1. Description of and Rationale for Proposed Change

Transcription

1 Suite 500, 4342 Queen Street Niagara Falls, Ontario, Canada L2E 7J7 Tel Fax: Nick Colella 2 St. Clair Avenue West Floor 12A Toronto, ON M4V 1L5 Dear Mr. Colella: Subject: Cornwall Solar Project (MOE Reference Number V6NLX Proposed Project Changes and Report Amendments Cornwall Solar Inc. is planning to construct and operate the Cornwall Solar Project, located in the Township of South Glengarry. The application for a Renewable Energy Approval for this Project has been deemed complete and the Ministry of the Environment (MOE posted a Notice on the EBR on July 26, The application is currently within the 6-month technical review period. Cornwall Solar Inc. has commenced the detailed engineering process and is proposing several changes, in order to further reduce any potential noise impacts, to the Project, including revisions to the site layout and changes in the inverter and transformer models. The proposed Project changes will also optimize the layout and increase the efficiency of power generation and the constructability of the site, and decrease costs, without resulting in any incremental negative environmental effects. All proposed changes will be confined to the original Project location identified within the REA Application and the Project will continue to have a maximum capacity of 10 megawatt (MW AC. This letter describes the proposed changes, outlines the rationale for each proposed change (including designating the amendments as a Project Design Change, as prescribed in the MOE Technical Guide to Renewable Energy Approval Draft Chapter 10 (Making Changes to Renewable Energy Approval (REA Projects, provides the assessment of the potential for negative environmental effects and identifies the amendments to each of the supporting documents prepared for the REA application that are necessary to incorporate the proposed Project changes. 1. Description of and Rationale for Proposed Change The site layout, including solar panel, access road, inverter cluster and substation locations has been revised to take into consideration factors arising from detailed engineering review of the original site layout, including topography, optimization, efficiency and general constructability. The proposed revised site layout is shown in Figure 1.1. The original layout from the REA application is included in Appendix A for comparison. The changes associated with the revised layout and equipment changes include the following: H , Rev. 1

2 Altered internal access road and solar panel locations. Altered inverter cluster and main substation locations. SMA Sunny Central 500-HE 500 kw inverters will be used instead of Satcon Equinox 500-kW inverters. MV-HE-1000-US medium voltage, oil-filled transformers will be used at each inverter cluster to transform the voltage from the inverters to the intermediate level of 34.5-kV prior to distribution to the substation. The previous layout included a 1-MVA, 27.6-kV medium voltage transformer at each cluster. Enclosures will be used around each of the inverter clusters and barriers will be installed around four of the ten clusters to mitigate noise emissions and ensure MOE requirements are satisfied. Medium voltage transformers at each cluster will be outside the enclosure. The main substation transformer will be a 6.7/10MVA, ONAN/ONAF, 44/34.5KV (oil filled transformer. The transformer included in the original noise assessment study was a 10-MVA, ONAF, 44/27.6-kV transformer. The proposed fence location has not changed and remains as per the original application. Each of the proposed changes, including the rationale for each, is described in more detail in the following sections. 1.1 Altered Internal Access Road and Solar Panel Locations The original layout has a perimeter access road round the solar panel field and one central road running through the middle of the site in a north-south direction. As shown in Figure 1.1, the proposed revised road now runs within a loop through the central portion of the Project location. The proposed access road entrance from County Road 19 has shifted approximately 70 m west. The secondary emergency site entrance has been eliminated, through consultation with the County, to address concerns about two road entrances provided by the United Counties of Stormont, Dundas and Glengarry. The original road was approximately 2970 m long, while the new road is only 1570 m long; therefore, less granular material will be required and the road will cover less surface area. The revised road location maintains the functionality of the original road, providing access to the inverter clusters and the north end of the Project location, and ensures that emergency vehicles have a continuous loop to avoid turnaround requirements. The road also minimizes the amount of granular material, which also decreases the amount of less permeable ground surface (thereby providing positive impacts on stormwater runoff, and decreases the number of trucks required to deliver the granular material, resulting in positive impacts on traffic on local roads. Elimination of the perimeter road decreases the potential for effects on stormwater runoff as it leaves the Project location (with the exception of the north and south ends where the road continues borders the Project location. Therefore, overall, the revised internal access road location maintains the functionality of the original internal road network, while decreasing material requirements and potential environmental effects. Page 2

