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DIR-2022-011 - EMF Report SF15002A EME Com n' te1(p ee t Department P130r rjpgsRi�r jrDn5Cupertino curertrJNa npoRnIiGn YOUR RF SAFETY PARTNER Case# D I R-2022-011 RAM" W' ft_NCY ELECTROMAGNETIC FIELDS EXPOSURE REPORT Approval Body: Director/Staff Approva I Date 07/13/22 PRE-Activation Signature Jeffrey Tsumura Prepared for T-Mobile Case Manager Site Name: PG&E Monta Vista Sub Site ID: SF15002A Site Type: Powerline Tower Located at: 10110 California Oak Way Cupertino, CA 95014 Latitude: 37.32507003 / Longitude: -122.076807 Report Date: 1/27/2022 Report By: Christopher Stollar, P.E. Based on FCC Rules and Regulations, T-Mobile will be compliant provided recommendation(s) are implemented. Page 1/14 (T6r]M W� -rnn�irk pp hcctuuD�e rp��a rt m e nt 1.0 PEXETI�ViMMA�Y..ino................................................. 3 CUPERTIN02.0 SITE DIAMW1 *..........................................................................................................................................4 Case # 2.1 SiteWPp,2M-0.1.1............................................................................................................................................4 2.2 Anvoinaiinvamwq).............................................................................................................................................5 3.0 ANALYSIS..............................................................................................................................................................6 Aproval4dyEqiigsfl'Plreffons.........................................................................................................................................6 Aproval(Date-OAII*WN.....................................................................................................................................................9 Sinature4.1 i 'fsumura.......................................................................................................................................................9 ecos)...........................................................................................................................................9 4.3 Statement of Compliance................................................................................................................................11 4.4 Engineer Certification......................................................................................................................................11 AppendixA: Background..............................................................................................................................................12 Appendix B: Measurement and/or Computer Simulation Methods.....................................................................13 AppendixC: Limitations ...............................................................................................................................................13 Appendix D: Sample T-Mobile RF Advisory Signs..................................................................................................14 • Dtech communcaions 5850 Oberlin Drive,Ste.300 ♦ San Diego,CA 92121 ♦ 858.792.0066♦ www.dtechcom.com Page 2/14 MrVMM4V&W-"9AdMpartment PI nnin Division— ��i q Dtech �omm�mcations,LL� tech� has been retained by Smartlink,LLC, contractors to T-Mobile, to car aT'Nodetermine whetA_PrPRq Pss communications facility complies with the Federal Communications Ca se# CommissiodL i'REXO?R4%1 Frequency ("RF") Safety Guidelines. This report contains a computer- simulated aApr y6ti iccafNrAlrixb rcFkctromagnetic Fields ("EMF' exposure resulting from the facility. The analysis also