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T-Mobile Rooftop Installation-October 2020
Design Review Board Recommendation 27 Charter Street Small Project Review – Installation of additional telecommunications equipment on rooftop and side of building Meeting Date: October 21, 2020 Members Present: Paul Durand, Chair, David Jaquith, Glenn Kennedy, Catherine Miller, Marc Perras, Helen Sides, J. Michael Sullivan Members Absent: None Decision: At a regular meeting of the Design Review Board (DRB), upon a motion duly made and seconded, it was unanimously voted to recommend approval of the proposed installation of additional telecommunications equipment on the rooftop and the side of the building at 27 Charter Street as designed and conditioned herein. Referenced Plans and Documents 1. Plan set prepared by Advanced Engineering Group, P.C., 500 North Broadway, East Providence, RI 02914, revised to 7/18/19. 2. Series of photographs of the property and existing conditions submitted by Brittany Tiano, Centerline Communications, 750 West Center Street, Floor 3, West Bridgewater, MA 02379. 3. Radio Frequency Emissions Analysis Report, prepared by Centerline Communications, 750 West Center Street, Floor 3, West Bridgewater, MA 02379. 4. Staff Comments dated 10/14/20. Conditions of Approval: The DRB recommends incorporating the following condition: 1. Consistency with Approved Design/Plans: Should the applicant determine that the project may not be completed as presented and conditioned herein, he/she/they shall return to the DRB to review proposed modifications prior to making any changes in the field. 2. Placement of New Antenna: The antenna proposed for the façade of the building should be centered between the corner of the building and the balconies. 3. Appearance of Telecommunications Equipment: The new antenna should match the existing ones in appearance, i.e. wrapped in the faux brick film. Any new equipment that extends upward above the roofline of the building should be black to minimize its visibility. Findings 1. Consistency with Design Standards and Guidelines: This project is as consistent with the design guidelines and standards as it can be through the minimization of equipment that is installed on the façade of the building, and the locating of additional cabinets within existing, rooftop infrastructure. 2. Minimal Visual Impact: The only noticeable change to the building will be the additional antenna that hangs over the roof onto the façade. Through centering the antenna in the space, treating it in the same way the others are treated (wrapping it in the faux brick film), and its location at the top of one of the tallest buildings in downtown Salem, the new equipment will have a minimal visual impact on the building. Signature of the DRB: By the signature below, I certify that this recommendation accurately reflects the actions of the Design Review Board. _______________________________________ _________ Paul Durand Date Chair 10/22/2020 Additional Applicant Info Project Information Signature Attachments (12) SRA-Urban Renewal Area - Small Project Review SRA-20-1 Status: Active Submitted: Oct 01, 2020 Applicant Brittany Tiano 203-219-0953 btiano@clinellc.com Location 27 CHARTER STREET SALEM, MA 01970 Is the owner the applicant? -- Owner Salem Housing Authority Is there more than one owner? -- Who is the point of contact for this application? Brittany Tiano Owner Email Address -- Owner Phone Number Carol MacGown 978-744-4431 Project Description Rooftop telecommunications upgrade per attached construction drawings. T-Mobile will be removing 2 antennas and installing 3 new antennas. Adding (3) RRU's, (1) power cabinet, and adding a total of (9) cables. Antenna heights at 115 ft and 128 ft. Existing Structure's Square Footage 160 Proposed Structure's Square Footage 160 Is there a proposed change to the existing structure's footprint? false Square Footage Change 0 Estimated time schedule for completing project Start construction end of November, complete by mid