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Home My WebLink About1480 Burlingame Avenue - Technical Study� Dtech communications YOUR RF SAFETY PARTNER RADIO FREQUENCY ELECTROMAGNETIC FIELDS EXPOSURE REPORT Prepared for AT&T c/o Caldwell Compliance Site Name: Central Burlingame Site ID: CCL00566 USID: 13300 FA ID: 10095832 Site Type: Rooftop � - � � °. ' «�'�� /s ; r, r rr� r ' - 1 .._- -. ' , . . . . ' � �. _ _r. �, ::::r,: _ __ _ _ _- �_ ,.� �* �r �j�t�� .. �/1 � ��i �� j,l,!'.l�l �..-f� .1I'� �'� � .t,�ai� I -_ ��J_l�j� _� _ 1 Located at: 1480 Burlingame Ave Burlingame, CA 94010 Latitude: 37.5770 / Longitude: -122.3498 Report Date: 2/19/2021 Report By: Jamie Santos `y� _ `� _� 1 .! �',e t I� ,! � ;� Based on FCC Rules and Regularions, AT&T Mobility is compliant. Page 1/16 TABLE OF CONTENTS 1.0 2.0 2.1 2.2 2.3 3.0 3.1 3.2 3.3 4.0 4.1 4.2 4.3 4.4 EXECUTIVESUMMARY ................................................................................................................................3 SITEDESCRIPTION ........................................................................................................................................4 SiteMap .............................................................................................................................................................4 SitePhotographs ...............................................................................................................................................5 AntennaInventory ...........................................................................................................................................8 ANALYSIS...........................................................................................................................................................9 E�sting Conditions ..........................................................................................................................................9 EmissionMeasurements ............................................................................................................................... 10 EmissionPredictions .................................................................................................................................... 11 CONCLUSION................................................................................................................................................ 13 Results............................................................................................................................................................. 13 Recommendation(s) ...................................................................................................................................... 13 Statementof Compliance ............................................................................................................................. 13 EngineerCertification ................................................................................................................................... 13 AppendiYA: Background ........................................................................................................................................... 14 Appendu� B: Measurement and/or Computer Simulation Methods ................................................................... 15 AppendixC: Limitations ............................................................................................................................................ 15 Appendix D: Sample AT&T RF advisory signs ..................................................................................................... 16 • � Dtech commun�mtro�s 5850 Oberlin Dnve, Ste. 300 ♦ San Diego, CA 92921 ♦ 858.792.0066 ♦�v:vu�.rltecb�om.co�� Page 2/16 1.0 EXECUTIVE SUMMARY Dtech Communications, LLC ("Dtech") has been retained by Caldwell Compliance, contractors to AT&T, to determine whether its wireless communications facility complies with the Federal Communications Cornnussion ("FCC") Radio Frequency ("RF") Safety Guidelines. This report contains a computer- simulated and on-site, measurement analysis of the Electromagnetic Fields ("EMF") exposure resulting from the facility. The analysis also includes assessment of existing wireless carriers on site, where information is provided. The table below summarizes the results at a glance: Table 9: EMF Summary <= � _ � Access T e Door Access to antennas locked Yes RF Si (s @ antennas Notice 2 �stin Barrier s@ sectors Stanchion with Chain �stin Max EMF simulated level for AT&T on Ground 2.8% General Population Max cumulative EMF measured level for 0.6% General Population facili on Ground Max EMF simulated level for 399.1% General Population AT&T on Roof 79.8% Occu ational Max EMF measured level for 45.9% General Population AT&T on Roof 9.2% Occu ational . � Dtech comm�n�co�ia,s 5850 Obe�lin Dnve, Ste. 300 � San Diego, CA 92121 ♦ 858J92.0066 ♦ tvwtv.dtechc•om.com Page 3/16 2.0 SITE DESCRIPTION The wireless telecommunication facility is located on a building rooftop. The facility consists of 5 wireless carrier(s) or operator(s): AT&T, T-Mobile, Clearwire and Other(s) (Omni & Dish). The antennas are typically grouped into sectors pointing in different direction to achieve the desired areas of coverage. AT&T's antennas are facade-mounted on the penthouse above the roof. 2.1 Site Map . � Dtech comm�,n�caipns 5850 Oberlirr Dnve, Ste. 300 � San Diego. CA 92121 ♦ 858.792.0066 ♦ w��u�ltech�om.com Page 4/ 16 2.2 Site Photographs - _ ,� '-;� "- N � ��:� -�""�� '� ;: r �i � � r -;� _ :__ -._r-= - ._. - �_- _ - �1��-' � _� _ - �. �-� 0 General site vie�v � � , (.� " y ! f.ii : � �.� � .r.'JTp(Y'�� ' R _ -.'� ..� �- :.. .. '- �. .� '"�r� r�_ . cmi �.' . ^ � / t�'�' �iw - y . , � . .� .�1J�I ..-..�V�--�/�'� -l-i ~^��... - �:5•�" • . ' ..�� i �' � �7 �f� ` � _� �4� �; � � � ;:�: �.�" f AT&T Sector � with Barrier & Norice _� � ..� > " ,..-a"'� �� \�1 �,� � � � � �=, � � _ - � �� ;. f�r�;r�- '►T�.� ��- `, `:�►�� : • �..��. ►-r �'�►� '`' -� � ,� a `i`-' .c. � A — '•'"+�w� ��•�� ' ��r� �� y � �+ � . �a � ,E � � � :. � � �� .- f ' a: � ,� . _ ,� � �, � � � � - '�r,., . ..- . - _..'':�. . .� -� �. -- — _ . � � _v�-.�'. AT&T Sector B with Baxrier & Norice • � Dtech comm�nrcarror,s 5850 Obei•lin DiiUe, Ste. 300 � Sara Diego, CA 92121 ♦ 8�8.792.0066 ♦ tvtvtv.dteche•an.c'an Page 5/16 AT&T Sector �� with Barriet & Notice 1`�T&"I' Sector A Barrier & Notice AT&T Sector 1� with Barrier & Norice �„- _ — � �t + r �� w�- � a[ E`I _ � --�., , _ ; , --. ,�, . �-� ,�,��. • -•- _ _ ,� � ��:�� , �� _ .