Wireless Facility Radio Frequency Compliance Review

Wireless Facility Radio Frequency Compliance Review Crown Castle Application Modification of Site #SF03091A 2520 DeKoven Avenue, Belmont, CA 2/8/2016 Preiser Consulting 23836 La Posta Court, Corona, CA 92883 Tel 951.489.1793 Fax 951.638.4150

Crown Castle Application Modification of Site #SF03091A 2520 DeKoven Avenue, Belmont, CA Introduction Preiser Consulting has been engaged by the City of Belmont to conduct a peer review of the radio frequency (RF) safety aspects of a permit application by Crown Castle on behalf of T Mobile for the modification of an existing wireless facility located at 2520 DeKoven Avenue, Belmont, CA. System Description T Mobile currently operates at the subject site from two 53 6 monopoles located on the southwest side of the smaller of two water tanks. In addition to T Mobile, Sprint also operate from this site. According to information provided by T Mobile, the MetroPC 1 S equipment located at the site is not active and therefore not contributing RF energy to the site. T Mobile s existing services are based in the 1900 and 2100 MHz frequency bands. This applications is for the addition of additional services, specifically the addition of two antennas and associated equipment to support high speed data and voice services in the 700 MHz band using LTE (Long Term Evolution) technology. The proposed two new antennas, model RFS APXVF24 C A20, are 7.75 panel antennas to be mounted at a height above ground of 53 4 to the top of the antenna. This antenna is a dual polarized panel antenna which can support operation in the 696 894 MHz. The antenna has directional radiation patter with a horizontal beamwidth of 67 degrees. This type antenna is designed to concentrate its radiated energy toward the horizon in the direction of orientation, with very little energy wasted toward the sky or the ground. The vertical beamwidth in this case is 10.1 degrees at 700 MHz. A detailed specification sheet is provided in Attachment 1. 1 T Mobile is the parent organization of MetroPCS. Preiser Consulting Page 2

Table 1, below, contains a site antenna inventory with basic operating parameters for all carriers know to operate from this site as well as the proposed additional antennas of T Mobile which are highlighted. For modeling purposes, all antennas, except the Metro PCS antennas 2 were assumed to be active. Ant # Transmitter Frequency Band Effective Radiated Power (ERP) (Watts) Antenna Gain (dbd) Azimu th (Deg) Antenna Model T Mobile Antennas (Existing and Proposed) Horizontal Beamwidth (Deg) Ant. Length (ft) Height Above Ground (ft) Center of Radiation 1 2,100 MHz 2541.9 16.3 155 RFS APX16DWV 16WVS C (Existing) 1 1,900 MHz 2541.9 16.3 155 RFS APX16DWV 16WVS C (Existing) 1 1,900 MHz 2541.9 16.3 155 RFS APX16DWV 16WVS C (Existing) 2 700 MHz 1652.5 14.1 155 RFS APXVF24 C A20 (Proposed) 3 2,100 MHz 2541.9 16.3 220 RFS APX16DWV 16WVS C (Existing) 3 1,900 MHz 2541.9 16.3 220 RFS APX16DWV 16WVS C (Existing) 3 1,900 MHz 2541.9 16.3 220 RFS APX16DWV 16WVS C (Existing) 4 700 MHz 1652.5 14.1 220 RFS APXVF24 C A20 (Proposed) Sprint Antennas (Existing) 65 4.7 51 65 4.7 51 65 4.7 51 67 7.8 51 65 4.7 51 65 4.7 51 65 4.7 51 67 7.8 51 5 862 MHz 881.2 13.43 135 1900_800_KMW_65_Type1 65 6.3 53 5 1900 MHz 2536 16.26 135 1900_800_KMW_65_Type1 65 6.3 53 5 1900 MHz 2536 16.26 135 1900_800_KMW_65_Type1 65 6.3 53 6 862 MHz 881.2 13.43 225 1900_800_KMW_65_Type1 65 6.3 53 6 1900 MHz 2536 16.26 225 1900_800_KMW_65_Type1 65 6.3 53 6 1900 MHz 2536 16.26 225 1900_800_KMW_65_Type1 65 6.3 53 7 23075 MHz 183.5 32.66 346 Generic Parabolic 2 1 42 MetroPCS Antenns (Existing but not active) 8 1900 MHz 0 15.3 65 Andrew HBX 6516DS VTM 65 4.3 51 8 2100 MHz 0 15.6 65 Andrew HBX 6516DS VTM 65 4.3 51 9 1900 MHz 0 15.3 184 Andrew HBX 6516DS VTM 65 4.3 51 9 2100 MHz 0 15.6 184 Andrew HBX 6516DS VTM 65 4.3 51 10 1900 MHz 0 15.3 304 Andrew HBX 6516DS VTM 65 4.3 51 10 2100 MHz 0 15.6 304 Andrew HBX 6516DS VTM 65 4.3 51 Table 1 Antenna Inventory 2 Per email, dated 2/5/2016 to the City of Belmont, Crown Castle reports that the Metro PCS site has been inactive since December 2014. Therefore, the MetroPCS antennas and equipment would not contribute to the site RF energy levels. Preiser Consulting Page 3

Figure 1, below, is an aerial view of the site showing the locations of the antennas at this site. Sprint MW Antenna Sprint Antennas T Mobile Antennas MetroPCS Antennas (Inactive) Figure 1 Aerial View Methodology In conducting a peer review, relevant site application documents are reviewed and analyzed against current FCC regulations and guidelines, wireless industry standards and best practices. In this case, the project construction drawings, dated 11/9/2015 and the RF study by Site Safe, dated 2/5/2016 were reviewed relative to the RF safety aspects to determine compliance with Federal Communications Commission guidelines. RF exposure levels were independently calculated using methods detailed in their Office of Engineering & Technology Bulletin No. 65, Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields, August 1997 ( OET Bulletin 65 ). Based on the OET Bulletin 65, the Maximum Permissible Exposure ( MPE ) for the general population/uncontrolled exposure is 0.46 mw/cm² in the 700 MHz LTE spectrum, 0.58 mw/cm² in the Cellular spectrum and 1 mw/cm² in the PCS and AWS spectrum. Permissible levels for exposure under occupational/controlled conditions, such as may be encountered by maintenance personnel, are five times higher. (See Attachment 2 for a general discussion of FCC MPE levels.) Preiser Consulting Page 4

Findings Relating to Radio Frequency Emissions Safety The potential exposure levels documented in the SiteSafe Report were independently verified by Preiser Consulting using modeling techniques consistent with FCC guidelines. The calculations were based on very conservative modeling assumptions; actual levels are expected to be significantly lower. The results indicate the following: 1. The maximum calculated exposure from all carriers combined at ground level would be less than 5% of the applicable public exposure limit. 2. Exposure levels may exceed the public MPE limits for personnel working on top of either of the tanks near the antennas as indicated by blue shading in the RF diagram in Section 5.1 of the SiteSafe Report. 3. Exposure levels may also exceed the occupational MPE limits within a 3 foot zone directly in front of the panel antennas in the direction of orientation. However, this zone would only be accessible by maintenance personnel working at an elevated position directly in front of the antenna. The following mitigation measures are recommended to make the site compliant with FCC guidelines: 1. Provide RF safety awareness training of personnel that may work at elevated positions directly in front of the antennas. 2. Post yellow caution signs at the base of all monopoles containing active panel antennas. Existing signage may already be in place but should be verified upon construction. 3. Post blue notification signs at the access ladders of both of the water tanks and at the equipment enclosures. Existing signage may already be in place but should be verified upon construction. 3 3 The emission diagram in Section 5.1 of the SiteSafe report depicts, in addition to a blue notification sign a yellow caution sign at the access ladder of the larger water tank. A blue warning sign would suffice, but if the yellow caution sign already exists, Sprint may choose to remove it depending on their internal RF safety policies. Preiser Consulting Page 5

