DNS BLD2022-0824+RADIO FREQ. EXPOSURE+6.23.2022_1.45.08_PM+2951025Pramira
Radio Frequency Exposure
RF Safety and NIER Analysis Report
06/09/2022
Site: ESPERANCE
Edmonds, WA
Prepared for: Verizon
Table of Contents
1 Certification................................................................................................................ 3
2 Executive Summary....................................................................................................
4
2.1 Conclusion and Recommendations......................................................................
5
3 Introduction.................................................................................................................
6
3.1 Site Description: ...................................................................................................
6
3.2 Site Configuration Being Modeled......................................................................
7
4 Predictive Analysis Details.........................................................................................
8
4.1 Analysis Locations: ..............................................................................................
8
4.2 Antenna Inventory................................................................................................
9
4.3 RF Emissions Diagram(s) - All Transmitters.....................................................
10
4.4 RF Emissions Diagram(s) - Verizon Transmitters Only ....................................
12
5 Signage/ Mitigation...................................................................................................
12
5.1 Signage/ Barrier Detail.......................................................................................
14
5.2 Signage/ Barrier Diagram...................................................................................
15
6 Conclusions and Recommendations.........................................................................
16
7 Appendix A: FCC Compliance and RF Safety Policies ...........................................
17
8 Appendix B: Overview of RoofMaster® Functions and Assumptions ....................
19
9 References.................................................................................................................22
10 Limited Warranty......................................................................................................
23
Page 2 of 23
I Certification
This report, prepared by Pramira, Inc. for Verizon, is intended to document compliance
and evaluate power density levels as outlined in the report. The computations, analysis,
and resulting report and conclusions were based on applicable FCC guidelines and
regulations for maximum permissible exposure to humans consistent with FCC OET
Bulletin 65, Edition 97-01.
Additionally, Pramira, Inc. certifies that the assumptions are valid and that the data used
within Pramira control are accurate, including information collected as part of Pramira
field surveys. Pramira, Inc. does not however certify the accuracy or correctness of any
data provided to Pramira, Inc. for this analysis and report by Verizon or other third
parties working on behalf of Verizon.
I certify that the attached RF exposure analysis and report is correct to the best of my
knowledge, and all calculations, assumptions and conclusions are based on generally
acceptable engineering practices:
Digitally signed by Tim Alexander, PE
Tim Alexander PE email=TimuspowerAlexand r@.u,o,ou,
/ email=proteuspower@outlookcom, c=US
Date: 2022.06.0914:27:23-07'00'
Tim Alexander, P.E.
Report Prepared by: Abdelsalam Masoud, 06/09/2022
Report Reviewed by: Mike Arnold, 06/09/2022
Page 3 of 23
2 Executive Summary
This report provides the results of an RF power density analysis performed for Verizon at
site ESPERANCE in accordance with the Federal Communications Commission (FCC)
rules and regulations for RF emissions described in OET Bulletin 65, Edition 97-01.
This report addresses RF safety for two classified groups defined by OET Bulletin 65:
Occupational/ Controlled and General Population/ Uncontrolled. Based on the analysis,
this site will be Compliant with FCC rules and regulations and Verizon's Signage and
Barrier Policy if the mitigation details provided in Table 1 are implemented.
Final Compliant
Configuration
. eona.
—
OCAUTION'
..
.711-
— =---
1 Y
Y
GUIDELINES
NOTICE
CAUTION
WARNING
NOC INFO
BARRIER/MARKER
Access Point(s)
® [1] *
❑ [ ]
❑ [ ]
❑ [ ]
[ ] °°
❑
Alpha
❑[]
❑[]
❑[l
❑[l
❑[]
❑
Beta
❑[]
❑[]
❑[]
❑[]
El [I
❑
Gamma
❑[]
❑[]
❑[]
❑[]
❑[]
1 ❑
NOTE: The table represents either the signage/barriers installed / removed OR items
required by the market (if mitigation is not installed by consultant/vendor).
* These RF signs should be posted at VZW Equipment. (See drawing in Section 5.2).
S ecialty Sign Detail
Location
N/A
Access Point
N/A
Alpha
N/A
Beta
N/A
Gamma
N/A
NOTE: The tables above represent EXISTING compliance items implemented at this location.
