American Transmission Company

Appendix K Exhibit 1 PSC REF#:191894

Public Service Commission of Wisconsin

RECEIVED: 10/15/13, 1:25:27 PM

September 24, 2013

AMERICAN TRANSMISSION COMPANY

Badger Coulee 345 kV Transmission Line Project Communication Facility Impact Study Phase 1

Technical Report

Revision 0

PROJECT NUMBER: 130308

PROJECT CONTACT: KURT BELL. P.E. EMAIL: [email protected] PHONE: (208) 288-6343

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COMMUNICATION FACILITY IMPACT STUDY PHASE 1

PREPARED FOR: AMERICAN TRANSMISSION COMPANY

PREPARED BY: TYLER KENT - (315) 295-7407 - [email protected] KURT BELL, P.E. - (208) 288-6343 - [email protected] JOHN SQUIRE, P.E. - (503) 892-6764 - [email protected]

REVISION HISTORY ISSUE ISSUED PREP CHKD APPD REV. NOTES DATE FOR BY BY BY 0 09/24/13 IMPL GKB TRK JFS Issued for client implementation

“Issued For” Definitions: - “Prelim” means this document is issued for preliminary review, not for implementation - “Appvl” means this document is issued for review and approval, not for implementation - “Impl” means this document is issued for implementation - “Record” means this document is issued after project completion for project file

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TABLE OF CONTENTS

1.0 Executive Summary ...... 1 2.0 Project Background ...... 2 3.0 Data ...... 4 3.1 Badger-Coulee 345 kV Transmission Line Details ...... 4 4.0 Analysis Results ...... 5 4.1 AM, FM, And TV Broadcast Facilities ...... 5 4.1.1 AM Facilities ...... 6 4.1.2 FM Facilities ...... 7 4.1.3 TV Facilities ...... 8 4.2 Additional Communication Facilities ...... 9 5.0 Conclusion ...... 17

Appendix A – Transmission Line Routes ...... A-1

LIST OF TABLES

Table 1: AM Broadcast Facilities Located Within 10 km ...... 7 Table 2: FM Broadcast Facilities Located Within 10 km ...... 7 Table 3: TV Broadcast Facilities Located Within 10 km ...... 8 Table 4: Additional Communication Antennas Located Within 10 km ...... 10

TABLE OF FIGURES

Figure 1: Frequency Spectra of Corona and Gap Discharge Current Pulses ...... 5 Figure 2: Proposed Routes Briggs Road - North Madison Transmission Line ...... A-2 Figure 3: Proposed Routes North Madison – Cardinal Transmission Line ...... A-3

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1.0 EXECUTIVE SUMMARY This Phase 1 communication facilities impact study is for American Transmission Company’s (ATC) Badger Coulee 345 kV Transmission Line Project (BCTLP). This project is a new single circuit 345 kV transmission line that will connect the Xcel Energy Briggs Road Substation as part of the CapX2020 project (to be constructed in the town of Onalaska) to the existing North Madison Substation and ultimately terminating at the existing Cardinal Substation.

POWER Engineers, Inc.’s (POWER) engineering service for this study was to identify existing communication facilities in the vicinity of the two possible line routes (identified as the Northern and Southern Routes) that may be impacted by the new 345 kV transmission line. The purpose of the Phase 1 investigation is to validate whether a viable risk is present and is not meant to present detailed engineering or address mitigation techniques. Communication sites with possible risks are identified that will be analyzed in the Phase 2 investigation.

The conclusions from the Phase 1 assessment indicate that there are communication facilities in close proximity to the BCTLP which could be impacted by the new 345 kV transmission line. The identification of the sites and additional Phase 2 analysis required is as follows: 1. Audible Noise, Radio Interference, and Television Interference: a. At the time of this assessment, calculations predicting the audible noise (AN), Radio Interference (RI), and television interference (TVI) associated with the operation of the Badger Coulee 345 kV transmission line had not been performed. It is recommended that these predictive calculations are made for the selected routes for use in comparison to established standards and regulations. b. It is recommended that pre-energization audible noise measurements are conducted at even intervals along the route to be used for validation of predicted measurements. c. It is recommended that pre-energization pattern measurements for all AM radio and television broadcast facilities within 10 kilometers (approximately 6.2 miles) of the proposed line are conducted at even intervals along the route. This will determine broadcast signal strengths which will then be used for computing signal-to-noise ratios to assess interference from the 345 kV transmission line. 2. AM Reradiation: a. Nine (9) AM Radio antennas were found to be within 10 km of the proposed routes. It is recommended that all nine antennas are analyzed in Phase 2 using the methodologies in IEEE standard 1260-1996 to predict the possibility of AM broadcast reradiation. 3. Microwave Communication Line-of-Sight Interference: a. At the time of assessment, determination for additional analysis was based upon the visual inspection of the azimuth of the licensed microwave systems and the possibility of the communication path crossing the line. Therefore, details associated with the identified paths will be required in the Phase 2 analysis.