December. Does your project propose a change(s) to the existing site plan? true Does your project propose landscaping changes? -- Does your project propose public art? -- Does your project propose a change to the building's facade? -- Digital Signature true Photographs Oct 01, 2020 4BSM002A L600 Alpha Mount_View.jpg Oct 01, 2020 4BSM002A Alpha View.jpg Oct 01, 2020 4BSM002A L600 Beta Mount_View.jpg Oct 01, 2020 4BSM002A L600 Crane Location_Cab Swap.jpg Oct 01, 2020 4BSM002A L600 Equipment Area.jpg Oct 01, 2020 4BSM002A L600 Gamma Mount_View.jpg Oct 01, 2020 4BSM002A L600 Gamma View.jpg Oct 01, 2020 pdf pdf pdf pdf Existing Site Plan Oct 01, 2020 Proposed Site Plan Oct 01, 2020 Existing Building Elevations Oct 01, 2020 Paint Specifications Oct 01, 2020 Timeline Application Review Status: In Progress Assignee: Kathryn Newhall-Smith Project Approval Status: In Progress SITE NAME: SALEM HOUSING AUTHORITYSITE NUMBER: 4BSM002A500 North Broadway Phone: (401) 354-2403East Providence, RI 02914Fax: (401) 633-6354Civil Engineering - Site Development - Surveying - TelecommunicationsENGINEERING GROUP, P.C.ADVANCED555555555T-1 TITLE SHEETGN-1 GENERAL NOTESA-1 ROOF & EQUIPMENT PLANSA-2 ELEVATION & EQUIPMENT SCHEDULEA-3ALPHA & BETA ANTENNA PLANSA-4 GAMMA ANTENNA PLANS A-5DETAILSS-1STRUCTURAL DETAILSG-1 GROUNDING, ONE-LINE DIAGRAM & DETAILSPROJECT INFORMATIONDRAWING INDEXREVGENERAL NOTESLOCUS MAPSIGNATUREST-1PROJECTSITEUNDERGROUND SERVICE ALERTSITE NAME: SALEM HOUSING AUTHORITYSITE NUMBER: 4BSM002A SITE NAME: SALEM HOUSING AUTHORITYSITE NUMBER: 4BSM002A500 North Broadway Phone: (401) 354-2403East Providence, RI 02914Fax: (401) 633-6354Civil Engineering - Site Development - Surveying - TelecommunicationsENGINEERING GROUP, P.C.ADVANCEDABBREVIATIONSGN-1GENERAL NOTESELECTRICAL AND GROUNDING NOTES SITE NAME: SALEM HOUSING AUTHORITYSITE NUMBER: 4BSM002A500 North Broadway Phone: (401) 354-2403East Providence, RI 02914Fax: (401) 633-6354Civil Engineering - Site Development - Surveying - TelecommunicationsENGINEERING GROUP, P.C.ADVANCEDA-1ROOF PLANEQUIPMENT PLAN SITE NAME: SALEM HOUSING AUTHORITYSITE NUMBER: 4BSM002A500 North Broadway Phone: (401) 354-2403East Providence, RI 02914Fax: (401) 633-6354Civil Engineering - Site Development - Surveying - TelecommunicationsENGINEERING GROUP, P.C.ADVANCEDA-2EQUIPMENT SCHEDULERF CONFIGURATION 4SEC-67D95ADBSEAST ELEVATION SITE NAME: SALEM HOUSING AUTHORITYSITE NUMBER: 4BSM002A500 North Broadway Phone: (401) 354-2403East Providence, RI 02914Fax: (401) 633-6354Civil Engineering - Site Development - Surveying - TelecommunicationsENGINEERING GROUP, P.C.ADVANCEDPROPOSED ANTENNA PLANA-3EXISTING ANTENNA PLAN SITE NAME: SALEM HOUSING AUTHORITYSITE NUMBER: 4BSM002A500 North Broadway Phone: (401) 354-2403East Providence, RI 02914Fax: (401) 633-6354Civil Engineering - Site Development - Surveying - TelecommunicationsENGINEERING GROUP, P.C.ADVANCEDPROPOSED GAMMA ANTENNA PLANA-4EXISTING GAMMA ANTENNA PLAN SITE NAME: SALEM HOUSING AUTHORITYSITE NUMBER: 4BSM002A500 North Broadway Phone: (401) 354-2403East Providence, RI 02914Fax: (401) 633-6354Civil Engineering - Site Development - Surveying - TelecommunicationsENGINEERING GROUP, P.C.ADVANCEDA-5REMOTE RADIO HEAD (RRH) DETAILSTYP. ANTENNA DETAILRRUS-4449 B71+B12RBS 6102 MUAC CABINETAPXVAARR24-43-U-NA20 SITE NAME: SALEM HOUSING AUTHORITYSITE NUMBER: 4BSM002A500 North Broadway Phone: (401) 354-2403East Providence, RI 02914Fax: (401) 633-6354Civil Engineering - Site Development - Surveying - TelecommunicationsENGINEERING GROUP, P.C.ADVANCEDS-1ANTENNA / RRH MOUNT DETAIL (ALPHA)ANTENNA MOUNT DETAIL (GAMMA)ANTENNA / RRH MOUNT DETAIL (BETA) SITE NAME: SALEM HOUSING AUTHORITYSITE NUMBER: 4BSM002A500 North Broadway Phone: (401) 354-2403East Providence, RI 02914Fax: (401) 633-6354Civil Engineering - Site Development - Surveying - TelecommunicationsENGINEERING GROUP, P.C.ADVANCEDTYP. GROUNDING RISER DIAGRAMTYP. GROUND BAR CONNECTION DETAILANTENNA CABLE GROUNDINGGROUND WIRE TO GROUND BAR CONNECTION DETAILONE LINE POWER DIAGRAMG-1 1 Kathryn