includes assessment of existing wireless carriers on site,where information is provided. The table A provjj�f� ,P ff#5 ttA46s at a glance: A proval Date 07/13/22 Si nature Jeffrey Tsumura Table /:EMFSummarg T-M o. Access Tye Climbing Pegs Access to antennas locked NA RF Sign(s) @ access point(s) NOC, Guidelines &Warning (Recommended) RF Sign(s) @ antennas None Barrier(s) @ sectors NA Max EMF level for 2.4% General Population T-Mobile on Ground Max EMF level for 0.4% General Population T-Mobile on Adjacent Building Roof Min Clearance Distance from Face of 98 Feet T-Mobile's Antennas • Dtech communcaions 5850 Oberlin Drive,Ste.300 ♦ San Diego,CA 92121 ♦ 858.792.0066♦ www.dtechcom.com Page 3/14 �c�rr� ri ►# I � t Department The P�aPnsn�Dommunicationetac�ilnity is located on the ground. The facility consists of 1 wireless CUP RTINQcarrier(s) or opARR�q- `IEPIobile.The antennas are typically grouped into sectors pointing in different C se# directions to[3 URie3r@212eQdSlred areas of coverage. T-Mobile's antennas are mounted on a powerline tower and connecc&90itaiohvwTaP-6i lnent via coaxial cables. A provaI B2dy$j?jrM r/ Staff A prova I Date 07/1�/22 Signature , 'F� A- �• Q + r►. r �� f� • � b`k - - v Dtech communcaions 5850 Oberlin Drive,Ste.300 ♦ San Diego,CA 92121 ♦ 858.792.0066♦ www.dtechcom.com Page 4/14 Attf Department n on- URFcnl0 The tPo �e e� re sectstto n , specifications provided by our clients and/or gathered from physical cUr ItTIN°field surveys wINeP* Ple. This final configuration',including power settings and antenna orientations C se# must be maid 2)ki%in compliance with FCC guidelines. For co-locators or nearby transmitters, cons ervativepp9 owimgr*er(a)sed for purposes of a cumulative study where information is not provided or available. A proval Body: Director/ Staff Approval Date 07/13/22 . Site Technical Specifications Signature Bottom Tip Bottom Tip Bottom Tip Antenna cd5 Manager Frequency Orientation Horizontal Antenna Antenna Total ERP Height Above Height Above Height Antenna ID Operator Antenna Mfg Antenna Model Type (MHz) Technology (°T) BWdth(°) Aperture(ft) Gain(dBd) (Watts) Ground(Z)(ft) Adj.Roof(Z)(ft) Level(Z)(ft) Al T-Mobile Ericsson AIR6449 Panel 2500 NR 340 13 _2.8 22.4 34367 58.6 43.6 0.0 Al T-Mobile Ericsson AIR6449 Panel 2500 LTE 340 13 2.8 22.4 20620 1 58.6 1 43.6 0.0 A2 T-Mobile RFS APXVAALL1843-U-NA20 Panel 600 LTE 340 66 6.0 11.7 3148 1 48.0 1 33.0 0.0 A2 T-Mobile RFS APXVAALL1843-U-NA20 Panel 700 LTE 340 62 6.0 12.3 2416 1 48.0 33.0 0.0 A2 T-Mobile RFS APXVAALL1843-U-NA20 Panel 1900 GSM/LTE 340 62 6.0 15.1 9061 48.0 33.0 0.0 A2 T-Mobile RFS APXVAALL1843-U-NA20 Panel 2100 LTE 340 55 6.0 15.5 7677 48.0 33.0 0.0 B1 T-Mobile Ericsson AIR6449 Panel 2500 NR 90 13 2.8 22.4 34367 58.6 43.6 0.0 B1 T-Mobile Ericsson AIR6449 Panel 2500 LTE 90 13 2.8 22.4 20620 58.6 43.6 0.0 62 T-Mobile RFS APXVAALL1843-U-NA20 Panel 600 LTE 90 66 6.0 11.7 3148 48.0 33.0 0.0 B2 T-Mobile RFS APXVAALL1843-U-NA20 Panel 700 LTE 90 62 6.0 12.3 2416 48.0 33.0 0.0_ B2 T-Mobile RFS APXVAALL1843-U-NA20 Panel 1900 GSM/LTE 90 62 6.0 15.1 9061 48.0 33.0 0.0 B2 T-Mobil FS APXVAALL1843-U-NA20 Panel 2100 LTE 90 55 6.0 15.5 7677 48.0 33.0 0.0_ Cl T-Mobile Ericsson AIR6449 Panel 2500 NR 180 13 2.8 22.4 34367 58.6 43.6 0.0_ C1 T-Mobile Ericsson AIR6449 Panel 2500 LTE 180 13 2.8 1 22.4 20620 58.6 43.6 0.0 C2 T-Mobile RFS -� XVA APALL1843-U-NA20 Panel 600 LTE 180 66 6.0 11.7 3148 48.0 33.0 0.0_ C2 T-Mobile RFS APXVAALL1843-U-NA20 Panel 700 LTE 180 62 6.0 12.3 2416 48.0 33.0 0.0_ C2 T-Mobile RFS APXVAALL1843-U-NA20 Panel 1900 GSM/LTE 180 62 6.0 15.1 9061 48.0 33.0 0.0 C2 T-Mobile RFS APXVAALL1843-U-NA20 Panel 2100 LTE 180 55 6.0 15.5 7677 48.0 33.0 0.0 1 Per