Notes/ Additional Compliance Requirements(s):
Mitigation is required per the Signage/ Barrier Diagram.
Table 1: Mitigation Requirements for Compliance
Page 4 of 23
2.1 Conclusion and Recommendations
• The results of the analysis indicate that the power density levels in the generally
accessible areas on the Water Tank Level will not exceed the FCC's MPE limit
for General Population limit.
• The results of the analysis indicate that the power density levels in the generally
accessible areas on the Pitched Roof 1 Level will not exceed the FCC's MPE
limit for General Population limit.
• The max theoretical % MPE is 39.78% directly in front of antennas at the Water
Tank Level.
Note: Modifications to the site; and/or increases in channel counts or power levels exceeding those listed
in this report will require additional evaluation to determine compliance.
Page 5 of 23
3 Introduction
The purpose of this analysis and report is to evaluate the cumulative power density levels
of all non -excluded antennas located on the site and identify any areas of concern that
require mitigation. This report also assesses the site's compliance with FCC OET
Bulletin 65; "Guidelines for Human Exposure to Radio -frequency Electromagnetic
Fields".
The power density simulation performed for this site utilized RoofMaster® analysis
software. All antennas were assigned an operating frequency and transmit power and
were deemed to be operating at 100% of their configured output power.
3.1 Site Description:
• Site Name:
ESPERANCE
• Street Address:
8505 Bowdoin Way
Edmonds, WA 98026
• Latitude:
470 48' 24.5" N
• Longitude:
1220 20' 55.3801" W
• Structure Type:
Monopole
• Structure Height:
f 123'AGL
• Co -Locators/ Other
Antennas: CD shows Co -locator antennas. Since no co -
locator data was provided, a general antenna configuration was used modeling the
Unknown carrier. However, until those details can be confirmed in the Post
analysis, Unknown was used as an identifier in the report. C/Ls were estimated
from the CDs.
• BTS Equipment Location: The Verizon equipment is located on the Ground.
Page 6 of 23
3.2 Site Configuration Being Modeled
• This is a Monopole application where Verizon antennas are mounted on the Pole.
• This is a Three -Sector site supporting C-Band at 3700 MHz, LTE at 700, 850,
1900 and 2100 MHz for all sectors. All LTE assumes MIMO.
• The LTE antenna's rad center (70') and C-Band (72.7') for all sectors, Water
Tank height (47'), Pitched Roof 1 height (21'), Pitched Roof 3 height (15'), and
Pitched Roof 4 height (18') are based on CDs, RFDS and Google Earth. These
values must be verified on the site audit for the post study.
• Pitched Roof 2 and Pitched Roof 5 have the same height as Pitched Roof 1.
• All technologies were evaluated assuming the maximum number of channels and
were running at maximum configured power 100% of the time.
Page 7 of 23
4 Predictive Analysis Details
For purposes of this analysis, RoofMaster® was configured to provide an output based on
the appropriate MPE limit(s) published in the FCC's guidelines. The antenna information
was loaded into RoofMaster®, an MPE predictive analysis tool by Waterford
Consultants, LLC.
4.1 Analysis Locations:
Number of Elevations Analyzed: 2
• Water Tank level.
• Pitched Roof 1 level.
A study at other levels was not required as the study at the Pitched Roof 1 level
shows that the MPE limit is below the General Population MPE limit on other levels.
Page 8 of 23
4.2 Antenna Inventory
The following table contains the technical data used to simulate the power density that
may be encountered with all antennas simultaneously operating at full rated power with
the exception of any excluded antennas cited in this document. If co -locator's antennas
exist and specific antenna details could not be secured, generic antennas, frequencies, and
transmit powers were used for modeling. The assumptions used are based on past
experience with communications carriers.
