HomeMy WebLinkAboutMiscellaneous - 122 FOSTER STREET 6/1/2017 DONALD L. HAES, JR., PH..D., CHP
IQ's-rcliolimi Srrfc�l3J sSjlec'irrli,�r
NIA Radiation Control Program I lealth Physics Services Provider Registration 465-0017
PC) Box 193, 1 himpstead,NH 03841 60.3-303-9959 Elmail: domild_haes„_i;hp(ritcomcast.net
.1 title 1. 2017
RE: Installation of a pt'oposed Varsity Wireless, LLC personal tvireless services facility to
Ile located at 122 Foster Street, North Andover, NIA.
I'URPOSr.
I have reviewed the information pertinent to the proposed insiallaticnt at the above location.
To determine regulatory compliance, theoretical calculations Of maximal radio-ii-equclicy (RI=)
Fields have been prepared. The physical conditions are that Varsity Wireless, I_,l_.0 proposes to
install a 130' loot monopole designed to resemble it tree (referred to as a "monopirte',, for
approximate location, see Figure 2). The host personal wireless services (P1VS) carriers are. New
Cill"L far Wircle°ss, PCS, LLC.: (reicrrcd to as"AT&T"),+incl Verizon Wireless. Both PWS service
providers propose to mount their prospective directional panel antennas oft the 111mlo'pine with four
antennas each in three "arrays" aimed 120” apart, The mounting centerline height of the antennas
is proposed to be 127' above ground level (.AGI,) Cor AT&T, and 117' AGI., for Verizon Wireless.
The monopine is to be designed to accommodate up to as many is three (3) additional l"W',
anEcttna rttaunting l0Catl0n5, spaced evenly at 10-foot separation distance down the monopine.
Phis report considers the contributions of the proposed AT&T and Vci-i'zt)11 Wireless, and
Future possible PWS transmitters, all operating at their typical FCC-licensed capacities. The
calculated values of RF fields are presented as a percentof ctn-rent i'/laxinnlm Permissible
f xposures (%MPf ) as adopted by the Federal Cortttttultications Commission (FCC),'-" and those
established by the Massachusetts Deltarttttent of public I leahli (MDPT I).`
SUMMARY
The measured RF !told levels indicate the maximum to he less than l,S`%, or the RF
exposure guidelines. These RF measurements are accurate, and meet both FCC and the MDP11
guidelines. Theoretical RF field calculations data indicate the summation of the proposed AT&T
and Verizolt Wireless PWS R1, contributions would be within the established RF expos re
guidelines, even when added to the existing ambient RF fields. This includes all publicly
accessible areas, and the neighborhood in general. The results support compliance with the
pertinent sections of the North Andover Zoning Bylaws (§ 8.9 Wireless Service Facilities).
Based on the results of the ambient RF field measurements, and the theoretical RF fields 1
have calculated, it is my expert opinion that this facility would comply with all rcgulatol•y
guidelines for RF exposure!vith the proposed AT&Tand Verizon Wircless PWS installations.
Nnre:The ariatyses,conchision+caul pralcssionrsl Opinions are Nised upon the precise-panunciers and condinons of this pamewho site; 122 roster
Sired,:North Andover,MA.Utilim6on of these analyses,ronelusicros and proicssional opinions fnr iutV perM?trot WiWICSS sersIccs instullatinn,
<xislinp or proposed,other Ihari the.al'oremendoned has not been sari ioncd b} the author,and iherctorc shouht not he ae.ceptcd is"idence of
regulatory compliance
Page 1
ExposURE UNurs AND (41H)FILINES
RF expswv guWehnes enWed b)-the FCC were emabHshal by the /uncrican StionM
Stand,li'dS lnSfl(L1tC QNSI) " and to Kdolml (Touncil on Radiation Protection and Measurement
(NCRPY" Ile RF expswe gWddhws am Wed Ar RF workers and members of the puNk. Ile
apo[cabh FCC RF eMmstme gAdelines, lor the public are listed inTable 1, and depicted in Figure
1. All listed Vakles are irmended U) be averaged over any contiguous 30-unintne period. NO'1'1,',:
The valUeS 1`6r"workers" is five thics the vakws for nwrnbem of Me puNk.
Table 1: Fdoxhuum PerndsWblc Exp stere (MIT) Values in flublic ,Areas
Requency Hands Ideork Nelds Magnetic Fields Equivalent Nwer Denshy
03-- 134 N4Hz 614 (Meer) 1 A3 (A nn) (100) lnwlQnvv
Wd - 30 hdHz S24qjV/nq 2.19�f(A n7) (10()) 111W/C1117
30 - 300 M1 1z 27.5 (VAn) OA73 (AArl) 12 nim"em?.
