HomeMy WebLinkAboutCUP 2019-0001; LA COSTA RESERVOIR WCF; RADIO FREQUENCY ELECTROMAGNETIC FIELDS EXPOSURE REPORT; 2019-05-29,
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YOUR RF SAFETY PARTNER
RADIO FREQUENCY ELECTROMAGNETIC FIELDS EXPOSURE REPORT
Prepared for Verizon
c/o PlanCom, Inc.
Site Name:
Site Type:
La Costa
Mono-Eucalyptus
Located at:
3023 Alga Road
Carlsbad, CA 92009
Latitude: 33.1053 / Longitude: -117.2350
Report Date: 5/29/2019
Report By: Jamie Santos
Based on FCC Rules and Regulations, Verizon is compliant.
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TABLE OF CONTENTS
1.0 EXECU1~IVE SUMMARY ................................................................................................................................ 3
2.0 SIIB DESCRIPTION ........................................................................................................................................ 4
2.1 Site Map ............................................................................................................................................................. 4
2.2 Site Photographs -Existing Conditions ....................................................................................................... 5
2.3 A ntenna Inventory ........................................................................................................................................... 7
3.0 1\.NALYSIS ............................................................ : .............................................................................................. 8
3.1 SiteDiagram ...................................................................................................................................................... 8
3.2 Emission Measurements -Existing Conditions .......................................................................................... 9
3.3 Emission Predictions -Proposed Conditions .......................................................................................... 10
3.4 Five Percent Contributions .......................................................................................................................... 13
4.0 CONCLUSION ................................................................................................................................................ 14
4.1 Results ............................................................................................................................................................. 14
4.2 Recommendation(s) ...................................................................................................................................... 14
4.3 Statement of Compliance ............................................................................................................................. 14
4.4 Engineer Certification ................................................................................................................................... 14
Appendix A: Background ........................................................................................................................................... 15
Appendix B: Measurement and/or Computer Simulation Methods ................................................................... 16
Appendix C: Limitations ............................................................................................................................................ 16
Appenc:l.i,x D: Antenna View® .................................................................................................................................... 17
Appenc:l.i,x E: Verizon's RF Advisory Signs .............................................................................................................. 18
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1.0 EXECUTIVE SUMMARY
Dtech Communications, LLC ("Dtech") has been retained by PlanCom Inc., contractors to Verizon, to
determine whether its wireless communications facility complies with the Federal Communications
Commission ("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 1: EMF Summary
Verizon Summary
Access Type Gate
Access to antennas locked Yes
RF Sign(s)@ access point(s) Guidelines (Access Gate)
Caution (Base of Existing Pole)
RF Sii?tl(s) @ antennas None
Barrier(s) @ sectors NA
Max measured EMF level for existing 4.8% General Population Verizon on Ground
Max simulated EMF level for proposed 1.0% General Population Verizon on Ground
Max simulated EMF level for proposed 3.0% General Population
Verizon on Water Tank (0.6% Occupational)
Min Clearance Distance from Face of 40 Feet proposed Verizon's Antennas
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2.0 SITE DESCRIPTION
T he wireless telecommunication facility is located on the ground. The facility consists of 1 wireless
carrier(s) or operator(s): Verizon. The antennas are typically grouped into sectors pointing in different
directions to achieve the desired areas of coverage. Verizon's proposed antennas will be mounted on a new
mono-eucalyptus tower and connected to the equipment via coaxial cables.
2.1 Site Map
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2.2 Site Photographs -Existing Conditions
General site view of existing Verizon monopole Verizon Access Gate ·with Guidelines
-~~
Verizon Guidelines Sign Caution Sign Base of Pole
Verizon Sector A Verizon Sector B (left)
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Verizon Sector C with Dish (below)
Verizon Equipment
•
Verizon Panel and Dish Antennas
......