� ��J � .c. , / ?'�94T r .,. ._ � � s'' � w` t, s �� / •+�,� . _ pps.. v. �,�t ¢�' �- � � � � AT&T Sector B Barrier & Notice �- � �'•A - 1_ ��,'-r.�, •• :"^ ••�• ~ T ,~ � ~ � ��[ : '�`: . � '� _ � .1, . � . �ti� _ .,� . ..R'. v �=-- - � _ �� r� l: --�-� �. � , Cc�;'�) _ �., �-�� _ �. �"�"`' .e `s� w . � : ..� , ..�:: . � �� 1 F� . .. � _ .� ` ` .. , � �_ � � . � r �� , � ��'�� ,�--�= ��_��,� �- �=-- - - - >,' :. r , � . .�."�2�' .. ° . a"'9+oc `y x �, � �.. �� ((��)) ---�-^—� — f � _. � �� .:-��Y : � � � ��`.��.,� �:: . - . . . � ` . . . . `� , � , f ' - . . ^{ .� _ s � +�,:, � .�� '� �� s �} . L..�'�', t ;�` - f � �d,i.,,� � ° � ''�~�-� � �� '. i.:.�6� �.x'-d: .r''.. �� :�+� �,�... �.... . ..... . AT&T Sector C Noticc � ,�. : ,.., � i��; ��r � ` � � a �� , ,. �� f ,. � ! �� , �: ; . � 4 � ' � � f '' '� � I� � w ��^Y' . , ,� ' # i, d i:: �� i F �F"` .�- Z¢ �`_-`-- `-�._,� _ �'.. � ! _ _ ,,, ---�— -�*� AT&T Sector B with Barrier & Notice - >,,.. k , ��YI , � ��- ., -' ;,, �� - �-_��. _ �, � � � y��w� `, �t ''.'.". �`�5° _: y ��,�p 'Y ° G 1 y, .,u:ri�'— . _„� �..' w I ��;, �fc : i�='�"`�. +�.. � ,. _.. . � AT&T Sector C with Barrier & Notice � . . 1 k� �� t. , I ' . r ��r. �'�� r- �� - j �� ' � ��- � ,�� ,!{ I � � 'a_ ��i� � , � - - �. � ��jjj--- i �k. . . � (... �� y : I { .i � � .— �„��_' � I 'yS zy ' _� . � / ! ' � �_J �r � �.� , �� .. � ` ��'� .. -.... " � � \_ _�....,- ..,..._� � � � ^� -� .. \ � � � 1„� � �� . .. \ . l\ . .�_.�'� A1'&T Sector C �vith Barrier & Notice • � Dtech commur,�cot�ons 5850 Oberlin Drive. Ste. 300 � San Diego. CA J2929 ♦ 858J92.0066 ♦�v:vw.dtec��can.iom Page 6/ 16 �T&T Sector B Notice �r,'.":' � ,,� .� �' � � � I ' f � f �"-.�..�, �'', , � _ � , � �' :.�,� ' .� , ; �4 �� . � ' �� Y yl� ii� ' t, � • $� �I � . �, � ,�,�{,,� ,� � --- -�'. �'.' � - f � '��[�"� � �- - - _" l,,. _ `�..., � �;?..,� __.� T-Mobile (left) & Cleanvire (right) Sector A � . _ '' I . � r: � � `� I r- _ _ � , �; F � ��, � �� i -�� ' �f:v - � , , �� _.�, , . . � -�Y � t �. _ — '� I R�`j4 �I t �� .' 4 F� �. � 1 �!t::'. . � I . T-Mobile (right) & Clearwire (left) Sector C �. � .�......; , k ��;ti � ,� ; � � / �� / '�... -� �� `� �.�:��_�_ __ ' �/��. "it:; � T-Mobile (left) & Clearwire (right) Sector B . � Dtech communfcaiions 5850 Oberliir D�iUe, Ste. 300 � San Diega, CA 92129 ♦ 858.792.00G6 � w�vw.dtechcom.com Page 7/16 _ � 2.3 Antenna Inventory The table below reflects the technical specifications provided by our clients and/or gathered from physical field surveys where applicable. This final configuration, including power settings and antenna orientations must be maintained to remain in compliance with FCC guidelines. For co-locators or nearby transmitters, conservative estimates are used for purposes of a cumulative study where information is not provided or available. Table 2: Site Technical Specification.r A1 A1 A1 A2 A2 A3 A3 A4 A4 B1 81 61 B2 B2 B3 B3 84 B4 C1 C1 C7 C2 C2 C3 C3 CA G A1 A1 B1 B1 C1 C1 1 2 3 1 2 7 2 AT&T AT&T AT&T AT&T AT&T ATRT AT&T AT&T AT&T ATBT AT&T AT&T AT&T AT&T AT&T ATBT AT&T AT&T AT&T AT&T AT&T AT&T AT&T AT&T AT&T AT&T AT&T T-Mobile T-Mobile T-Mobile T-Mobile T-Mobile T-Mo6ile Clearwire' Clearvvire• Clearvnre' Others' Others' Others' Others' Commscope Commscope Commscope Quintel Quintel Quintel Quintel Quintel Quintel Commscope Commscope Commscope Quintel Quintel Quintel Quintel Quintel Quintel Commscope Commscope Commscope Quintel Quintel Quintel Quintel Quintel Quintel Ericsson Ericsson Encsson Encsson Ericsson Ericsson RFS RFS RFS Andrew Andrew Andrew Andrew • � Dtech communkations Antenna Model NNHH85B-R4 NNHH-65B-R4 NNHH-65B-R4 QS6658-3e �566583e QS66583e QS66583e QS6658$ QS66583 NNHH�65B-R4 NNHH$SB-R4 NNHHb5B-R4 �566583e QS6658-3e QS6658-3e QS6658-3e QS665&3 QS6658-3 NNHHb58-R4 NNHHE58-R4 NNHH�65B-R4 Q56658-3 Q56658-3 �56658-3e QS6658-3e Q566583e Q566583e AIR32 B66A 82A AIR32 B66A B2A AIR32 B66A B2A AIR32 B66A B2A AIR32 B66A B2A AIR32 B66A B2A APXVLL73N-C APXVLLI3N-C APXVLLI3N-C VHLP800-i t-2GR VHLPXb-11/A DB589-Y D8589-Y Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Panel Dish Dish Whip Whip Frequency (MHz) 700 850 1900 700 850 700 2100 700 2300 700 850 1900 700 850 700 2100 700 2300 700 850 1900 700 2300 700 850 700 2100 1900 2700 7900 2100 1900 2100 2500 2500 2500 i0000 �0000 850 850 LiE LTE LTE (Shared) UMTS LTE (Shared) LTE LTE LiE LTE LTE LTE LTE (Sharecq UMTS LTE (Shared) LTE LTE LTE LTE LTE L7E LTE LTE LTE (Shared) UMTS LTE (Shared) LTE LTE LTE LTE LTE LiE L7E 320 320 320 320 320 320 320 320 320 2ao 200 20D 200 200 200 200 200 200 80 80 80 80 80 80 80 80 80 40 40 750 150 250 250 30 150 270 0 � ao 0 0 Bottom Tip Horizontal Antenna Antenna Total ERP Height Abo�e 66 64 61 65.5 64 65.5 60 65.5 60 ss 64 61 65.5 64 65.5 60 65.5 60 66 64 67 65.5 60 65.5 64 65.5 60 63 65 63 65 63 65 63 63 63 z.z i.i 360 360 6 6 6 6 6 6 6 6 6 s 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 4.7 4.7 4.7 4.7 4.7 4.7 4.5 4.5 4.5 z s 9 9 12.6 14.8 10.9 11.9 10.9 15.9 70.9 76.2 iz.� 12.6 14.8 10.9 17.9 10.9 15.9 10.9 16.2 12.1 12.6 14.8 10.9 16.2 10.9 11.9 10.9 75.9 15.4 15.9 15.4 15.9 15.4 15.9 15.9 15.9 15.9 34.8 aiz 9 9 2898 4809 980 933 980 9355 980 4169 2583 2898 4809 980 933 980 9355 980 4169 2583 2898 4809 980 4169 980 933 980 9355 4169 4677 4169 4677 4169 4677 2344 2344 2344 65 65 315 315 80.0 80.0 80.0 77.7 777 77.7 77.7 80.0 80.0 80.0 80.0 80.0 80.0 80.0 79.1 79.1 79.1 79.1 79.2 792 79.2 80.0 80.0 78.5 78.5 80.0 80.0 78.0 78.0 78.0 78.0 78.0 78.0 78.5 78.5 78.5 78.5 �8.5 83.5 83.5 5850 Oberfii� Drive, Ste. 300 � Sa�t Diego, CA 92129 ♦ 858.792.0066 ♦ ww�v.rltecbio�n.com Bottom Tip 8ottom Tip Height Abo�e Height Abo�e Roof ft Plattortn ft 11.4 9.6 11.4 9.8 11.4 9.8 9.1 WA 9.7 WA 9.1 WA 9.1 WA 11.4 WA 71.4 WA 11.4 WA 11.4 WA 17.4 WA N.4 WA 11.4 WA 10.5 WA 10.5 WA 10.5 WA 10.5 WA 10.6 WA 10.6 WA 10.6 WA 11.4 WA 71.4 WA 9.9 WA 9.9 N/A 11.4 WA 11.4 WA 9.5 WA 9.5 WA 9.5 WA 9.5 NIA 9.5 WA 9.5 WA 10.0 WA 10.0 N/A 70.0 WA 70.0 WA 10.0 WA 15.0 WA 15.0 WA Page 8/16 3.0 ANALYSIS 3.1 Existing Conditions Figure �: Site Diagram - Plan (bird'.r eye� viezv maj� of sign.r/ barrzerr currently exi.rting on .rite. Site Diagram Roof Level Roof Level � U;—\ 8;� ��' � � j Plafform d;�A � i =;4�-= �' _== \ _==:�• A �_---- r�lo _ _=� �9`�r�T � � EQ � � � �e,f -�'_�._ C:L� (N�J) ' i � � � m G�� B _ �^:+� _ @ Penthouse _ =-= m � s".:iiu, :� —@��— —(tY0 _ IV I Grid Size = 20 ft • � Dtech commun�cariau � � Access � Door � C \ �•n � a -- p;m _ _ _ � y� i I i !