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4. Grounding Analysis: a. Initial investigation identified four (4) licensed communication facilities within approximately 500 feet (established from previous studies threshold, in the State of Wisconsin) of the transmission line, as the facilities that may experience transferred voltages on their associated communication grounding systems. If during Phase 2 analysis the soil composition requires the 500 feet threshold be extended, additional assessment of the antennas may be required to verify adequacy of this recommendation. This requires additional Phase 2 analysis to analyze the soil composition in the area for the purpose of identifying the specific separation distance required at each of the sites. The additional investigation will require: i. At least one soil measurement traverse to extend a distance equal to the separation distance of the transmission line and each of the four (4) licensed facilities in question at a distance no greater than 500 feet from the proposed line. 5. Additional Sites: a. The following sites have been identified as requiring additional Phase 2 analysis to determine the impacts of their facilities once a route has been identified and approved. i. All WisDOT locations along the highways and interstates associated with the final selected route. 1. Additional requests for information will be required once a route has been selected to determine all facilities located near the line. ii. GPS Satellite low power signals to NOAA state survey monuments near the proposed line’s center line. 1. Additional requests for information will be required once a route has been selected to determine all facilities located near the line. iii. A single Cell Tower (Van Etten Property) located East of Interstate 39 on the northern route. 1. Information pertaining to this facility was gathered during the field survey to be used during Phase 2 analysis. iv. Ham Radio operator (Neven Property) north of the town of Lodi, approximately 1,800 feet from the proposed line location. 1. Information pertaining to this facility was gathered during the field survey to be used during Phase 2 analysis.

2.0 PROJECT BACKGROUND The transmission line investigated in this study is ATC’s Badger Coulee 345 kV transmission line, which is to be constructed between the Briggs Road Substation (Xcel Energy’s new substation that is be located in the town of Onalaska) to the existing North Madison Substation (located in the town of Vienna) and ultimately to the existing Cardinal Substation (located in the town of Middleton). Detailed descriptions of the Northern and Southern routes (with additional information of structures and other circuits) are shown in the Briggs Road - North Madison Transmission Line Design Summary Document and the North Madison - Cardinal Design

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Summary Document provided by Electrical Consultants, Inc. An overview map of the proposed routes and segments for the Briggs Road - North Madison transmission line is in Appendix A (Figure 2). An overview map of the proposed routes and segments for the North Madison – Cardinal transmission line is in Appendix A (Figure 3).

Northern Route for Briggs Road - North Madison (Segments E, G, H, J, K, M, N and P or P-East) The northern route will begin at the Briggs Road Substation that Xcel Energy is building in the town of Onalaska as part of the CapX2020 project. There are two variations to this route when exiting the Briggs Road Substation (Segment P and Segment P-East). The segment options become a common route from the intersection of Highway 53 and Highway 35 (approximately three miles north of the new Briggs Road Substation) until they reach the Black River. At this point the line will continue north and cross the Black River until it reaches the Northern State Power Company’s Tremval Substation just outside of the city of Blair. The 345 kV transmission line will bypass the Tremval Substation and continue to travel east until it reaches I-94 in the city of Black River Falls. After crossing I-94, the 345 kV transmission line will travel along the interstate until just south of the I-90/I-94 split. At this point the 345 kV transmission line travels south and east, until it again intersects the interstate southeast of Camp Douglas and northwest of the city of New Lisbon. The 345 kV transmission line will continue southeast along the interstate past the city of Mauston and through the village of Lyndon Station until it reaches just west of the southern interchange with Highway 12 in the city of Wisconsin Dells. At this point the 345 kV transmission line will depart from the interstate and travel south and east, a short distance before it again intersects the interstate. The 345 kV transmission line will travel adjacent to the interstate until it reaches the I-39/I-90/I-94 interchange in the village of Caledonia. After the I- 39/I-90/I-94 interchange in Caledonia, the 345 kV transmission line will cross the Wisconsin River. The 345 kV transmission line will then parallel the existing Columbia to North Madison 345 kV double circuit transmission line into North Madison Substation. This route alternative is approximately 162 miles in length if the Segment P option is selected and approximately 161 miles in length if the Segment P-East option is selected. Northern Route for North Madison – Cardinal (Segments A and D) The northern route will be double circuit with the existing ATC 138 kV circuit 13875 from the North Madison Substation to the Cardinal Substation in a portion of the parallel segment the new Badger- Coulee 345 kV transmission line will separate from the existing 138 kV circuit and run east along a short distribution line corridor, cross Highway 14 and then be routed into the Cardinal Substation. This route alternative is approximately 20 miles in length. Southern Route for Briggs Road - North Madison (Segments F, G, I, J, L, M and O) The southern route will begin at the Briggs Road Substation that Xcel Energy is building in the town of Onalaska as part of the CapX2020 project. After exiting the substation to the south, the 345 kV transmission line will travel south along Highway 53 toward the I-90 interchange. At the interchange of Highway 53 and I-90, the 345 kV transmission line will turn and travel east along I-90. At a point about halfway between the town of Rockland and the city of Sparta, the 345 kV transmission line will depart from the interstate and travel cross country south and east until it reaches the village of Cashton. The 345 kV transmission line will be travel east and then south