Name
L700
_ L850
L19O0
(MHz) Trans
Freq Power
700 40.0
850 40.0
1900 40.0
Trans
Count
2
2
4
Other
Loss
0.5
0.5
0.5
Calc
Power
71.3
71.3
142.6
.Tank
M Z (ft)
COMMSCOPE NHH-65C-R2B 23.0
COMMSCOPE NHH-65C-R28 23.0
COMMSCOPE NHH-65C-R2B 23.0
P.Roof 1
Z (ft)
49.0
49.0
49.0
Type
Panel
Panel
Panel
(ft)
Aper
8.0
8.0
8.0
d
Gain dth
13.2 65
13.53 62
15.17 66
s
330
330
VZ Alpha_Antl
VZ Alpha_Antl
VZ Alpha_Ant1
330
VZAlpha_Ant2
L7O0
700
40.0
2
0.5
71.3
COMMSCOPE NHH-65C-R2B
23.0
49.0
Panel
8.0
13.2
65
330
VZAlpha_Ant2
L95O
850
40.0
2
0.5
71.3
COMMSCOPE
NHH-65C-R2B
23.0
49.0
Panel
9.0
13.53
62
330
VZ Alpha_Ant2
L21O0
2100 60.0
2100 40.0
4
0.5
213.9
COMMSCOPE
NHH-65C-R2B
23.0
49.0
Panel
8.0
15.82
62
330
VZAlpha_Ant2
L2100_3
4
0.5
142.6
COMMSCOPE NHH-65C-R2B
23.0
49.0
Panel
8.0
15.82
62
330
VZAlpha_Ant3
C-Band
3700 5.0
64
0.0
320.0
ERICSSON _ Al R6449
25.7
51.7
Panel
2.8
23.55
11
330
VZ Beta Ant1
L7O0
700 40.0
2
0.5
71.3
COMMSCOPE NHH-65C-R2B
23.0
49.0
Panel
8.0
13.2
65
9D
VZ Beta_Antl
L95O
850 40.0
1900 40.0
700 40.0
2
0.5
71.3
COMMSCOPE NHH-65C-R213
23.0
49.0
49.0
Panel
Panel
9.0
8.0
13.53
15.17
62
66
90
90
VZ Beta_Antl
L19O0
4
0.5
142.6
COMMSCOPE NHH-6_SC-R2B 23.0
COMMSCOPE NHH-65C-R2B 23.0
COMMSCOPE NHH-6_SC-R2B 23.0
COMMSCOPE NHH-65C-R2B 23.0
VZ Beta_Ant2
L7O0
2
0.5
71.3
49.0
Panel
8.0
13.2
65
I 90
VZ Beta_Ant2
L85O
850 40.0
2
0.5
71.3
49.0
Panel
8.0
13.53
62
90
VZ Beta_Ant2
L21O0
2100 60.0
1 4
0.5
213.9
49.0
Panel
8.0
15.82
62
90
VZ Beta_Ant2
L2100_3
2100 40.0
4
0.5
142.E
COMMSCOPE NHH-65C-R2B
23.0
49.0
Panel
8.0
15.82
62
90
VZ Beta_Ant3
C-Band
3700 5.0
64
2
0.0
0.5
320.0
71.3
ERICSSON Al R6449
COMMSCOPE _NHH-65C-R2B
COMMSCOPE NHH-65C-R2B
25.7
51.7
Panel
2.8
23.55
11
90
210
210
210
VZ Gamma -Anti
L7O0
700 40.0
850 40.0
1900 40.0
23.0
49.0
Panel
8.0
13.2
65
VZ Gamma -Anti
L85O
2
0.5
71.3
23.0
49.0
Panel
8.0
13.53
62
VZ Gamma -Anti
L19O0
4
1 0.5
142.6
COMMSCOPE
NHH-65C-R2B
23.0
49.0
Panel
8.0
15.17
66
Gamma-Ant2
17O0
700 1 40.0
2
1 0.5
71.3
COMMSCOPE
NHH-65C-R2B
23.0
49.0
Panel
8.0
13.2
65
210
_VZ
VZ Gamma-Ant2
L85O
850 40.0
2
0.5
71.3
COMMSCOPE
NHH-65C-R2B
23.0
49.0
Panel
8.0
13.53
62
210
VZ Gamma-Ant2
L21O0
2100 60.0
4
0.5
213.9
COMMSCOPE
NHH-65C-R2B
23.0
49.0
Panel
8.0
15.82
62
210
VZ Gamma-Ant2
L2100 31
2100 40.0
4
0.5
142.6
COMMSCOPE
NHH-65C-R2B
23.0
49.0
Panel
8.0
15.92
62
210
VZ Gamma-Ant3
C-Band
3700 2.5
64
0.0
160.0
ERICSSON
Al R6449
25.7
51.7
Panel
l 2.8
23.55
11
210
Unknown-Ant1
L19O0
11900
1900 40.0
1900 40.0
4
0.5
142.6
Unknown
Unknown
35.0
61.0
6.0
15.17
66
330
Unknown-Ant2
4
0.5