� AT&T 12j0 Omni 2 IT�T-Mobile 3 *1 Dish 2 i5'f Clearwire 3 __ __ ___, 5850 Obe�le�i Dr•iue, Ste. 300 ♦ San Diego, CA J212> ♦ 858J92.0066 ♦ mwry dtec6icoTrt com Page 9/ 16 i-- --- 3.2 Emission Measurements Field measurements were conducted at the subject site on 2/11/2021 9:00 AM by James McDaniel, Dtech personnel. Weather conditions can be best described as overcast, windy. Figure 2: Plan (bird'.r eye) vtelv maj� of re.rult.r compared to FCC'.r General Population MPE (Ma�rimu�n Permi.r.rible E.�o.rure) Limit.r. A re.rult higher than 100% exceeds the FCC'.r General Population MPE Limit.r. Measurement Diagram .._.. , i I ,� �� <5% //�� <5% Roof Level � 9.8% <5% \ <5°/a Roof Level N Elevation:68.6' Grid Size = 20 ft Additional Measurements Ground 0.6°/a � <5% Roof Level <5°k <5% <5°k A 6.2% <5% 4.9% ATBT platform 9.2°!0 9.7% Ma�c � 45.9°.6 18.1% TdVlO FqG4T��, <5% \ 0.7% EQ � o p�e�r 1.0% <5 /o <5% cw �E4 <5% <5°k B Penthouse �5% 36.6% 46.3% C 39.7% �$% <5% K5% <5% 5.8% 3.8% B 8.3% Access 1B.7% ; Door C <5% 37.6% 8.3% 0.8°% 3.7° <5% �5% � AT&T 12�b �mni 2 � T-Mobile 3 Ti Dish —� ,��Clearwirel � _--- • � Dtech commvnkofior,s 5850 Obe�li�t Driue, Ste. 300 � Sa�t Diego. CA 92121 ♦ 858.792.0066 ♦ mwu�.rltecbcom.�an Page 10/16 3.3 Emission Predictions Figure 3: Plan (bird'.r eye) viezv maj� of re.rult.r c•omj�ared to FCC'.r General Population MPE (Maximum Permi.r.rible Ea�o.rure) Limit,r for a tyj�ical 6 foot penron. Grey repre.rent.r area.r where e.xj�o.rure level.r are calczrlated to be at or beloav S%; Green- betzveen 5% �' 100% (beloav MPE limit.r); blue, yellou� e�' red — greater than 100% (exceeds MPE limits). Individual.r can .rafely occupy area.r in grey and green for indefinite amount of time; ivherea.r area.r in blue, yellozv �' red mu.rt be re.rtricted to KF trained per.ronnel u�ho ha.r been made fully au�are of potential for e.x�o.rure, ha,r control and knoiur hoav to reduce their exjiosure zvith the u.re af per.ronal protection equipment or ha.r the ability to pou�er dozvn the tran.rmitter.r. % of FCC General Public Exposure Limit � X 5 5 ■ 5< X s 100 ,■ 100 < X s 500 j� 500 < X s 5, 000 ■ X> 5, 000 Simulation Diagram � Ground Level Max Sim Levels o AT&T �12 O Omni 2 N Elevation:0� AT&T:2.8% = T-Mobile � 3*j Dish -' 2 � criasize=zon Cumuiative:2.8% gCiearwirel 3 i • 7 Dtech commvnKarKK,s 5850 Obe�lin Drive, Ste. 300 � San Diego, CA 92121 ♦ SSSJ92.0066 � wwm.rltechcom.com Page 11 /16 Figure 4: Plan (bird'.r eye� viezv maj� of re.rult,r comfiared to FCC'.r General Population MPE (Nlaximum Permi.r.rible E.xj�o.rur�) Lr�mit.r for a typical 6 foot per.ron. Grey repre,rent.r area,r zvhere e.�o.rure level.r are calculated to be at or belosv 5%; Green- bet�veen 5% �' 100% (belosv MPE limit.r); blue, yelloav d�' red — greater than 9 00% (exceed.r MPE limit.r). Individual,r can ,rafely occupy area.r in grey and green for indefinite amount of time; avherea.r area.r in blue, yello�v �' red mu.rt be re.rtricted to I�F trained per.ronnel zvho ha.r been made fully azvare of potential for ex�o.rure, ha.r control and knoaur hozv to reduce their eacpo,rure �itb the u.re of pexronal protection equipment or ha.r the ability to pozver dou�n the tran.rmitter.r. %of FCC General Public Exposure Limit � Xs5 '; . 5<X5100 !■ 100<Xs5D0 j� 500<Xs5,000 i■ X�5,000 Simulation Diagram Roof Level Max Sim Levels o AT&T 12 O Omni � N Elevation:S8.6� ATS.T: 389.1% ,��, T-Mobile 3♦ Dish � GridSize=20R Cumulative:401.5% i - — g;Clearwire 3 ; • 7 Dtech commurkotions 5850 Oberlin Dnve, Ste. 300 ♦ San Diego, CA 92121 ♦ SSSJ92.0066 ♦ ivmu�.�ltechcom.com Page 12/ 16 4.0 CONCLUSION 4.1 Results For a person standing in accessible areas on the ground, calculations and measurements for AT&T's site including contributions from existing carriers resulted in exposure levels below the FCC's most stringent General Population MPE Limits (see figure 2& 3). For a person standing on the roof, the highest calculated exposure level is above the FCC's General Population MPE Limits near the AT&T antennas (see figure 4). There are barriers and RF advisory sign(s) already posted at path(s) to and/or near the antennas to help establish awareness for exposure. However, there may be situations where workers i.e. window washers, painters, roofers, etc., may find themselves directly in front of the antennas. Individuals entering the site or working neax/in front of antennas must receive appropriate RF safety training and be made aware of the HotZones (areas where RF exposure may potentially exceed FCC safety limits). In addition, contact information should be made available in the event work is required within the HotZones. 4.2 Recommendation(s) Further actions are not required. 4.3 Statement of Compliance Based on the above results, analysis and recommendation(s), it is the undersigned's professional opinion that AT&T's site is compliant with the FCC's RF Safety Guidelines. 4.4 Engineer Certification This report has been prepared by or under the direction of the following Registexed Professional Engineer: Darang Tech, holding California registration number 16000. I have reviewed this report and believe it to be both true and accurate to the best of my knowledge. • � Dtech commun�canons 5850 Obeiliit D�zue, Ste. 300 � San Diego. CA 92>21 ♦ 858J92.00G6 ♦ �v�Yw.dteibcom.com Page 13/16 Appendix A: Background Dtech uses the FCC's guidelines described in detail in Office of Engineering & Technology, Bullerin No. 65 ("OET-65"� "Evaluaring Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields". The table below summarizes the current Maximum Permissible Exposure ("MPE") safety lirnits classified into two groups: General population and Occupational. Table 3: .FCC MPE Limits (from OET. -65) 30 - 300 0.2 30 1.0 6 300 - 1500 Frequency (Mhz)/1500 30 Frequency (Mhz)/300 � 0.2 — 1.0 1.0 — 5.0 1500 - 1.0 30 5.0 6 100,000 General population/uncontrolled limits apply in situations in which the general public may be exposed or in which persons who are exposed as a consequence of their employment, and may not be fully aware of the potential for exposure or cannot exercise control over their exposure. Therefore, members of the general public always fall under this category when exposure is not employment-related. Occupational/controlled limits apply in situations in which persons are exposed as a consequence of their employment, and those persons have been made fully aware of the potential for exposure and can exercise control over their exposure. Occupational/controlled 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, as long as the exposed person has been made fully aware of the potential for exposure and can exercise control over his or her exposure by leaving the area or by some otheY appropriate means. It is important to understand that the FCC guidelines specify e.