3DD - 1500 NH 1z 1500 ni W/crn�'
1500 - 101000 1.0 Inw/cm,
11gure 1: FVC" Li nhs IS Mduxhilum 11ci-miscible Exposul-c (AIPE)
NOIT: WC 51YO Rule -- At multiple transmitter sites, actions necessary to bring the arctl into
=p1lance \vRh the RF exposure guiddhws acre die shared responsibility of call licensees whose
transmitters produce RF new levels in excess or T% or to Hpoicable FCC POPUs.
Page 12
PERTI[NENTSF,crioNs cit*THE Nowni ANDOVER ZONINc, Byt,mvs
§ 8.9 Wireless Service Facilities
(6) (''o-location
C) III order to dcteril,lille Compliance with all applicable FCC Regulalions, cStilliates
of,RFR emissions will he required 1`6r all filcilities, including proposed <artcl I'Liture
I'acilities both for the apl'Aicant and all co-locators.
(8) Monitoringand IMaintenance
,I) Aller the llicility is in operatioll, the aIpplicaant shall submit to the ;SPGR .. aat
annual intervals from the (late OF issuance oftlic Special Perillit, preexistent a"d
current RFR measurements. Such measurements,shall be signed and certified b.y arra
RF engineer, starting; Illat RE"R menstirements are accurate and "Ire ill collipliance or
why tile measurements fail to comply Nvith all applicable I"("C', GI.IiddilleS as
specified ill Section 8.9(4)(c)(1) RFR Filing ReqUil-e1oCtItS Of' this HYJWA'. The
IllCaSLI IVI TIC IltS shall be submitted for hotly the applicant and all cc) loeators.
J,
Figure 2: Proposed Location (circic), of JI GK'S Compound; 122 Foster SUM, North Andover, NIA
0 2 0 15
(Picture couries.1, GooOe Earth", - andmaY 1101 represew curreni twndiflonv)
Page iii 3
THEORETWAL RF FIELD CALCULATIONS' - GROUND Lrwi�].s
1VIE1110DOLOGY
These Calculations are based oil what are cilled "worst-case" eslimates. That is, the
CS6111,11CS aSSUIlle 100%use of all transmitters simultaneously. Additionally, the calculations make
the aSSIIIIII)Ij011 that the SUrrouilding area is it flat plane. The NS111talit VallICS are thLIS C011SCI-VatiVC
in that they over predict actual resultant power densities.
The calculations are based on the 1,61lowing inrormation (See Table 2 data):
I. Effective Radiated Power(FIV).
2. Antenna height (1-OWEST centerline, above ground level (AGL)).
3. Antenna vertical radiation patterns: the S0LII-CC of the IlC11atiVC "aill W) VallIM
"Directional"antennas are designed to I'mm the RF signal, reSU10112 in "patterns"of'signal
loss and min. Antenna radiation patterns display file loss ol'signal strength relative to the
direction of propagation &C to elevation angle changes. The gain is expressed as "0
Vote:"Ci" is;I unifless factor usually expivsscd in decibels(dB);where G 11)
For example: liar an antenna gain of3 (113,the net Factor(G)- 10(�") 2
Foran antenna loss of-3 M.1he net factor(G) :- 11) 0.5
To determine the magnitude of'the RF field, the power density (S) fi-om in isotropic RI:
SOUrec is calculated, making use ol'the power density Cormula as outlined in FCC's OFT 131111Ctill
65, Edition 97-0l :
S =—P - G Where: P Power to antenna (watts)
4 - iT G Gain ol'atitenna
R Distance (range) 11-0111 alltell1la SOUITC to point
01'ilIt0rSCCti0I1 With the ground (6cct)
1Z2 = (I ICigjIt.)2 + (I lorizontal distance)'
Since: 11 - G = EIRP (Effective Isotropic Radiated 11mver) For broadcast antennas, the
equation can be presented in the l'ollowing Form:
S =—EIRP
4 - 7T - R'
III the SitUati0l) of'off-axis poNver density calculations, apply the negative elevation gain
((.; ") VaILIC from the vertical radiation patterns with the following formula:
S =-EIRP G
4 11'
Page 4
Ground reflections may add in-phase with the direct wave, and essentially double tits