142.6
Unknown
Unknown
35.0
61.0
_Panel
Panel 6.0
Panel 6.0
15.17
66
330
Unknown -Anti
Unknown-Ant4
Unknown -Ants
L1900
I L1900
L19O0
1900 40.0
1900 40.0
1900 40.0
410.5
142.6
Unknown
Unknown
35.0
61.0
15.17
66
330
4
0.5
142.6
Unknown
Unknown
35.0
61.0
Panel
l 6.0
15.17
66
330
4
0.5
142.6
Unknown
Unknown
35.0
61.0
PanelT
6.0
15.17
66
90
Unknown -Ant 6
L19O0
1900 40.0
4
0.5
142.6
Unknown
Unknown
35.0
61.0
Panel
6.0
15.17
66
90
Unknown -Ant 7
L19O0
_
1900 40.0
4
0.5
142.6
Unknown
Unknown
35.0
61.0
Panel
6.0
15.17
66
90
Unknown-Ant8
119O0
1900 40.0
I 4
0.5
142.6
Unknown
Unknown
35.0
61.0
Panel
6.0
15.17
66
90
Unknown-Ant9 _ L19O0
Unknown -Ant 101 L1900
Unknown-Antll. L1900
_Unknown -Ant 121 L1900
Unknown -Ant 131 L1900
Unknown -Ant 14I L1900
Unknown -Ant 15 L1900
Unknown -Ant 16 L1900
Unknown -Ant 17 L1900
Unknown -Ant 181 L1900
Unknown-Ant19 L1900
Unknown -Ant 20I L1900
Unknown -Ant 21 _� L1900
Unknown -Ant 22 L1900
Unknown -Ant 23: L1900
Unknown -Ant 24 L1900
Unknown -Ant 25 L1900
Unknown -Ant 26 L1900
Unknown -Ant 27L1900
Unknown -Ant 28 L1900
Unknown-Ant23 L1900
Unknown -Ant 3O L1900
Unknown -Ant 31 L19O0
1900 40.0
I 4
0.5
142.6
Unknown
Unknown _
Unknown
Unknown
35.0
61.0
Panel
6.0
15.17
66
210
1900 40.0
1900 40.0
1900 40.0 _,
1900 40.0
1900 40.0
1900 40.0
1900 40.0
1900 40.0
1900 40.0
1900 40.0
1900 40.0
1900 40.0
1900 40.05
1900 40.0A40.
1900 40.05
1900 40.05
1900 40.0
1900 40.0
1900 40.0
1900 40.0
1900 40.0
1900 40.0
4
0.5
142.6
Unknown
35.0
61.0
Panel
6.0
15.17
66
210
1 4
4
0.5
142.6
Unknown
35.0
61.0
Panel
6.0
15.17
66
210
210
1 0.5
142.6
Unknown
Unknown
35.0
61.0
Panel
6.0
15.17
66
4
0.5
142.6
Unknown
Unknown
45.0
71.0
Panel
6.0
15.17
66
330
4
0.5
1 142.6
Unknown
Unknown
45.0
71.0
Panel
6.0
15.17
66
330
4
0.5
1142.6
Unknown
Unknown
45.0
71.0
Panel
6.0
15.17
66
90
4
0.5
142.6
Unknown
Unknown
45.0
71.0
Panel
6.0
15.17
66
90
4
j 0.5
142.6
Unknown
Unknown
Unknown
45.0
71.0
Panel
6.0
15.17
66
210
4
F0.5
142.6
Unknown
45.0
71.0
Panel
6.0
15.17
66
210
4
9.5
142.6
_
Unknown
Unknown
63.0
89.0
Panel
6.0
15.17
66
330
j 4
j 0.5
142.6
Unknown
Unknown
63.0
89.0
Panel
6.0
15.17
66
330
5
142.6
Unknown
Unknown
63.0
89.0
Panel
6.0
15.17
66
330
142.6
Unknown
Unknown
63.0
89.0
Panel
6.0
15.17
66
90
I5
142.6
Unknown
Unknown
63.0
89.0
Panel
6.0
15.17
66
90
142.6
Unknown
Unknown
63.0
89.0
Panel
6.0
15.17
66
90
142.6
Unknown
Unknown
63.0
99.0
Panel
6.0
15.17
66
210
4
0.5
142.6
Unknown
Unknown
63.0
89.0
Panel
6.0
15.17
66
210
4
0.5
142.6
Unknown
Unknown
63.0
89.0
Panel
6.0
15.17
66
210
1 4
1 0.5
142.6