General Proposed Location of New
Verizon Mono-eucalyptus
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2.3 Antenna Inventory
Tech nical specifications in the table below are provided by our clients and/ 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 Technical Specifications (Proposed Conditions)
Total Input ottom p ottom lip eouomTip
Antenna Frequency Orientallon Hof1zontal Antenna Amenna Powe< Tolal ERP Height Abow HeighlAbow Height Ant
ID Operato, AmennaMt Anl:.-.na Model Type (MHz) rn BWdlh (") Ape,1'" (l) Gain (d8d) (Wallo) (Watt>) Ground (2) (l) T80k (2) (l) L<Ml(Z)(ft)_
Al Verizon Commscope NHH-65C-R2B Panel 880 135 62 8.0 13.7 92 2168 49.0 28.5 0.0
Al Verizon Commscope NHH-45C-R2B Panel 746 120 49 8.0 15.4 107 3733 49.0 28.5 0.0
A2 Verizon Commscope NHH-45C-R2B Panel 880 120 43 8.0 16.2 107 4467 49.0 28.5 0.0
A2 Verizon Commscope NHH-45C-R2B Panel 2120 120 42 8.0 17.8 142 8514 49.0 28.5 0.0
A2 Verizon Commscope NHH-45C-R28 Panel 2120 120 42 8.0 17.8 142 8514 49.0 28.5 o.o
A3 Verizon Commscope NHH-45C-R28 Panel 746 120 49 8.0 15.4 107 3733 49.0 28.5 0.0
A3 Verizon Commscope NHH-45C-R28 Panel 880 120 43 8.0 16.2 107 4467 49.0 28.5 0.0
A3 Verizon Commscope NHH-45C-R2B Panel 1965 120 39 8.0 17.4 283 15530 49.0 28.5 0.0
Bl Veri1on Commscope NHH-65C-R2B Panel 746 240 65 8.0 13.6 107 2449 49.0 28.5 0.0
81 Verizon Commscope NHH-65C-R2B Panel 880 240 62 8.0 13.7 107 2506 49.0 28.5 0.0
Bl Verizon Commscope NHH-65C-R28 Panel 2120 240 62 8.0 16.3 142 6028 49.0 28.5 0.0
Bl Verizon Commscope NHH-65C-R28 Panel 2120 240 62 8.0 16.3 142 6028 49.0 28.5 0.0
B2 Verizon Commscope NHH-65C-R2B Panel 746 240 65 8.0 13.6 107 2449 49.0 28.5 0.0
B2 Verizon Commscope NHH-65C-R2B Panel 880 240 62 8.0 13.7 107 2506 49.0 28.5 0.0
82 Verizon Commscope NHH·65C-R28 Panel 1965 240 66 8.0 15.7 283 10572 49.0 28.5 0.0
83 Verizon Commscope NHH·65C-R2B Panel 880 220 62 8.0 13.7 92 2168 49.0 28.5 0.0
Cl Verizon Commscope NHH-65C-R2B Panel 880 0 62 8.0 13.7 92 2143 49.0 28.5 0.0
C2 Verizon Commscope NHH-45C-R2B Panel 746 25 49 8.0 15.4 107 3733 49.0 28.5 0.0
C2 Verizon Commscope NHH-45C·R2B Panel 880 25 43 8.0 16.2 107 4467 49.0 28.5 0.0
C2 Verizon Commscope NHH-45C-R2B Panel 2120 25 42 8.0 17.8 142 8514 49.0 28.5 0.0
C2 Verizon Commscope NHH-45C-R28 Panel 2120 25 42 8.0 17.8 142 8514 49.0 28.5 0.0
C3 Verizon Commscope NHH-45C-R28 Panel 746 25 49 8.0 15.4 107 3733 49.0 28.5 0.0
C3 Verizon Commscope NHH-45C-R28 Panel 880 25 43 8.0 16.2 107 4467 49.0 28.5 o.o
C3 Verizon Commscope NHH-45C-R28 Panel 1965 25 39 8.0 17.4 283 15530 49.0 28.5 0.0
DI Verizon Unknown Unknown Dish 10000 298 2 4.0 38.0 65 44.0 23.5 NA
D2 Verizon Unknown Unknown Dish 10000 340 2 4.0 38.0 65 44.0 23.5 NA
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-
3.0 ANALYSIS
3.1 Site Diagram
Figure 1: Site Diagram -Plan (bird's rye) view map of signs/ barriers current!y existing on site.
Site Diagram
W....Tri
a I \ ---/ <"' ...... / ~ _____,__-(N)~erlzon ' ) Monoeuc■lypt._ C I (12~Panel J (2►D18h ·-, I ' .... _ -
I
f I 1 ~ a ~·~ A
I I
I
-·-~·+---,
Q
Gnd Size• 11 ft
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3.2 Emission Measurements -Existing Conditions
Field measurements were conducted at the subj ect site on 5/21/2019 11 :30 AM by J ames McDaniel, Dtech
personnel. Weather conditio ns can be best described as cloudy, windy. The spatial averaged values were
recorded.
J-,zgure 2: Plan (bird's '!JC) vie1P map of results compared to FCC's General Population MPE (M.aximum Permissible
Exposure) Limits. A result higher than 100% exceeds the FCC's General Population MPE Limits.