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just northwest of the village of Lyndon Station. The 345 kV transmission line will travel southeast until the Canadian Pacific Railroad (CPR) intersects with I-90/I-94 north of the city of Wisconsin Dells. The 345 kV transmission line will turn and head south and then head east through the city of Wisconsin Dells until it reaches the Kilbourn Substation. The 345 kV transmission line will bypass the Kilbourn Substation and will cross the Wisconsin River adjacent to the hydro-electric power plant that is next to the Kilbourn Substation. The 345 kV transmission line will travel southeast until it reaches the Trienda Substation. The 345 kV transmission line will bypass Trienda Substation will travel southeast to a location just west of I- 39 in the city of Portage. The 345 kV transmission line will travel south and east until it intersects with I-39. The 345 kV transmission line will then parallel the CPR tracks. The 345 kV transmission line will travel south along I-39 until it reaches the I-39/I-90/I-94 interchange and then will cross the Wisconsin River. South of the interchange, the 345 kV transmission line will continue southeast along the I-39/I-90/I-94 interstate and cross the Wisconsin River. Just south of the river crossing, the 345 kV transmission line will depart from the interstate and travel cross country, south and east, the rest of the way to North Madison Substation. This route alternative is approximately 136 miles in length. Southern Route for North Madison – Cardinal (Segments B or B-North and C) The southern route for North Madison – Cardinal consists of portions that will be double circuited (with existing ATC 69 kV circuits Y-85, Y-131 and 6927) but will primarily travel cross-country and along existing roadways as a single circuit 345 kV line. There is another route option in this area that would place the 345 kV line alignment north of Segment B, single circuit, on a cross country corridor rather than double circuit on the existing corridor. This option would be used to avoid the Sunnyside Seed Farm if necessary. This route alternative is approximately 23 miles in length.

Along both routes, multiple communication facilities are within approximately 10 km (approximately six miles) of the 345 kV transmission line routes. Therefore, to ensure no adverse effects on these facilities, field and office surveys were performed to determine the line sections that may produce a risk.

3.0 DATA 3.1 Badger Coulee Transmission Line Details The proposed Badger Coulee 345 kV transmission line configuration and location was provided by Electrical Consultants, Inc. in the form of four PLS-CADD model back up files. These models contained the specific alignment and segmentation of the each of the two routes. These models were used for all analysis and are named below:  northern route - segments e g h j k m n 5-17-2013.bak  southern route - segments o m l j2 i g f 5-17-2013.bak  segments a and d 5-17-2013.bak  segments b and c 5-17-2013.bak

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4.0 ANALYSIS RESULTS 4.1 AM, FM, and TV Broadcast Facilities Verification of a possible concern was based upon the FCC database, a field visit performed by POWER (June 10-14, 2013), and additional information provided by the owners/operators of some of the facilities for the antenna sites. A detailed survey of the areas surrounding both routes at a distance of no less than 10 kilometers (km) from both routes was performed to ensure no additional communication towers were located in the area. Facilities found within 10 km of both routes were considered for all analyses presented in this document. All facilities are presented below in Tables 1 through 4.

Radio interference created by transmission line conductors during normal operation is based upon the transient current pulse produced from either corona or gap discharges. These current pulses have fast rise times and short durations, resulting in a frequency spectrum for positive and negative corona that falls drastically and extends to around 100 MHz. Gap discharges result in a frequency spectrum that falls off drastically around 100 MHz and extends to approximately 1 GHz. Refer to Figure 1 for a detailed plot of typical frequency spectra created by corona and gap discharges. (Maruvada, P.S. 2000. Corona Performance of High Voltage Transmission Lines, Research Studies Press Ltd. Badlock, Hertfordshire, England. Pp 113-118).

Figure 1: Frequency Spectra of Corona and Gap Discharge Current Pulses

Gap discharges result from electrical discharges between broken or poorly fitting hardware, such as insulators, clamps and brackets. As this can vary significantly, gap discharges are very difficult to calculate and require significant data and thus are not included in this report. Gap discharges on large high voltage lines are rare because it is difficult for hardware to become loose electrically because of the steel structures and the tension on the hardware caused by the weight of the long spans. About the only places where gaps occur on steel structure transmission lines is at damaged glass or ceramic insulators or where unweighted jumpers are not connected solidly.