Newhall-Smith From:Brittany Tiano <btiano@trmcom.com> Sent:Friday, October 2, 2020 9:04 AM To:Kathryn Newhall-Smith Subject:RE: replacing wall mount antennas? Hi Kate, No worries, responses highlighted in yellow of your email below. I tried to draw a photo sim and its terrible but somewhat shows what you’ll see outside on the façade. The (3) antennas on the right are another carrier, and then I “drew” in our (4) that will be on that side. This photo from Google Maps is from 2018 too so that’s why it isn’t showing the current equipment of the existing (3) antennas on that side. Thanks for your patience and help! Thanks, Brittany 2 From: Kathryn Newhall-Smith <knewhallsmith@Salem.com> Sent: Thursday, October 1, 2020 12:02 PM To: Brittany Tiano <btiano@trmcom.com> Subject: replacing wall mount antennas? Hi Brittany, I have a few questions, please forgive me, I’m not well-versed in reviewing telecommunications plans. How many of the existing wall mount antennas are coming off of the building’s façade and relocated to the façade of the rooftop cabinet? None, antennas on the façade are not coming off. Only (1) added. How many new wall mount antennas are being installed on the façade? Are they only going on the East façade? (1) Only on the east side. What is the net change, if any, in the number of façade wall mount antennas? (1) There will now be (4) antennas there instead of (3). Two antennas located at the penthouse mounts are coming off, and being replaced with 2 new antennas. Currently has 9 antennas, new configuration will have 10 antennas. Thank you! Kate Kate Newhall-Smith Principal Planner City of Salem 98 Washington Street Salem, MA 01970 knewhallsmith@salem.com 978-619-5685 3M™ Conceal Film Communication Markets Division Product Description 3M™ Conceal Film is a new generation of 3M’s high performance non-metallic reflective film technology. Reflective over the full visible spectrum and RF-transmissive into the microwave range, 3M Conceal Film is specially formulated with an adhesive backing to provide long-life in outdoor environments and excellent UV irradiance stability. 3M Conceal Film is also optimized for glare reduction and contains a protective layer to provide abrasion resistance and permit mild cleaning.3M™ Conceal Film Features Benefits RF transparent, non-metallic Does not affect cellular signal/RF transmission Mirror-like surface adapts to changing weather conditions Blends antenna into its environment, no custom color matching required Light scattering properties Helps reduce intensity of reflected sun glare Expected performance life of 10 years (unwarranted period applied to a flat, vertical, outdoor surface) Long-term outdoor performance with minimal maintenance Abrasion resistant coating Reduced mechanical erosion and wear Easy, even application using 3M adhesive technology Clean, no fuss installation Utilizes existing mounting hardware No change to today’s installation methods; less costly than custom solutions Product Construction/ Material Description 3M™ Conceal Film is constructed using proprietary 3M technologies, combined to provide the ultimate in durable infrastructure concealment, while maintaining ease of installation. The core of 3M Conceal Film is a high efficiency mirror film constructed of alternating polymeric layers. It achieves broad band, high reflectivity without using any metal. Protecting the mirror film is an overcoat that is field proven to provide years of UV protection as well as mechanical durability and abrasion resistance. The 3M Conceal Film is anchored to the object to be concealed using 3M™ Controltac™ Graphic Film with 3M™ Comply™ Adhesive system. This highly engineered adhesive provides simple, initially repositionable, bubble-free application using a “dry” application method. Translucent Protective Liner (remove protective liner after installation) Protective Coating Mirror film Adhesive Adhesive liner 3M™ Conceal Film Property Value Total film thickness (with temporary protective film and adhesive liner) 16 mil (0.016 