Unknown
Unknown
73.0
99.0
Panel
6.0
15.17
66
330
4
0.5
142.6
Unknown
Unknown
73.0
99.0
Panel
6.0
15.17
66
330
4
0.5
142.6
Unknown
Unknown
73.0
99.0
Panel
6.0
15.17
66
330
4
0.5
142.6
Unknown
Unknown
73.0
99.0
Panel
l 6.0
15.17
66
90
Unknown -Ant 32
L19O0
1900 40.0
4
0.5
142.6
Unknown
Unknown
73.0
99.0
Panel
6.0
15.17
66
90
Unknown -Ant 33
L19O0
1900 40.0
4
0.5
142.6
_
Unknown
Unknown
Unknown
73.0
99.0
Panel
6.0
15.17
66
90
Unknown -Ant 34
L19O0
1900 40.0
4
0.5
142.6
Unknown
73.0
99.0
Panel
6.0
15.17
66
210
Unknown -Ant 35
L19O0
1900 40.0
4
0.5
142.6
Unknown
Unknown
73.0
99.0
Panel
F6.0
15.17
66
210
Unknown -Ant 36
L19O0
1900 40.0
I 4
I 0.5
142.6
Unknown
Unknown
73.0
99.0
Panel
6.0
15.17
66
210
The antenna Z-heights listed above are referenced to Water Tank and Pitched Roof 1 Levels.
Page 9 of 23
4.3 RF Emissions Diagram(s) - All Transmitters
The following Diagram(s) represent the theoretical spatially averaged Maximum
Permissible Exposure (MPE) percentages that are expected for each study's elevation. An
additional 1% Occupational MPE Limit (5% General Population MPE limit) is included
to demonstrate where Verizon is a significant contributor to the accessible areas where
multiple carriers' transmitters may be present.
Reference Plane: Water Tank Level
Pitched i i Pitched
\� Roof 5 I I Roof 4
VZW Alpha
330'
VZW Beta
�114:; �I
LI
Water
Tank
VZW Gamma
2100 Ground
Pitched
Roof 3
Pitched
Roof 1
Percent MPE Legend
❑ 0%-1i
17.20:
20'.-1ar.
❑ 100% -1000%
1000i. +
occupational Limits
Sula 09
10 foot grid size
(Avg: 47 to 53 Feet)
Max Value: 39.79.
Carney Color Code
• Vefrzon
p UnImown
1--1
Pitched it —�
Roof 2 j
--j— J
Page 10 of 23
Reference Plane: Pitched Roof 1 Level
Pitched i i Pitched
Roof 5 I I Roof 4
\-Jr
VZW Alpha
3300
Pitched
Roof 3
V.
VZW Beta ��—
Percent MPE Legend
❑ 0%-1%
❑
1 %-20%
❑
20 % - 100%
❑
100%-1000%
E
1000 %
Occupational Limits
Sula 09
10 toot grid size
(Avg 21 to 27 Feet)
Max Value 8 26 %
Carrier Color Code
Venzon
QUnknown
900
`ice '�♦ I Pitched
L=J I Roof 1 I
Water
Tank
/`ii,
VZW Gamma
2100 r
Ground
Pitched — J
Roof 2
F-�
L---J
Page 11 of 23
4.4 RE Emissions Diagram(s) - Verizon Transmitters Only
The following Diagram(s) represent the theoretical spatially averaged Maximum
Permissible Exposure (MPE) percentages that are expected for each study's elevation. An
additional 1% Occupational MPE Limit (5% General Population MPE limit) is included
to demonstrate where Verizon is a significant contributor to the accessible areas where
multiple carriers' transmitters may be present.