3 The solar panel locations have been slightly revised to accommodate the revised access road and inverter cluster locations, although the changes are very minor, with solar panels continuing to occupy the majority of the Project location. In order to accommodate the amendments listed above, solar panels are now proposed within a small area along the northern portion of the Project location where they were previously not identified in the original site plan. However, overall, the number of solar panels remains similar to the original proposal. The addition of panels, in this small northern portion, would not increase any environmental impacts and remain within the original Project REA study area. 1.2 Altered Inverter Cluster and Substation Locations Inverter cluster locations have been slightly revised to optimize the layout and to accommodate the proposed road alignment, since clusters are situated along the access road to minimize road requirements (see proposed layout in Figure 1.1. The site layout continues to have ten inverter clusters, each with two 500-kW inverters. The original site layout had the main substation location within the southeast corner of the Project location. The revised layout continues to have the substation within the southeast corner, although the layout has shifted slightly west, and the substation layout has been elongated. 1.3 Altered Inverter Models and Enclosure Specifications The original REA application included Satcon Equinox 500-kW inverters. However, due to supply considerations, the inverter model has been changed to the SMA Sunny Central 500-HE 500-kW inverter. The noise emissions of the revised inverter model have been considered in the revised Noise Assessment Study, contained under separate cover (note: the results indicate the layout is noise compliant in relation to the MOE requirements. The previous site layout utilized acoustic barriers to mitigate noise emissions from the inverter clusters, since the previous inverter model was suitable for outdoor use. However, with the change in inverter model, an enclosure is now proposed to protect the inverters from the elements and to mitigate sound emissions. As a result the installation of the acoustic barriers will only be required for the following inverter clusters: 1, 2, 3 and 10 (as shown in figure 1.1. Medium voltage transformers are outside the enclosure at each inverter cluster. 1.4 Altered Medium Voltage and Substation Transformer Models and Location Previously, the medium voltage transformer at each cluster was specified as a 27.6-kV transformer. However, the proposed design identifies each medium voltage transformer as a 34.5-kV transformer. The change to a larger medium voltage transformer decreases electrical loss during transmission from the inverter cluster to the main substation transformer, thereby increasing the overall amount of power delivered to the substation, and subsequently, to the electrical grid. The substation transformer model has also been changed to a 34.5-kV to 44-kV transformer, due to the change in medium voltage transformer. The noise results indicate the substation, with the installation of an acoustical noise barrier, is still in compliance with the MOE requirements. Page 3

4 2. Potential Negative Environmental Effects, Mitigation and Monitoring Requirements Nick Colella Table 2.1 outlines the potential negative environmental effects of the proposed Project changes on environmental components and any new mitigation and/or monitoring measures being proposed (where applicable. The potential for negative environmental effects as a result of the proposed Project changes is minimal, since all changes are proposed within the existing Project footprint and predominantly represent a shifting of Project components within this area. Table 2.1 Summary of Potential Negative Environmental Effects, Mitigation and Monitoring Associated with Proposed Changes Environmental Component Potential Negative Environmental Effects Natural Environment Components Air Quality No additional negative effect No additional mitigation Soil Quality No additional negative effect No additional mitigation Soil Quantity No additional negative effect No additional mitigation Groundwater No additional negative effect No additional mitigation Surface Water No additional negative effect No additional Quantity anticipated. Decreased length mitigation of road will decrease the amount of less permeable material on the Project location, resulting in less potential effect on stormwater runoff. Elimination of the perimeter access road will have less potential effect on stormwater runoff leaving the Project location, since runoff will not have to pass the access road throughout the majority of the Project location, thereby maintaining closer to existing runoff conditions. Surface Water No additional negative effect No additional Quality Aquatic Habitat and Biota Woodlands anticipated. No additional negative effect. Setback from the Woods Drain continues to be the same. No additional negative effect since no additional woodland clearing is necessary, as the revised project is contained within the original footprint. mitigation No additional mitigation No additional mitigation Woodland compensation already being implemented. Monitoring Requirements Page 4