As this site has two active co located carriers, the carriers should coordinate to ensure that the site is and remains in compliance with the recommended signage and access controls. Modeling methods are very conservative and actual levels are expected to be far less. Field measurements may be considered, although not required, to determine actual RF levels on the top of the tanks, and the mitigation plan may be modified as indicated by the results of these measurements. Summary and Conclusions Preiser Consulting is of the opinion that the wireless facility as proposed, with the implementation of the recommended mitigation measures, complies with FCC guidelines for permissible levels of radio frequency exposure. Certification 1. I have read and fully understand the FCC regulations concerning RF safety and the control of human exposure to RF fields (47 CFR 1.1301 et seq). 2. To the best of my knowledge, the statements and information disclosed in this report are true, complete and accurate. 3. The analysis of site RF compliance provided herein is consistent with the applicable FCC regulations, additional guidelines issued by the FCC, and industry practices. Date: February 8, 2016 Dieter J. Preiser, PMP Preiser Consulting Page 6

Attachment 1 Antenna Specifications Sheet Attachment 1 Page 1

Attachment 1 Page 2

Attachment 2 The FCC MPE Limits The Federal Communications Commission (FCC) has established limits for maximum continuous human exposure to RF fields as directed by the Telecommunications Act of 1996. The FCC maximum permissible exposure (MPE) limits represent the consensus of federal agencies and independent experts responsible for RF safety matters. Those agencies include the National Council on Radiation Protection and Measurements (NCRP), the Occupational Safety and Health Administration (OSHA), the National Institute for Occupational Safety and Health (NIOSH), the American National Standards Institute (ANSI), the Environmental Protection Agency (EPA), and the Food and Drug Administration (FDA). In developing its guidelines, the FCC also considered input from the public and technical community notably the Institute of Electrical and Electronics Engineers (IEEE). The FCC s RF exposure guidelines are incorporated in Section 1.301 et seq of its Rules and Regulations (47 CFR 1.1301 1.1310). Those guidelines specify MPE limits for two types of exposures to RF energy: 1. Occupational / Controlled Exposure persons who are exposed as a consequence of their employment and are fully aware of the potential for exposure and have the ability to exercise control over their exposure. 2. General Population/Uncontrolled Exposure apply when one is exposed and may not be fully aware of the potential for exposure or cannot exercise control over their exposure. The specified continuous exposure MPE limits are based on known variation of human body susceptibility in different frequency ranges, and a Specific Absorption Rate (SAR) of 4 watts per kilogram, which is universally considered to accurately represent human capacity to dissipate incident RF energy (in the form of heat). The occupational MPE guidelines incorporate a safety factor of 10 or greater with respect to RF levels known to represent a health hazard, and an additional safety factor of five is applied to Attachment 2 Page 1

the MPE limits for general population exposure. Thus, the general population MPE limit has a built in safety factor of more than 50. The limits were constructed to appropriately protect humans of both sexes and all ages and sizes and under all conditions and continuous exposure at levels equal to or below the applicable MPE limits is considered to result in no adverse health effects or even health risk. The reason for two tiers of MPE limits is based on an understanding and assumption that members of the general public are unlikely to have had appropriate RF safety training and may not be aware of the exposures they receive; occupational exposure in controlled environments, on the other hand, is assumed to involve individuals who have had such training, are aware of the exposures, and know how to maintain a safe personal work environment. The FCC s RF exposure limits are expressed in two equivalent forms, using alternative units of field strength (expressed in volts per meter, or V/m), and power density (expressed in milliwatts per square centimeter, or mw/cm2). The table below lists the FCC limits for both occupational and general population exposures, using the mw/cm2 reference, for the different radio frequency ranges. The diagram below provides a graphical illustration of both the FCC s occupational and general population MPE limits. Attachment 2 Page 2

Because the FCC s RF exposure limits are frequency shaped, the exact MPE limits applicable for a particular system installation depend on the frequency range used by the systems of interest. The most appropriate method of determining RF compliance is to calculate the RF power density attributable to a particular system and compare that to the MPE limit applicable to the operating frequency in question. The result is usually expressed as a percentage of the MPE limit. For potential exposure from multiple systems, the respective percentages of the MPE limits are added, and the total percentage compared to 100 (percent of the limit). If the result is less than 100, the total exposure is in compliance; if it is more than 100, exposure mitigation measures are necessary to achieve compliance. Attachment 2 Page 3

Attachment 3 Statement of Qualifications SUMMARY OF EXPERIENCE: Over 35 years experience in all facets of telecommunications, with specialization in wireless technologies, including six years as an independent consultant for state and local government agencies on wireless and wireline telecommunications technologies. Areas of expertise include: Mobile radio technologies for public safety agencies Wireless site development and operation Tower design and implementation Cellular voice and data technologies In building coverage solutions Distributed Antenna Systems (DAS) Fiber optic and microwave backhaul transmission Next Generation 9 1 1 systems design and implementation Satellite voice and data transmission CLIENTS SERVICED: Wireless Site Development and Evaluation: City of San Diego, CA City of Martinez, CA City of Berkeley, CA City of Belmont, CA County of Santa Barbara, CA City of Burlingame, CA City of San Jose Other Wireless Projects: County of Los Angeles, CA County of Riverside, CA Salt Lake City, UT North Slope Borough, AK Clark County, WA Chelan County PUD, WA Fresno Fire Department ADDITIONAL INFORMATION: BS Degree in Electronic Technology, MBA in Information Systems Certified Telecommunications Engineer RF Endorsement (NARTE) First Class FCC Radio Telephone license Project Management Professional (PMP) certification from the Project Management Institute (PMI) Certified Cost Engineer (AACE), volunteer certification course instructor. Served as chairman of the Engineering Sub Committee of the California Public Safety Radio Association. (CPRA) a local chapter of the Association of Public Safety Officials (APCO). Served as chairman of the Regulatory Review Committee of the California Public Safety Radio Association representing southern California in matters before the FCC and Public Utilities Commission. Member of the Associated Public Safety Communications Officials International (APCO) FCC Amateur Radio License, N6DGS Served as a Computer and Communications Specialist with the California Air National Guard, Combat Communications Squadron Attachment 3 Page 1

