Appendix D – Telecommunication Reports Wind Power GeoPlanner™ Microwave Study Freeborn Prepared on Behalf of Invenergy LLC June 23, 2017 Invenergy LLC Wind Power GeoPlanner™ Microwave Study Freeborn Table of Contents 1. Introduction - 1 - 2. Project Overview - 1 - 3. Two-Dimensional Fresnel Zone Analysis - 2 - 4. Conclusion - 7 - 5. Contact - 7 - Comsearch Proprietary - 0 - June 23, 2017 Invenergy LLC Wind Power GeoPlanner™ Microwave Study Freeborn 1. Introduction Microwave bands that may be affected by the installation of wind turbine facilities operate over a wide frequency range (900 MHz – 23 GHz). Comsearch has developed and maintains comprehensive technical databases containing information on licensed microwave networks throughout the United States. These systems are the telecommunication backbone of the country, providing long-distance and local telephone service, backhaul for cellular and personal communication service, data interconnects for mainframe computers and the Internet, network controls for utilities and railroads, and various video services. This report focuses on the potential impact of wind turbines on licensed, proposed and applied non-federal government microwave systems. 2. Project Overview Project Information Name: Freeborn Number of Turbines: 136 County: Freeborn, MN and Worth, IA Blade Diameter: 110/116 meters State: MN and IA Hub Height: 80 meters Figure 1: Area of Interest Comsearch Proprietary - 1 - June 23, 2017 Invenergy LLC Wind Power GeoPlanner™ Microwave Study Freeborn 3. Two-Dimensional Fresnel Zone Analysis Methodology Our obstruction analysis was performed using Comsearch’s proprietary microwave database, which contains all non-government licensed, proposed and applied paths from 0.9 - 23 GHz1. First, we determined all microwave paths that intersect the area of interest2 and listed them in Table 1. These paths and the area of interest that encompasses the planned turbine locations are shown in Figure 2. Figure 2: Microwave Paths that Intersect the Area of Interest 1 Please note that this analysis does not include unlicensed microwave paths or federal government paths that are not registered with the FCC. 2 We use FCC-licensed coordinates to determine which paths intersect the area of interest. It is possible that as-built coordinates may differ slightly from those on the FCC license. Comsearch Proprietary - 2 - June 23, 2017 Invenergy LLC Wind Power GeoPlanner™ Microwave Study Freeborn Path Length ID Status Callsign 1 Callsign 2 Band Licensee (km) 1-4 Proposed ANSGAR FREEBORN 11 GHz 44.77 GW Networks 5 Proposed KENSETT WQXI965 11 GHz 21.33 LTD Broadband LLC 6 Licensed KPH213 RXONLY 2 GHz 65.83 KAAL-TV LLC 7 Licensed KYR76 RXONLY 7 GHz 17.10 KAAL-TV LLC 8-11 Proposed MITCHELL FREEBORN 11 GHz 48.82 GW Networks 12 Proposed SHRAD WANGEN 11 GHz 1.55 LTD Broadband LLC 13 Proposed SHRAD WQXI966 11 GHz 10.94 LTD Broadband LLC 14 Licensed WBB411 RXONLY 950 MHz 13.21 Alpha 3E Licensee, LLC 15 Licensed WEG336 WEG335 6.1 GHz 48.42 Interstate Power and Light Company 16 Licensed WEG336 WQME714 6.7 GHz 18.40 Interstate Power and Light Company 17 Licensed WGY635 WEG336 6.7 GHz 8.05 Interstate Power and Light Company 18 Licensed WHC413 WHC791 6.7 GHz 31.17 Union Pacific Railroad Company 19 Licensed WHI758 WHC791 6.7 GHz 42.98 Union Pacific Railroad Company 20 Licensed WHS206 RXONLY 7 GHz 17.11 KAAL-TV LLC 21 Licensed WLI768 RXONLY 950 MHz 12.92 Hometown Broadcasting of Austin, Inc. 22 Licensed WLP693 RXONLY 950 MHz 13.09 Hometown Broadcasting, Inc. 23 Licensed WNTP305 WEG336 6.1 GHz 33.21 Interstate Power and Light Company 24 Licensed WPRR530 WPRY355 6.7 GHz 45.97 Dairyland Power Cooperative 25 Licensed WPRY355 WQRX920 6.1 GHz 16.02 Dairyland Power Cooperative 26 Licensed WPSG783 RXONLY 950 MHz 37.28 Alpha 3E Licensee, LLC 27 Licensed WPXU324 RXONLY 2 GHz 53.05 Rochester TV License Company, LLC 28 Licensed WQGV813 WQVE274 6.1 GHz 9.87 Mower, County of 29 Licensed WQIK762 WQIK790 6.1 GHz 29.01 Minnesota, State of (DOT) 30 Licensed WQIK790 WQIK783 6.1 GHz 22.42 Minnesota, State of (DOT) 31, 32 Licensed WQIK790 WQUM858 6.1 GHz 20.52 Minnesota, State of (DOT) 33 Licensed WQKZ238 RXONLY 7 GHz 50.62 KAAL-TV LLC 34 Licensed WQOD365 WQOD375 6.7 GHz 20.52 Freeborn, County of 35 Licensed WQOD366 WQOD375 6.7 GHz 16.62 Freeborn, County of 36 Licensed WQQD511 WQQD512 18 GHz 12.42 Radio Link Internet 37 Licensed WQQP734 WQQP733 6.1 GHz 15.60 Verizon Wireless (VAW) LLC (ND,MN,SD,NE) 38 Licensed WQQS485 WQQS487 18 GHz 10.11 Sprint Spectrum L.P. 39 Licensed WQRX918 WQRX920 6.1 GHz 23.00 Dairyland Power Cooperative 40 Licensed WQVM801 WQVM806 11 GHz 8.02 T-Mobile License LLC 41 Licensed WQXI963 GAVILONG 11 GHz 16.60 LTD Broadband LLC 42, 43 Licensed WQXI963 WQXI965 11 GHz 15.35 LTD Broadband LLC 44, 45 Licensed WQXI965 WQYG949 11 GHz 13.69 LTD Broadband LLC 46 Licensed WQYG949 WQYG950 11 GHz 10.26 LTD Broadband LLC Table 1: Summary of Microwave Paths that Intersect the Area of Interest (See