in., 0.406 mm) Total film thickness (without temporary protective film and adhesive liner) 7 mil (0.007 in., 0.178 mm) Construction 100% polymeric 3M™ Conceal Film Physical Properties and Performance Characteristics Property Method Value Photopic Reflectivity ASTM E1164/E308 > 90 % Dielectric constant IEC 61189-2-721 2.80 @ 5.6 GHz Dielectric loss tangent (tan d)IEC 61189-2-721 0.022 @ 5.6 GHz Cold temperature exposure IEC 60068-2-1 -55° C Hot temperature/Dry exposure IEC 60068-2-2 70° C Hot temperature/Humid exposure IEC 60068-2-78 40°C/95% RH Adhesive Pressure activated with air release channels Adhesion (typical, 24 hours after application)ASTM D3330 3 pounds/inch, FRP (fiberglass) 7 pounds/inch, PVC Salt fog corrosion resistance ASTM B117 5% salt solution, 720 hrs 3M, Controltac and Comply are trademarks of 3M Company. Important Notice All statements, technical information, and recommendations related to 3M’s products are based on information believed to be reliable, but the accuracy or completeness is not guaranteed. Before using this product, you must evaluate it and determine if it is suitable for your intended application. You assume all risks and liability associated with such use. Any statements related to the product which are not contained in 3M’s current publications, or any contrary statements contained on your purchase order shall have no force or effect unless expressly agreed upon, in writing, by an authorized officer of 3M. Warranty; Limited Remedy; Limited Liability. This product will be free from defects in material and manufacture for a period of 12 months from the time of purchase. 3M MAKES NO OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the warranty period stated above, your exclusive remedy shall be, at 3M’s option, to replace or repair the 3M product or refund the purchase price of the 3M product. Except where prohibited by law, 3M will not be liable for any loss or damage arising from this 3M product, whether direct, indirect, special, incidental or consequential regardless of the legal theory asserted. Communication Markets Division 6801 River Place Blvd. Austin, TX 78726-9000 USA Phone 1-800-426-8688 Fax 1-800-626-0329 Web 3M.com/Telecom Please recycle. Printed in USA © 3M 2017. All rights reserved. 80-6116-2051-1 Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 Radio Frequency Emissions Analysis Report T-Mobile Wireless Rooftop Facility August 20, 2020 Analysis Format: Theoretical Calculations Site Compliance Status: Compliant 4BSM002A Salem Housing Authority 27 Charter Street, Salem, MA 01970 Sign Count: 2 3 1 3 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 2 Table of Contents OVERVIEW ................................................................................................................................................................ 3 FCC GUIDELINES ..................................................................................................................................................... 4 CALCULATION METHODOLOGY & DATA ....................................................................................................... 5 RESULTS ..................................................................................................................................................................... 7 APPENDIX A: EMISSIONS THRESHOLDS FOR WALKING SURFACES AND SIGNAGE......................... 8 APPENDIX B: RF SIGNAGE DESCRIPTION TABLE ....................................................................................... 12 APPENDIX C: FCC EMISSIONS THRESHOLD LIMITS ................................................................................. 14 APPENDIX D: CERTIFICATIONS........................................................................................................................ 