STATE OF CALIFORNIA ) ) COUNTY OF ORANGE) DECLARATION OF MAILING RE: Public Comments for a T-Mobile Upgrade to an Existing Wireless Telecommunications Facility at 2520 De Koven Avenue I, Norah Jaffan, do hereby declare as follows: 1. I am a _Project Manager of NotificationMaps.com. I am over 18 years of age and I am a resident of the County of Orange, State of California. 2. On Dec 10, 2015 I caused to be mailed and/or distributed a copy of Public Comments for a T-Mobile Upgrade to an Existing Wireless Telecommunications Facility at 2520 De Koven Avenue to the following location(s) : a. b. 2520 De Koven Ave, Belmont See Attached Mailing List See Attached Notice c. d. 3. The attached list was prepared using the latest available data per the County Assesor s Office. I declare under penalty of perjury under the laws of the State of California that the foregoing is true and correct. Executed 12/10/2015 at County of Orange, California. By: Norah Jaffan [Please Print Name]

December 7, 2015 Re: Public Comments for a T-Mobile Upgrade to an Existing Wireless Telecommunications Facility at 2520 De Koven Avenue Dear City of Belmont Resident, This is an invitation to provide general comments and/or questions regarding T-Mobile s proposal to install (2) new antennas and additional ancillary equipment onto the existing wireless facility at 2520 De Koven Avenue in Belmont. The proposed modifications are a technology upgrade to add a new 700 MHz frequency band that will improve data speeds and service for T-Mobile customers. The proposed project is on an existing monopole with no substantial change to the structure. The landscaping and surrounding area will not be affected. This minor modification is compliant with FCC rules and regulations, and will enhance wireless communication for the residents of the City of Belmont, including emergency services. Attached are the following sheets from the project plans for reference: C-2 Site Plan, C- 4 Elevation, C-5 Elevation, and C-6 Antenna Layout. Please send your comments and questions to T-Mobile s Agent, Courtney Lai with Crown Castle, at courtney.lai@crowncastle.com or at 925-737-1073. The applicant s goal is to collect your initial feedback by December 31, 2015.

11/11/15 1 SITE PLAN SCALE: TRUE NORTH 0'1' 5' 10' 20' 40' PLANS PREPARED BY: PLANS PREPARED FOR: PLANS PREPARED FOR: SITE INFORMATION: SF091 BELMONT COUNTY WATE 827693-SF03091A REVISIONS: SITE PLAN 2520 DEKOVEN AVE BELMONT, CA 94002 C-2 0

NOTE 11/11/15 1 EXISITNG SOUTH TOWER ELEVATION 2 PROPOSED SOUTH TOWER ELEVATION SCALE: N.T.S. SCALE: N.T.S. PLANS PREPARED BY: PLANS PREPARED FOR: PLANS PREPARED FOR: SITE INFORMATION: REVISIONS: SF091 BELMONT COUNTY WATE 827693-SF03091A 2520 DEKOVEN AVE BELMONT, CA 94002 C-4 0

NOTE 1 EXISTING WEST TOWER ELEVATION 2 PROPOSED WEST TOWER ELEVATION SCALE: N.T.S. SCALE: N.T.S. 11/11/15 PLANS PREPARED BY: PLANS PREPARED FOR: PLANS PREPARED FOR: SITE INFORMATION: REVISIONS: SF091 BELMONT COUNTY WATE 827693-SF03091A 2520 DEKOVEN AVE BELMONT, CA 94002 C-5 0

1 EXISITING ANTENNA LAYOUT SCALE: N.T.S. TRUE NORTH 2 PROPOSED ANTENNA LAYOUT 4 TRUE NORTH ANTENNA MOUNTING DIAGRAM SCALE: N.T.S. SCALE: N.T.S. 11/11/15 3 PROPOSED TRI-SECTOR MOUNT SCALE: N.T.S. 5 ANTENNA MOUNTING HARDWARE SCALE: N.T.S. PLANS PREPARED BY: PLANS PREPARED FOR: PLANS PREPARED FOR: SITE INFORMATION: SF091 BELMONT COUNTY WATE 827693-SF03091A REVISIONS: 2520 DEKOVEN AVE BELMONT, CA 94002 C-6 0

APN OWNER_NAME OWNER_MAILING OWNER_CITY OWNER_STATE OWNER_ZIP 043273460 Mohanavelu Ravindran 2614 Lincoln Ave Belmont CA 94002 043273480 Low Dorothy Cheng Tr 2533 Dekoven Ave Belmont CA 94002-1421 043271070 Christensen Edel M Tr 2810 Newlands Ave Belmont CA 94002-1432 043272250 Anderson Kathryn J Tr 2512 Dekoven Ave Belmont CA 94002-1422 043272330 Mouzon Sarah B 2831 Newlands Ave Belmont CA 94002-1431 043272040 Borromeo Theodore C Tr 2821 Newlands Ave Belmont CA 94002 043273390 Schaefer Mark T Tr 2610 Lincoln Ave Belmont CA 94002-1428 043233330 Abiezzi Salwan 2625 Lincoln Ave Belmont CA 94002-1427 043273140 Gardner Frederick H & Sandra 2509 Dekoven Ave Belmont CA 94002-1421 043273450 Haunch Eugene A & J S Trs 2612 Lincoln Ave Belmont CA 94002-1428 043273020 Arnett Donald W Tr 2537 Dekoven Avenue Belmont CA 94002-1431 043272260 Bennett Hugh E & Shirley A 2514 Dekoven Ave Belmont CA 94002-1422 043272270 Wehe Michael R & Janice G Trs 2518 Dekoven Ave Belmont CA 94002-1422 043271100 Carboni Michael J & Maryanne E 2816 Newlands Ave Belmont CA 94002-1432 043273250 Wong Paula Mee 2510 Lincoln Ave Belmont CA 94002-0000 043273380 Coe Nancy J 405 Chesterton Ave Belmont CA 94002 043272030 Rausch Frank H Tr 2823 Newlands Aver Belmont CA 94002-3989 043273110 Lew Jimmie H 2517 De Koven Ave Belmont CA 94002-1421 043273260 Gee Adam & Sue Fern 2512 Lincoln Ave Belmont CA 94002-1426 043273010 Smith Mark J Tr 2618 Lincoln Ave Belmont CA 94002-1428 043271060 Tahriri Mark B 2812 Newlands Ave Belmont CA 94002-1432 043273350 Millar W Stuart 2530 Lincoln Ave Belmont CA 94002-1426 043272210 Hulihee Cherice Diane 2504 Dekoven Ave Belmont CA 94002-1422 043272300 Frana Donald F 2526 Dekoven Ave Belmont CA 94002-1422 043272050 Finzell Mary J Adame Tr 2819 Newlands Ave Belmont CA 94002 043272400 Belmont County Water Dist Po Box 129 Belmont CA 94002 043273340 Shitamoto Robert K 2528 Lincoln Ave Belmont CA 94002-0000 043272380 Schmid George A 2620 Lincoln Ave Belmont CA 94002-1428 043272070 Bordwell Brenda A Tr 5912 Pine Vista Wy Elk Grove CA 95758 043273080 Shjeflo Walter E 2523 Dekoven Ave Belmont CA 94002-1421 043272290 Lien Henry 2524 Dekoven Avenue Belmont CA 94002 043273330 Gosch Ricky J & Laura M 2526 Lincoln Ave Belmont CA 94002-1426 043272240 Vance Todd B & Donna M 2510 De Koven Avenue Belmont CA 94002 043273130 Haase Andrew & Kathleen A 2513 Dekoven Ave Belmont CA 94002-1421 043273040 Ellison Joanne B Tr 2531 Dekoven Ave Belmont CA 94002-1421 043273370 Gularte Linda Jean Tr 2604 Lincoln Ave Belmont CA 94002-1428 043272080 Vijayant Amit 2813 Newlands Ave Belmont CA 94002-1431 043273470 Angeles Roberto Tr 2535 Dekoven Ave Belmont CA 94002-1421 043273360 Ho Jason Kaifung 2600 Lincoln Ave Belmont CA 94002 043272100 Lopez Gregory D 2809 Newlands Ave Belmont CA 94022 043273300 Slasten Eugene Tr 2520 Lincoln Ave Belmont CA 94002-1426 043273070 Mcnulty James A Tr 2525 Dekoven Ave Belmont CA 94002-1421 043272350 Parks Derrick James 2622 Lincoln Ave Belmont CA 94002-1428 043272390 Chow Jean Chung 2516 Dekoven Ave Belmont CA 94002-1422 043273310 Delisle Alynn 1660 Back Nine Trail Reno NV 89523 043272060 Briggs Debra A 2817 Newlands Ave Belmont CA 94002-1431 043273410 Chong Pamela Soo Jin Tr 2616 Lincoln Ave Belmont CA 94002 043272360 Wade Julien J Tr 2829 Newlands Ave Belmont CA 94002-1431 043271040 Carter Helene A Tr 2818 Newlands Ave Belmont CA 94002-1432 043273320 Pesce Mark P Tr 2524 Lincoln Ave Belmont CA 94002-1426 043271080 Dartnell Peter 2808 Newlands Avenue Belmont CA 94002 043272370 Matthews Edward W Tr 2530 Dekoven Ave Belmont CA 94002 043272020 Lapier Erik M Tr 2825 Newlands Ave Belmont CA 94002-1431 043271090 Romaneck Lawrence R Tr 2814 Newlands Ave Belmont CA 94002-1432 043272310 Jadallah Victor 2528 Dekoven Ave Belmont CA 94002 043273060 Durrans Kathleen A Tr 2527 Dekoven Ave Belmont CA 94002-1421 043273120 Stovall Matthew K 2515 De Koven Ave Belmont CA 94002-1421 043272090 Wu Hao-Sheng 2811 Newlands Ave Belmont CA 94002-1431 043273090 Shimabuku Sid V Tr 2521 Dekoven Ave Belmont CA 94002-1421 043273270 Nessary Richard 2514 Lincoln Belmont CA 94002 043272220 Nilsen John 2506 Dekoven Ave Belmont CA 94002-1422 043273050 Barton Gary L Tr 2529 Dekoven Ave Belmont CA 94002-1421 043233310 Davies David 2627 Lincoln Ave Belmont CA 94002-1427 043273100 Cricks Jeffrey C Tr 2519 Dekoven Ave Belmont CA 94002-1421 043272230 Brito Chris 2508 Dekoven Ave Belmont CA 94002

