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RFSSR.113891.11132020.EBI
AT&T Radio Frequency Safety Survey Report Prediction (RFSSRP) AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Site Name: Aspen Highlands FA#: 10148150 USID: 113891 Site ID: COL04136 Address: 75 Prospector Road Aspen, Colorado 81611 County: Pitkin Latitude: 39.18160280 Longitude: -106.85698060 EBI Project Number: 6220005855 M-RFSC Name: Shad Rydalch Site Structure Type: Rooftop PACE#: MRUTH039693/ MRUTH039696/ MRUTH039698 Prepared For: AT&T Mobility, LLC c/o MD7, LLC 10590 West Ocean Air Drive, Suite 300 San Diego, CA 92130 Report Information: Report Writer: Christopher Ilgenfritz Report Date: November 13, 2020 CDs: 10148150_FCD_REV0_10.26.20 RFDS: 10148150_RFDSCOL04136-Aspen-Highlands_2020-LTE-Next- Carrier_LTE_RS067V_3755A0SX1J_10148150_113891_11-14-2019_Prel Compliance Statement: AT&T Mobility Compliance Statement: Based on the information collected, AT&T Mobility will be Compliant with FCC Rules and Regulations at the nearest walking surface if recommendations in the Compliance Summary are implemented. Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 i AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. TABLE OF CONTENTS 1.0 EXECUTIVE SUMMARY ........................................................................................................... 1 2.0 SIGNAGE AND MITIGATION PLAN ........................................................................................ 3 3.0 ANTENNA INVENTORY .......................................................................................................... 4 4.0 WORST-CASE PREDICTIVE MODELING ................................................................................. 7 5.0 COMPLIANCE SUMMARY ..................................................................................................... 13 6.0 APPENDICES ........................................................................................................................ 14 APPENDIX A: FEDERAL COMMUNICATIONS COMMISSION (FCC) REQUIREMENTS ................. 15 APPENDIX B: AT&T RF EXPOSURE POLICY REQUIREMENTS .................................................. 18 APPENDIX C: AT&T SIGNAGE AND MITIGATION .................................................................... 19 APPENDIX D: LIMITATIONS ...................................................................................................... 20 APPENDIX E: RoofMaster™ .................................................................................................... 21 APPENDIX F: CERTIFICATIONS ................................................................................................ 22 Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 1 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. 1.0 EXECUTIVE SUMMARY EnviroBusiness Inc. (dba EBI Consulting) has been contracted by AT&T Mobility, LLC to conduct radio frequency electromagnetic (RF-EME) modeling for AT&T Site COL04136 located at 75 Prospector Road in Aspen, Colorado to determine RF-EME exposure levels from proposed AT&T wireless communications equipment at this site. As described in greater detail in Appendix A of this report, th e Federal Communications Commission (FCC) has developed Maximum Permissible Exposure (MPE) Limits for general public exposures and occupational exposures. This report summarizes the results of RF-EME modeling in relation to relevant FCC RF-EME compliance standards for limiting human exposure to RF- EME fields. This document addresses the compliance of AT&T’s transmitting facilities independently and in relation to all collocated facilities at the site. 1.1 SITE SUMMARY Recommended Mitigation at the Site: ▪ Access Point(s): o To reduce the risk of exposure and/or injury, EBI recommends that access to the rooftop or areas associated with the active antenna installation be restricted and secured where possible. ▪ Signage at AT&T Mobility Sectors: o A: Yellow CAUTION 2 signs posted below the antennas above the sloped roof. o B: Yellow CAUTION 2 signs posted below the antennas above the sloped roof. o C: Yellow CAUTION 2 signs posted below the antennas above the sloped roof. ▪ Barriers at AT&T Mobility Sectors: o A, B, and C: Barriers are not recommended for this site because the sloped roof significantly limits access by unauthorized persons to areas directly in front of the antennas. However, EBI recommends that AT&T and the landlord take additional measures to ensure that persons accessing the sloped roof (for example, roofers or other maintenance workers) are informed of areas where RF levels exceed the FCC general public limit and made aware that these areas must be avoided to maintain compliance with FCC requirements. Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 2 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Predictive Modeling Results: The maximum predictive power density generated by the antennas is approximately 5,782.36 percent of the FCC’s general public limit (1,156.47 percent of the FCC’s occupational limit) at the main sloped roof level. At ground level, the maximum predictive power density generated by the antennas is approximately 0.56 percent of the FCC’s general public limit (0.112 percent of the FCC’s occupational limit). Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 3 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Yellow CAUTION 2 signs posted below the antennas above the sloped roof. Existing Sign Proposed Sign Installed Sign Yellow CAUTION 2 signs posted below the antennas above the sloped roof. Yellow CAUTION 2 signs posted below the antennas above the sloped roof. 2.0 SIGNAGE AND MITIGATION PLAN Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 4 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. 3.0 ANTENNA INVENTORY An t # Op e r a t o r An t e n n a M a k e An t e n n a M o d e l Fr e q u e n c y ( M H z ) Az i m u t h ( d e g . ) Me c h a n i c a l Do w n t i l t ( d e g . ) Ho r i z o n t a l Be a m w i d t h (D e g r e e s ) Ap e rt u r e ( f e e t ) Po w e r I n p u t (W a t t s ) Tr a n s m i t t e r Co u n t An t e n n a G a i n (d B d ) To t a l E R P (W a t t s ) To t a l E I R P (W a t t s ) 1 ATT POWERWAVE P65-15-XLH-RR 02DT 850 850 20 0 64 4.2 40 2 12.05 611.07 1002.15 1 ATT POWERWAVE P65-15-XLH-RR 01DT 1900 1900 20 0 64 4.2 40 2 13.45 843.51 1383.36 2 ATT CCI TPA65R-BU4D 02DT 700 700 20 0 63 4.0 40 4 10.75 1629.75 2672.78 2 ATT CCI TPA65R-BU4D 02DT 700 700 20 0 63 4.0 40 4 10.75 1629.75 2672.78 2 ATT CCI TPA65R-BU4D 02DT 700 700 20 0 63 4.0 25 2 10.75 509.30 835.24 2 ATT CCI TPA65R-BU4D 02DT 850 850 20 0 65 4.0 40 4 11.15 1758.41 2883.79 2 ATT CCI TPA65R-BU4D 02DT 2100 2100 20 0 60 4.0 45 4 14.45 4229.34 6936.12 3 ATT POWERWAVE P65-15-XLH-RR 02DT 850 850 130 0 64 4.2 40 2 12.05 611.07 1002.15 3 ATT POWERWAVE P65-15-XLH-RR 01DT 1900 1900 130 0 64 4.2 40 2 13.45 843.51 1383.36 4 ATT CCI TPA65R-BU4D 02DT 700 700 130 0 63 4.0 40 4 10.75 1629.75 2672.78 4 ATT CCI TPA65R-BU4D 02DT 700 700 130 0 63 4.0 40 4 10.75 1629.75 2672.78 4 ATT CCI TPA65R-BU4D 02DT 700 700 130 0 63 4.0 25 2 10.75 509.30 835.24 4 ATT CCI TPA65R-BU4D 02DT 850 850 130 0 65 4.0 40 4 11.15 1758.41 2883.79 4 ATT CCI TPA65R-BU4D 02DT 2100 2100 130 0 60 4.0 45 4 14.45 4229.34 6936.12 5 ATT POWERWAVE P65-15-XLH-RR 02DT 850 850 250 0 64 4.2 40 2 12.05 611.07 1002.15 5 ATT POWERWAVE P65-15-XLH-RR 01DT 1900 1900 250 0 64 4.2 40 2 13.45 843.51 1383.36 6 ATT CCI TPA65R-BU4D 02DT 700 700 250 0 63 4.0 40 4 10.75 1629.75 2672.78 6 ATT CCI TPA65R-BU4D 02DT 700 700 250 0 63 4.0 40 4 10.75 1629.75 2672.78 6 ATT CCI TPA65R-BU4D 02DT 700 700 250 0 63 4.0 25 2 10.75 509.30 835.24 6 ATT CCI TPA65R-BU4D 02DT 850 850 250 0 65 4.0 40 4 11.15 1758.41 2883.79 6 ATT CCI TPA65R-BU4D 02DT 2100 2100 250 0 60 4.0 45 4 14.45 4229.34 6936.12 7 Unknown GENERIC PANEL 4FT 00DT 850 850 20 0 61 4.0 100 1 11.52 1419.06 2327.25 8 Unknown GENERIC PANEL 4FT 00DT 1900 1900 20 0 65 4.0 100 1 14.65 2917.43 4784.58 9 Unknown GENERIC PANEL 4FT 00DT 850 850 135 0 61 4.0 100 1 11.52 1419.06 2327.25 10 Unknown GENERIC PANEL 4FT 00DT 1900 1900 135 0 65 4.0 100 1 14.65 2917.43 4784.58 11 Unknown GENERIC PANEL 4FT 00DT 850 850 135 0 61 4.0 100 1 11.52 1419.06 2327.25 12 Unknown GENERIC PANEL 4FT 00DT 1900 1900 135 0 65 4.0 100 1 14.65 2917.43 4784.58 13 Unknown GENERIC PANEL 4FT 00DT 850 850 260 0 61 4.0 100 1 11.52 1419.06 2327.25 Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 5 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. An t # Op e r a t o r An t e n n a M a k e An t e n n a M o d e l Fr e q u e n c y ( M H z ) Az i m u t h ( d e g . ) Me c h a n i c a l Do w n t i l t ( d e g . ) Ho r i z o n t a l Be a m w i d t h (D e g r e e s ) Ap e rt u r e ( f e e t ) Po w e r I n p u t (W a t t s ) Tr a n s m i t t e r Co u n t An t e n n a G a i n (d B d ) To t a l E R P (W a t t s ) To t a l E I R P (W a t t s ) 14 Unknown GENERIC PANEL 4FT 00DT 1900 1900 260 0 65 4.0 100 1 14.65 2917.43 4784.58 • Note there are 2 AT&T panel antennas per sector at this site. For clarity, the different frequencies for each antenna are entered on separate lines. • Note that EBI uses an assumed set of antenna specifications and powers for unknown and other carrier antennas for modeling purposes. Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 6 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Ant # NAME X Y Antenna Radiation Centerline Z-Height Main Sloped Roof Z-Height Mid Sloped Roof Z-Height Lower Sloped Roof Z-Height Ground 1 ATT 161.3 83.5 62.5 3.4 5.9 17.9 60.4 2 ATT 166.2 84.6 62.5 3.5 6.0 18.0 60.5 3 ATT 103.4 131.5 62.5 3.4 5.9 17.9 60.4 4 ATT 100.1 134.0 62.5 3.5 6.0 18.0 60.5 5 ATT 96.5 133.4 62.5 3.4 5.9 17.9 60.4 6 ATT 94.3 130.1 62.5 3.5 6.0 18.0 60.5 7 Unknown 117.7 98.7 63.5 4.5 7.0 19.0 61.5 8 Unknown 121.0 99.5 63.5 4.5 7.0 19.0 61.5 9 Unknown 167.3 91.0 63.5 4.5 7.0 19.0 61.5 10 Unknown 163.5 93.5 63.5 4.5 7.0 19.0 61.5 11 Unknown 151.1 119.9 63.5 4.5 7.0 19.0 61.5 12 Unknown 146.7 123.2 63.5 4.5 7.0 19.0 61.5 13 Unknown 41.6 116.6 50.5 -8.5 -6.0 6.0 48.5 14 Unknown 39.1 113.0 50.5 -8.5 -6.0 6.0 48.5 Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 7 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. 4.0 WORST-CASE PREDICTIVE MODELING In accordance with AT&T’s RF Exposure policy, EBI performed theoretical modeling using RoofMaster™ software to estimate the worst-case power density at the site rooftop and ground-level and nearby rooftops resulting from operation of the antennas. For this report, EBI utilized antenna and power data provided by AT&T and compared the resultant worst- case MPE levels to the FCC’s occupational/controlled exposure limits outlined in OET Bulletin 65. The assumptions used in the modeling are based upon information provided by AT&T and information gathered from other sources. An unknown carrier also has antennas on the rooftop. Information about these antennas was included in the modeling analysis. Per AT&T’s corporate policy, the FCC’s general population limits are applicable to all rooftop sites, regardless of the level of access control. Based on worst-case predictive modeling, the worst-case emitted power density may exceed the FCC’s general public limit within approximately 46 feet of AT&T’s Sector A, B, and C antennas at the main sloped roof level. Modeling also indicates that the worst-case emitted power density may exceed the FCC’s occupational limit within approximately 18 feet of AT&T’s Sector A, B, and C antennas at the main sloped roof level. Modeling also indicates that the worst-case emitted power density may exceed ten times the FCC’s occupational limit within approximately 1 foot of AT&T’s Sector A, B, and C antennas at the main sloped roof level. At the nearest walking/working surfaces to the AT&T antennas on the main sloped roof level, the maximum power density generated by the AT&T antennas is approximately 5,782.35 percent of the FCC’s general public limit (1,156.47 percent of the FCC’s occupational limit). The composite exposure level from all carriers on this site is approximately 5,782.36 percent of the FCC’s general public limit (1,156.47 percent of the FCC’s occupational limit) at the nearest walking/working surface to each antenna. Based on worst-case predictive modeling, there are no areas at ground/street level related to the proposed AT&T antennas that exceed the FCC’s occupational or general public exposure limits at this site. At ground/street level, the maximum power density generated by the antennas is approximately 0.56 percent of the FCC’s general public limit (0.112 percent of the FCC’s occupational limit). There were also worst-case predicted exposures above the general public MPE in front of the unknown carrier antennas. Modeling indicates that the AT&T contribution to these areas is greater than 5% of the general public MPE and, as such, under FCC regulations, AT&T is responsible for these predicted exceedances. Microwave dish antennas are designed for point-to-point operations at the elevations of the installed equipment rather than ground-level coverage. Based on AT&T’s RF Exposure: Responsibilities, Procedures & Guidelines document, dated October 28, 2014, microwave antennas are considered compliant if they are higher than 20 feet above any accessible walking/working surface. There are no microwaves installed at this site. Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 8 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Main Sloped Roof Level (57 feet AGL) Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 9 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Mid Sloped Roof Level (54.5 feet AGL) Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 10 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Lower Sloped Roof Level (42.5 feet AGL) Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 11 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Ground Level (0 feet AGL) Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 12 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. AT&T Contribution of More Than 5% of the FCC’s General Exposure RF Limit Note that the areas shown in purple are where AT&T antennas contribute more than 5% of the FCC’s general exposure RF limit. These do overlap areas in front of other carrier antennas exceeding the FCC’s general exposure RF limit as shown in Figure 1. Under FCC regulations, AT&T is therefore responsible for predicted exceedances of another carrier’s antennas. Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 13 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. 5.0 COMPLIANCE SUMMARY Based on the information collected, AT&T Mobility will be Compliant with FCC Rules and Regulations at the nearest walking surface if recommendations in the Compliance Summary are implemented. The following mitigation measures are recommended for this site. ▪ Access Point(s): o To reduce the risk of exposure and/or injury, EBI recommends that access to the rooftop or areas associated with the active antenna installation be restricted and secured where possible. ▪ AT&T Mobility Sectors: o Sector A: ▪ Yellow CAUTION 2 signs posted below the antennas above the sloped roof. o Sector B: ▪ Yellow CAUTION 2 signs posted below the antennas above the sloped roof. o Sector C: ▪ Yellow CAUTION 2 signs posted below the antennas above the sloped roof. Mitigation Notes: Barriers are not recommended for this site because the sloped roof significantly limits access by unauthorized persons to areas directly in front of the antennas. However, EBI recommends that AT&T and the landlord take additional measures to ensure that persons accessing the sloped roof (for example, roofers or other maintenance workers) are informed of areas where RF levels exceed the FCC general public limit and made aware that these areas must be avoided to maintain compliance with FCC requirements. Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 14 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. 6.0 APPENDICES Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 15 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Appendix A: FEDERAL COMMUNICATIONS COMMISSION (FCC) REQUIREMENTS The FCC has established Maximum Permissible Exposure (MPE) limits for human exposure to Radiofrequency Electromagnetic (RF-EME) energy fields, based on exposure limits recommended by the National Council on Radiation Protection and Measurements (NCRP) and, over a wide range of frequencies, the exposure limits developed by the Institute of Electrical and Electronics Engineers, Inc. (IEEE) and adopted by the American National Standards Institute (ANSI) to replace the 1982 ANSI guidelines. Limits for localized absorption are based on recommendations of both ANSI/IEEE and NCRP. The FCC guidelines incorporate two separate tiers of exposure limits that are based upon occupational/controlled exposure limits (for workers) and general public/uncontrolled exposure limits for members of the general public. Occupational/controlled exposure limits apply to situations in which persons are exposed as a consequence of their employment and in which those persons who are exposed have been made fully aware of the potential for exposure and can exercise control over their exposure. Occupational/ controlled exposure limits also apply where exposure is of a transient nature as a result of incidental passage through a location where exposure levels may be above general public/uncontrolled limits (see below), as long as the exposed person has been made fully aware of the potential for exposure and can exercise control over his or her exposure by leaving the area or by some other appropriate means. General public/uncontrolled exposure limits apply to situations in which the general public may be exposed or in which persons who are exposed as a consequence of their employment may not be made fully aware of the potential for exposure or cannot exercise control over their exposure. Therefore, members of the general public would always be considered under this category when exposure is not employment-related, for example, in the case of a telecommunications tower that exposes persons in a nearby residential area. Table 1 and Figure 1 (below), which are included within the FCC’s OET Bulletin 65, summarize the MPE limits for