17 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 3 OVERVIEW Centerline Communications, LLC (“Centerline”) has been contracted to provide a Radio Frequency (RF) Analysis for the following T-Mobile wireless rooftop facility to determine whether the facility is in compliance with federal standards and regulations regarding RF emissions. This analysis includes theoretical emissions calculations for all existing equipment for T-Mobile . The facility is located on a 12-story apartment building in Salem, Massachusetts. Access to the facility is restricted to authorized personnel and facility management. Analysis Site Data Site ID: 4BSM002A Site Name: Salem Housing Authority Site Address: 27 Charter Street, Salem, MA 01970 Site Latitude: 42.521016 N Site Longitude: -70.89106 W Facility Type: Rooftop Compliance Summary Status: T-Mobile is compliant with FCC Regulations. Site Modeled Composite MPE% (General Public Limit): 23.20 % T-Mobile Max Modeled MPE% (General Public Limit): 23.20 % Lock or Control Measures if Present: Locked Hatch There are no additional system operators located on this facility or considered as part of this analysis. 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 4 FCC GUIDELINES All power density values used in this report were analyzed as a percentage of current Maximum Permissible Exposure (% MPE) as listed in the FCC OET Bulletin 65 Edition 97-01and ANSI/IEEE Std C95.1. The FCC regulates Maximum Permissible Exposure in units of microwatts per square centimeter (μW/cm2). The number of μW/cm2 calculated at each sample point is called the power density. The exposure limit for power density varies depending upon the frequencies being utilized. Wireless Carriers and Paging Services use different frequency bands each with different exposure limits, therefore it is necessary to report results and limits in terms of percent MPE rather than power density. All results were compared to the FCC (Federal Communications Commission) radio frequency exposure rules, 47 CFR 1.1307(b)(1) – (b)(3), to determine compliance with the Maximum Permissible Exposure (MPE) limits for General Population/Uncontrolled environments as defined below. General Population/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. Public exposure to radio frequencies is regulated and enforced in units of microwatts per square centimeter (μW/cm2). The general population exposure limit for the 700 and 800 MHz Bands is approximately 467 μW/cm2 and 567 μW/cm2 respectively, and the general population exposure limit for the 1900 MHz PCS and 2100 MHz AWS bands is 1000 μW/cm2. Because each carrier will be using different frequency bands, and each frequency band has different exposure limits, it is necessary to report percent of MPE rather than power density. 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, have been properly trained in RF safety 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 population/uncontrolled limits (see below), as long as the exposed person has been made fully aware of the potential for exposure, have been trained in RF safety and can exercise control over his or her exposure by leaving the area or by some other appropriate means. The Occupational/Controlled exposure limits all utilized frequency bands is five (5) times the FCC’s General Public / Uncontrolled exposure limit. Additional details can be found in FCC OET 65. 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 5 CALCULATION METHODOLOGY & DATA Centerline has performed theoretical calculations on all transmission equipment located on this facility. All calculations have been performed using the RoofMaster® software from Waterford Consultants LLC. This software performs calculations using a cylindrical model for very conservative power density predictions within the near-field of the antenna where the antenna pattern has not truly formed yet. Within this area power density values tend to decrease based upon an inverse distance function. At the point where it is appropriate for modeling to change from near-field calculations to far-field calculations the power decreases inversely with the square of the distance. This modeling technique is accurate with low antenna centerlines, such as rooftops, where persons