200 North Glebe Road, Suite 1000, Arlington, VA 22203-3728 703.276.1100 703.276.1169 fax info@sitesafe.com www.sitesafe.com Crown Castle on behalf of T-Mobile Crown Castle BU 827693 Crown Castle Site Name SF091 Belmont County Water T-Mobile Site ID SF03091A T-Mobile Application ID 302257 Site Compliance Report 2520 Dekoven Avenue Belmont, CA 94002 Latitude: N37-31-11.83 Longitude: W122-18-26.07 Structure Type: Water Tank Report generated date: February 5, 2016 Report by: Kevin Smith Customer Contact: Courtney Lai T-Mobile Is Compliant based on FCC Rules and Regulations. 2016 Sitesafe, Inc. Arlington, VA

Crown Castle on behalf of T-Mobile SF091 Belmont County Water - 827693 Radio Frequency (RF) Site Compliance Report 2520 Dekoven Avenue, Belmont, CA 94002 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com

Table of Contents 1 EXECUTIVE SUMMARY... 3 2 REGULATORY BASIS... 4 2.1 FCC RULES AND REGULATIONS... 4 2.2 OSHA STATEMENT... 5 3 SITE COMPLIANCE... 6 3.1 SITE COMPLIANCE STATEMENT... 6 3.2 ACTIONS FOR SITE COMPLIANCE... 6 4 SAFETY PLAN AND PROCEDURES... 7 5 ANALYSIS... 8 5.1 RF EMISSIONS DIAGRAM... 8 6 ANTENNA INVENTORY... 11 7 ENGINEER CERTIFICATION... 14 APPENDIX A STATEMENT OF LIMITING CONDITIONS... 15 APPENDIX B ASSUMPTIONS AND DEFINITIONS... 16 GENERAL MODEL ASSUMPTIONS...16 USE OF GENERIC ANTENNAS...16 DEFINITIONS...17 APPENDIX C RULES & REGULATIONS... 19 EXPLANATION OF APPLICABLE RULES AND REGULATIONS...19 OCCUPATIONAL ENVIRONMENT EXPLAINED...19 APPENDIX D GENERAL SAFETY RECOMMENDATIONS... 20 ADDITIONAL INFORMATION...21 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com

1 Executive Summary Crown Castle on behalf of T-Mobile has contracted with Sitesafe, Inc. (Sitesafe), an independent Radio Frequency (RF) regulatory and engineering consulting firm, to determine whether the proposed communications site, 827693 - SF091 Belmont County Water, located at 2520 Dekoven Avenue, Belmont, CA, is in compliance with Federal Communication Commission (FCC) Rules and Regulations for RF emissions. This report contains a detailed summary of the RF environment at the site including: diagram of the site; inventory of the make / model of all antennas theoretical MPE based on modeling. This report addresses exposure to radio frequency electromagnetic fields in accordance with the FCC Rules and Regulations for all individuals, classified in two groups, Occupational or Controlled and General Public or Uncontrolled. This site is compliant with the FCC rules and regulations, as described in OET Bulletin 65. This document and the conclusions herein are based on the information provided by T-Mobile. If you have any questions regarding RF safety and regulatory compliance, please do not hesitate to contact Sitesafe s Customer Support Department at (703) 276-1100. 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 3

2 Regulatory Basis 2.1 FCC Rules and Regulations In 1996, the Federal Communication Commission (FCC) adopted regulations for the evaluating of the effects of RF emissions in 47 CFR 1.1307 and 1.1310. The guideline from the FCC Office of Engineering and Technology is Bulletin 65 ( OET Bulletin 65 ), Evaluating Compliance with FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields, Edition 97-01, published August 1997. Since 1996 the FCC periodically reviews these rules and regulations as per their congressional mandate. FCC regulations define two separate tiers of exposure limits: Occupational or Controlled environment and General Public or Uncontrolled environment. The General Public limits are generally five times more conservative or restrictive than the Occupational limit. These limits apply to accessible areas where workers or the general public may be exposed to Radio Frequency (RF) electromagnetic fields. Occupational or Controlled limits apply in situations in which persons are exposed as a consequence of their employment and where those persons exposed have been made fully aware of the potential for exposure and can exercise control over their exposure. An area is considered a Controlled environment when access is limited to these aware personnel. Typical criteria are restricted access (i.e. locked or alarmed doors, barriers, etc.) to the areas where antennas are located coupled with proper RF warning signage. A site with Controlled environments is evaluated with Occupational limits. All other areas are considered Uncontrolled environments. If a site has no access controls or no RF warning signage it is evaluated with General Public limits. The theoretical modeling of the RF electromagnetic fields has been performed in accordance with OET Bulletin 65. The Maximum Permissible Exposure (MPE) limits utilized in this analysis are outlined in the following diagram: FCC Limits for Maximum Permissible Exposure (MPE) Plane-wave Equivalent Power Density Power Density (mw/cm 2 ) 1000 100 10 1 0.1 Occupational General Public 0.01 0 1 10 100 1,000 10,000 Frequency (MHz) 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 4