�iosure limits not emission limits. For a transmitring facility to be out of compliance with the FCC's RF safety guidelines an area or areas where levels exceed the MPE limits must, first of all, be in some way acce.r.rible to the public or to workers. When accessibility to an area where excessive levels is appropriately restricted, the facility or operation can certify that it complies with the FCC requirements. . � Dtech comm�n�carpr,s 5850 Oberliu D�ive, Ste. 300 � Sait Diego, CA 92929 ♦ 858.792.0066 ♦�uwlv.dtec%com.com Page 14/ 16 Appendix B: Measurement and/or Computer Simulation Methods Spatial averaging measurement technique is used. An area between 2 and 6 feet, appro�rnately the size of an average human, is scanned in single passes from top to bottom in multiple planes. When possible, measurements were made at very close pro�mity to the antennas and inside the main beam where most of the energy is emitted. The spatial averaged values were recorded. Dtech uses an industry standard powex density prediction computer Model' to assess the worse-case, cumulative EMF impact of the surrounding areas of the subject site. The Model does not take into account losses due to buildings. Its methodologies are conservative enough to account for typical down-tilts deployed in wireless communications. In addition, the analysis is performed at 100% duty cycle-all transmitters are active at all times and transmitting at maxirrium power. For purposes of a cumulative study, nearby transmitters are included where possible. The result is a surrounding area map color-coded to percentages of the applicable FCC's MPE Limits. A result higher than 100% exceeds the Limits. Appendix C: Limitations The conclusions in this document rendered by Dtech are based solely upon the information collected during the site survey and/or furnished by our Client which Dtech believes is accurate and correct. Dtech, however, has no responsibility should such Client provided information prove to be inaccurate or incorrect. Third party specificarion estimates used for cumulative computer simularion purposes, where applicable, are based on common industry practices and our best interpretation of available information. Data, results and conclusions in this document are valid as of its date. However, as mobile technologies continuously change, these data, results and conclusions may also be at variance with such future changes. Dtech has no responsibility to update its survey or report to account for such future technology changes. This document was prepaYed for the use of oux Client only and cannot be utilized by any third party for any purpose without Dtech's written consent. Dtech shall have no liability for any unauthorized use of this document and any such unauthorized user shall defend, indemnify and hold Dtech and its owners, directors, officers and employees harmless from and against any liability, claim, demand, loss or expense (including reasonable attorney's fees) arising from such unauthorized use. 1 Roofview� Version 4.15, Richard Tcll Associates, Inc. � 1996-2000. • 7 Dtech commu��casor,s 5850 Oberlin Drive, Ste. 300 � San Diego, CA 92121 ♦ 858J92.0066 ♦ mwW.dtechc•om.ioni Page 15/ 16 Appendix D: Sample AT&TZ RF advisory signs �<<'�� ATiT opmdt �nqnn�s �I tld� fiU. I�d lYb ►aYl rou �ro e�erinp �e ra ■h�e r�o Imqoaic} (RFl MI4un7 anN tlM FCC Geanl ►ooul�fion E�un lMib. kMow �Me70alANiner fa wakln� I� �a AF �mlra�miA. WalKt AT{T N�217t ind hlew tMdr �o�yr�W+m�a�w�rw ar nNia Ma�e ipit panl ��.ti��n I�YMN�INY �j N011Ce Z S1gY1 ,�- - �. A CAUTION � t�,�,�} ATiT oqertla �mennn tt tlik flh. bNM 1w ►N�t pu �re amilip �a uu rea. r.am eww� c�) n.�a� a,r.u�r . Ib� FCC Oec�p�tloiW E�pawn li�nEh. �pa '� Fabr uMl9oidNYw far NaAYq I� m IIF �nhwl�IM. i C�etATLTn1AFp1-t� W hRerlY�k IMnellaa phr to prlsnlM m� �hwn ar np�i� Mpn1 Mi pNM. �'. � .� a ir�mtr • � Caution 2 Sign (8" x 12") Caution 2C Sign (5" x 7") _._ __.___,_ . , : _ .. - ING ATBT opentee anhnnae at this fih. i��nd lIk PoYt rou are mtering an aroe where radia hequency (RFl fields exaeQ Me FCC Oecupational E�pawro Limits. CamactATBT at800�638-7872, uptlmq 9 end 3, aM requal as�ance prbr lo proaeding bEraM Ihis pOiM. hilun lo fobw s�ftry guideline lo� rrorking In n RF emtmneM uuld �u1 in saiaus inryry. • Warning 1B Sign • ACAUTION ' . '' R�.'�) ; On this tower: Radio hequer¢y (AF) fiNds near some antennn nq arn/ IAe fCC Oaupahonal 6posurc limils. Contacl AT6T �t d00�638�2812, op�ion 9 �M 3, and lolbw IhNr insW ctims pbr ro perlaming mainten�nce a rcwirs beyond thls polnt. Personnel dlmbmg this tower sAould be ualned lor xrorkmg In Af mnronmems and uu a personal Af monita If worklnq near a(Ilve antenn7t. • �...M... �....�.�,. _ . Caution Sign 2B Alternate for Towers '- The above signage is for reference only Actual signs may bc updated in accordance to A'I'&'I' RI' policy. • � Dtech communKatior,s 5850 Oberli�t D�zue. Ste. 300 � Sau Diego, CA 92121 ♦ 858J92.0066 ♦ wmzv.dtecbrom.com Page 16/ 16 � � DteC� �:.� ,�'�� cornmunicotions ; �`�?�'� �� '�:a' �'�a�� _. .,� � �.:.v.�_� ._ ��_._��.: _. � � . �. ..,., m�,. �� ....��._ .,.... �... �. .��t . ...h. 1.._. .. ,. �_ �� .. ��. - ,� ,.�:� ; :�� .�_. �� .��,..��,�� RADTO FREQUENCY ELECTROMAGNETIC FIELDS EXPOSURE REPORT Prepared for AT&T cf o J5 Infrastructure Partners Site Name: Ccntral 13�xrlin�asr�v Site ID: �:�;1�{�t7��G USID: 9:>aQ0 FA ID: 7t�i�9583? Site Type: �.00i:top Located at: 1480 Burlingame A� e Burlingame, CA 94010 Latitude: 37.5770 / Longitude: -122.3498 Report Date: �J2/202�3 Report By: Jaraiie S=�ntas Based on FCC Rules and Regulations, AT&T Mobility will be compliant provided recommendation(s) are implemented Page 1/1a TABLE OF CONTENTS 1.0 EXECU'I"IVE SUMMARY ................................................................................................................................3 2.0 SITE DESCRIPTTON ........................................................................................................................................4 2.1 Site Map ' .............................................................................................................................................................4 2.2 Antenna