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In addition, gap discharges can be located and corrected when they cause harmful radio frequency interference (RFI). Finally, during foul weather the moisture will short out most gaps and remove the gap discharge effects from the RFI, leaving only the corona noise. For these reasons, corona from the conductor will typically drive the analysis.

AM radio stations operate in the frequency bandwidth of 530 kHz to 1700 kHz and are susceptible to corona interference and are analyzed in this range. FM radio stations operate in the bandwidth of 87 MHz to 108 MHz and because of the higher frequency and their broadcast method are not susceptible to either positive or negative corona and therefore not analyzed. Television stations operate in portions of the frequency bandwidth between 54 MHz to 698 MHz and are somewhat susceptible to foul-weather corona interference in this bandwidth. Cell phone communications operate in portions of the frequency bandwidth of 800 MHz to 1.96 GHz and are not susceptible to corona interference; therefore cell phone interference from positive and negative corona is not analyzed. Likewise any communication systems operating above 100 MHz are not significantly susceptible to corona interference and are not analyzed. 4.1.1 AM Facilities In addition to the signal inference associated with corona discharge under normal operating conditions, AM facilities must also be analyzed for reradiation. Reradiation is defined as the emission of radiation after an object absorbs an incident radiation. AM broadcast antennas emit electromagnetic waves outward towards listening areas. The passing waves induce currents in manmade structures containing metal. These currents radiate their own electromagnetic waves at the same frequency as the original incident wave. These reradiating waves couple with the incident wave causing constructive or destructive interference. Constructive interference is assumed since it results in increasing electric field strength.

IEEE Standard 1260-1996 (Guide on the Prediction, Measurement, and Analysis of AM Broadcast Reradiation by Power Lines) recommends all AM Broadcast facilities within 10 km (approximately 6.2 miles) are analyzed for the possibility for reradiation.

In addition to the reradiation issue due to the large physical size of the antennas, these structures are typically placed away from heavily populated areas. However, the facility associated with the generation of the signal is typically located closer to populated areas and the signal is uplinked to the broadcast antenna through the use of microwaves. Due to the protection of the broadcast pattern under FCC regulations, the microwave links also require protection. Therefore analyses of the uplinks associated with AM antenna require Phase 2 analysis regardless of the microwave link license status.

Table 1 details all AM broadcast facilities that will require Phase 2 analysis in the form of AN, RI TVI, and AM Reradiation analysis outlined above.

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Table 1: AM Broadcast Facilities Located Within 10 km AM BROADCAST FACILITIES FACILITY NEAREST LINE SEGMENTS PHASE 2 ANALYSIS REQUIRED

WHFA - 1240 kHz, AM Station E Yes WPDR - 1350 kHz, AM Station I/H Yes WDLS - 900 kHz, AM Station I/H Yes WRJC - 1270 kHz, AM Station N Yes WKLJ - 1290 kHz, AM Station N Yes WLFN - 1490 kHz, AM Station O Yes WKBH - 1570 kHz, AM Station N Yes WBOG - 1460 kHz, AM Station N Yes WWIS - 1260 kHz, AM Station N Yes 4.1.2 FM Facilities As discussed earlier, due to the broadcast technique associated with FM broadcast and the frequency range of operation, minimal impact is associated with positive and negative corona noise. Therefore, FM facilities requiring Phase 2 analysis were identified solely based upon the criteria of microwaves crossing the path of the transmission line. Any facility identified below as requiring Phase 2 analysis will require detailed microwave line-of-site analysis. Table 2 below outlines the specific antennas.

Table 2: FM Broadcast Facilities Located Within 10 km FM BROADCAST FACILITIES FACILITY NEAREST LINE SEGMENTS PHASE 2 ANALYSIS REQUIRED

WERN - 88.7 MHz, FM Station A/B No WORT - 89.9 MHz, FM Station A/B No WMAD - 96.3 MHz, FM Station D Yes WIDE-LP - 99.1 MHz, FM Station A/B No WIBA-FM - 101.5 MHz, FM Station A/B No W270AU - 101.9 MHz, FM Station A/B No WNMC-FM - 102.5 MHz, FM Station A/B No W277AE - 103.3 MHz, FM Station A/B No WZEE - 104.1 MHz, FM Station A/B No WWQM-FM - 106.3 MHz, FM Station A/B No W215AQ - 90.9 MHz, FM Station A/B No 951005MA - 93.1 MHz, FM Station E/F No WMHX - 105.1 MHz, FM Station E/F No

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FM BROADCAST FACILITIES FACILITY NEAREST LINE SEGMENTS PHASE 2 ANALYSIS REQUIRED