5 Environmental Component Potential Negative Environmental Effects Wetlands No additional negative effect, No additional since no change in the footprint mitigation of the project and associated wetland setbacks. Wildlife Habitat No additional negative effect No additional since no additional vegetation mitigation removal is Decrease in access road length may result in minor increase in grassland habitat throughout the Project location, due to the vegetation that will be planted throughout the solar field. Wildlife No additional negative effect. No additional mitigation Socio-Economic Environmental Components Noise Noise Assessment Study has Enclosures have been confirmed that the revised layout specified along with and equipment models results in reduced number of decrease in noise levels at some acoustical barriers receptors and insignificant around the inverters, increases at other receptors (in which assist in compliance to the MOE ensuring equal or guidelines. lower noise emissions at receptors at many receptors and insignificant increases at other receptors. Public and Facility No additional negative effect. No additional Safety Change in Visual Landscape No additional negative effect, since visual screening continues to be proposed in the original locations to minimize the longterm visual disturbance of the facility on the landscape. mitigation No additional mitigation Property Values No additional negative effect. No additional mitigation Availability of No additional negative effect. No additional Resources mitigation Recreational Land No additional negative effect. No additional Use mitigation Infrastructure No additional negative effect. No additional mitigation Monitoring Requirements No monitoring No monitoring No monitoring No monitoring No monitoring Page 5

6 Environmental Component Traffic Archaeological and Heritage Resources Potential Negative Environmental Effects No additional negative effect since no increase in the overall amount of trucks accessing and leaving the site is anticipated as a result of the changes. No additional negative effect. The proposed changes remain within the original footprint assessed in the Archaeological Assessment included with the REA application. No additional mitigation No additional mitigation Monitoring Requirements No monitoring No monitoring The potential for effects on noise emissions was assessed in the revised Noise Assessment Study, contained under separate cover, since the substation transformer has moved and different model is planned, and inverter clusters have been moved and revised models are planned with enclosures and with acoustic barriers, where necessary to ensure compliance with MOE requirements. The report has concluded that noise levels at some receptors have either stayed the same or decreased as a result of the proposed Project changes, while at others, noise levels have increased insignificantly. The table in Appendix B summarizes the changes in noise levels at each receptor that have occurred between the previous version of the Noise Assessment Study and the current version prepared to address these proposed Project Changes. Overall, as shown in Appendix B, some receptors have decreased noise levels while other receptors have insignificant increases in noise levels. Insignificant increases include any increase < 2dBA or any increase greater than 2 dba where the resulting noise level remains <30 dba. Note that some receptors identified in the original report were deleted due to re-assessment as non-receptors using higher resolution satellite imagery and updated parcel data. The other proposed changes, including revised access roads and solar panel locations are not anticipated to have negative environmental effects other than those already assessed in the REA application. Existing mitigation and monitoring measures will continue to be implemented, as identified throughout the various REA supporting documents submitted with the application. Some positive effects may occur due to the decreased overall length of access road on the Project location, including decreased less permeable area, removal of access roads from the perimeter, allowing for more natural stormwater flow from the Project location, and less granular material and associated vehicle deliveries. 3. Summary of Revisions to REA Supporting Documents This section identifies the amendments to each of the supporting documents submitted with the original REA Application that are required to address the proposed Project changes. The supporting documents that are amended by this letter include Page 6