•
Measurement Diagram
<1%
WlhrTri
<1%
C1%
<5%
<5% C <1%
2.4%
B \.~/,~..-1/ ~ --I
t
Ground Level
N 'fl Elevation:O'
Grid Size • 11 ft
f
<1%
4
·-
<1~
I I
All other
Meauran.nts
W919<1%
:::--+
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3.3 Emission Predictions -Proposed Conditions
Fig11re 3: Pla11 (bird's rye) view map of res11/ts compared to FCC's General Pop11lation MPE (Maximum Permissible
Exposure) Limits. Grqy represmts areas where exposure levels are calculated to be at or below 5%; Green-bet1veen 5% &
100% (belo1v MPE limits); blt1e,ye/low & red-greater than 100% (exceeds MPE limits). Individuals can saje!J occupy
areas in grqy and green for indefinite amount of time; whereas areas in b/ue,yc!low & red must be restnded to RF trained
personnel who has heen made ful!J aware of potential for exposure, has control and knows how to red11ce their exposure with the
11se of personal protection eq11ipmmt or has the abiliry to po1ver down the transmitters.
% of FCC General Public Exposure Limit
D xss j ■ 5<Xs 100 j ■ 100<Xs500 j D 500<Xss,ooo j ■ X>5,ooo
,
1 ·1
Ground Level
NI' Elevation:O'
Grid Size• 1811
Simulation Diagram
Max Sim Levels
Verizon: 1.0%
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Fig11re 4: Plan (bird's rye) view map q/res11lts compared to FCC's General Pop11lation MPE (Maximum Permissible
E:>..posure) Limits. Grqy represents areas where e:xposure levels are calculated to be at or befo1v 5%; Green-betJVeen 5% &
100% (below MPE limits); bf11e,yello1v & red-greater than 100% (exceeds MPE limits). Individ11als can sqfe/y occupy
areas in grqy and green for indefinite amount of time; 1vhereas areas in blue, yellow & red m11sl be restricted to RF trained
personnel 1vho has been made jitl/y aJVare of potential for e:xposure, has control and kno1vs how lo reduce their exposure 1vith the
use of personal protection equipment or has the abifi!J to power down the transmitters.
•
% of FCC General Public Exposure Limit
D xss I ■ 5 <Xs 100 I ■ 100<X s500 ID 500<Xs5,000 I ■ X>5,000
Water Tank
N • Elevation:20.5'
Grid Biz•• 11 rt
Simulation Diagram
/ t ----
Max Sim Levels
Verizon: 3.0%
WalerTn
,-
I
I
4
t
C
:
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Figure 5: Plan (bird's rye) view map of results compared to FCC's General Pop11lation MPE (Maximum Permissible
Expos11re) Limits. Grqy represents areas ,vhere e:x.pos11re levels are calCJJlated to be at or be!o1v 5%; Green-behveen 5% &
100% (belo1v MPE limits); b!11e,yellow & red-greater than 100% (exceedr MPE limits). Individ11als can safe!J omtpy
areas in grqy and green for indefinite amount ef time; 1vhereas areas in blue,ye!/0111 & red must be restricted to RF trained
perso1111e/ 1vho has been made jit!!J aware of potential for e>,.pos11re, has control and knows ho,v to rcd11ce their e,vpos11re 1vith the
use of personal protection equipment or has the abili!J to power down the transmitters.
% of FCC General Public Exposure Limit
□ X s 5 I ■ 5 < X s 100 I ■ 100 < X s 500 I □ 500 < X s 5,000 I ■ X > 5,000
•
Antenna Level
N rl Elevation:49'
Grid Size• 11 ll
Simulation Diagram
WllllrT•
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3.4 Five Percent Contributions
Mitigation measures are a shared responsibility for carriers whose RF emission levels exceed five percent of
the FCC's exposure limits in areas of non-compliance.
Fig11re 6: Plan (bird's rye) view map ef results compared to FCC's General Pop11!ation MPE (M.aximum Permissible
E::,..posure) Limits. Grqy represents areas where e::,..posure levels are ca!c11!ated to be al or be/01v 5%; Green -greater than 5%.
•
Antenna Level
N • Elevation:49' ·
Grid Size• 11 ft
% of FCC General Population Exposure Limit
Dx:Ss I ■x>s
Simulation Diagram
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4.0 CONCLUSION
4.1 Results
For a person standing in accessible areas on the ground and water tank, predicted calculations and existing
measurements for Verizon's site resulted in exposure levels below the FCC's most stringent General
Population MPE Limits (see figure 2 -4).