WDDC - 100.1 MHz, FM Station I/H Yes WNNO - 106.9 MHz, FM Station I/H No W290AL - 105.9 MHz, FM Station H Yes WRJC-FM - 92.1 MHz, FM Station N No W225BF - 92.9 MHz, FM Station N No WCOW-FM - 97.1 MHz, FM Station O No K220EP - 91.9 MHz, FM Station O No WIZM-FM - 93.3 MHz, FM Station O No WKBH-FM - 100.1 MHz, FM Station O No WQCC - 106.3 MHz, FM Station O No WFBZ - 105.5 MHz, FM Station N Yes KHME - 101.1 MHz, FM Station N Yes WTMB - 94.5 MHz, FM Station N No W214BS - 90.7 MHz, FM Station N No WWIS-FM - 99.7 MHz, FM Station N No 4.1.3 TV Facilities As television broadcast can be susceptible to foul-weather corona inference, it is recommended that Phase 2 analysis is performed for all television stations identified along the segment. Phase 2 analyses will require detailed TVI calculations and pre-energization measurements of signal strength to determine a signal-to-noise ratio associated with the primary coverage area of each station. Table 3 below outlines the specific antennas.

Table 3: TV Broadcast Facilities Located Within 10 km TV BROADCAST FACILITIES FACILITY NEAREST LINE SEGMENTS PHASE 2 ANALYSIS REQUIRED

WMTV - Channel 19, TV Station A/B Yes WHA-TV - Channel 20, TV Station A/B Yes W23BW - Channel 23, TV Station A/B Yes WKOW - Channel 26, TV Station A/B Yes WBUW - Channel 32, TV Station A/B Yes WMWD-LD - Channel 38, TV Station A/B Yes WMSN-TV - Channel 11, TV Station A/B Yes WISC-TV - Channel 50, TV Station A/B Yes K28MV-D - Channel 28, TV Station P Yes

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TV BROADCAST FACILITIES FACILITY NEAREST LINE SEGMENTS PHASE 2 ANALYSIS REQUIRED

W34EB-D - Channel 34, TV Station P Yes K36MW-D - Channel 36, TV Station P Yes W45DM-D - Channel 45, TV Station P Yes W46EP-D - Channel 46, TV Station P Yes WKBT-DT - Channel 8, TV Station N Yes W19DP-D - Channel 19, TV Station N Yes W21DC-D - Channel 21, TV Station N Yes W22DT-D - Channel 22, TV Station N Yes W28DT-D - Channel 28, TV Station N Yes W33DG-D - Channel 33, TV Station N Yes

4.2 Additional Communication Facilities Additional communications facilities were found throughout the area associated with the proposed Badger Coulee 345 kV transmission Line. Therefore, to ensure FCC provided protection is met, verification was based upon the FCC database, the field visit performed by POWER, and/or additional information provided by ATC for each antenna site. A detailed survey of the antennas surrounding both routes at a distance of no less than 10 km was performed to verify the number of communication structures located on the antenna and direction of operation. Refer to Table 4 below for a detailed listing of FCC licensed structures found in the area associated with proposed Badger Coulee 345 kV transmission line structures. At many locations, multiple microwave antennas operate on the same antenna structure. Therefore, the total number of microwave structures listed in Table 4 does not reflect the actual number of microwave antennas in the entire area but rather the number of microwave structures.

During field investigations, additional sites with communications systems that are unlicensed and are not protected under FCC guidelines were identified. While these sites are not detailed in this report, they have been noted and POWER recommends that detailed analysis is performed on a case by case basis once a final route has been selected. These sites should be investigated under owner request and agreement between the owner and ATC.

While every attempt was made to ensure completeness, some facilities utilizing licensed microwave communication may be identified as communicating with a direct path over the proposed Badger Coulee 345 kV transmission line. If such facilities are found to exist, POWER recommends that a detailed analysis be completed to ensure line-of-sight interference does not exist.

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Table 4: Additional Communication Antennas Located Within 10 km ADDITIONAL STRUCTURES NEAREST PHASE 2 ANALYSIS ADDRESS TYPE OF ANTENNA LINE REQUIRED SEGMENTS W 5159 ST HWY 16 Onalaska, WI 54650 Cell Tower O No SE 1/4 OF THE SE 1/4 OF SECTION 8, LACROSSE COUNTY ONALASKA , WI Cell Tower O No ON STATE HWY 35, 0.1 MILE NORTH OF KRAMER RD La Crosse Radio ONALASKA , WI Broadcast Facility O Yes 5538 Abbey Road Onalaska , WI Cell Tower O Yes* 1.9 MI N ‐ 2.8MI NE ON COUNTY BNSF Railway ONALASKA , WI Microwave Facility O Yes W6639 Raptor Dr Holmen , WI Cell/Microwave Tower O Yes W7937 County Trunk Hwy MH (HOLMEN 120010374) HOLMEN , WI Cell Tower P No W7895 Hwy NA Holmen , WI Cell/Microwave Tower P No N15885 Hodgen Rd GALESVILLE , WI Cell/Microwave Tower P Yes N23 Amoth Lane Ettrick , WI Cell/Microwave Tower N Yes W15111 Chenoweth Lane Blair , WI Cell/Microwave Tower N Yes .5 MI S Dairy Land Power WHITEHALL , WI Control Facility N No 4.8 KM NW Xcel Energy Control HIXTON , WI Facility N No 0N8820 County Rd FF Hixton , WI Cell Tower N No SR 21 & Hwy M Camp Douglas , WI Cell Tower N No 801 BARBER BLVD. WARRENS , WI Cell Tower N No Whitney Rd 1 mi N of Hwy O National Guard Millston , WI Antenna N Yes * Phase 2 analysis is recommended for grounding concerns as these structures were found to be less than 500’ from the new 345 kV Transmission Line