T-Mobile direction,the AIR6449 ERP's were calculated with an input power of 20OW for NR and 120W for LTE. • Dtech communcaions 5850 Oberlin Drive,Ste.300 ♦ San Diego,CA 92121 ♦ 858.792.0066♦ www.dtechcom.com Page 5/14 MnWO&Nsffevelopment Department 3Plapmisonrec�icnonpertino CUP RTINO APPROVED Ca 5e# Figure 1:Plan P n22w04A of results compared to FCC's General Population MPE (Maximum Permissible Exposure)Limits for a typical 6 0i ip gimc&t�i e represents areas where exposure levels are calculated to be at or below 5%;Green-between 5% d� 100% (below MPE limits);blue,yellow&red—greater than 100% (exceeds MPE limits). Individuals can safely occupy areas in white A proval BAae o tzi�otar.,h6Sta#time;whereas areas in blue,yellow&red must be restricted to BF trained personnel who has been made A prow pMe ofp��r{i�p�g'jf22exposure, has control and knows how to reduce their exposure with the use ofpersonalprotectzon equpment or as t e a iVy to power ilown 7he transmaters. Si nature Jeffrey Tsumura Case Manager %of FCC General Public Exposure Limit � X:55 I ■ 5<X:5100 N 100<X5500 500<X55,000 ■ X>5,000 Simulation Diagram 4 ML L Groun to a i i4 a Wi d " 3 B Aj Climbing L Pegs L }iSV�}TL' L 1 evi 1) XA .Adj.Bldg. (Roof G ound Ground Level MaxSim Levels •T-Mobile 6 N IF Elevatioriff T-Mobile:2,41% Grid Size=10It • Dtech comm°ncaions 5850 Oberlin Drive,Ste.300 ♦ San Diego,CA 92121 ♦ 858.792.0066♦ www.dtechcom.com Page 6/14 C � {' / 1�� f�pp �rto FCC's General Population MPE (Maximum Permissible Exposure)Limits for a ty cal 6 oot t l erspn. bVhtt re resents areas where exposure levels are calculated to be at or below S%;Green-between 3% & 900%'( �vE �t`�,Qe,y �t} crc greater than l00% (exceeds MPE limits). Individuals can safely occupy areas in white CUr F BTINo andgreen for indefinAp ,0 Dve;whereas areas in blue,yellow&red must be restricted to BF train ed personnel who has been made C se# 4�1� ''�'1 fully aware ofp l o has control and knows how to reduce their exposure with the use ofpersonal protection egu pment or ��izrrh�ir rrirccirp" rt�ia*ir nr.+titter.�- Ap lication Number(s� A prova I Body: Directo taff %of FCC General Public Exposure Limit A prova I Date 07/13/2221 5 5 I ■ 5<X<_100 . 100<X 5 500 500<X 5 5,000 I ■ X b,5,000 Si unature J re Tsumura Simulation Diagram Case Manager ■■■F5 ' �■a` 1 Groun 4Gro 6 41 1 1 A "a l 7 Wf ` 3 � B ti Climbing Pegs � (Ro f Lev q GrDund Adj.Bldg. Roof Max Sim Levels •T-Mobile 161 N IF Elevation:15' T-Mobile:0.4% Grid Size=10 ft (On Adj.Bldg.Roof) • Dtech communcaions 3830 Oberlin Drive,Ste.300 ♦ San Diego,CA 92121 ♦ 838.792.0066♦ www.dtechcom.com Page 7/14 C � { i/ VE�� pp �rto FCC's General Population MPE (Maximum Permissible Exposure)Limits for a ty cal 6 oot t l erspn. bVhtt re resents areas where exposure levels are calculated to be at or below S%;Green-between 3% & 900%'( �vE �t`�,Qe,y �t} crc greater than l00% (exceeds MPE limits). Individuals can safely occupy areas in white CUP F BTINo andgreen for indefitAP .O Dve;whereas areas in blue,yellow&red must be restricted to BF train ed personnel who has been made C se# 4�1� ''�'1 fully aware ofp l o has control and knows how to reduce their exposure with the use ofpersonal protection egu pment or �5zr�h5r arnccirp' rt� r».itter.�- Ap lication Number(s� A prova I Body: Directo taff %of FCC General Public Exposure Limit A prova I Date 07/13/2221 I ■ 5<X<_100 ■ 100<X5500 500<X55,000 IN X b,5,000 Si unature J re Tsumura Simulation Diagram Case Mana 8er MEN ■■■■■■■■■■■■■ ■■ ■MEMO ■■■E■■ ■ ■■ MEN NONE■■ ■■E■ No N■■■■■ ■ENE■ NEE■■■■■■■■■ ■■■■■ IMMMMMMMM A ■ ■■■■■W A ■■■■■■L : ■■NONE r3 B 1000■■ ■ EL -- peg,ifi■■■■■1. _■� ■■■■■■■■ Adj.Bldg. EF (^, MEN■■■NEE ` A(Roof Le"el) ■L 4EEEEEEEEE NOON ■■■■■■■■■■ d■■■■ ■■■■■■■■■■■ I■■■■ ■■■■■■■■■■ E■■■■ ■■■■■■■■■■■ . �IIIIIIIIIL��.