7 Project Description Report Construction Plan Report Design and Operations Report. As previously noted, the proposed changes are confined to within the original Project location and the existing mitigation and monitoring measures already proposed in the original REA Application supporting documents address the proposed changes and prevent any incremental adverse effects. Given this, a number of the REA supporting documents do not require revisions as a result of the proposed changes, including Water Body Assessment Reports Natural Heritage Assessment Reports Stage 1 and 2 Archaeological Assessments Cultural Heritage Assessment Reports. As previously noted, the Noise Assessment Study has been revised to address the proposed changes and is included under separate cover. The following sections identify the amendments to each of the REA supporting documents as a result of the proposed Project changes. For each amended report, a table is provided identifying the original text, the amended text (with the changes highlighted in red text as either additions or deletions and the original page and section of the text being amended. 3.1 Project Description Report Table 3.1 identifies the amendments to the Project Description Report. Table 3.1 Project Description Report Amendments Page Section Original Text Revised Text Access Road Construction Site Security New access roads will be required to allow transport of equipment from the main road (County Road 19 to the Project site. Two entrances (one main and one emergency entrance to the site from County Road 19 will be constructed, as required by the Township Fire Department. Gates will be present at each of the entrances off County Road 19 to facilitate maintenance personnel access as well as emergency vehicle access Noise A Noise Assessment Study was completed for the project to identify potential noise effects and required mitigation measures to ensure noise levels meet MOE requirements (Hatch A Nnew access road entrance to the site s will be required to allow transport of equipment from the main road (County Road 19 to the Project site. Two entrances (one main and one emergency entrance to the site from County Road 19 will be constructed, as required by the Township Fire Department. A Ggate will be present at each of the entrances off County Road 19 to facilitate maintenance personnel access as well as emergency vehicle access. A Noise Assessment Study was completed for the project to identify potential noise effects and required mitigation measures to ensure noise levels meet MOE requirements (Hatch Ltd., 2012j. The Page 7

8 Page Section Original Text Revised Text Ltd., 2012j. The study concluded that the Project will meet noise emission requirements with implementation of mitigation strategies (e.g., placement of barriers around inverters, where necessary. Noise will be generated during the construction process. All applicable municipal noise bylaws and timing windows shall be adhered to during the Construction phase of the Project. study concluded that the Project will meet noise emission requirements with implementation of mitigation strategies (e.g., placement of barriers aroundenclosures over inverters clusters with with barriers around some inverter clusters and the substation transformer, where necessary. Noise will be generated during the construction process. All applicable municipal noise bylaws and timing windows shall be adhered to during 22 Table 4.1 Environmental Component Noise the Construction phase of the Project. Environmental Component Noise Installation of noise barriers around transformer and/or inverters if required to meet performance objectives. 22 Table 4.1 Environmental Component Public and facility safety. Emergency Services personnel will be informed of the facility layout, materials and equipment present on the site, safety risks and site access procedures. Two entrances from the facility will be available for emergency personnel. Installation of noise barriersenclosures around transformer and/or inverters if with acoustic barriers around certain inverters and an acoustical barrier around the substation transformer required to meet performance objectives. Environmental Component Public and facility safety Emergency Services personnel will be informed of the facility layout, materials and equipment present on the site, safety risks and site access procedures. Two entrances from the facility will be available for emergency personnel. Table Construction Plan Report Table 3.2 identifies the amendments to the Construction Plan Report. Construction Plan Report Amendments Page Section Original Text Revised Text 6 2 Construction Plan Figure 2.1 Plan The Site Layout Plan has been revised to show the revised locations of Project equipment. See Figure 1.1 of this letter for Vehicle Access Upon reaching the site, delivery trucks will enter the main construction access road from the entrance on County Road 19, as shown in Figure 2.1. The trucks will use the on-site gravel roads, to the revised figure. Upon reaching the site, delivery trucks will enter the main construction access road from the entrance on County Road 19, as shown in Figure The trucks will use the on-site gravel roads, to deliver supplies Page 8