Frequency Range (MHz) Limits for Occupational/Controlled Exposure (MPE) Electric Magnetic Power Field Field Density (S) Strength (E) Strength (mw/cm 2 ) (V/m) (H) (A/m) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842/f 4.89/f (900/f 2 )* 6 30-300 61.4 0.163 1.0 6 300-1500 -- -- f/300 6 1500-100,000 -- -- 5 6 Frequency Range (MHz) Averaging Time E 2, H 2 or S (minutes) Limits for General Population/Uncontrolled Exposure (MPE) Electric Magnetic Power Field Field Density (S) Strength (E) Strength (mw/cm 2 ) (V/m) (H) (A/m) 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/f 2 )* 30 30-300 27.5 0.073 0.2 30 300-1500 -- -- f/1500 30 1500-100,000 -- -- 1.0 30 f = frequency in MHz *Plane-wave equivalent power density 2.2 OSHA Statement The General Duty clause of the OSHA Act (Section 5) outlines the occupational safety and health responsibilities of the employer and employee. The General Duty clause in Section 5 states: (a) Each employer (1) shall furnish to each of his employees employment and a place of employment which are free from recognized hazards that are causing or are likely to cause death or serious physical harm to his employees; (2) shall comply with occupational safety and health standards promulgated under this Act. (b) Each employee shall comply with occupational safety and health standards and all rules, regulations, and orders issued pursuant to this Act which are applicable to his own actions and conduct. OSHA has defined Radiofrequency and Microwave Radiation safety standards for workers who may enter hazardous RF areas. Regulation Standards 29 CFR 1910.147 identify a generic Lock Out Tag Out procedure aimed to control the unexpected energization or start up of machines when maintenance or service is being performed. 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 5

3 Site Compliance 3.1 Site Compliance Statement Upon evaluation of the cumulative RF emission levels from all operators at this site, Sitesafe has determined that: This site is compliant with the FCC rules and regulations, as described in OET Bulletin 65. The compliance determination is based on theoretical modeling, RF signage placement recommendations, proposed antenna inventory and the level of restricted access to the antennas at the site. Any deviation from the T-Mobile s proposed deployment plan could result in the site being rendered non-compliant. 3.2 Actions for Site Compliance Based on common industry practice and our understanding of FCC and OSHA requirements, this section provides a statement of recommendations for site compliance. Barriers can consist of locked doors, fencing, railing, rope, chain, paint striping or tape, combined with RF alert signage. This site is compliant with the FCC rules and regulations. 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 6

4 Safety Plan and Procedures The following items are general safety recommendations that should be administered on a site by site basis as needed by the carrier. General Maintenance Work: Any maintenance personnel required to work immediately in front of antennas and / or in areas indicated as above 100% of the Occupational MPE limits should coordinate with the wireless operators to disable transmitters during their work activities. Training and Qualification Verification: All personnel accessing areas indicated as exceeding the General Population MPE limits should have a basic understanding of EME awareness and RF Safety procedures when working around transmitting antennas. Awareness training increases a workers understanding to potential RF exposure scenarios. Awareness can be achieved in a number of ways (e.g. videos, formal classroom lecture or internet based courses). Physical Access Control: Access restrictions to transmitting antennas locations is the primary element in a site safety plan. Examples of access restrictions are as follows: Locked door or gate Alarmed door Locked ladder access Restrictive Barrier at antenna (e.g. Chain link with posted RF Sign) RF Signage: Everyone should obey all posted signs at all times. RF signs play an important role in properly warning a worker prior to entering into a potential RF Exposure area. Assume all antennas are active: Due to the nature of telecommunications transmissions, an antenna transmits intermittently. Always assume an antenna is transmitting. Never stop in front of an antenna. If you have to pass by an antenna, move through as quickly and safely as possible thereby reducing any exposure to a minimum. Maintain a 3 foot clearance from all antennas: There is a direct correlation between the strength of an EME field and the distance from the transmitting antenna. The further away from an antenna, the lower the corresponding EME field is. Site RF Emissions Diagram: Section 5 of this report contains an RF Diagram that outlines various theoretical Maximum Permissible Exposure (MPE) areas at the site. The modeling is a worst case scenario assuming a duty cycle of 100% for each transmitting antenna at full power. This analysis is based on one of two access control criteria: General Public criteria means the access to the site is uncontrolled and anyone can gain access. Occupational criteria means the access is restricted and only properly trained individuals can gain access to the antenna locations. 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 7

5 Analysis 5.1 RF Emissions Diagram The RF diagram(s) below display theoretical spatially averaged percentage of the Maximum Permissible Exposure for all systems at the site unless otherwise noted. These diagrams use modeling as prescribed in OET Bulletin 65 and assumptions detailed in Appendix B. The key at the bottom of each RF Emissions Simulation indicates percentages displayed referenced to FCC General Public Maximum Permissible Exposure (MPE) limits. Color coding on the diagram is as follows: Areas indicated as Gray are predicted to be below 5% of the MPE limits. Gray represents areas more than 20 times below the most conservative exposure limit. Green represents areas are predicted to be between 5% and 100% of the MPE limits. Green areas are accessible to anyone. Blue represents areas predicted to exceed the General Public MPE limits but are less than Occupational limits. Blue areas should be accessible only to RF trained workers. Yellow represents areas predicted to exceed Occupational MPE limits. Yellow areas should be accessible only to RF trained workers able to assess current exposure levels. Red represents areas predicted to have exposure more than 10 times the Occupational MPE limits. Red indicates that the RF levels must be reduced prior to access. An RF Safety Plan is required which outlines how to reduce the RF energy in these areas prior to access. General Population diagrams are specified when an area is accessible to the public; i.e. personnel that do not meet Occupational or RF Safety trained criteria, could gain access. If trained occupational personnel require access to areas that are delineated as Blue or above 100% of the limit, Sitesafe recommends that they utilize the proper personal protection equipment (RF monitors), coordinate with the carriers to reduce or shutdown power, or make real-time power density measurements with the appropriate power density meter to determine real-time MPE levels. This will allow the personnel to ensure that their work area is within exposure limits. The key at the bottom also indicates the level or height of the modeling with respect to the main level. The origin is typically referenced to the main rooftop level, or ground level for a structure without access to the antenna level. Abbreviations used in the RF Emissions Diagrams PH=## Penthouse at ## feet above main roof 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 8