-.�� ■■_ / Antenna Level Max Sim Levels •T-Mobile 6 N Elevation:48' T-Mobile:8612.0% Grid Size=10It • Dtech comm°ncaions 3830 Oberlin Drive,Ste.300 ♦ San Diego,CA 92121 ♦ 838.792.0066♦ www.dtechcom.com Page 8/14 M MNR' J�WNpment Department Pla nin, Division — Cupertino 4.1 Resu�ts CUPERTINO APPROVED Case# For a persorDQ6Z0g2-r0dAssible areas on the ground and adjacent building roof, calculations for T-Mobile's 4oc-aift1mod 6wexposure levels below the FCC's most stringent General Population MPE Limits (see figure 1 - 2). Approval Body: Director/Staff A provddd latdina 974 W the highest calculated exposure level is above the FCC's General Population MPE Si gnat4 ts %*4eTTu-�b�ile antenna(s) (see figure 3). The overexposed (red,yellow and blue) areas extend 98- eet trom t igg of the T—oGTe—antenna(s). From the provided drawings,there are no other buildings or surrounding structures at antenna elevation within 98-feet of the T-Mobile antenna(s). Beyond 98-feet, exposure levels are predicted to be below the FCC's most stringent General Population MPE Limits. The antennas are mounted on a tall tower and therefore not accessible by the general public. It is presumed that T-Mobile employees and contractors are aware of the transmitting antennas and will take appropriate precautions when working near them. However, there may be situations where workers i.e. power-line workers, etc. may find themselves directly in front of the antennas. Individuals working near/in front of antenna(s) 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. Alternatively, if the need occurs for any maintenance personnel to work directly in front of the antennas,T-Mobile should be contacted to arrange for the power to be shut down during the work period. 4.2 Recommendation(s) The following compliance action(s) would be sufficient to meet the FCC's RF Safety Guidelines (see figure 4): 1) Install RF advisory signs according to the Recommendation diagram. • Dtech communcaions 5850 Oberlin Drive,Ste.300 ♦ San Diego,CA 92121 ♦ 858.792.0066♦ www.dtechcom.com Page 9/14 t6mMuKftNr0,evWopMent Department Planning Division — Cupertino CUPERTIINQ APPROVED Recommendation Diagram Case # -20 - pplication Numb r(s) i *4 A prova I Body. D rector Staff `+ A prova I Date 7/13/2 Si wature leffrDv TsUML ra Groin k L as ellii Ianag r , 5 t i �py 4 hA AL 1 L I L 0 B ., Climbing � r ■r Pegs N.a&S:NO` 1 Adj.Bldg. (Roof Level) ound 101 T-Mobile 6 Grid Size=10 ft • Dtech communcations 5850 Oberlin Drive,Ste.300 ♦ San Diego,CA92121 ♦ 858.792.0066♦ num.dtechcom.com Page 10/14 Co Mrp•�l u%i�VDw61(6 i t1 wpa rtment Based onn hle bDo el results anRysisiand recommendation(s),it is the undersigned's professional opinion CUr RT1Nothat T-Mobile'sWNYWompliant with the FCC's RF Safety Guidelines provided recommendation(s) are C se# implemente(DIR-2022-011 Application Number(s) A proval B�.qy.j�a' ii pre*cation Approval Date 7/13/22 Si matAbis reDo tr&Th%grPrepared by or under the direction of the following Registered Professional Engineer: Darang'I ech, hoKUMgnto nr is registration number 16000. I have reviewed this report and believe it to be both true and accurate to the best of my knowledge. OFE551p CO w E16 0 T * EXR G L3 sr grFOr CAL�FAQ� • Dtech communcaions 5850 Oberlin Drive,Ste.300 ♦ San Diego,CA 92121 ♦ 858.792.0066♦ www.dtechcom.com Page 11/14 O& fuiffify-CJ?eWjI10 1e-(tt Department Planni pp� ion.