9 Page Section Original Text Revised Text deliver supplies to the area under construction. The trucks will exit the site at the same entrance on County Road 19. A secondary entrance will be available from County Road 19, for emergency vehicle access, as shown in Figure Electrical System The Project will have a total of approximately twenty 500-kW AC inverters. These inverters will convert the DC power collected into AC power, and this will be stepped up by a transformer adjacent to each inverter to a planned voltage of 27.6 kv. The inverters and transformer will not be enclosed. 39 Table 4.1 Environmental Component Public and facility safety to the area under construction. The trucks will exit the site at the same entrance on County Road 19. A secondary entrance will be available from County Road 19, for emergency vehicle access, as shown in Figure 2.1. The Project will have a total of approximately twenty 500-kW AC inverters. These inverters will convert the DC power collected into AC power, and this will be stepped up by a transformer adjacent to each inverter to a planned voltage of kv. The inverters will be enclosed but the medium voltage and transformer at each cluster will not be enclosed. Environmental Component Public and facility safety Emergency Services personnel will be informed of the facility layout, materials and equipment present on the site, safety risks and site access procedures. Two entrances from the facility will be available for emergency personnel. Emergency Services personnel will be informed of the facility layout, materials and equipment present on the site, safety risks and site access procedures. Two entrances to the facility will be available for emergency personnel. 3.3 Design and Operations Report Table 3.3 identifies the amendments to the Design and Operations Report. Table 3.3 Design and Operations Report Amendments Page Section Original Text Revised Text 5 2 Site Plan Figure 2.1 Site Layout Plan The Site Layout Plan has been revised to show the revised locations of Project equipment. See Figure 1.1 of this letter for the revised figure Fencing and Lighting Perimeter fencing is provided as per the proposed fence line shown in Figure 2.1 in order to restrict access from the general public. Two locking vehicle gates shall be provided in the perimeter fencing, both of which will be sized to accommodate transportation of equipment, heavy construction vehicles and emergency response vehicles (e.g., large fire trucks. Perimeter fencing is provided as per the proposed fence line shown in Figure 21.1 in order to restrict access from the general public. Two A locking vehicle gates shall be provided in the perimeter fencing, both of which will be sized to accommodate transportation of equipment, heavy construction vehicles and emergency response vehicles (e.g., large fire trucks. Page 9

10 Page Section Original Text Revised Text Access Roads Electrical Equipment PV Inverters Intermediate Transformers As shown In Figure 2.1, two entrances from County Road 19 will be constructed. One entrance will serve as the primary site access and the other will serve as an emergency entrance/exit. Emergency response agencies will have access to each entrance through separate lockboxes or other appropriate mechanisms. The DC electrical current from the combiner boxes will be transmitted through underground or aboveground cabling connected to one of two 500-kW inverters, which will be situated on a concrete pad and not enclosed in any structure. Each inverter will convert the DC electrical current to alternating current (AC and an inverter transformer, located adjacent to the inverter cluster will step up the voltage to 27.6 kv. The electricity, now at 27.6 kv (AC, will be transmitted through underground or aboveground cabling to the electrical switching equipment situated in the substation yard, which will step up the voltage to 44 kv. The Project will have a total of approximately twenty 500-kW AC inverters, situated in clusters of 2 inverters per 1 MW of solar panels. Each cluster of two inverters will be installed on a pre-cast or cast-in-place concrete pad. The inverters will be weather proofed and will not be situated within an enclosure. The Satcon Equinox 500 kw has been selected as the preferred 500-kW inverter. Manufacturer s product information is provided in Appendix C. The Project will have a total of 10 intermediate pad-mounted transformers that will step up the voltage to 27.6 kv. Each transformer will be shared by a pair of 500-kW inverters and will be located adjacent to the inverter pairs. At this stage, the specific make and model of the As shown In Figure 21.1, two one entrances from County Road 19 will be constructed. One entrance will to serve as the primary site access and the other will serve as an emergency entrance/exit. Emergency response agencies will have access to each the entrance through separate lockboxes or other appropriate mechanisms. The DC electrical current from the combiner boxes will be transmitted through underground or aboveground cabling connected to one of two 500-kW inverters, which will be situated on a concrete pad and not enclosed in any structurewithin an enclosure. Each inverter will convert the DC electrical current to alternating current (AC and an inverter transformer, located adjacent to the inverter cluster will step up the voltage to kv. The electricity, now at kv (AC, will be transmitted through underground or aboveground cabling to the electrical switching equipment situated in the substation yard, which will step up the voltage to 44 kv. The Project will have a total of approximately twenty 500-kW AC inverters, situated in clusters of 2 inverters per 1 MW of solar panels. Each cluster of two inverters will be installed on a pre-cast or cast-in-place concrete pad. The inverters will be weather proofed and will not be situated within an enclosure. The Satcon EquinoxSMA Sunny Central 500- HE 500 kw has been selected as the preferred 500-kW inverter. The Project will have a total of 10 intermediate pad-mounted transformers that will step up the voltage to kv. Each transformer will be shared by a pair of 500-kW inverters and will be located adjacent to the inverter pairs. At this stage, the specific make and model of the transformers has not been Page 10