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ADDITIONAL STRUCTURES NEAREST PHASE 2 ANALYSIS ADDRESS TYPE OF ANTENNA LINE REQUIRED SEGMENTS WARRENS SITE: 22717 ASPEN AVENUE WARRENS , WI Cell/Microwave Tower N Yes* 1583 ARM ROAD WARRENS , WI Cell/Microwave Tower N No EAST 4TH STREET AND PARK AVENUE Water Tower Radio BLACK RIVER FALLS , WI Antenna N No 301 East Lincoln Road Black River Falls , WI Cell Tower N No N8150 W Snow Creek Rd ALMA CENTER , WI Cell/Microwave Tower N Yes N8150 W SNOW CREEK RD ALMA , WI Microwave Tower N Yes 4.8 MI S Rose Hill Road HIXTON , WI Microwave Tower N Yes W10690 Lunda Avenue Black River Falls , WI Black River Airport N No N4402 Lambert Road Millston , WI Cell/Microwave Tower N Yes 4.4 MILES NW ON I‐94 Millston , WI Cell/Microwave Tower N Yes 1.3 MI WSW OF SR G & 21ST ST. TUNNEL CITY , WI Cell Tower N No 20607 GLIDER AVENUE TOMAH , WI Cell Tower N No HIGHWAY 12&16 OAKDALE, JUNEAU COUNTY Oakdale , WI Cell Tower N No I 90 TO HWY 12, GO 1/8 MILE EAST ON HWY 12 TOMAH , WI Cell Tower N Yes OAKDALE SITE: 29792 GROSBEAK AVENUE TOMAH , WI Cell Tower N No North of Jefferson Street Tomah , WI Cell/Microwave Tower N No 23508 CTY HWY ET TOMAH , WI Radio Antenna N No * Phase 2 analysis is recommended for grounding concerns as these structures were found to be less than 500’ from the new 345 kV Transmission Line

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ADDITIONAL STRUCTURES NEAREST PHASE 2 ANALYSIS ADDRESS TYPE OF ANTENNA LINE REQUIRED SEGMENTS EMERSON ROAD TOMAH , WI Cell Tower N Yes 23928 Lester McMullan Drive State Patrol Tomah , WI Microwave Tower N No NEAR HWY 131, 5 MILES SE OF TOMAH , WI Microwave Tower N No ON CTH A APPROX 2.25 MI E INT WITH STH 131 5 MI SE TOMAH WI TOMAH , WI Cell/Microwave Tower N Yes Camp Hill Road Camp Douglas , WI Cell Tower N No Camp Douglas Fire Station Camp Camp Douglas Fire Douglas , WI Dispatch N No Bluff Dr Volk Field Camp Douglas Camp Douglas , WI Microwave Tower N Yes Approximately One Mile South of Volk Field Camp Douglas , WI Camp Douglas Radar N No Camp Douglas Cell Site Camp Douglas Cell Camp Douglas , WI Tower N No N7161 6th Avenue New Lisbon , WI Cell/Microwave Tower N Yes ON HWY 12 & 16 .5 MI W NEW LISBON , WI Microwave Tower N No 820 SOUTH WASHINGTON NEW LISBON , WI Microwave Tower N No 1 MILE BLUFF MAUSTON , WI Cell/Microwave Tower N Yes End of Pfaff Road Mauston , WI Microwave Tower N Yes 1700 Bridge Street NEW LISBON , WI Cell/Microwave Tower N Yes N5993 Highway HH Mauston , WI Cell/Microwave Tower N Yes 3671 SR 13 (WI14594‐B) Wisconsin Dells , WI Cell/Microwave Tower K Yes N1357 CR N ‐ Juneau County Wisconsin Dells , WI Cell/Microwave Tower K Yes * Phase 2 analysis is recommended for grounding concerns as these structures were found to be less than 500’ from the new 345 kV Transmission Line