—CCu e�mo Dtech uses t�i F(� �'s defin�s described in detail in Office of Engineering&Technology, Bulletin No. 65 CUP RTINO("OET-65") "E' �i�Wmpliance with FCC Guidelines for Human Exposure to Radiofrequency Ca se# ElectromagrDUR420221:044e table below summarizes the current Maximum Permissible Exposure ("MPE") sAirt�dils4itsuaihWified into two groups: General population and Occupational. A prova I Body: Director/ StafF A prova I Date 07/13/22 Table 3:FCC MPE Limier(from OET-65) SI nature I Jeffrey Tsum raML( se K anag- • . Time minutes • ' I 30- 300 0.2 30 1.0 6 300 - 1500 Frequency (Mhz)/1500 30 Frequency (Mhz)/300 6 (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 other appropriate means. It is important to understand that the FCC guidelines specify exposure limits not emission 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 MPE limits must, first of all, be in some way accessible 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 communcaions 5850 Oberlin Drive,Ste.300 ♦ San Diego,CA 92121 ♦ 858.792.0066♦ www.dtechcom.com Page 12/14 CVV#W"MVtt®t_#Agtr1F,@ftputer Simulation Methods Piannin Division—Cupertino Spatial average�measurement technique is used. An area between 2 and 6 feet, approximately the size of CVr RTINOan average hum PsRsQAPd in single passes from top to bottom in multiple planes. When possible, Case# measuremenglRe2D22clOAdvery close proximity to the antennas and inside the main beam where most of the energy i&,wDthcitiwdiur' c(s6patial averaged values were recorded. A prov?PNX;ARr ARE/tr ndard power density prediction computer Model'to assess the worse-case, A provaMMWive 9_7412Ract of the surrounding areas of the subject site. In addition, the analysis is performed Si natu4100% c-Y 1�dtransmitters are active at all times and transmitting at maximum power. For purposes of a cumulative ,rqk* y 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 specification estimates used for cumulative computer simulation 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 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 attorney's fees) arising from such unauthorized use. 2 Roofmaster(tm) • Dtech communcaions 5850 Oberlin Drive,Ste.300 ♦ San Diego,CA 92121 ♦ 858.792.0066♦ www.dtechcom.com Page 13/14 D� 1C �ret�� h�itisory Signs Planning Division — Cupertino CUPERTINO APPROVED Case # Appl cation I) i beWTICE /Iil,�\ p�Gl11DELINES FOR WORKING ONM IN 'N CASE OF Approval Body: Dire nr .P.y. dIn—.—tr.—ONMENTS 7u personne uld have eUENCYlectromagnetic eur—gy A proval Date 07 1=}ovrnanreh ringths sit.must beauthorized. EMERGENCY 0 A wall antennas are alive.Si nature Jeffrey}SLRTINbrgkin nantennas,notify Dwnersanddsable CALL LO pjr) f3feetclearancefromallanitemas -888_662 4662 rrPPii nt of antennas. •t/se personal RF monitors while working new anlerinas. site HIM !serer operate transmitters wthout shlatds during normal operation. Site Narnm !Do not oparater bass station antennas in equipment morns. NOC Sign GUIDELINES Sign • ACAUTION (• ��w)� . 1 Beyond this point: Radio point m ycy fields beyond Radio frequency fields at this site this point may exceed the FCC may exceed FCC rules for human general public exposure limit. exposure. Obey all posted signs and site guidelines For your safety,obey all posted signs and for working In radio frequency site guidelines for working in redlo aerironmenta. frequency ernironmanta. NOTICE Sign CAUTION Sign AWARNING Beyond this point: Radio frequency fields at this site exceed the FCC rules for human ¢xposura. Failure to obey all posted signs antl site guidelines for Working in radio fregeeecy environments could result in serious injury. WARNING Sign 3 The above signage is for reference only. Actual signs may be updated in accordance to T-Mobile RF policy. See cover page for site specific information. • Dtech cxnmuncatons 5850 Oberlin Drive,Ste.300 ♦ San Diego,CA 92121 ♦ 858.792.0066♦ www.dtechcom.com Page 14/14