11 Page Section Original Text Revised Text transformers has not been finalized, but they would each typically be an oilfilled, medium-voltage transformer with a nominal capacity of 1000 kva. The dimensions of a typical pad-mounted transformer are approximately 1.9 m high by 1.2 m long by 0.8 m wide, and it weighs about 1400 kg Main Step Up Transformer and Connection Point The main step-up transformer will be in the substation yard (the location of which is shown in Figure 2.1. Secondary containment will be installed around the main substation transformer. The transformer is to be used as a step-up transformer between a 27.6-kV customer-owned solar collector system and a utility-owned 44-kV feeder. It is expected that the 44-kV line from the substation to the interconnection point with the existing HONI distribution line will be aboveground on an overhead pole line (Figure Table 5.1 Environmental Component Noise finalized, but they would each typically be an oil-filled, medium-voltage transformer with a nominal capacity of 1000 kva. The dimensions of a typical pad-mounted transformer are approximately 1.9 m high by 1.2 m long by 0.8 m wide, and it weighs about 1400 kg. The main step-up transformer will be in the substation yard (the location of which is shown in Figure 2.1. Secondary containment will be installed around the main substation transformer. The transformer is to be used as a step-up transformer between a kV customer-owned solar collector system and a utility-owned 44-kV feeder. It is expected that the 44-kV line from the substation to the interconnection point with the existing HONI distribution line will be aboveground on an overhead pole line (Figure 2.1. Environmental Component Noise Installation of noise barriers around transformer and/or inverters if required to meet performance objectives. 22 Table 5.1 Environmental Component Public and facility safety Emergency Services personnel will be informed of the facility layout, materials and equipment present on the site, safety risks and site access procedures. Two entrances from the facility will be available for emergency personnel. Installation of noise barriers around transformer and/orenclosures around inverters with acoustic barriers around certain inverters and a barrier around the main transformer if required to meet performance objectives. Environmental Component Public and facility safety Emergency Services personnel will be informed of the facility layout, materials and equipment present on the site, safety risks and site access procedures. Two entrances from the facility will be available for emergency personnel. Page 11