electric field intensity. 13ccatlse power density is proportionili to the sgwire of the electric field,
the power density may quadruple, that is, increase by a factor oI*four (4), Since ERP is rolutitlt,Is,
used, it is necessary to convert l"RP into [ARP by multiplying by the factor of 1.64 (tile gai11 of a
half wave dipole relative to an isotropic radiator). Therefore, downrange power density estimates
can be calculated by using the iormuia:
S = 4 (ERP 1.64) •G_t' = ERP • 1-64 G t, = 0.522 ERP • G t`
4 rr RZ n Rz Rz
TO calculate the % MPI-71, arse the 1101.11111I,1:
'% MPE = S 100
MPE
The results ofthc calcUlatiatls for the potential RF emissions rcsultillg from the summation
of the proposed AT&T and Verizon Wireless PWS antennas are depicted in figure 3 as plotted
against finear distance from the base of tate monopine. I he reStllls for rule summation of rule
potential RP emissions resulting from the proposed A"f`�l Verizc n—Wirelcss, and the possible
tlu'ce ud(litiruurl l'1f,S Ljroyiders' (representing a "Tully loaded" lmonopine) RF emissions are
similarly depicted in Figure 4. Note that the values have been calculated for a height of b' AGL
in accordance with regulatory rationale. Also depicted ort the graphs are values Cora height of 161
AGE,(height of a typical 2""story). A logarithmic scale was used to plot tits calculated theoretical
'YoMPE values in order to compare with the MPF of 100%, which is so Watch larger that it would
be off the page in a linear plot. The curves are variable due to the application of the vertical
radiation patterns.
OBSF'RVATION,S IN CONSIDERATION WITIi FCC RULES §1.1307(13) & §1.1310
TBill it he plrvsicolly possible to stanel next to or !erre{ a1w onmWirectiomil (intennu mullor sitmel
h7_ -077t flea di7'eetiomil mitennu?
NO; access to the monopine will be restricted, and the site xvill adhere to Rf= sal'ety guidelines
regarding the PWS antennas, including appropriate signage.
Page 5
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i
ANTENNA INVENTORY
Table 2: Proposed and/or Possible Antenna Inventory
Ivionopine at 122 Foster Street, North Andover, MA
Antenna
Typical Typical Parameters:
Typical Use
Ceillerline.
Antenna `Hype ERI, & Tx Frequencies
(A G L)
Proposed by AT&T and Verizon Wireless
............ ......
3600 watts (q,) 1930-1945 Ml,lz PCS
AT&T Panel Antenna
127' Arrays"; Three Sectors
2424 watts (r, M Hz 860 - 890 \,113z GSM
" -
1800 waits (q), 700 N*lz LTE'
tip ro Four Panels Each
4 140 watts c7 2310-2140 MHz AWC
Verizon Wireless Panel 4175 watts (ii) 1970-1975 MHz PCS
Antenna "Ai-t-,,tys", 'I'IirCL 3120 Watts (ii) IMI lz 860 - 890 I'vi I lz CDMA
Sectors Of'Up To Four 938watts , 700N,11-lz LTF'
Panels Fach 2500 watts (i�,) 2150 MHz AWS
Possible Installations by Other PWS Carriers
107' 2750 watts (�Di rvil llz 1950 - 1965 MI lz KIS
Panel Antenna "Arrays"
97' Three Seetors 01'UpTo 1360 watts (4� 1945-1950, 1965-1970 MHz 11CS
Vour Paliels I'Aach
97' 2500 watts 2135-21410 till-lz A W C
Table Notes:
AWC: Advanced Wil'CICSS C011111ILMiCati011
AWS: Advanced Wireless Systems
CDIMA: Code Division Multiple Access("cellular voice")
GSM: Cicneral Service Mobile
LTE, I-011gTC1111 EVOILlti011 (aka 'AG")
1)(:S: Personal Communication System
Page 6
Rj,,,sui,,rs orrHEORETICA1, RF FIELD CALCULATION8
WAGL ........ME(Ihiblic) -,NIPE(NV(wktt)
---——-———-———————————- ———
OA114
LOOO 2000 1000 4000
Distance rrom Bim,Iffell
Figure 3: Theoretical Cumulative Maxillitlill Percent MT's", - vs. ,- Distance
(Summation of AT&T and Verizoll Wireless RF Contributions)
-IT AGL
rob�taaFr
fro.U ...........................