Reference Plane: Water Tank Level
Pitched i i Pitched
\� Roof 5 I I Roof 4
16
_J —
VZW Alpha
3300
Percent MPE Legend
❑ 0%-1%
\�
�'� `
1 % - 20%
1
20% -100%
❑ 100%-1000%
E 1000% +
occupational Lirrrts
Sub 09
Pitched
10 foot grid size
Roof 3 i
(Avg: 47 to 53 Feet)
',/ 4
Max Vakre: 39.78
Carrier Color Code
�r
Verizon
N'ZNN' Beta—�—
OUnknown
90°
Pitched
Roof 1
Water _
Tank
VZW Garrirna
210° Ground
1
- I
Pitched
Roof 2
r-�
L---J
Page 12 of 23
Reference Plane: Pitched Roof 1 Level
Pitched Pitched
Roof 5 Roof 4
VZW Alpha
3300
,r
Water
Tank
It
VZW Gamma
2100 r
i
i
Percent MPE Legend
C
❑ 0:-1%
❑ 1 % - 20%
❑ 20 % - 100%
❑ 100%-1000%
E 1000 %
Occupational Limits
Sula 09
Pitched
10 foot grid size
Roof 3
(Avg 21 to 27 Feet)
J
Max Value 8 26 %
V Carrier Color Code
Venzon
QUnknown
VZW Beta —r-
90°
Pitched I WWI
Roof 1
Grolind
Pitched
Roof 2
F-�
L---J
Page 13 of 23
5 Signage/ Mitigation
5.1 Signage/ Barrier Detail
Final Compliant
Configuration
-CAUTION'
OWARNI_
.'
---
GUIDELINES
NOTICE
CAUTION
WARNING
NOC INFO
BARRIER/MARKER
Access Point(s)
❑x [1] *
❑ [ ]
❑ [ ]
❑ [ ]
x❑ [1] *
❑
Alpha
❑[]
❑[]
❑[]
❑[]
❑[]
❑
Beta
❑[]
❑[]
❑[]
❑[]
❑[l
❑
Gamma
❑[]
❑[]
❑[l
❑[l
❑[l
❑
NOTE: The table represents either the signage/barriers installed / removed OR items
required by the market (if mitigation is not installed by consultant/vendor).
* These RF signs should be posted at VZW Equipment. (See drawing in Section 5.2).
S ecialty Sign Detail
Location
N/A
Access Point
N/A
Alpha
N/A
Beta
N/A
Gamma
N/A
NOTE: The tables above represent EXISTING compliance items implemented at this location.
Notes/ Additional Compliance Requirements(s):
Mitigation is required per the Signage/ Barrier Diagram.
Table 2: Mitigation Requirements for Compliance
Page 14 of 23
5.2 Signage/Barrier Diagram
VZW t I Concrete Pad
Pad
Ground
NOC and Guidelines signs need to be
posted at VZW Equipment.
L.
A
% Y�
I
crete ,
Y J
Page 15 of 23
6 Conclusions and Recommendations
• The results of the analysis indicate that the power density levels in the generally
accessible areas on the Water Tank Level will not exceed the FCC's MPE limit
for General Population limit.
• The results of the analysis indicate that the power density levels in the generally
accessible areas on the Pitched Roof 1 Level will not exceed the FCC's MPE
limit for General Population limit.
• The max theoretical % MPE is 39.78% directly in front of antennas at the Water
Tank Level.
Note: Modifications to the site: and/or increases in channel counts or power levels exceedingthose
hose
listed in this report will require additional evaluation to determine compliance.
Page 16 of 23
7 Appendix A: FCC Compliance and RF Safety Policies
In August of 1997, the FCC published OET Bulletin 65 Edition 97-01 to regulate
methods for evaluating compliance with FCC guidelines for human exposure to
radiofrequency (RF) electromagnetic fields. The FCC guidelines for human exposure to
RF electromagnetic fields incorporate two categories of limits; namely "Controlled"
(a.k.a. Occupational) and "Uncontrolled" (a.k.a. General Public). The guidelines offer
suggested methods for evaluating fixed RF transmitters to ensure that the controlled and
uncontrolled limits deemed safe by the FC for human exposure are not exceeded.
OET Bulletin 65 recommended guidelines are intended to allow an applicant to "make a
reasonably quick determination as to whether a proposed facility is in compliance with
the limits." In addition, the guidelines offer alternate supplementary considerations and
procedures such as field measurements and more detailed analysis that should be used for
multiple emitter situations.
These guidelines define RF as emissions in the frequency range of 300 kHz to 100 GHz.