Invento ry ...........................................................................................................................................5 3.0 ANALZ'SIS ............................................................................................................................................................G ; 3.1 Emission Predictions .......................................................................................................................................6 4.0 CONCLUSION .............................................................................................................................. ................9 4.1 Results ................................................................................................................................................................9 4.2 Recommendation(s) .....................................................................................................................................10 43 Statement of Compliance .............................................................................................................................11 4.4 Engineer Certification ...................................................................................................................................11 AppendixA: Background ..... .................................................................................................................................... 12 Appendix B: Measurement and/or Computer Simulation Methods ................................................................... 13 ' AppendixC: Limitations ............................................................................................................................................13 ' Appendi� D: AntennaView� .................................................................................................................................... 14 `, AppendixE: AT&T RF advisory signs ....................................................................................................................15 � `'� Dtech �c��- x-��±�s >g;(7 t)f. t�+r 1.7i,:.<; S:r� 3(�0 d. ti,;•r D�i�a, G�1 9?17t A 858. �%20f1(6 A > v.rr�r-�,.�os=,.rr�>.r Page 2/15 1.0 EXECUTIVE SUMMARY Dtech Communications, LLC ("Dtech'� has been retained by JS Infrastructure Partners, contractors to AT&T, to detertnine whether its wireless communications facility complies with the Federal Communications Cominission ("FCC'j Radio Frequency ("RF'� Safery Guidelines. This report contains a computer-simulated analysis of the Electromagnetic Fields ("EMF'� exposure resulting from the facility. The �nalysis also includes assessment of e�sting wireless carriers on site, where informarion is provided. The table below summarizes the result at a glance: Table 1: EMF Sunsmary � ��' I��'eC�t �''c ,;�urx�ar+u : S'.ff� Oi�er�i�s L7�iic; Slt. .iC?0 A 1,,r, Z)a��e, �-i 4?t?7 8 P)8.�92.0(1h( � T�,;,... r. Page 3/15 , _ . _ ._....., . _ __ ___. , ._ _ _......_ _ _ ._,. ...... __. _ _ . . _. . ....... ........: 2.0 SITE DESCRIPTION The wireless telecommunicarion faciliry is located on a builcling rooftop. The facility consists of 3 wireless . carrier(s) or operator(s): AT&T Mobility, T-Mobile and Clearwire. The antennas are typically grouped into sectors pointing in different direction to achieve the desired areas of coverage. AT&T Mobiiit}�s antennas are facade-mounted on the penthouse above the roof and connected to the equipment via cables. 2.1 Site Map � `�y. Dtech f�n�r-a�u^'�c s i8�0 Okr� >��r 1?ir�, t'te. 30L� A.C�a t Dec�c+� C.fi 921 J1 �&58.7J2.QJ(( A,>,.r� /. t,,:�r�.rn� r Page 4/15 2.2 Antenna Invcntory Technical specifications in the table below are provided by our clients or gathered from physical field surveys where applicable and/or possible. Conservative estimates are used where information is not provided or available. Table 2: Site Techfrical Specificatioiu A7__. ATST c.mimsCape�:. ..NN-IHE58-R4 Panel': 700...__.._...L7E 37D ;....66 ._...6 121 2583 80.0 17.4 : 9.8 '. ._... ....... ...... ._._..... ...... . .... ..._ .._ _ ..__.._.. ____. A7.... ATBT_.._Cammscope; NNiH-65B�t4...__. Pandi _ 850............_�7E. ......_320 64 j........6.. 126 2&90 80.0_.. 11.4 9.8..... ' .. .. .... .... _... . ... : 61 :� 6 : 14.8 4809....: 80.0 : 11.4 � 9.8 " !....A1 ATdS Canmsccpej. NMiF4656-R4 Paidi 190D L7E ........_320 ....... . . . .................. ........._.___..__.., A2...., AT&T_.... Quintd �: Q56658-3e .....-.. PanA-.....7D0 L7E Shared 32D �65.5 ...6 70.9 98D 77J... 9.7 � WA � ....., ...._.... . _.._ _.� ..... )_..... .. ... _.. .... . � ......... ... . _...... ..._.- A2 ATBT_.... �uirtld :...........QS665&3e.......... Pand�: &50 ....... UM75 320 J.......64 ........6.. 11.9 933 77J... - 9.1 WA ; .... . . _ . .... .. ...... � A3 AT&T � Qumtd ...; �S6G5�3e Panel.'....700 .:LiE_(Shared) .....320 .._65.5 ;........6 10.9 980 P7 9.1. ....WA : .... .._... .... . .. . .....: A3 AT&T.._... QuvAel : Q56658�3e....._.. PanAl.__2100...._..._...LTE ......3� � 6D 6 15.9 9355.... 77J.... � . 9.1_ .._WA : ...._ �...... . ._...... .. ..._. .__.:. A4 AT&T � Quinld....: Q5�6583 Pandl 700__.._._ LTE 320 65.5 8 10.9 980....; 80.0 : 11.4 ...WA : . .__..__ . -. . . . ....... ... . . ._ �.......... .__._. _... . . ..._. ..... . A4..._ AT&T �uinid j QSfi6583 Paid: 23W ..L7E ......3� -...W .....6 1G2 4765 80.0 � 71.1 WA ! ._... ___. . ....... ..._.... _..... ... ....; . .... .._ _ . ._... __..._. Bl ATdT �Commsccpei. NNiH658-R4 Pand:� 7D0 � l7E Z(ID 66 .....6 121 2583 �. 80.0 71.4 . WA �. _ .. _.. ,._... ..._.__..... . _ . .. .. ..._ _ . ......_.. 81 ' ATBT Commucpel NN-IH658i24...._. Pand.i.....850......._.....17E _..._Z00 �....64 __._.6 126. .. 2898.... 80.0.... ' 11.4 ....WA 81.... ATBT_...Canmscopa.� NN-IH-65B�R4....... Pand:.....1900__.._... ��..._.�......200 ...61 .... ..._6.. 74.8. .. 4809_.. 80.0 11.4 ......WA .....; 62 ATBT � Qumld : 0.5665&3e Pand` 700 L7E Shared 2W : 65.5 ' 6 ' 10.9 9B0 80.0.... 11.4 WA � _. ._. ...... . ._....... ..__. ...._.__..._� )....... ' . .. . _ ._... .. . .. . __. _.. ........; ,.... B2 ATBT_..,. Qumld ` _....... QS665&3e.......... . Pand'�. 850 � UM75..... _.....20D ...64 ._.. B 11.9 933 80.0 11.4 WA ; ..... . _ . ..... .. . . . .. ..._ . ... . ..... . .. . ......... ........ B3 ATBT �uiMd '; qSfi658-3e.......... Pand::.....7(10 .�L7E (Shared)......ZOD :..65.5 .....6.. . 10.9 980 79.1 10.5 WA : _..._ ..... _..._._.._ . . . . . _ . .._., 83.... ATBT Wirtld.....; QS665&3e Panel! 21W ITE.... ZIXI � 60 � 6 � 15.9 9355....