db) Tone 1 Tone 2 1-13.3-5.2 2-13.3-14.1 3-13.3-14.1 4-13.3-14.1 5-13.3-14.1 6-13.3-14.1 7-13.3-14.1 8-13.3-14.1 9-13.3-14.1 10-13.3-14.1 11-13.3-14.1 12-13.3-14.1 Table 4-14. Tonal Analysis Results for 10 m/s Standardized Wind Speed, V S 10-Sec Sample # L k (db) L k (db) Tone 1 Tone 2 1-13.3-14.1 2-13.3-14.1 3-13.3-14.1 4-13.3-14.1 5-13.3-5.3 6-13.3-5.9 7-13.3-9.4 8-13.3-7.0 9-13.3-14.1 10-13.3-14.1 11-13.3-14.1 12-13.3-9.4 Global Energy Concepts, LLC 29 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Appendix A Power Curve Used for Wind Speed Calibration [3] V80 Measured Electrical Power Output at 1.225 kg/m 3 Air Density Normalized Hub Height Wind Speed (m/s) Power Output (kw) 0.5-2.5 1.0 N/A 1.5-7.6 2.0-8.6 2.5-8.1 3.0-10.7 3.5-9.1 4.0-5.4 4.5 38.9 5.0 102.9 5.5 159.4 6.0 249.9 6.5 376.4 7.0 458.8 7.5 574.0 8.0 744.9 8.5 863.2 9.0 1016.3 9.5 1157.0 10.0 1347.5 10.5 1508.0 11.0 1638.3 11.5 1741.6 12.0 1771.0 12.5 1792.6 13.0 1798.3 13.5 1800.8 14.0 1801.9 14.5 1802.0 15.0 1802.3 15.5 1802.4 16.0 1802.2 16.5 1802.3 17.0 1802.2 17.5 1802.2 18.0 1802.3 18.5 1802.4 19.0 1802.4 19.5 1802.3 20.0 1802.3 20.5 1801.8 21.0 1801.9 21.5 1802.3 22.0 1801.9 22.5 1802.8 23.0 1802.0 Global Energy Concepts, LLC A-1 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Appendix B Site Photos Figure B-1. Wind Turbine Under Measurement and Met Tower Global Energy Concepts, LLC B-1 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Figure B-2. Wind Turbine Under Measurement and Microphone A Global Energy Concepts, LLC B-2 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Figure B-3. Wind Turbine Under Measurement and Microphone B Global Energy Concepts, LLC B-3 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Appendix C Instrumentation Calibrations Global Energy Concepts, LLC C-1 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Global Energy Concepts, LLC C-2 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Global Energy Concepts, LLC C-3 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Global Energy Concepts, LLC C-4 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Global Energy Concepts, LLC C-5 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Global Energy Concepts, LLC C-6 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Global Energy Concepts, LLC C-7 February 11, 2003

Acoustic Noise Measurement Report for the Vestas V80 Wind Turbine Tiverton, ON Confidential Vestas4002 Global Energy Concepts, LLC C-8 February 11, 2003