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ADDITIONAL STRUCTURES NEAREST PHASE 2 ANALYSIS ADDRESS TYPE OF ANTENNA LINE REQUIRED SEGMENTS WISCONSIN DELLS SITE: W391 60TH STREET WISCONSIN DELLS , WI Cell Tower J No 1490‐C HIGHWAY 82 WISCONSIN DELLS , WI Cell/Microwave Tower N Yes 320 UNITY DRIVE WISCONSIN DELLS , WI Cell Tower I/H No S2115 COUNTY ROAD A DELTON , WI Cell Tower H/I No 51915 ISHNALA ROAD WISCONSIN DELLS , WI Cell Tower H/I No N OF W15077 HWY WD WISCONSIN DELLS , WI Cell Tower I/H No 4116 County Road G Wisconsin Dells , WI Cell/Microwave Tower I/J Yes N9869 ANACKER RD PORTAGE , WI Cell/Microwave Tower I/H Yes ENDEAVOR SITE: N1081 COUNTY ROAD CX ENDEAVOR , WI Cell Tower I No W5590 County Rd. O Endeavor , WI Cell Tower I No N9501 County Rd CX (310673) Portage , WI Cell/Microwave Tower I/H Yes 430 E ALBERT ST PORTAGE , WI Cell Tower I/H No 428 E. Albert St Portage , WI Cell Tower I/H No W10536 CTH O Portage , WI Cell Tower I/H Yes* N5815 CTY "U" PORTAGE , WI Microwave Tower H/I Yes N5815 COUNTY HIGHWAY U PORTAGE , WI Cell/Microwave Tower I/G Yes Near W7954 State Road 16 Pardeeville , WI Cell Tower I/G No W8261 CTH J‐V Poynette , WI Cell Tower G No * Phase 2 analysis is recommended for grounding concerns as these structures were found to be less than 500’ from the new 345 kV Transmission Line

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ADDITIONAL STRUCTURES NEAREST PHASE 2 ANALYSIS ADDRESS TYPE OF ANTENNA LINE REQUIRED SEGMENTS W9582 Earnie Road Poynette , WI Cell/Microwave Tower G Yes Van Etten Property Dekorra , WI Van Etten Cell Tower E/F Yes* W7301 King Rd Poynette , WI Cell/Microwave Tower E/F Yes N2898 Smokey Hollow Road Poynette , WI Cell/Microwave Tower E/F Yes N1306 PINE HOLLOW ROAD ARLINGTON , WI Cell Tower E/F No 7622 WILLBUR RD DE FOREST , WI Cell Tower E/F No CTY "DM" AND PATTON ROAD DEFOREST , WI Cell/Microwave Tower E/F Yes 911 W NORTH ST DE FOREST , WI Microwave Tower E/F Yes 4420 DURAFORM LANE WINDSOR , WI Cell Tower C/E No South Division Street Waunakee , Waunakee Water WI Tower Cell Service C/D No 417 E Verleen Ave Waunakee Blue Water Waunakee , WI Tower Microwaves C/D No 6207 BARMAN RD WAUNAKEE , WI Cell Tower D/C No 5082 Bong Road Westport Township , WI Cell Tower C/D No 5140 BONG ROAD WAUNAKEE , WI Cell/Microwave Tower C/D No 5140 BONG ROAD WAUNAKEE , WI Cell/Microwave Tower C/D No NW 1/4 of the NE 1/4 of Section 30 Ashton Corners , WI Cell Tower C/A No 6918 MEFFERT ROAD SPRINGFIELD , WI Cell Tower C/D No W 5159 ST HWY 16 Radio/Microwave ONALASKA , WI Tower O Yes OFF OF KOHLMEIER ROAD Radio/Microwave LA CROSSE , WI Tower O No * Phase 2 analysis is recommended for grounding concerns as these structures were found to be less than 500’ from the new 345 kV Transmission Line

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ADDITIONAL STRUCTURES NEAREST PHASE 2 ANALYSIS ADDRESS TYPE OF ANTENNA LINE REQUIRED SEGMENTS 0.3 MI NORTH OF STATE ROUTE F LA CROSSE , WI 54601 Cell/Microwave Tower O Yes 2247 Enterprise Ave La Crosse WI 54603 Cell Tower O No 1228 12th Ave. Charter Onalaska, WI 54650 Communication O No W3144 CTH B (LACROSSE COUNTY) WEST SALEM , WI Cell/Microwave Tower O No Tower Road, West Salem , WI Cell Tower O No Island Avenue Sparta , WI 54656 Cell/Microwave Tower O Yes W698 MANKE‐HESSELBERG RD. BANGOR , WI Cell Tower O No INT OF I‐90 & HWY 27 N 2.3 MI TO CR B SPARTA , WI Cell/Microwave Tower O Yes 8788 Kansas Ave (311257) Sparta , WI Cell Tower O No 9990 STATE HIGHWAY 33 CASHTON , WI Cell/Microwave Tower O Yes NW 1/4 SW 1/4 Section 3 Ontario , WI Cell/Microwave Tower O Yes 31518 County Hwy P Kendall , WI Cell Tower O No W4498 County Hwy. B West Salem , WI Cell Tower O No 8788 Kansas Ave (311257) Sparta , WI Cell Tower O No 9990 STATE HIGHWAY 33 CASHTON , WI Cell/Microwave Tower O Yes N4985 County Road M West Salem , WI Alliant Energy O No E8062 Ridge Road (Hillsboro) Hillsboro , WI Cell Tower O No * Phase 2 analysis is recommended for grounding concerns as these structures were found to be less than 500’ from the new 345 kV Transmission Line