12 4. Changes to Cornwall Solar Project REA Application Hatch Ltd. (Hatch has reviewed the draft MOE Technical Guide to Renewable Energy Approval Draft Chapter 10 (Making Changes to Renewable Energy Approval (REA Projects and has determined the alterations to the Project are not significant and would be determined by the agency as a Project Design Change. The following requirements are listed below (table 4.1 with respect to this categorization: Table 4.1 Categorization of Change Change Category Description Documentation Requirements Notification Requirements Consultation Requirements Implications on MOE Technical Review EBR Posting Project Design Change will not result in increased potential negative environmental effects beyond those that were identified (other than insignificant increases in noise at some receptors, documented and consulted on during the REA process for the original project. Modification document to be provided describing the two scenarios (see section 3 above. Public notification - stakeholder mailing and posting of this document on the Project website. Not Applicable. Continue review no need to stop clock. No additional posting 5. Conclusions Cornwall Solar Inc. is proposing several changes to the Cornwall Solar Project, including a revised site layout with revised inverter cluster and substation transformer locations and models, altered internal access road locations and minor changes to the solar panel layout. All changes to the site plan occur within the original Project location identified in the REA application. This letter has provided a description of and rational for the proposed changes, identified potential incremental effects of the change and the amendments to each of the affected supporting documents. This letter serves as an amendment to the following reports: Project Description Report Construction Plan Report Design and Operations Report. Page 12

13 Due to the nature of the proposed changes, the Noise Assessment Study has been revised and it has concluded that noise levels are compliant with the MOE noise guidelines, with some receptors experiencing decreased noise levels and others experiencing insignificant increases in noise. Given the minor nature of the proposed changes and the fact that it is located within the originally proposed Project location (REA study area, other REA supporting documents did not require any updates. Overall, the proposed changes do not result in any negative environmental effects not considered in the original REA application and supporting documents and it is concluded that this constitutes a Project Design Change. Yours faithfully, Noel Boucher Environmental Coordinator NB:srg Attachments cc: V. Schroter, MOE S. Fairfield, Cornwall Solar Inc. S. Hitchinson, Cornwall Solar Inc. Page 13

14 Suite 500, 4342 Queen Street Niagara Falls, Ontario, Canada L2E 7J7 Tel Fax: Appendix A Revised Site Plan H , Rev. 1

15 60 AY W GH HI Project Site 70 Hig h wa y 40 1 Access Road Cornwall St. Lawrence River 65 Legend Inverter Cluster - with Acoustic Barrier Inverter Cluster - without Acoustic Barrier Road Railway Topographic Contour (5 m interval Watercourse Parcel Project Site TY UN CO RD Inverter Cluster R TY UN O C D1 Substation 9 65 Main Site Access Notes: 1. Produced by Hatch under licence from Ontario Ministry of Natural Resources, Copyright (c Queens Printer Spatial referencing UTM NAD 83, Zone Imagery from Google Earth Pro, Metres N 1:5,000 KIN 55 LO CH RD Figure 1.1 Cornwall Solar Inc. 55 P:\336742\SPECIALIST_APPS\Corwall\Cornwall_RevisedsitePlan.mxd Date Saved: 11/23/2012 9:28:54 AM 55 Cornwall Solar Project Revised Site Plan!

16 Appendix B Noise Comparison Page 15

17 Table B1 Comparison of Sound Levels Between Original and Revised Reports Receptor ID Original Report Sound Pressure (dba Revised Report Sound Pressure (dba Sound Pressure Change (Revised Original R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R Comments South Glengarry solar project contribution was not taken into account in the revised report since, the Noise Receptor is owned by the South Glengarry solar project proponent

18 Receptor ID Original Report Sound Pressure (dba Revised Report Sound Pressure (dba Sound Pressure Change (Revised Original R R044 N/A 39.4 N/A R R R R R R R R R R R R R R058 N/A 31.7 N/A R R R R R R R R R R R R R R R R R R R R R R R R R R R R Comments Deleted. This was vacant lot receptor in a lot with existing noise receptor R013. Deleted. This was used to model the same house as R057.

19 Receptor ID Original Report Sound Pressure (dba Revised Report Sound Pressure (dba Sound Pressure Change (Revised Original R R N/A N/A Comments New. South Glengarry solar project contribution was not taken into account in the revised report since, the Noise Receptor is owned by the South Glengarry solar project proponent