enclosed mw_geopl.xlsx for more information and GP_dict_matrix_description.xls for detailed field descriptions) Comsearch Proprietary - 3 - June 23, 2017 Invenergy LLC Wind Power GeoPlanner™ Microwave Study Freeborn Verification of Coordinate Accuracy It is possible that as-built coordinates may differ from those on the FCC license. For this project, 22 paths cross within close proximity of the proposed turbines and the tower locations for these paths will have a critical impact on the result. Therefore, we verified these locations using aerial photography. Some of the towers were found to be slightly off and were moved to their locations based on the aerial photos3. Next, we calculated a Fresnel Zone for each path based on the following formula: n dd 21 r 17.3 FGHz dd 21 Where, r = Fresnel Zone radius at a specific point in the microwave path, meters n = Fresnel Zone number, 1 FGHz = Frequency of microwave system, GHz d1 = Distance from antenna 1 to a specific point in the microwave path, kilometers d2 = Distance from antenna 2 to a specific point in the microwave path, kilometers In general, this is the area where the planned wind turbines should be avoided, if possible. A depiction of the Fresnel Zones for each microwave path listed can be found in Figures 3 and 4, and is also included in the enclosed shapefiles4,5. 3 See enclosed mw_geopl.shp and mw_geopl_fcc.shp for details. 4 The ESRI® shapefiles enclosed are in NAD 83 UTM Zone 15 projected coordinate system. 5 Comsearch makes no warranty as to the accuracy of the data included in this report beyond the date of the report. The data provided in this report is governed by Comsearch’s data license notification and agreement located at http://www.comsearch.com/files/data_license.pdf. Comsearch Proprietary - 4 - June 23, 2017 Invenergy LLC Wind Power GeoPlanner™ Microwave Study Freeborn Figure 3: Microwave Paths with Fresnel Zones (North) Comsearch Proprietary - 5 - June 23, 2017 Invenergy LLC Wind Power GeoPlanner™ Microwave Study Freeborn Figure 4: Microwave Paths with Fresnel Zones (South) Comsearch Proprietary - 6 - June 23, 2017 Invenergy LLC Wind Power GeoPlanner™ Microwave Study Freeborn 4. Conclusion Total Microwave Paths with Affected Turbines intersecting Total Turbines Paths Fresnel Zones the Fresnel Zones 46 0 136 0 Table 2: Fresnel Zone Analysis Result Our study identified 46 microwave paths intersecting the Freeborn Project area of interest. The Fresnel Zones for these microwave paths were calculated and mapped in order to assess the potential impact from the turbines. A total of 136 turbines were considered in the analysis, each with a blade diameter of 110 or 116 meters and a hub height of 80 meters. Of those turbines, none were found to have potential obstruction with the microwave systems in the area. 5. Contact For questions or information regarding the Microwave Study, please contact: Contact person: Denise Finney Title: Account Manager Company: Comsearch Address: 19700 Janelia Farm Blvd., Ashburn, VA 20147 Telephone: 703-726-5650 Fax: 703-726-5595 Email: [email protected] Web site: www.comsearch.com Comsearch Proprietary - 7 - June 23, 2017 Wind Power GeoPlanner™ Microwave Study Freeborn Prepared on Behalf of Invenergy LLC December 6, 2016 Invenergy LLC Wind Power GeoPlanner™ Microwave Study Freeborn Table of Contents 1. Introduction - 1 - 2. Project Overview - 1 - 3. Fresnel Zone Analysis - 2 - 4. Conclusion - 6 - 5. Contact - 6 - Comsearch Proprietary - 0 - December 6, 2016 Invenergy LLC Wind Power GeoPlanner™ Microwave Study Freeborn 1. Introduction Microwave bands that may be affected by the installation of wind turbine facilities operate over a wide frequency range (900 MHz – 23 GHz). Comsearch has developed and maintains comprehensive technical databases containing information on licensed microwave networks throughout the United States. These systems are the telecommunication backbone of the country, providing long-distance and local telephone service, backhaul for cellular and personal communication service, data interconnects for mainframe computers and the Internet, network controls for utilities and railroads, and various video services. This report focuses on the potential impact of wind turbines on licensed, proposed and applied non-federal government microwave systems. 2. Project Overview Project Information Name: Freeborn Number of Turbines: TBD Counties: Freeborn (MN), Mower (MN), Worth (IA) Blade Diameter: 116 meters State: Minnesota and Iowa Hub Height: TBD Figure 1: Area of Interest Comsearch Proprietary - 1 - December 6, 2016 Invenergy LLC Wind Power GeoPlanner™ Microwave Study Freeborn 3. Fresnel Zone Analysis Methodology Our obstruction analysis was performed using Comsearch’s proprietary microwave database, which contains all non-government licensed, proposed and applied paths from 0.9 - 23 GHz1. First, we determined all microwave paths that intersect the area of interest2 and listed them in Table 1.