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ADDITIONAL STRUCTURES NEAREST PHASE 2 ANALYSIS ADDRESS TYPE OF ANTENNA LINE REQUIRED SEGMENTS 1 MILE N. HWY 80 & 1/4 MILE E. OF CTY F HILLSBORO , WI Cell Tower O No S1886 Cty Rd F Hillsboro , WI Cell Tower O No N2355 Plewa Road (Lyndon Station ‐ 120009879) Lyndon Station , WI Cell Tower M No S2115 COUNTY ROAD A DELTON , WI Cell Tower I No E12221 State Hwy 33 (196539172 Baraboo East) Baraboo , WI Cell Tower H No 1/3 MI NW INT W & WALL ST Yes PORTAGE , WI Cell/Microwave Tower H 4.5 Miles SW (Portage #88005) PORTAGE , WI Cell Tower G No W10281 ROWLEY ROAD PORTAGE , WI Cell Tower H No 1 MILE N. HWY 80 & 1/4 MILE E. OF CTY HILLSBORO , WI Microwave Tower G Yes 6524 Simpson Rd Dane , WI Cell Tower D/B No * Phase 2 analysis is recommended for grounding concerns as these structures were found to be less than 500’ from the new 345 kV Transmission Line

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5.0 CONCLUSION The purpose of this Phase 1 investigation was to identify existing communication facilities in the vicinity of the selected line route that may be impacted by the new Badger Coulee 345 kV transmission line. This Phase 1 investigation is intended to validate whether a viable risk is present (not meant to address mitigation techniques). Indication of a risk will result in additional analysis being required, in a Phase 2 investigation.

The conclusions from the Phase 1 assessment indicate that there are communication facilities in close proximity to the new Badger Coulee 345 kV transmission line, which could be impacted by the 345 kV transmission line. The identification of the sites and additional Phase 2 analysis is required as follows: 1. Audible Noise, Radio Interference, and Television Interference: a. At the time of this assessment, calculations predicting the audible noise (AN), Radio Interference (RI), and television interference (TVI) associated with the operation of the Badger Coulee 345 kV transmission line had not been performed. It is recommended that these predictive calculations are made for the selected routes for use in comparison to established standards and regulations. b. It is recommended that pre-energization audible noise measurements are conducted at even intervals along the route to be used for validation of predicted measurements. c. It is recommended that pre-energization pattern measurements for all AM radio and television broadcast facilities within 10 kilometers (approximately 6.2 miles) of the proposed line are conducted at even intervals along the route. This will determine broadcast signal strengths which will then be used for computing signal-to-noise ratios to assess interference from the 345 kV transmission line. 2. AM Reradiation: a. Nine (9) AM Radio antennas were found to be within 10 km of the proposed routes. It is recommended that all nine antennas are analyzed in Phase 2 using the methodologies in IEEE standard 1260-1996 to predict the possibility of AM broadcast reradiation. 3. Microwave Communication Line-of-Sight Interference: a. At the time of assessment, determination for additional analysis was based upon the visual inspection of the azimuth of the licensed microwave systems and the possibility of the communication path crossing the line. Therefore, detailed associated with the identified paths will be required in the Phase 2 analysis. 4. Grounding Analysis: a. Initial investigation identified four (4) licensed communication facilities within approximately 500 feet (established from previous studies threshold, in the State of Wisconsin) of the transmission line, as the facilities that may experience transferred voltages on their associated communication grounding systems. If during Phase 2 analysis the soil composition requires the 500 feet threshold be extended, additional assessment of the antennas may be required to verify adequacy of this recommendation. This requires additional Phase 2 analysis to

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analyze the soil composition in the area for the purpose of identify the specific separation distance required at each of the sites. The additional investigation will require: i. At least one soil measurement traverse to extend a distance equal to the separation distance of the transmission line and each of the four (4) licensed facilities in question at a distance no greater than 500 feet from the proposed line.

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APPENDIX A – PROPOSED TRANSMISSION LINE ROUTES

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Figure 2: Proposed Routes for Briggs Road - North Madison Transmission Line

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Figure 3: Proposed Routes for North Madison – Cardinal Transmission Line

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