can get close to the antennas and pass through fields in close proximity. The below calculation in Figure 1 shows the theoretical distribution of power over an imaginary cylinder with equal power distribution in all directions. Figure 1: Distribution of power over an imaginary cylinder in all directions This model can be modified for directional antennas to show directionality of power distribution. This formula will tend to be conservative as it assumes that all power is focused between the 3 dB power roll off points as shown in Figure 2. Figure 2: Distribution of power over an imaginary cylinder in all directions inside the half power roll off points (HBW) 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 6 The proposed antenna configuration for T-Mobile and any other known wireless carriers at this facility are shown below in Table 1 – Site Antenna Data Table. All calculations for this facility were performed assuming that all radios were running at full power and were uncombined in their RF paths with the configuration shown in table 1. FCC OET Bulletin 65 – Edition 97-01 recommends that modeling of this nature should be done as described prior to yield a worst-case scenario. Due to the dynamic nature of many deployed systems the “real world” values will most likely be less than those shown in this report due to worst-case values being shown in all instances. For all “Other” systems on this facility, exact equipment was used if available. In instances where “Other” system equipment was not available, standard radio configurations for these systems were utilized based upon prior experience with these systems on facilities in this area. Site Antenna Data Table Secto r Operator Frequency Band TX Power Per Channel # of Channels ERP Antenna Make Antenna Model Gain (dBd) Az (°) Antenna Centerline Height (ft) Z Valu e (ft)** A1 T-Mobile L2500 50 2 3054.92 ERICSSON AIR 6488 14.85 0 128.1 13.65 A1 T-Mobile N2500 50 2 2786.12 ERICSSON AIR 6488 14.45 0 128.1 13.65 A2 T-Mobile L700 40 2 1694.69 RFS APXVAARR24 43-U-NA20 13.26 0 128.1 11.10 A2 T-Mobile L600 40 1 812.94 RFS APXVAARR24 43-U-NA20 13.08 0 128.1 11.10 A2 T-Mobile N600 40 1 812.94 RFS APXVAARR24 43-U-NA20 13.08 0 128.1 11.10 A2 T-Mobile L1900 40 2 2704.52 RFS APXVAARR24_43-U-NA20 15.29 0 128.1 11.10 A2 T-Mobile U2100 40 2 4316.08 RFS APXVAARR24_43-U-NA20 17.32 0 128.1 11.10 A3 T-Mobile L2100 60 2 4407.39 ERICSSON AIR 32 15.65 0 128.1 12.82 A3 T-Mobile L1900 60 2 4510.05 ERICSSON AIR 32 15.75 0 128.1 12.82 B4 T-Mobile L2500 50 2 3054.92 ERICSSON AIR 6488 14.85 120 128.1 13.65 B4 T-Mobile N2500 50 2 2786.12 ERICSSON AIR 6488 14.45 120 128.1 13.65 B5 T-Mobile L700 40 2 1694.69 RFS APXVAARR24 43-U-NA20 13.26 120 128.1 11.10 B5 T-Mobile L600 40 1 812.94 RFS APXVAARR24 43-U-NA20 13.08 120 128.1 11.10 B5 T-Mobile N600 40 1 812.94 RFS APXVAARR24 43-U-NA20 13.08 120 128.1 11.10 B5 T-Mobile L1900 40 2 2704.52 RFS APXVAARR24_43-U-NA20 15.29 120 128.1 11.10 B5 T-Mobile U2100 40 2 4316.08 RFS APXVAARR24_43-U-NA20 17.32 120 128.1 11.10 B6 T-Mobile L2100 60 2 4407.39 ERICSSON AIR 32 15.65 120 128.1 12.82 B6 T-Mobile L1900 60 2 4510.05 ERICSSON AIR 32 15.75 120 128.1 12.82 G7 T-Mobile L700 40 2 1694.69 RFS APXVAARR24 43-U-NA20 13.26 280 115.1 -1.90 G7 T-Mobile L600 40 1 812.94 RFS APXVAARR24 43-U-NA20 13.08 280 115.1 -1.90 G7 T-Mobile N600 40 1 812.94 RFS APXVAARR24 43-U-NA20 13.08 280 115.1 -1.90 G7 T-Mobile L1900 40 2 2704.52 RFS APXVAARR24_43-U-NA20 15.29 280 115.1 -1.90 G7 T-Mobile U2100 40 2 4316.08 RFS APXVAARR24_43-U-NA20 17.32 280 115.1 -1.90 G8 T-Mobile L2500 50 2 3054.92 ERICSSON AIR 6488 14.85 240 115.1 0.65 G8 T-Mobile N2500 50 2 2786.12 ERICSSON AIR 6488 14.45 240 115.1 0.65 G9 T-Mobile L2100 60 2 4407.39 ERICSSON AIR 32 15.65 280 115.1 -0.18 G9 T-Mobile L1900 60 2 4510.05 ERICSSON AIR 32 15.75 280 115.1 -0.18 Table 1: Total Site Antenna data table **(Z Value is distance from bottom of antenna to walking surface) 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 7 RESULTS All calculations performed based upon the