The FCC define Maximum Permissible Exposure (MPE) limits within this frequency
range based on limits recommended by the National Council on Radiation Protection and
Measurement, the Institute of Electrical and Electronics Engineers (IEEE), and by the
American National Standards Institute (ANSI).
The specific MPE limits defined by the FCC are as follows:
Frequency
Electric Field
Magnetic Field
Power Density
Averaging Time JEJ^2,
Range [MHz]
Strength (E) [V/m]
Strength (H) [A/m]
(S) [mW/Cm^2]
JHJ^2 or S [minutes]
0.3 - 3.0
614
1.63
100*
6
3.0 - 30
1842/f
4.89/f
900/f^2*
6
30 - 300
61.4
0.163
1
6
300 - 1,500
-
-
f/300
6
1,500 - 100,000
-
-
5
6
Limits for General Population/Uncontrolled Exposure
Frequency
Electric Field
Magnetic Field
Power Density Averaging
Time JEJ^2,
Range [MHz]
Strength (E) [V/m]
Strength (H) [A/m]
(S) [mW/Cm"2] JHJ^2 or S
[minutes]
0.3 - 3.0
614
1.63
100*
30
3.0 - 30
842/f
2.19/f
180/f^2*
30
30 - 300
27.5
0.073
0.2
30
300 - 1,500
-
-
f/1500
30
11,500 - 100,000
-
-
1
30
f = frequency *Plane -wave equivalent power density
The FCC states that "Occupational/ Controlled limits apply in situations in which persons
are exposed as a consequence of their employment provided those persons are fully
aware of the potential for exposure and can exercise control over their exposure. Limits
for Occupational/ Controlled exposure also apply in situations when an individual is
transient through a location where Occupational/ Controlled limits apply provided he or
she is made aware of the potential for exposure."
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For General Population/ Uncontrolled limits, the FCC states that "General Population/
Uncontrolled exposures apply in situations in which the general public may be exposed,
or in which persons that are exposed as a consequence of their employment may not fully
be aware of the potential for exposure or cannot exercise control over their exposure."
For purposes of this analysis, all limits are evaluated against the Power Density limits.
Typical guidelines for determining whether Occupational/ Controlled limits can be
applied include ensuring the environment (such as a rooftop) as limited/controlled access
via locked doors or physical barrier that are preferably controlled by a landlord that is
aware of the situation and can inform anyone going through the locked door of the
existence of the RF emissions. Such notification/awareness is typically accomplished by
means of signage on the door, or other access to the area of concern, as well as signage
on or near the antennas. Examples of such signs include the following:
GUIDELINES
NOTICE
CAUTION
WARNING
This sign will inform
This sign indicates
This sign indicates
This sign indicates that RF
anyone of the basic
that RF emissions
that RF emissions
emissions may exceed at
precautions to follow
may exceed the FCC
may exceed the
least 10x the FCC
when entering an
General Population
FCC Occupational
Occupational MPE limit.
area with
MPE limit.
MPE limit.
transmitting
radiofrequency
equipment.
® NOTICE ®
A CAUTION
NOC INFORMATION
Information signs are used as a means to provide contact information for any
''
questions or concerns. They will include specific cell site identification
_.:-°"=='=°"
information and the Verizon Wireless Network Operations Center phone
.- °"
number.
Standards for when to use each of the above signs for Occupational situations are as
follows:
No sign required: <20% of Occupational MPE
Blue Sign, Notice: 20% to <100% of MPE
Yellow Sign, Caution: 100% to <1000% of MPE
Red Sign, Warning: >_1000% of MPE
All MPE references are to the FCC Occupational limits.
Page 18 of 23
8 Appendix B: Overview of RoofMaster® Functions and
Assumptions
RoofMaster® is a RF Compliance software package designed to enable the analysis,
assessment and mitigation of communications sites with respect to human exposure to
radiofrequency electromagnetic fields.
RoofMaster® was developed in 2008 by Waterford Consultants to support compliance
assessments performed at single and multi -operator wireless locations throughout North
America and has been in service since 2008. Real -world experience in evaluating
thousands of base station installations is reflected in the RoofMaster® design approach.
This document provides a guide for creating simulations of RF hazard conditions through
the characterization of antenna systems and site features and through FCC -specified
computational analysis.