� 79.1.... .' 10.5 : ....WA ; __. . _.. . _._. _.._.._..... . ! _ _........ ..._ ...... _........ B4 AT&T �uintd : QS6658J Pand: 700 LiE ... . 200 65.5 .....6 10.9 980 .... 78.1.... 10.5 ........... WA : _... ..._.. .._..... . .. . ._.. . ......_. 84-... AT&T ...�. �umtd ...: QS66583 ....... Pand.......230D.... LiE � 200 .fi0 ......8 18.2 4169.... 79.1 10.5 ' WA � .... ...._. . ... . ..... . ....._ . . . . . ... ._......�: � Ci A7&T Commscopa.; NNFIH858{24 ... Pand: )00........ _L7E .. ......80 .66 ... 8 : 721 2583..... 79.2.... _ 70.6 �.........WA ' . .... .. . .... _ .._ . __. .. .__. .. . . .... .........: C1.... ATBT....-Commscq�e_ NNHH858R4..._.. Pand......850. ..__....LiE �_..._.80 �....64 6 ' 126 2898 79.2_.. 10.6 WA......... ._.. ..._... __.. .._ .. . . . .... . Ct_... AT&T...,Canmscope_: ..NKiH65B-R4._..... Pand-: 7900 L7E ............80 61 ...6_ ' 14.8 4809 79.2 ...._..10.6 ...._._..WA ; . .. . .. _ . . .._., C2 AT&T Ouintel - Q566583 Pa1d;.....700 ..........LiE 80 . 65.5 ; 6 : 10.9. 980 ..... 80.0 �-- : 11.4 �� WA : . .... _..... .......__... ... . _ ___. ........ ....._ _ . __.. .......... C2 ATBT Wmtd _. QSG6S83. ....... Pand ._.230D ' L7E '.....80 6D ....._.6 1G2 4169.... 80.0.._ 11.4 PYA � . .. . ....... _ _ _ ...... . .. _..... .._ ._...._. .. ........ _... ..__ . _ .._ _._ .._ .._ .. .. _..........: - C3 AT&T �intd � .QSfi65&3a..._...... Pandr 700 ...:LTE(Shared)..._..80 :.....65.5 ..;.....__6 10.9. ......960...... , 78.5...... , ......9.9 .. .::.........WA .......: �...... ..... ....... . !.. ._._. C3..... AT&T._... QuuAd ;. . 0.5665&3e...__.... Paid:�.....850 � UM75 ._......._80 64 :,.......6 11.9 933 ; 7&5 ��. 9.9 .� WA ' .. . . ...._ _... . ._. . .. ._........ ...._...: Gt ATBT Ouintd [ pSfi658-3e._........ Pand-. 700 L7E{SRared).._...80 65.5 6 10.9 980 80.0 11.4 _..WA ', ..... .._... ..._ . .. ..._ . . . . . .......... CA ATBT Qumtel.....f ..............�Sfi65&3e......... Pand- 2t00 � L7E...............80 fi0 ......._.6� 75.9 9355_. 80.0... 11.4 � WA........; __- .._. ... . . . . .. . . : A1..._ TJ.lohle Encsson...�; AIR32B66A 82A Pand- 1900 .......L7E 40 .....fi3 4.7 . 15.4 4169....:. 78.0.... : 9.5 :.....WA : . ._._ ... .._. ,..... ........_ ...__... ..... .. . .. . . . . . ...__. ... :......._. ... . . . ..... .... A1 . TJAo6iie Ericsson...;. AIR32 866A_B4A PanA'. 2100 LTE 40 ; 65 4.7 15.9 467I... 78.0.... B.5 WA ; ...... .._.. . . . _._ . ......_. A2... T-Mohle.... RFS :APXI6DWV46DWVS-E-A20Pand� 1900 GSMiUMTS�.....40 �......65 4.7 15.9 2331.... 780.... 8.5 WA ; _... .... .. ...._ . .... .... . .... ..__. B7...... T-Modle Eacsson..... AIR32B66A 82A_.... ..PanA: 1500 .. ..L7E _.....150.. ;......fi3 4.7 15.4 4169 78.0 9.5.. .WA ... . . _.. ._ .__J B7 T-Mo6ile Encsson � AIR32866A_B2A PanA'.....2100 ........liE 750 : 65 ' 4.7 �� 75.9 4677 � 78.0... r 9.5 ' WA � ..._. ._: .. :. .. . . _..... . _ .._, . _... _. . ......_ ....__.. :..... ..... . ... 62.... TMoGile RFS :APJCI6GWV-06DWVS E-A20 Pand� 7900 GSlNUMTS 150 � 65 4.7 15.9 2331_.. 78.0_.. 9.5 .�......... WA ... . ..... .... .. . ..._ , . . .... .: Ct.._. TlAo6iie.. . Eriwsan �: AIR32 B66Ar82A Pand -...1900 ...L7E 250 �.......fi3 ° 4.7 :- 7S4 4169 � 7a0 i� 9.5.. . � WA �. _. .. _.._ . . .. _ .._ . . .. .__ .._..__ .......; _..._ . C7 TMoGie Encssan -� AIR32866A_62A.... Pand:-...21W ........L7E 250 ....65 4.7 15.9 � 46T7.-.. ..78.D.... .....9.5 WA � ..... ....:. _.. ......_ __ .. . . ..... ... . ._...__ ......: C2 T�.fodle�... RFS SAPXI6DWV-16DWVS-EA20 Pane1�:.....1900......GSM/UMTS ?50 .......65 4.7 15.9 2331..... 7&0.... . 9.5 .. .......FYA .......: __._ _... ...., . . . . . . ._. . . .. . . 1..... Clearvnra'__ RFS _..:. APJNLL73NL Pand�� 2500 ._._... 30 63 ._...4.5 . 15.9 2344 78.5.... 70.0 WA �. .._.... �...... ... _..... _..... . . ..._ , ._._..., __...2...... qearwi`e'.... RFS ! APXVLLI3N� Pand�: 2500 - 150 6'1 4.5 :.....15.9 2344....�. 78.5 � 10.0 :..-......WA ' _ ... ..._ . _ . . ._. .. ._. . .. .._.. ......_�. . 3 pea�wire•' RFS....: APXVLL73N-C......_ Pane1......2500 ..... ......,Z7D 63 4.5 15.9 23M._. 78.5.._ � 10.D .....WA........; ...... ..... ... _ . . ...... . . . 1 Olhas'..� Mdrew.....: VHlP8D4112GR..... Qsh; 1000D ...... 0 ....._22 .....2 34.8 65...... 78.5 10.0 WA � . .... ...... .... . __. ......_, 2..... Olhers' Mdrew....: VHLP�11lA � Qsh .� 10000 ...... .......1&1 : 1.1 ' 6 : 41.2 � 65 �� 78.5 : 10.0. �....... WA _ . . ._....__. . ... . ..._ . . . ._. __ . ._.....� ..1...... Others'....- Mdraw : D8589Y ....._. WM .....&50 . . . ......_� ..360 .....9 9 315 83.5 15.0 WA �. .. ...._ ._ _._ . ..... ....... . _.._..., .. .... ..._. ...... .. ...... P ..... _....... . ._.._ . ' ,2 Otlters' M�ew.....'. .. .........08589Y............ Wld 850 .. . .. . ....._....._� 360 ......9... ,_......9_... 315 83.5 75.0 WA : _.... . ....... . . . . :...... .. .. ... „ .._.. . - . ...... .. ...... . ...... . _...._. 6 � D�eCi� ca�.�k:e--„r:s �85Q Oi,�rkn I?na ,.Stz. jCit7 � Sa�r I�zc;r, Gr3 '12121 m' R>R.792.ODu`/ A , r 1�� .:r, �:, Page 5/15 _ _.. . 3.0 ANALYSIS 3.1 Emission Predictions Figren 1: Plan (Gird'r eye) tren� nra�ii of rerr�ltr com�ared to FCC'.c General Poj�rrlatlon A1PE (��1a.�mrrm Pernei.r�rble E�porn�) I1mit.r. Gray relin.rent.r a�ru tthere �.�osrire lec�l.r are arlerelated to Ge at or belory S%; Green- Getu�ren S% d�' 100"/0 (belosv 111PE limitr); Glrre, yellom � red —greater il�an 100% (exeeed.c MPE Gmits). Individrral.r can safely ocn�y aren.r ingray andgmen for i�rdefiirite anrorrnt of time; uhereru area.c in Gbre, yellosv d�' md nrrrst Ge re.rtricted to RF trained j�erso�mel tz�bo bcu Gecn macle frrlly arvare ofpotentialfor expo.r:rre, hru control �nd krrov�.r hory to redrree their expo.rrrre u�itb the ure of per.rotral protection egui�merrt or ji�rs the abiliiy to potver dottn 1he tran.rmilter.r. � '"� Dtech �ca�rt�t�c��;s �3�() Of� ru): I?�ite, Sre. 3UL� A.tiaN Dn�v, Cf� 9?lZf �:I53.79? 0!1//, A.�:��s r� t.-•,•,, s-�•�+ Page 6/] � %of FCC General Pubiic Facposure limit s � X s 5 z� 5< X s 10A � 1 �0 < X s 500 {� 500 � X s 5,0(79 q� X> 5,OQ0 Figse�� 2.• Plau (bi,d's eye) rrieu� mcp of ��.rult.c conrpured to FCC'a Genera! Populatian MPE (MO.kTT/1Nlil PCf7111fJlJ7IC Expo.cure) Limitr. Gray re�re.cent.r a��cu mhe� e.xj�o.cure levels are calculated ta be at or below S%; G�een- behveen S% d�' 100% (belotv MPE limit.c); blue, yellou� �' ��d —greater� thais l0U% (exteed.r MI'E limit.c). Individual.r cast aafely occupy a��as in gray arsd gree�i for itsdefinite amou�tt of ti�rre; rvhereac area.r in blue, yelloiv � red n�u.rt be re.rtrzcted to BF trai�sed pe�:ro�Jnel uho ha.r beetJ made frrly auare ofpotentialfor ex�o.rs�re, ha.c control a�Jd k�sow.c liolv to reduce tl�eir exj�oJure uith tbe ure of pe�:co�aal p�ntection equipmci7t o�• haf the ability to pou�er dotvrt tlJe hatr.rmitte�s. %af FCC General Public Exposure Limit � X s 5 g� 5< X s 1 E)Q j� 100 <X s 50fl �� 540 <X s 5,004 �� X> 5,D00 � , . � ;� Dfech � cwrrmur:�:cacrs i8.f0 Oi;�r/u I)�rcr, .Ste. 3Cic� � S�: Z)ae;r;, rFi 92127 !?