It
It
tt
0,01
0 1000 2000 1000 4000 5000
Dislanterrom Base[reed
Figure 4: Theoretical Cumulative rvlllxirlltllll Percent ml-"E - vs. — Distance
"Fully Loaded" Motiopine RF Contributions)
Page 7
RF FIELD MEASUREMENTS
1M EAS LIItE'NI.N't'PRO LOC'O1.,
t:;lceiromagnetic Held III Cast.tl'elnetits were obtained oil `'lay 2, 22015. using currently accepted
YI1, vSl i, 1X
scicntilic. procedures. The temperature ►vas 53)'F with mostly sullil>> skies. The measuring
equipment was within manuPaettn•er's recommended calibratioll intervals and included the 1i0110►yitlg:
Nardil model SRM-3000 Electromagnetic Radiation Mete r/SpectruFn Analyzer ►vith model
3AX 75M-3C Broadband Isotropic (SO —3000 MIiz) probe. The calibration duc date is 9/12/2016.
The SRA4-3000 was selected to provide a meter read-cut in units 0l'l7erceitt FCC 1997 Maxiilltim
Permissibie Flxposure for Inembers of the general pablie within the 1'requency band of the probe(s)
attached, The Rl' held measurements Ivere obtained during Il[ll'tllitl Ilse of the existing transmitters. The
recorder values rcpresent the "►worst Case" values. Care was exercised not to move the probe to within 20
clll of the. any Suri'ace to minimize probe•-proximity errors. The locations f`or the measurements included
publically accessible areas. Several locations weI•c chosen to record the data and represent the typical RF
fields present in the general vicinity; see map, Figure S. The measurements were obtained rising Iwo
methods:
(1)Potential RE Exposure based oil Spatial Average: The `'averaging" protocol can be used to
continuously scan an area from the ground plane up to a height of six feet above the ground,
referred to as the"Spatial Average.
(2) Potential RF Exposure base[] on Peak Fields: The built-ill "peak hold" feature was used
during the continuous scan. The highest observed readings at each location were recorded ill
tn11tS of YAlPF" fol' Illelllbel-S Olathe public, alld at C[)IltatilCd ill Table 3.
i
E
Ill addition, the SR11-31100 has a "Spectrum Analysis" mode, where the total RF Meld can be
cx.unined with a visual I•cpresentation of7the ,spectrum. The total spectrum was analyzed fir frequency
and amplitude (intensity). See results, Figure 6 Cora typical spectrum .50 - 300 MI I7. Norte absence oi'
peaks" in the PWS firequency bands; indicating the absence of 1'WS service. Less prominent "peaks„
below about 100 N4 lz are fi-om "free" broadcast.
Page 8
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RF Fu,.r.la i t;*,,vSl.jlxl!,wNII�.N'1' 1.,0(:')y'I'IONS"
1
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Figure S: Locations of RF Field Measurements;asurements; Vicinity of 122 Foster Street, N Andover, MA
(pietrare courtes;t" Bing At'rrtrs w id rrra rant represent ent current cr ndilions)
RF MELD Mi,,,,vsLJur'rtSm,, '°ritaJm ANA LYSIS
nnr'dn
a
AC�rI
f
77A41 VWG AtR� :�'� i9m^x wSAd
fawnw-�{ili4i1
Figure 6: Typical al Spectryum l) 3000 MIR in MPE (;cues rlublNc
Obtained at Location # 1, Txigur°r
Page
RF Fju,,u) MEAStJ[tF,,%:IFN-I' RESk..jl.,'I',S
Table 3: Results of Broadband RF Field Measurements
Vicinity of 122 Foster Street, North Andover, MA
Location H Highest Observed R.F Field Reading; 50 - 3000 MHz
See INIal), Figure 5 %MPE wllmi;.)I')
..............
#1 1.3138 (YO
fl2 1.2546 'Yo
113 1.2490 'Y4)
94 1.2867 'Yo
H5 1.2775 'Yo
H6 1-3200 'Vo
47 1.1725 '%,
119 1.1375 O/o
...........
09 1.1589 'Yo
it,1 1.1424 %
Table Notes:
Meter readings in "percellL FCC M for members of'the public.
l'agc10
TIIC nlcastWed RF field levels indicate the nlaxillulnl to be Tess than 1.5% of, the RF exposure
guidelines. These RF measurements are accurate, and meet both FCC and tile. MDp1I guidelines.
Theoretical RF field calculations data indicate the summation of the proposed AT&T and Verizon
Wireless PWS RF coil tri but ions would be within the established RF CXpOSUre gtlideltnes,even when lidded
to the existing ambient RF fields. This includes al] publicly accessible areas, and Ilhc neighborhood in
general. The results SuppOrt compliance with (lie,pertinent sections of the North Andover Toning Bylaws
(y 8.9 Wireless Service Facilities).