On any structure, one may encounter antennas installed by wireless service providers,
public safety and other FCC -licensed and unlicensed operators. Siting constraints have
resulted in diverse and complex environments accessible to people performing a variety
of activities around these antennas. RoofMaster® supports the characterization of these
locations to convey important information regarding RF sources and accessible areas
necessary to evaluate the potential for human exposure to hazardous levels of RF energy.
RoofMaster® supports the depiction of communications sites through the display of
construction drawing or aerial photography image files as well as providing line drawing
tools. These representations are scalable to enable the modeling of any location.
RoofMaster® utilizes a three-dimensional spatial framework consisting of a 1000 x 1000
grid with unlimited vertical dimensions necessary for the positioning of antennas and
modeling of RF conditions at each grid point throughout the space. Predictive analysis is
performed on a study plane at a specified elevation. The subsequent sections of this guide
provide the steps necessary to create a site representation and conduct these studies.
RoofMaster® employs several power density prediction models based on the
computational approaches set forth in the Federal Communications Commission's
Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency
Electromagnetic Fields, OET Bulletin 65. This guideline utilizes several antenna and
operational parameters in calculating the power density contributions from each emitter
at specified points throughout the study space. RoofMaster® enables antennas to be fully
defined in site specific aspects as well as through the use of a library of manufacturer
data. The parameters include:
Page 19 of 23
§ Antenna model
§ Radiation patterns
§ Aperture length
§ Gain
§ Beamwidth
§ Antenna radiation center
§ Azimuth
§ Mechanical downtilt
§ Location
§ Frequency
§ Power into antenna
In OET-65, the Cylindrical Model is presented as an approach to determine the spatially
averaged power density in the near field directly in front of an antenna. In order to
implement this model in all directions, RoofMaster® utilizes the antenna manufacturer
horizontal pattern data. Additionally, RoofMaster® incorporates factors that reduce the
power density by the inverse square of horizontal and vertical distance beyond the near
field region.
Power density is calculated as follows:
S _
(( 360 P,.,,G,,H,,V 11w
Beamwidt G,TRh . cn1
• S is the spatially averaged power density value
• R is the horizontal distance meters to the study point
• h is the aperture length in meters
• Pin is power into the antenna input port in Watts
RoofMaster® Implementation:
• Gx is gain offset to study point as specified in manufacturer horizontal pattern
• Pin is adjusted by the portion of the antenna aperture in the 0-6 ft. vertical study
zone
• Hr accounts for 1/R2 Far Field roll off which starts at 2*h
• Vr accounts for 1/ (vertical distance)2 roll off from antenna bottom to the top of
the 0-6 ft. study zone (or antenna top to bottom of 0-6 ft. study zone)
Page 20 of 23
Z-
----------- T :�>8eamwidth
Horizontal Distance
Page 21 of 23
9 References
FCC (1997). "Evaluating Compliance with FCC Guidelines for Human Exposure to
Radiofrequency Electromagnetic Fields"; Federal Communications Commission; Office
of Engineering and Technology, OET Bulletin 65, Edition 97-01, August.
Waterford Consultants, LLC (2008). RoofMaster® User Guide, Waterford
Consultants, LLC.
Page 22 of 23
10 Limited Warranty
Pramira, Inc. warrants that this analysis was performed in good faith using the
methodologies and assumptions covered in this report and that data used for the analysis
and report were obtained by Pramira, Inc. employees or representatives via site surveys
or research of Verizon's available information. In the event that specific third -party
details were not available, best efforts were made to use assumptions that are based on
industry experience of various carriers' standards without violating any confidential
information obtained under non -disclosure terms.
Pramira, Inc. also warrants that this analysis was performed in accordance with industry
acceptable standards and methods.
There are no other warranties, express or implied, including but not limited to, the
implied warranties of merchantability and fitness for a particular purpose, relating to this
agreement or to the services rendered by Pramira hereunder. In no event shall Pramira be
held liable to Verizon, or to any third party, for any indirect, special, incidental, or
consequential damages, including but not limited to loss of profits, loss of data, loss of
good will, and increased expenses. In no event shall Pramira be liable to Verizon for
damages, whether based in contract, tort, negligence, strict liability, or otherwise,
exceeding the amount payable hereunder for the services giving rise to such liability.
Page 23 of 23