At antenna elevation, the highest calculated exposure level is above the FCC's General Population 1'IPE
Limits near the Verizon antennas (see figure 5). The overexposed (yellow and blue) areas extend 40-feet
from the front face of the Verizon antennas. From the provided drawings, there are no other buildings or
surrounding structures at antenna elevation within 40-feet of the Verizon antennas. Beyond 40-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 Verizon employees and contractors are aware of the transmitting antennas and will take appropriate
precautions when working near them.
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 V erizon'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 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 knowledge.
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Appendix A: Background
Dtech uses the FCC's guidelines described in detail in Office of Engineering & Technology, Bulletin No. 65
("OET-65") "Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency
Electromagnetic Fields". The table below summarizes the current Maximum Permissible Exposure
("MPE") safety limits classified into two groups: General population and Occupational.
Frequency
(1'1hz)
30 -300
300 -1500
1500 -
100,000
Table 3: FCC MPE Llmits (from OET-65)
General Population/
Uncontrolled MPE
(m\V/cm2)
0.2
Frequency (Mhz)/1500
(0.2 -1.0)
1.0 I
Averaging
Time
(minutet-)
30
30
30 I
Occupational/
Controlled MPE
(m\,./cm2)
1.0 I
Frequency (Mh~)/300 I
(1.0-5.0
5.0 I
Averaging
Time
(minutes)
6
6
6
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 acmsible 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.
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Appendix B: Measurement and/ or Computer Simulation Methods
Spatial averaging measurement technique is used. An area between 2 and 6 feet, approximately the size of
an average human, is scanned in single passes from top to bottom in multiple planes. \'v'hen possible,
measurements were made at very close proximity 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 power density prediction computer Model1 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 maximum 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. J\. 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 o( 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.
1 Dtech uses Roofmaster(tm) 2015 Version 15.7.2.18 per Verizon's direction.
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Appendix D: Antenna View®
Dtech Communications offers a unique, online tool (Antenna View®) to train, identify and inform
individuals of site-specific HotZones -areas that may potentially exceed the FCC's Safety Limits.
Antenna View® is an online, interactive training tool that will educate nontechnical people in about ten
minutes. It is a site-specific, RF safety training 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 potentially exceed FCC safety limits), site
owners and contact numbers.
• User online agreement= accountability
We invite you to take a quick tour at www.AntennaView.com and see how easy to understand and
informative Antenna View® is.
Under Article 4 7 CFR § 1.130 7 (b ), the FCC & OSHA mandates wireless operators/ fac-iliry owners lo have an RF SHroey
completed including a sefery plan a-r,Jd training to ens11re that their tenants, employees and contractors JJJho 1JJork in or around
RF sites are aware of the potential risks posed by RF radiation. Most cell sites are located on building rooftops where HV AC
contractors, 111indow washers, painters, et,: routine/y work and generaljy do not know what antennas even look like. Dtei:h
Communications can help 111ith ongoing FCC/ OSHA compliance and provide practical training that is easy to understand by
at!Jone regardless of their technical background
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Appendix E: Verizon's RF Advisory Signs
•
& NOTICE &
OEHEIIAI.IIADIO-QlllNC'f (RFI I.VETYOUIIIC!...-=-====----......................
.Ar,Olilly-.. ,.... ....
£,-.-• .,.,... ... .._....._ . .,. ......... ....,, ....
• 0. .................... ....-. A o.,__..,......,~......_
• 00 ................ ~ ..................... ......_...,.. ---·~-=-~....,,, .........
GUIDELINES Sign
NOTICE
(C'f>) --· ,._.........,,......,_.thlll ,olllltMAY PCl!"m1t11,cco.-111~•.,..._. -0.., .. ,..... ... MII ... .,......
c.lv.rtr-WfrwMatlt~"K>fl
....... ~ .... ,-.it.
ITAlL_ 1wm;:H: -----
:'c!-,.., I
\..<' •
NOTICE Sign
eTATl;._ IWlTCH; ____ _
::,:..,._, I
----~ •
WARNING Sign
INFORMATION
This Is an ACCESS POINT to an
area with transmitting antennas.
0.,11,...... .... ~..,._. .... ....,..,
c.l"""'-WlnllN .. 1 ..... 2t,l,4Ut ....... ~
STATI:: __ SWITCH: ____ _
Sit.ID: __________ _
---~ --•
NOC INFORMATION Sign
~ CAUTION
T,.,....,_ AMtMI(•·
~ ...,..,.,.__,, ..... ~ .... ,...,. ..,_y
U:CllDIM'CC~•~IMk.
0.,el,...., ..... IMI.,...,....._.•.
Cll,e"'-rw•~-1~...UO.. .. _._....._,..... .. ,.....
ITA11: _ l'MTCH!
IITIID: .. """""°""'
¼: II
CAUTION Sign
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