BP SDEIS App I Licensed Microwave Report-Comsearch Cape Vincent

8/7/2019 BP SDEIS App I Licensed Microwave Report-Comsearch Cape Vincent

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Environmental Resources Management Southwest, Inc.206 East 9th Street, Suite 1700

Austin, Texas 78701

(512) 459-4700

Licensed Microwave Report - ComsearchAppendix I

February 2011

Project No. 0092352


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Wind Power GeoPlanner

Licensed Microwave Report

Cape Vincent

Prepared on Behalf ofEnvironmental

Resources Management

May 6, 2010


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Environmental Resources ManagementWind Power GeoPlanner

Licensed Microwave ReportCape Vincent

Table of Contents

1. Introduction - 1 -

2. Summary of Results - 2 -

3. Tables and Figures - 4 -

4. Contact Us - 8 -

Comsearch Proprietary - 0 - May 6, 2010


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1. Introduction

The use of wind energy, one of the oldest forms of harnessing a natural energy source, is nowone of the worlds fastest growing alternative energy sources. The United States is committed tothe use of wind energy, and over the next several years billions of dollars will be spent on windpower projects. However, as new wind turbine generators are installed around the country, it isimportant to note that they may pose an interference threat to existing microwave systems andbroadcast stations licensed to operate in the United States.

Wind turbines can interfere with microwave paths by physically blocking the line-of-sightbetween two microwave transmitters. Additionally, wind turbines have the potential to causeblockage and reflections (ghosting) to television reception. Blockage is caused by the physicalpresence of the turbines between the television station and the reception points. Ghosting iscaused by multipath interference that occurs when a broadcast signal reflects off of a large

reflective objectin this case a wind turbineand arrives at a television receiver delayed intime from the signal that arrives via direct path.

Many states and other jurisdictions recognize the need for regulations addressing interferenceto radio signal transmissions from the wind turbine installations. Specifically, local planningauthorities typically require project developers to ensure wind turbines will not causeinterference. In some cases they require developers to notify the telecommunication operatorsin the area of the proposed wind turbine installation. Other factors prompting developers toundertake proactive investigation into potential interference include the need to prevent legaland regulatory problems and the desire to promote goodwill within the communitya goodneighbor approach.

Comsearch has developed and maintains comprehensive technical databases containinginformation on licensed microwave networks throughout the United States. Microwave bandsthat may be affected by the installation of wind turbine facilities operate over a wide frequencyrange (900 MHz 23 GHz). These systems are the telecommunication backbone of the country,providing long-distance and local telephone service, backhaul for cellular and personalcommunication service, data interconnects for mainframe computers and the Internet, networkcontrols for utilities and railroads, and various video services.

This report focuses on the potential impact of wind turbines on licensed non-federal governmentmicrowave systems. Comsearch provides additional wind energy services, a description ofwhich is available upon request.



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2. Summary of Results

An overall summary of results appears below.

Project Information

Name: Cape Vincent

County: Jefferson

State: New York

Total Microwave

Paths

Paths with

ObstructionsTotal Turbines

Turbine

Obstructions

3 N/A N/A N/A

MethodologyOur obstruction analysis was performed using Comsearchs proprietary microwave database,which contains all non-government licensed paths from 0.9 - 23 GHz1. First, we determined allmicrowave paths that intersect the area of interest2. The area of interest was defined by theclient and encompasses the planned turbine locations. Next, for each microwave path thatintersected the project area, we calculated a Worst Case Fresnel Zone (WCFZ). The mid-point

of a full microwave path is the location where the widest (or worst case) Fresnel zone occurs.Fresnel zones were calculated for each path using the following formula.

#

21

21

17.3dd

dd

F

nRn

GHz

Where,Rn = Fresnel Zone radius at a specific point in the microwave path, metersn = Fresnel Zone number, 1FGHz = Frequency of microwave system, GHz

d1 = Distance from antenna 1 to a specific point in the microwave path, kilometersd2 = Distance from antenna 2 to a specific point in the microwave path, kilometers

For worst case Fresnel zone calculations, d1 = d2

1

Please note that this analysis does not include unlicensed microwave paths or federal government paths that arenot registered with the FCC.

2We 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.



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The calculated WCFZ radius, giving the linear path an area or swath, buffers each microwavepath in the project area. See the Tables and Figures section for a summary of paths and WCFZ

distances. In general, this is the two-dimensional area where the planned wind turbines shouldbe avoided, if possible. A depiction of the WCFZ overlaid on topographic basemaps can befound in the Tables and Figures section, and is also included on the enclosed CD3.

Discussion of Potential ObstructionsFor this project, turbine locations were not provided; thus we could not determine if any potentialobstructions exist between the planned wind turbines and the incumbent microwave paths. Ifthe latitude and longitude values for turbine locations are provided, Comsearch can identifywhere a potential conflict might exist.

3The ESRI shapefiles contained on the enclosed CD are in NAD 83 UTM Zone 18 projected coordinate system.


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3.TablesandFigures

Figure1:AreaofInterest

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Figure2:MicrowavePathsthatIntersecttheAreaofInterest


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Figure3:Micro

wavePathswithWCFZBuffers


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ID

SiteName1

SiteName2

Callsign1

Callsign2

Band

Licens

ee

WCFZ

(m)

1

WEALTHAAVE

CA

PEVINCEN

WLQ373

RXONLY

950MHz

BORD

ERINTERNATIONALBROADCASTIN

G

52.96

2

BRODIERD

INDIANHILL

WME879

RXONLY

950MHz

MARS

HILLBROADCASTINGCO

43.09

3

CAPEVINCEN

ADAMS

WPOS292

WMR378

Upper6GHz

NewC

ingularWirelessPCS,LLC(NY)

20.84

Table1:MicrowaveP

athsthatIntersecttheAreaofInterest

GP_dict_matrix_des

cription.xlsfordetailedfielddescriptions)

(Seeenclosedm

w_geopl.xlsformoreinformationand


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4. Contact Us

For questions or information regarding the Licensed Microwave Report, contact:

Contact person: Denise FinneyTitle: Account ManagerCompany: ComsearchAddress: 19700 Janelia Farm Blvd., Ashburn, VA 20147Telephone: 703-726-5650Fax: 703-726-5595Email: [email protected] site: www.comsearch.com


Documents

BP SDEIS App I Licensed Microwave Report-Comsearch Cape Vincent