RF emissions. These limits are designed to provide a substantial margin of safety. They vary by frequency to take into account the different types of equipment that may be in operation at a particular facility and are “time-averaged” limits to reflect different durations resulting from controlled and uncontrolled exposures. The FCC’s MPEs are measured in terms of power (mW) over a unit surface area (cm2). Known as the power density, the FCC has established an occupational MPE of 5 milliwatts per square centimeter (mW/cm2) and an uncontrolled MPE of 1 mW/cm2 for equipment operating in the 1900 MHz frequency range. For the AT&T equipment operating at 700 MHz, the FCC’s occupational MPE limit is 2.33 mW/cm2 and an uncontrolled MPE limit of 0.47 mW/cm2. For the AT&T equipment operating at 1900 MHz, the FCC’s occupational MPE is 5.0 mW/cm2 and an uncontrolled MPE limit of 1.0 mW/cm2. These limits are considered protective of these populations. Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 16 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Table 1: Limits for Maximum Permissible Exposure (MPE) (A) Limits for Occupational/Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm2) Averaging Time [E]2, [H]2, or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842/f 4.89/f (900/f2)* 6 30-300 61.4 0.163 1.0 6 300-I,500 -- -- f/300 6 1,500-100,000 -- -- 5 6 (B) Limits for General Public/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm2) Averaging Time [E]2, [H]2, or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f2)* 30 30-300 27.5 0.073 0.2 30 300-I,500 -- -- f/1,500 30 1,500-100,000 -- -- 1.0 30 f = Frequency in (MHz) * Plane-wave equivalent power density Based on the above, the most restrictive thresholds for exposures of unlimited duration to RF energy for several personal wireless services are summarized below: Po w e r D e n s i t y ( m W / c m 2) Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 17 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Personal Wireless Service Approximate Frequency Occupational MPE Public MPE Microwave (Point-to-Point) 5,000 - 80,000 MHz 5.00 mW/cm2 1.00 mW/cm2 Broadband Radio (BRS) 2,600 MHz 5.00 mW/cm2 1.00 mW/cm2 Wireless Communication (WCS) 2,300 MHz 5.00 mW/cm2 1.00 mW/cm2 Advanced Wireless (AWS) 2,100 MHz 5.00 mW/cm2 1.00 mW/cm2 Personal Communication (PCS) 1,950 MHz 5.00 mW/cm2 1.00 mW/cm2 Cellular Telephone 870 MHz 2.90 mW/cm2 0.58 mW/cm2 Specialized Mobile Radio (SMR) 855 MHz 2.85 mW/cm2 0.57 mW/cm2 Long Term Evolution (LTE) 700 MHz 2.33 mW/cm2 0.47 mW/cm2 Most Restrictive Frequency Range 30-300 MHz 1.00 mW/cm2 0.20 mW/cm2 MPE limits are designed to provide a substantial margin of safety. These limits apply for continuous exposures and are intended to provide a prudent margin of safety for all persons, regardless of age, gender, size, or health. Personal Communication (PCS) facilities used by AT&T in this area operate within a frequency range of 700-1900 MHz. Facilities typically consist of: 1) electronic transceivers (the radios or cabinets) connected to wired telephone lines; and 2) antennas that send the wireless signals created by the transceivers to be received by individual subscriber units (PCS telephones). Transceivers are typically connected to antennas by coaxial cables. Because of the short wavelength of PCS services, the antennas require line -of-site paths for good propagation, and are typically installed above ground level. Antennas are constructed to concentrate energy towards the horizon, with as little energy as possible scattered towards the ground or the sky. This design, combined with the low power of PCS facilities, generally results in no possibility for exposure to approach Maximum Permissible Exposure (MPE) levels, with the exception of areas directly in front of the antennas. FCC Compliance Requirement A site is considered out of compliance with FCC regulations if there are areas that exceed the FCC exposure limits and there are no RF hazard mitigation measures in place. Any carrier which has an installation that contributes more than 5% of the applicable MPE must participate in mitigating these RF hazards. Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 18 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Appendix B: AT&T RF EXPOSURE POLICY REQUIREMENTS AT&T’s RF Exposure: Responsibilities, Procedures & Guidelines document, dated May 27, 2015, requires that: 1. All sites must be analyzed for RF exposure compliance; 2. All sites must have that analysis documented; and 3. All sites must have any necessary signage and barriers installed. Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 19 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Appendix C: AT&T SIGNAGE AND MITIGATION SIgns are the primary means for control of access to areas where RF exposure levels may potentially exceed the MPE. As presented in the AT&T guidance document, the signs must: ▪ Be posted at a conspicuous point; ▪ Be posted at the appropriate locations; ▪ Be readily visible; and ▪ Make the reader aware of the potential risks prior to entering the affected area. The table below presents the signs that may be used for AT&T installations. CRAN / HETNET Small Cell Decals / Signs Alerting Signs STONEHOUSE NOTICE DECAL TRILINGUAL NOTICE NOTICE 2 STONEHOUSE NOTICE SIGN CAUTION 2 – ROOFTOP CAUTION 2A STONEHOUSE CAUTION DECAL CAUTION 2B - TOWER CAUTION 2C - PARAPETS STONEHOUSE CAUTION SIGN WARNING 1B WARNING 2A Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 20 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Appendix D: LIMITATIONS This report was prepared for the use of AT&T Mobility, LLC to meet requirements outlined in AT&T’s corporate RF safety guidelines. It was performed in accordance with generally accepted practices of other consultants undertaking similar studies at the same time and in the same locale under like circumstances. The conclusions provided by EBI are based solely on the information provided by the client. The observations in this report are valid on the date of the investigation. Any additional information that becomes available concerning the site should be provided to EBI so that our conclusions may be revised and modified, if necessary. This report has been prepared in accordance with Standard Conditions for Engagement and authorized proposal, both of which are integral parts of this report. No other warranty, expressed or implied, is made. Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 21 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Appendix E: RoofMaster™ RoofMaster™ is a widely-used predictive modeling program that has been developed to predict RF power density values for rooftop and tower telecommunications sites produced by vertical collinear antennas that are typically used in the cellular, PCS, paging and other communications services. Using the computational methods set forth in Federal Communications (FCC) Office of Engineering & Technology (OET) Bulletin 65, “Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields” (OET-65), RoofMaster™ calculates predicted power density in a scalable grid based on the contributions of all RF sources characterized in the study scenario. At each grid location, the cumulative power density is expressed as a percentage of the FCC limits. Manufacturer antenna pattern data is utilized in these calculations. RoofMaster™ models consist of the Far Field model as specified in OET-65 and an implementation of the OET-65 Cylindrical Model (Sula9). The models utilize several operational specifications for different types of antennas to produce a plot of spatially-averaged power densities that can be expressed as a percentage of the applicable exposure limit. Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 22 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Appendix F: CERTIFICATIONS Site Name: Aspen Highlands Site USID: 113891 Site FA: 10148150 23 AT&T Proprietary (Internal use only). Not for use or disclosure outside the AT&T companies, except under written agreement. ©2020 AT&T Intellectual property. All rights reserved. Preparer Certification I, Christopher Ilgenfritz, state that: ▪ I am an employee of EnviroBusiness Inc. (d/b/a EBI Consulting), which provides RF-EME safety and compliance services to the wireless communications industry. ▪ I have successfully completed RF-EME safety training, and I am aware of the potential hazards from RF-EME and would be classified “occupational” under the FCC regulations. ▪ I am fully aware of and familiar with the Rules and Regulations of both the Federal Communications Commissions (FCC) and the Occupational Safety and Health Administration (OSHA) with regard to Human Exposure to Radio Frequency Radiation. ▪ I have been trained in on the procedures outlined in AT&T’s RF Exposure: Responsibilities, Procedures & Guidelines document (dated October 28, 2014) and on RF-EME modeling using RoofMaster™ modeling software. ▪ I have reviewed the data provided by the client and incorporated it into this Site Compliance Report such that the information contained in this report is true and accurate to the best of my knowledge.