>8.%92.lI�6( 3r n,.�,:� 1, ::_.:�,,;, Page 7/15 ___. �__.__. ._........ _....._._... _._._ _ _._.._. _..,......_. . ..._........ _ ._. , ...._....... . _....__.... Figrare 3: Plan (bird'.r ��e) vietv map of re.rulxc co�f�pared to FCC°c General Population MPE (1llaximu»r Perr�li.r.rible E:u�a.rure) Linrits. Gray repre.ce�tt.c arec�r ulhe� e.�.�o.rtere Ievek �rre caku/ated to Ue at or belory S%; Gree�r- behveerr S% � 100% (Gelalv MPE linrit.r); blrte, yellou� d� ��d —greater tl�an 100% (exceed.c MPE limit.r). Indiandr�alf carr .rafely occsrpy arecxr i�s gray arrdgreen for i�rdefittite amourrt of time; rvherecxc areac rn blrre, yeldon� d� red mu.ct l�e ��rtricted to AF trai�red per.conne! �vho h�r been »>ade frrlly amare of potential for ex�io.rure, hc�r contro! and knorv.c hon� to reduce their ea��io.rure mitJ� the u.re ofpersonalpmtection equipment or ha.r the nbility to pon�er do�vn the tran.rnritte�s. %of FCC Ge�eral Pubfic Exposure L.imit � Xs5 �� 5<Xs1�0 � 10Q<X5500 �� 5�1<Xs�,000 f� X?S,QOQ c � Dtech c.�� ,v-��s iS50 Oh�v',,, ll:it�, S'ta. 3(1(l A S�:�r Z�ie�a, G-� 92121 �.458J12.0(16G �,��r�.�a r1 r f,o.=r.co,>,E Page 8/15 4.0 CONCLUSION 4.1 Results For a person standing in accessible aseas on the ground, calculations for AT&T Mobility's site including contributions from e�sting carriers resulted in exposure levels below the FCC's most stringent General Population 1�ZPE Litnits (see figure 1). For a person standing on the roof and platform, the highest calculated exposure level is above the FCC's General Population l�IPE Limits near the AT&T antennas (see figure 2- 3). There may be situations where workers i.e. window washers, painters, roofers, etc., may find themsel��es direcdy in front of the antennas. Individuals entering the site or working near/in front of antennas must receive appropriate RF safetp training' and be made aware of the HotZones (areas where RF exposure may potentially exceed FCC safety limits). In addition, contact information should be made available in the event work is required within the HotZones. Mitigation measures for other carriers at this faciliry may be required but have not been determined as part of this report ! See Appendix Eor Dtcch's RF Safety uaini� pfogram - AntennaViea�' s � Dtecn tcaxm��:c�uu �b'SOOixrbnl7�;ic, S'tz. 3G0 �.S�:nLJF�,., GFl J?I2! $► �Y>8.%J�.O(1rG 0;��,;,., 7r,, l._:;.�,,j:, Page 9/15 _...__.. ._ _. . ... 4.2 Recommendation(s) The following compliance action(s) would be sufficient to meet the FCC's and AT&T"s RF Safety Guidelines (see figure 4): 1) If pemutted, access to rhe roof deck should be kept locked to restrict routine access by the general public. 2) Install physical barriers at all sectors as shown below to demarcate the restricted areas. 3) Install NOTICE #2 Sign(s) on the perimeter of the barriers and the inside of the door that leads out near the sector B. The signs must be visible from any direction prior to entering the restricted areas. Figure 4: Reconnnendation(s} � � Dfe�ch >8�U pi�n''r. I�ii.r, Stz 3�L> A.C�r;r I�zr�n, Cf1 9?1_7! A&53.7n2.00G( .d� z:"+nr r1 I,,r+t, ro�.r Page 10/15 4.3 Statement of Compliance Based on the above results, analysis and recommendation(s), it is the undersigned's professional opinion that AT&T's site including contributions from e�sting carriers will be compliant with the FCC's and AT&T"s RF Safety Guidelines provided recommendation(s) are implemented. 4.4 Engineer Certification This report has been prepared by or under the direction of the following Registered Professional Engineer: Darang Tech, holding California registration number 16000. I have reviewed this report and believe it to be both true and accurate to the best of my l�nowledge. � � �- Dazan Tec , P.E. � 3 � I 16000 - � Ezp.U6� /21 1t t�`� ',v d�j,� Fc�p`p � \\�F CAI�F% � " �� D�eCh � Page 11/15 %�'cerr:n��.�:*�: >:ySO Oh�rGr, I7Jite. Stt. 3C0 � Sa1: L)a,..c, GFi J2121 1"a ��8.%92(�6! a:;ri�� 1�u Y.;;�.,��°•r _._._.__ ... .. _.._. .. . _.__ ._ ........ .............. _._... .. ,_... . .. ._.....,_.... ,.. ......_._. . ___ . ..__. ......._..... Appendix A: Background Dtech uses rhe FCC's guidelines described in detail in Office of Engineering & Technology, Bullerin No. 65 ("OET-65'� "Evaluaring Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields". The table below summarizes the current MaYimum Permissible Exposure ("DZPE'� safety limits classified into two groups: General population and Occupational. General population/uncontrolled limits apply in situations in which rhe general public may be e�cposed or in which persons who ate e�osed as a consequrnce of their employment, and may not be fully aware of the potential for e�osure or cannot exercise control over their exposure. Therefore, members of the b neral public always fall under this category when exposure is not employment-related. Occupational/controlled limits apply in situations in which persons are e�osed as a consequence of their employment, and those persons have been made fully aware of the potential for exposure r�i can exercise conuol over their e�osure. OccupadonalJcontrolled 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, as long as the exposed person has been made fully aware of the potential for exposure and can exercise control over his or her exposure by leaving the area or by some other appropriate means. It is important to understand rhat the FCC guidelines specify ea.po.cure limits not emu.cion limits. For a transmitting facility to be out of compliance with the FCC's RF safety guidelines an area or areas where levels exceed the l�1PE limits must, first of all, be in some way acce.cril�le to the public or to workers. When accessibility to an area where excessive levels is appropriately restricted, the facility or operation can certify that it complies with the FCC requirements. ¢ � �' �fech ✓'�c�-,-.r,�^ar'cx., i8300bc�.',z Drrar, C'tz 300 A�a�Y t�ic�o, Cf1 9212J A&SSJ`J2.QOL� d Y-� a. �l. �.�.,,•, Page 12/15 _..... _._ _ . __.._ _...___. __..... _. _......