RF Emissions Simulation For: SF091 Belmont County Water Composite View GROUND LEVEL CAUTION GATE 1 L Door 7 ACCESS 1 Beyond This Point you are entering a controlled area where RF Emissions may exceed the FCC Occupational Exposure Limits Notice Beyond This Point you are entering a controlled area where RF Emissions may exceed the FCC General Population Exposure Limits T-MOBILE EQUIPMENT Notice TOP OF WATER TANK 1=48'(AGL) ACCESS 2 Beyond This Point you are entering a controlled area where RF Emissions may exceed the FCC General Population Exposure Limits GATE 2 L Door TOP OF WATER TANK 2=48' (AGL) 6 5 FENCE SPRINT EQUIPMENT 4 3 2 1 10 9 8 Notice Beyond This Point you are entering a controlled area where RF Emissions may exceed the FCC General Population Exposure Limits CAUTION METROPCS EQUIPMENT CAUTION Beyond This Point you are entering a controlled area where RF Emissions may exceed the FCC Occupational Exposure Limits Beyond This Point you are entering a controlled area where RF Emissions may exceed the FCC Occupational Exposure Limits N % of FCC Public Exposure Limit Spatial average 0' - 6' (Feet) >= 5000 >= 500 >= 100 >= 5 < 5 0 13.8 27.6 www.sitesafe.com Site Name:SF091 Belmont County Water AT&T MOBILITY LLC VERIZON WIRELESS T-MOBILE METROPCS CRICKET COMMUNICATIONS CLEARWIRE SPRINT Sitesafe Inc. assumes no responsiblity for modeling results not verified by Sitesafe personnel. Contact Sitesafe Inc. for modeling assistance at (703) 276-1100 SitesafeTC Version: 1.0.0.0 2/5/2016 7:45:07 AM

RF Emissions Simulation For: SF091 Belmont County Water T-Mobile Contribution GROUND LEVEL CAUTION GATE 1 L Door ACCESS 1 Beyond This Point you are entering a controlled area where RF Emissions may exceed the FCC Occupational Exposure Limits Notice Beyond This Point you are entering a controlled area where RF Emissions may exceed the FCC General Population Exposure Limits T-MOBILE EQUIPMENT Notice TOP OF WATER TANK 1=48'(AGL) ACCESS 2 Beyond This Point you are entering a controlled area where RF Emissions may exceed the FCC General Population Exposure Limits GATE 2 L Door TOP OF WATER TANK 2=48' (AGL) FENCE SPRINT EQUIPMENT 4 3 2 1 Notice Beyond This Point you are entering a controlled area where RF Emissions may exceed the FCC General Population Exposure Limits CAUTION METROPCS EQUIPMENT CAUTION Beyond This Point you are entering a controlled area where RF Emissions may exceed the FCC Occupational Exposure Limits Beyond This Point you are entering a controlled area where RF Emissions may exceed the FCC Occupational Exposure Limits N % of FCC Public Exposure Limit Spatial average 0' - 6' (Feet) >= 5000 >= 500 >= 100 >= 5 < 5 0 13.6 27.3 www.sitesafe.com Site Name:SF091 Belmont County Water AT&T MOBILITY LLC VERIZON WIRELESS T-MOBILE METROPCS CRICKET COMMUNICATIONS CLEARWIRE SPRINT Sitesafe Inc. assumes no responsiblity for modeling results not verified by Sitesafe personnel. Contact Sitesafe Inc. for modeling assistance at (703) 276-1100 SitesafeTC Version: 1.0.0.0 2/5/2016 7:51:00 AM

6 Antenna Inventory The Antenna Inventory shows all transmitting antennas at the site. This inventory was provided by the customer, and was utilized by Sitesafe to perform theoretical modeling of RF emissions. The inventory coincides with the site diagrams in this report, identifying each antenna s location at 827693 - SF091 Belmont County Water. The antenna information collected includes the following information: Licensee or wireless operator name Frequency or frequency band Transmitter power Effective Radiated Power ( ERP ), or Equivalent Isotropic Radiated Power ( EIRP ) in Watts Antenna manufacturer make, model, and gain For other carriers at this site, the use of Generic as an antenna model, or Unknown for an operator means the information with regard to carrier, their FCC license and/or antenna information was not available nor could it be secured while on site. Equipment, antenna models and nominal transmit power were used for modeling, based on past experience with radio service providers. 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 11

Ant # 1 1 1 2 3 3 3 4 The following antenna inventory, on this and the following page, were provided by the customer and were utilized to create the site model diagrams: Operated By TX Freq (MHz) ERP (Watts) Antenna Gain (dbd) Table 3: Antenna Inventory Az (Deg) Antenna Model T-MOBILE 2100 2541.9 16.27 155 RFS APX16DWV-16DWV-S-E-A20 (Proposed) T-MOBILE 1900 2541.9 16.27 155 RFS APX16DWV-16DWV-S-E-A20 (Proposed) T-MOBILE 1900 2541.9 16.27 155 RFS APX16DWV-16DWV-S-E-A20 (Proposed) T-MOBILE 700 1652.5 14.4 155 RFS APXVF24-C-A20 (Proposed) T-MOBILE 2100 2541.9 16.27 220 RFS APX16DWV-16DWV-S-E-A20 (Proposed) T-MOBILE 1900 2541.9 16.27 220 RFS APX16DWV-16DWV-S-E-A20 (Proposed) T-MOBILE 1900 2541.9 16.27 220 RFS APX16DWV-16DWV-S-E-A20 (Proposed) T-MOBILE 700 1652.5 14.4 220 RFS APXVF24-C-A20 (Proposed) Ant Type Len (ft) Horizontal Half Power Beamwidth (Deg) Location X Y Z (AGL) Panel 4.7 65 141' 110.4' 51' Panel 4.7 65 141' 110.4' 51' Panel 4.7 65 141' 110.4' 51' Panel 7.8 67 137.8' 111.8' 51' Panel 4.7 65 134.5' 114.7' 51' Panel 4.7 65 134.5' 114.7' 51' Panel 4.7 65 134.5' 114.7' 51' Panel 7.8 67 132.2' 116.8' 51' 5 SPRINT 862 881.2 13.43 120 Generic Panel 6.3 65 99.6' 129.3' 53' 5 SPRINT 1900 2536 16.26 120 Generic Panel 6.3 65 99.6' 129.3' 53' 5 SPRINT 1990 2536 16.26 120 Generic Panel 6.3 65 99.6' 129.3' 53' 6 SPRINT 862 881.2 13.43 240 Generic Panel 6.3 65 97.9' 128.4' 53' 6 SPRINT 1900 2536 16.26 240 Generic Panel 6.3 65 97.9' 128.4' 53' 6 SPRINT 1990 2536 16.26 240 Generic Panel 6.3 65 97.9' 128.4' 53' 7 SPRINT 23075 183.5 32.66 346 Generic Aperture 1 2 69.6' 183.9' 42' 8 8 MetroPCS (Decommissioned) MetroPCS (Decommissioned) 1900 0 15.326 65 Andrew HBX-6516DS-VTM Panel 4.3 65 165.9' 115' 51' 2100 0 15.65 65 Andrew HBX-6516DS-VTM Panel 4.3 65 165.9' 115' 51' 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 12