The 1111111bu and duration of culls passing tilrotlgll I'WS IaCllltiCS Ct111nOt. bC aCCUrately 1)rCdlCtcd.
Thtt,s, in order to estimate tits highest RF fields possible from operation of these; installations, the maximal �
amount of usage was considered. I ven ill this so-called "worst-ease", the resultant increase in RF field
levels arc illr below established levels considered safe.
Based cin the results of the ambient RF field meast.lrenlellk. and the theoretical RF fields I have
calculated, it is my expert opinion that this facility would comply with all regulatory guidelines felt, RF
exposure with the proposed AT&T and Verizon Wireless PWS installations.
Feel free to contact tile ii'yokl I1avC qtly questions.
Sincerely,
Donald L. F aes, Jr., 1.D
C'eat ied Health Physicist
Note: The analyses,conctusions and professional Opinions are based upon the precise parameters and conditions of this p:micutar site; 122 Poster Street,
;Borth Andover,NIA,1.11liiation of these njlatyscs,conclusions and professional opinions for any personal wireless services urstalhrtion,emming or proposod,
duffer th:ui the m'oremcntioncd has not been sanctioned by the author,and therefore should not he aecepwd as,evidence of regul,unr} eonrpli,3nce
Page l 1
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DONALD L. HAAS, JR., PH.D., CIIP
lZcrdicrlio�r Srrfely Sj�ccirrlist
MA Radiation Coiitrol Program Ilealth Physics Services Provider Registration 1(65-0017
PO BOX 198, 1lampstead. Nil 03841 603-303-9959 Email; donald Imes chp!�icomcnst.nct
STATE M ENT or CE RTI F WATII0N
I. I certify to the best ohn),), knowledge and belief, the statements of fact contained in this report are
U'uc and correct.
2. The reported analyses,opinions, and conclusions are limited only by (he reported aSSLlIlIpti0ll.q and
limiting Conditions, and are personal, unbiased proflessional analyses, opinions and conclusions,
i. 1 have no present or prospective interest ill (lie property (fiat is the subject of this report and I have
no personal interest or bias with respect to the parties involved.
4, vly compensation is not contingentupon the reporting of a predetermined energy level or direction
in energy level that fervors the cause of the client, the amount of energy level estimate, the
attainment o!`a stipt.tlatcd result, or the occurrence ofa subsequent event.
5. This assignment was not based on a requested minimt1111 envirotnmemal energy level or specilic
power density.
G. N,ly compensation is not contingent on all action or event resulting from (he analyses, opinions, or
conclusiol7s in, or the use of, this report.
7. The consultant has accepted this assessment assignment having the knowledge and experience
necessary to complete the assignment competently.
8. My analyses, opinions, and conclusions were developed and this report has been prepared, in
con1lormity with the Ames-icon Bow—d of Ileolth Physics (ABI 11") statements of standards of
professional responsibility for Certified Health Physicists.
])ate: Jun 11, 21117
IJonaOL , s, Jr., S.D
Cet-tifted Health Physicist
Page 12
ENDNOTES
Fedcral Re"inter, Federal Cf}n MUDieation5 COMIll1SSioll Rules: Radiofi-equency radiation
environmental effecls evaluation guidelines VOlcrrne 1, No. 153, 41006-41199. August 7, 1996. (47 CFR
Part 1: Fedcral ('onlltlunications Commission).
�.
Telecommunications Act of 1996, 47 l_15C, Second Session of�the 104"'Congress of the hiked States
of America. January 3. 1996.
105 C:;NIR 122.000: Massachusetts Department of Public Health, Afon-lonLing Radiatinir I,in is jot:'
The General Public .j•onr P, postwe to Eleclronragnetic Fields, 1.'ntplovees -om
Oceupatinucd E' posure to Electro magnetic Fields, and Exposure fi�om Hicrow-ave Ovens.
"'. ANSUI F ('95.1-1999: American National Standard, Scr/e{v levels with respecl it) human exposure
to radio. i•equency 3 KIIz t« 390 G31z (Updated in 2010).
National Council on Radiation Protection and Mcasuremcnts (NCRP); Biological P,./eels and llxposure
Criieria for Radiofi•eclueney I7ectr0ruc'1,�17eIic Fields, NCRI' Rcport 86, 1986.
OI T Bulletin 65: Federal Cor11111ulliCMiOrl4 C011311115SlOn C.)Ificc of I;M;ineel-irlg and Tec.hnology.
1'vultrclli�a,r C'onrplialrre with F'C'C: Guidelines.fbr Human Exposure to Radiofi•equeiacy Elecirn le tit,
Fields; l?