_ __._ _......._... Table 3: FCC 11�fPE Linaits (fror�r OET-6S) Appendix B: Measurement and/or Computer Simulation Methods Spatial averaging measurement technique is used. An area between 2 and 6 feet, appro�umately the size of an average human, is scanned in single passes from top to bottom in multiple planes. When possible, measurements were made at very close pro�:imity to the antennas and inside the main beam where most of the energy is emitted. The sparial averaged values were recorded. Dtech uses an indusrry standard power density prediction computer Mode12 to assess the worse-case, cumulative E14iF impact of the surrounding areas of the subject site. The DTodel does not take into account losses due to buildings. Its methodologies are conservative enough to account for typical down-tilts deployed in wireless communications. In addition, the analysis is performed at 100% duty cycle-all transmitters are active at all times and transmitting at ma�mum power. For purposes of a cumulative study, nearby transmitters are included where possible. The result is a surrounding area map color-coded to percentages of the applicable FCC's MPE Limits. A result higher than 100% exceeds the Limits. Appendi�t C: Limitations The conclusions in this document rendered by Dtech are based solely upon the information collected during the site survey and/or furnished by our Client which Dtech believes is accurate and correct. Dtech, however, has no responsibiliry should such Client provided information prove to be inaccurate or incorrect Third party specificarion estimates used for cumulative computer simulation purposes, �vhere applicable, are based on common industry practices and our best interpretation of available information. Data, results and conclusions in this document are valid as of its date. However, as mobile technologies continuously change, these data, results and conclusions may also be at variance with such future changes. Dtech has no responsibiliry to update its survey or report to account for such future technology changes. This document was prepared for the use of our Client only and cannot be utilized by any third party for any purpose without Dtech's written consent. Dtech shall have no liability for any unauthorized use of this document and any such unauthorized user shall defend, indemnify and hold Dtech and its owners, directors, officers and employees harmless from and against any liability, claim, demand, loss or expense (including reasonable attorne�s fees) arising from such unauthorized use. 2 Roofview� Vession 4.15, Richatd Tell Associates, Inc_ � 1996-�00. a � D�eCh cu,r�r,c,rxJm,xs jgSQOfi,rllr,I7��c;.Ste.3f0 � San.I�i��;, C=f� 92121 a 8>R.792.CIDfiG �;?:�ra riz:tui�nt.n;»r Page 13/15 Appendix D: AntennaView� Dtech Communications offers a unique, online tool (AntennaView�) to train, idenrify and inform individuals of site-specific HotZones — areas that may potentially exceed the FCC's Safety Limits. AntennaView� is an online, interactive training tool that will educate nontechnical people in about ten minutes. It is a site-specific, RF safety rraining program that requires the end user to sign an online agreement thereby limiting the liability to the landlord and carriers. Some of the advantages include: • Virtual walk-through in 3-D with corresponding photographs • Site-specific, interactive, simple to understand • Delivers pertinent information i.e. HotZones (areas that may potendally exceed FCC safety limits), site owners and contact numbers. • User online agreement = accountability We invite you to take a quick tour at «-��-.A�renna�'ie«r.co�n and see how easy to understand and informative AntennaV ew� is. UnderArticle 47 CFB ,�" 1.1307(b), the FCC d�' OSHA v�randate.c r:rirele.c.c operatorc/facility o�vner.r to have an BF .rurve}� eonrp/ete� including a.rafety plan anrl training to e�zrure that tl�eir te�rant.r, en�loyee.r and contractorj n�ho urork in or arorrnd RF site.c are arvare of tl�e potential ri.cks pored Ir�� BF radiation. 11�fo.rt cell rites are located on buildi�sg rooftop.c ivhere HVAC corrtractora, rvindory �va.rhe�r, painterr, etc. routinely work andgenera�ly do not ktro�v rvhat antem7cu evetr look like. Dtech Comnninicaiio�u catr befj� untl� osrgoi�rg FCC/OSHA co�rrpliance and proadde�ractica! training that u eay ta under.ctand lry anyone regardles.r of tl�eir technica! back,ground. v "��i t7fiech !"crn�mdcarr;- �3�OOF�+Hr7 Pi;;sr, S';� 31)L) �.C�,� D�'t��, C�A'??121 A 3.5.?.792.C�!Ju� .b, +>�^t ar��:o+F,ce,;r Page 14/15 Appendix E: AT&T RF ad��isory signs �C�.��} • xrar �w sr,uo„as u s�, �;u. krao! rih ►c�i r„u sti w�iap �a acw �ern ra�,a kap+�;F}Aa�it r„r�'u�red � F:.4��trai Pau+a,"aa Etpesss tev,�. k:;Y�z uSSd i%+5ei ut bra:tne�,� � 16 FF �cs'x�aL f:c:atl.GtT L &'7G-iIA-.Y.'I ia9 �s �ae i�c �au'sari �iuc � �a�y � uai�is9�,ti� w ,es�s�� i �. •�.........,.�. a.r.u..... s , .. ..�..,.... . ...._...,..�..� Nouce #2 5ign %�g'7� : ��r�,�:��.�� e�SA.fa�►aidy�awe�*v�aaana:: � rldN nEw kn��ul �Ji ``'�e.`�.9 [3f Ia:A�t ': ; {'ie1 fw �3`s7G51 FF�@SYfi �l{Azt6. ? f4iihi SiiR'� �.1:�Y Y7liR`.$.m 7R �`6t ; ; �eat ; Lca:adAtil�t�3•638:8.'2Fadt�ntr,es : � �M1t71'�CtNN3 �tWf � �Ct1fYA�j 1P} E3ti'.!".aGCt'. .'� etc�gaut�Y�dCui�zt. i• . _ r tf��tlm�-V'.. �.-.....�7 Caution #2 Sign (8" x 12") Caution #2C Sign (5" x 7") Information Sign 1 (Discontinued) cc;�) AT&S aqaYtut antcanas at t�is ti7c. 6t�d Tkis loia! ta� ua 4rt:frrq an a�a ��era �tCi: �cvic�ercY%eX} fi�` i6 trirtd G�3� Fw vccc;,�ma,�al Ex�v�ce t�,i:a. Carir�lS32 rt A±�rG;r�a:1,:s.$u.s D uSl a�; rx.7ves! aua'�u:e ��s M �;ra;��,A it�� 4:itpu`.'�f F�a m t�ic�x suq �:E.1� tae e�� is � Ff c..s�:�rtta:�:x� B+scSa,x �y. : .. ya��_ --_.. . --- - -- Warning #2 Sign �c�,�) lJn t�is tc�er. �+t3ch�yr`tryt�� =sar.:r5r'ne�u .Ymjf ti:[fd t::e E�. S'rtCopd'.�a4'»! isy.:ri.Ylr.:�?S .:.{.��i3i�n'e'.�f t 4 t� �'v't'..^,Yi,l}.i.�.j luds�,st�eu:�a;n;cti�ss, �atppegar'a� rsya;.zwtct a tcga;,�t re�:nd [`asp:.YR;. �C(i�Ci r.'»l:t$A3a'� 1f4.l7s4i.E k�'t051i� �t 2taiGE1 fat u�tiung.ai �.ea.icc^rntirS>ir+J.a✓a F��.x�t Rl g:,�an�4tit�rrGtk.ng Y€� a:LNe��nfr�Lq+�, -� w.-.....,�.+, t�..eu<tw....�..�.� • ..._ _ _..:.,._.._..�_:.�_.,�_..._..._:w..u.... Caution Sign 2B Altemate for Towers a.,;H�a,ra��:��-� ^{c�;�M~. . '' 3•.'�&.'�5$.Y«� �r �:c:'. iF:"�Y.�'� ta'n4«i Information Sign 2 (Discontinued) � � D��ci� w"�``'''�'�"-��s -8.so ob<,,'ir, Dr�e, .t?e. �o0 6i J a; U;',_,,:, Gr� 9112/ �. �YSs.%1?.o(iaG � F_ ;:,:, Page 15/15 _........ _ _ _ __ . , ...__ .. . _ _ _._....._.. . ....,.._.._�„ _ _......._ _.._...__.