Ant # 9 9 10 10 Operated By MetroPCS (Decommissioned) MetroPCS (Decommissioned) MetroPCS (Decommissioned) MetroPCS (Decommissioned) TX Freq (MHz) ERP (Watts) Antenna Gain (dbd) Table 3: Antenna Inventory Az (Deg) Antenna Model Ant Type Len (ft) Horizontal Half Power Beamwidth (Deg) Location X Y Z (AGL) 1900 0 15.326 184 Andrew HBX-6516DS-VTM Panel 4.3 65 164.7' 114.1' 51' 2100 0 15.65 184 Andrew HBX-6516DS-VTM Panel 4.3 65 164.7' 114.1' 51' 1900 0 15.326 304 Andrew HBX-6516DS-VTM Panel 4.3 65 164.6' 115.8' 51' 2100 0 15.65 304 Andrew HBX-6516DS-VTM Panel 4.3 65 164.6' 115.8' 51' NOTE: X, Y and Z indicate relative position of the antenna to the origin location on the site, displayed in the model results diagram. Specifically, the Z reference indicates antenna height above the ground level. ERP values provided by the client and used in the modeling may be greater than are currently deployed. For other carriers at this site the use of Generic as an antenna model or Unknown for a wireless operator means the information with regard to carrier, their FCC license and/or antenna information was not available nor could it be secured while on site. Equipment, antenna models and nominal transmit power were used for modeling, based on past experience with radio service providers. Note: As at 2013, MetroPCS is now part of T-Mobile US, Inc., and their antennas at this site has been decommissioned. 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 13

7 Engineer Certification The professional engineer whose seal appears on the cover of this document hereby certifies and affirms that: I am registered as a Professional Engineer in the jurisdiction indicated in the professional engineering stamp on the cover of this document; and That I am an employee of Sitesafe, Inc., in Arlington, Virginia, at which place the staff and I provide RF compliance services to clients in the wireless communications industry; and That I am thoroughly familiar with the Rules and Regulations of the Federal Communications Commission (FCC) as well as the regulations of the Occupational Safety and Health Administration (OSHA), both in general and specifically as they apply to the FCC Guidelines for Human Exposure to Radio-frequency Radiation; and That I have thoroughly reviewed this Site Compliance Report and believe it to be true and accurate to the best of my knowledge as assembled by and attested to by Kevin Smith. February 5, 2016 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 14

Appendix A Statement of Limiting Conditions Sitesafe will not be responsible for matters of a legal nature that affect the site or property. Due to the complexity of some wireless sites, Sitesafe performed this analysis and created this report utilizing best industry practices and due diligence. Sitesafe cannot be held accountable or responsible for anomalies or discrepancies due to actual site conditions (i.e., mislabeling of antennas or equipment, inaccessible cable runs, inaccessible antennas or equipment, etc.) or information or data supplied by T-Mobile, the site manager, or their affiliates, subcontractors or assigns. Sitesafe has provided computer generated model(s) in this Site Compliance Report to show approximate dimensions of the site, and the model is included to assist the reader of the compliance report to visualize the site area, and to provide supporting documentation for Sitesafe s recommendations. Sitesafe may note in the Site Compliance Report any adverse physical conditions, such as needed repairs, observed during the survey of the subject property or that Sitesafe became aware of during the normal research involved in performing this survey. Sitesafe will not be responsible for any such conditions that do exist or for any engineering or testing that might be required to discover whether such conditions exist. Because Sitesafe is not an expert in the field of mechanical engineering or building maintenance, the Site Compliance Report must not be considered a structural or physical engineering report. Sitesafe obtained information used in this Site Compliance Report from sources that Sitesafe considers reliable and believes them to be true and correct. Sitesafe does not assume any responsibility for the accuracy of such items that were furnished by other parties. When conflicts in information occur between data provided by a second party and physical data collected by Sitesafe, the physical data will be used. 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 15

Appendix B Assumptions and Definitions General Model Assumptions In this site compliance report, it is assumed that all antennas are operating at full power at all times. Software modeling was performed for all transmitting antennas located on the site. Sitesafe has further assumed a 100% duty cycle and maximum radiated power. The site has been modeled with these assumptions to show the maximum RF energy density. Sitesafe believes this to be a worst-case analysis, based on best available data. Areas modeled to predict emissions greater than 100% of the applicable MPE level may not actually occur, but are shown as a worst-case prediction that could be realized real time. Sitesafe believes these areas to be safe for entry by occupationally trained personnel utilizing appropriate personal protective equipment (in most cases, a personal monitor). Thus, at any time, if power density measurements were made, we believe the realtime measurements would indicate levels below those depicted in the RF emission diagram(s) in this report. By modeling in this way, Sitesafe has conservatively shown exclusion areas areas that should not be entered without the use of a personal monitor, carriers reducing power, or performing real-time measurements to indicate real-time exposure levels. Use of Generic Antennas For the purposes of this report, the use of Generic as an antenna model, or Unknown for an operator means the information about a carrier, their FCC license and/or antenna information was not provided and could not be obtained while on site. In the event of unknown information, Sitesafe will use our industry specific knowledge of equipment, antenna models, and transmit power to model the site. If more specific information can be obtained for the unknown measurement criteria, Sitesafe recommends remodeling of the site utilizing the more complete and accurate data. Information about similar facilities is used when the service is identified and associated with a particular antenna. If no information is available regarding the transmitting service associated with an unidentified antenna, using the antenna manufacturer s published data regarding the antenna s physical characteristics makes more conservative assumptions. Where the frequency is unknown, Sitesafe uses the closest frequency in the antenna s range that corresponds to the highest Maximum Permissible Exposure (MPE), resulting in a conservative analysis. 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 16

Definitions 5% Rule The rules adopted by the FCC specify that, in general, at multiple transmitter sites actions necessary to bring the area into compliance with the guidelines are the shared responsibility of all licensees whose transmitters produce field strengths or power density levels at the area in question in excess of 5% of the exposure limits. In other words, any wireless operator that contributes 5% or greater of the MPE limit in an area that is identified to be greater than 100% of the MPE limit is responsible taking corrective actions to bring the site into compliance. Compliance The determination of whether a site is safe or not with regards to Human Exposure to Radio Frequency Radiation from transmitting antennas. Decibel (db) A unit for measuring power or strength of a signal. Duty Cycle The percent of pulse duration to the pulse period of a periodic pulse train. Also, may be a measure of the temporal transmission characteristic of an intermittently transmitting RF source such as a paging antenna by dividing average transmission duration by the average period for transmission. A duty cycle of 100% corresponds to continuous operation. Effective (or Equivalent) Isotropic Radiated Power (EIRP) The product of the power supplied to the antenna and the antenna gain in a given direction relative to an isotropic antenna. Effective Radiated Power (ERP) In a given direction, the relative gain of a transmitting antenna with respect to the maximum directivity of a half wave dipole multiplied by the net power accepted by the antenna from the connecting transmitter. Gain (of an antenna) The ratio of the maximum intensity in a given direction to the maximum radiation in the same direction from an isotropic radiator. Gain is a measure of the relative efficiency of a directional antennas as compared to an omni directional antenna. General Population/Uncontrolled Environment Defined by the FCC, as an area where RFR exposure may occur to persons who are unaware of the potential for exposure and who have no control of their exposure. General Population is also referenced as General Public. Generic Antenna For the purposes of this report, the use of Generic as an antenna model means the antenna information was not provided and could not be obtained while on site. In the event of unknown information, Sitesafe will use our industry specific knowledge of antenna models to select a worst case scenario antenna to model the site. Isotropic Antenna An antenna that is completely non-directional. In other words, an antenna that radiates energy equally in all directions. Maximum Measurement This measurement represents the single largest measurement recorded when performing a spatial average measurement. 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 17