data listed for this facility have produced results that are within allowable limits for General Population for exposure to RF emissions as specified by federal standards. T-Mobile’s RF Exposure: Responsibilities, Procedures & Guidelines document states that microwave dishes are compliant if they are mounted 20 feet or greater above any accessible walking or working surface. Maximum Predicted MPE Level on Site: % of MPE Limit: Location: Accessible General Population MPE Limits: 23.20% Sector C Accessible Occupational MPE Limits: 4.64% Ground Level Assessment: % of MPE Limit: Ground Level General Population MPE Limits: 0.67% Ground Level Occupational MPE Limits: 0.13% Sector A: Transmitting over Main Level % of MPE Limit: *Distance from Antenna: Accessible General Population MPE Limits: 12.70% 0 Accessible Occupational MPE Limits: 2.54% 0 Sector B: Transmitting over Main Level % of MPE Limit: *Distance from Antenna: Accessible General Population MPE Limits: 12.10% 0 Accessible Occupational MPE Limits: 2.42% 0 Sector G: Transmitting over Main Level % of MPE Limit: *Distance from Antenna: Accessible General Population MPE Limits: 23.20% 0 Accessible Occupational MPE Limits: 4.64% 0 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 8 APPENDIX A: EMISSIONS THRESHOLDS FOR WALKING SURFACES AND SIGNAGE Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 Main Roof Level (113ft.) Emissions Thresholds for Walking Surfaces for: 4BSM002A / Salem Housing Authority 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 10 Penthouse Level (130ft.) Emissions Thresholds for Walking Surfaces for: 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 Signage Diagram Signage for: 4BSM002A/ Salem Housing Authority Signage Count: Existing Sign Proposed Sign 2 3 1 3 Access Access Access 2 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 12 APPENDIX B: RF SIGNAGE DESCRIPTION TABLE 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 13 Sign Description RF Guideline Sign Gives guidelines on how to proceed in areas that may exceed either the FCC’s General Population or Occupational emissions limits. Blue Notice Sign Used to inform individuals that they are entering an area that may exceed the FCC’s General Population limits. Must be placed anywhere the public can get within 30 feet vertically or horizontally of an antenna. Yellow Caution Sign Used to inform individuals that they are entering an area that may exceed the either the FCC’s General Population or Occupational Emissions limits. It must be placed so it is visible from all approachable sides. It must also be just outside of the area predicted to exceed the MPE limits so it can be read without standing within the affected area. Red Warning Sign Used to inform individuals that they are entering an area that may exceed 5x the FCC’s Occupational emissions limit. It must be placed so it is visible from all approachable sides. It must also be just outside of the area predicted to exceed the MPE limits so it can be read without standing within the affected area. 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 14 APPENDIX C: FCC EMISSIONS THRESHOLD LIMITS 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 15 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 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 16 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 17 APPENDIX D: CERTIFICATIONS 4BSM002A / Salem Housing Authority Centerline Communications, LLC 750 W Center St West Bridgewater MA 02379 P a g e | 18 I, Alex Van Abbema, preparer of this report certify that I am fully trained and aware of 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 the procedures and requirements outlined in T-Mobile’s FCC Regulatory Compliance Manual. Alex Van Abbema 8/20/2020 I, Brandon Green, reviewer and approver of this report certify that I am fully trained and aware of 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 the procedures and requirements outlined in T-Mobile’s FCC Regulatory Compliance Manual. Brandon Green 8/20/2020