Maximum Permissible Exposure (MPE) The rms and peak electric and magnetic field strength, their squares, or the plane-wave equivalent power densities associated with these fields to which a person may be exposed without harmful effect and with acceptable safety factor. Occupational/Controlled Environment Defined by the FCC, as an area where Radio Frequency Radiation (RFR) exposure may occur to persons who are aware of the potential for exposure as a condition of employment or specific activity and can exercise control over their exposure. OET Bulletin 65 Technical guideline developed by the FCC s Office of Engineering and Technology to determine the impact of Radio Frequency radiation on Humans. The guideline was published in August 1997. OSHA (Occupational Safety and Health Administration) Under the Occupational Safety and Health Act of 1970, employers are responsible for providing a safe and healthy workplace for their employees. OSHA's role is to promote the safety and health of America's working men and women by setting and enforcing standards; providing training, outreach and education; establishing partnerships; and encouraging continual process improvement in workplace safety and health. For more information, visit www.osha.gov. Radio Frequency Radiation Electromagnetic waves that are propagated from antennas through space. Spatial Average Measurement A technique used to average a minimum of ten (10) measurements taken in a ten (10) second interval from zero (0) to six (6) feet. This measurement is intended to model the average energy an average sized human body will absorb while present in an electromagnetic field of energy. Transmitter Power Output (TPO) The radio frequency output power of a transmitter s final radio frequency stage as measured at the output terminal while connected to a load. 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 18

Appendix C Rules & Regulations Explanation of Applicable Rules and Regulations The FCC has set forth guidelines in OET Bulletin 65 for human exposure to radio frequency electromagnetic fields. Specific regulations regarding this topic are listed in Part 1, Subpart I, of Title 47 in the Code of Federal Regulations. Currently, there are two different levels of MPE - General Public MPE and Occupational MPE. An individual classified as Occupational can be defined as an individual who has received appropriate RF training and meets the conditions outlined below. General Public is defined as anyone who does not meet the conditions of being Occupational. FCC and OSHA Rules and Regulations define compliance in terms of total exposure to total RF energy, regardless of location of or proximity to the sources of energy. It is the responsibility of all licensees to ensure these guidelines are maintained at all times. It is the ongoing responsibility of all licensees composing the site to maintain ongoing compliance with FCC rules and regulations. Individual licensees that contribute less than 5% MPE to any total area out of compliance are not responsible for corrective actions. OSHA has adopted and enforces the FCC s exposure guidelines. A building owner or site manager can use this report as part of an overall RF Health and Safety Policy. It is important for building owners/site managers to identify areas in excess of the General Population MPE and ensure that only persons qualified as Occupational are granted access to those areas. Occupational Environment Explained The FCC definition of Occupational exposure limits apply to persons who: are exposed to RF energy as a consequence of their employment; have been made aware of the possibility of exposure; and can exercise control over their exposure. OSHA guidelines go further to state that persons must complete RF Safety Awareness training and must be trained in the use of appropriate personal protective equipment. In order to consider this site an Occupational Environment, the site must be controlled to prevent access by any individuals classified as the General Public. Compliance is also maintained when any non-occupational individuals (the General Public) are prevented from accessing areas indicated as Red or Yellow in the attached RF Emissions diagram. In addition, a person must be aware of the RF environment into which they are entering. This can be accomplished by an RF Safety Awareness class, and by appropriate written documentation such as this Site Compliance Report. All T-Mobile employees who require access to this site must complete RF Safety Awareness training and must be trained in the use of appropriate personal protective equipment. 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 19

Appendix D General Safety Recommendations The following are general recommendations appropriate for any site with accessible areas in excess of 100% General Public MPE. These recommendations are not specific to this site. These are safety recommendations appropriate for typical site management, building management, and other tenant operations. 1. All individuals needing access to the main site (or the area indicated to be in excess of General Public MPE) should wear a personal RF Exposure monitor, successfully complete proper RF Safety Awareness training, and have and be trained in the use of appropriate personal protective equipment. 2. All individuals needing access to the main site should be instructed to read and obey all posted placards and signs. 3. The site should be routinely inspected and this or similar report updated with the addition of any antennas or upon any changes to the RF environment including: adding new antennas that may have been located on the site removing of any existing antennas changes in the radiating power or number of RF emitters 4. Post the appropriate NOTICE, CAUTION, or WARNING sign at the main site access point(s) and other locations as required. Note: Please refer to RF Exposure Diagrams in Appendix B, to inform everyone who has access to this site that beyond posted signs there may be levels in excess of the limits prescribed by the FCC. The signs below are examples of signs meeting FCC guidelines. 5. Ensure that the site door remains locked (or appropriately controlled) to deny access to the general public if deemed as policy by the building/site owner. 6. For a General Public environment the four color levels identified in this analysis can be interpreted in the following manner: Gray represents area at below 5% of the General Public MPE limits or below. This level is safe for a worker to be in at any time. Green represents areas predicted to be between 5% and 100% of the General Public MPE limits. This level is safe for a worker to be in at any time. 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 20

Blue represents areas predicted to be between 100% and 500% of the General Public MPE limits. This level is safe for a worker to be in at any time. Yellow represents areas predicted to be between 500% and 5000% of the General Public MPE limits. This level is safe for a worker to be in. Red areas indicated predicted levels greater than 5000% of the General Public MPE limits. This level is not safe for the General Public to be in. 7. For an Occupational environment the four color levels identified in this analysis can be interpreted in the following manner: Areas indicated as Gray are at 5% of the Occupational MPE limits or below. This level is safe for a worker to be in at any time. Green represents areas predicted to be between 5% and 20% of the Occupational MPE limits. This level is safe for a worker to be in at any time. Yellow represents areas predicted to be between 20% and 100% of the Occupational MPE limits. Only individuals that have been properly trained in RF Health and Safety should be allowed to work in this area. This is not an area that is suitable for the General Public to be in. Red areas indicated predicted levels greater than 100% of the Occupational MPE limits. This level is not safe for the Occupational worker to be in for prolonged periods of time. Special procedures must be adhered to such as lock out tag out procedures to minimize the workers exposure to EME. 8. Use of a Personal Protective Monitor: When working around antennas, Sitesafe strong recommends the use of a Personal Protective Monitor (PPM). Wearing a PPM will properly forewarn the individual prior to entering an RF exposure area. Keep a copy of this report available for all persons who must access the site. They should read this report and be aware of the potential hazards with regards to RF and MPE limits. Additional Information Additional RF information is available by visiting both www.sitesafe.com and www.fcc.gov/oet/rfsafety. OSHA has additional information available at: http://www.osha-slc.gov/sltc/radiofrequencyradiation. 200 N. Glebe Road Suite 1000 Arlington, VA 22203-3728 703.276.1100 info@sitesafe.com Page 21