EME_Report_AppleComputerNCAP002456.09.28.2020.rev1Compliance Statement
Based on information provided by Verizon Wireless, field measurements and predictive modeling, the Apple
Computer NCA-P-002456 installation by Verizon Wireless is compliant with Radiofrequency Radiation
Exposure Limits of 47 C.F.R. §§ 1.1307(b)(3) and 1.1310 based on the proper mitigation being in place. On-
site measurements collected by Verizon Wireless contractors were found to be below 100% of the FCC
General Population Maximum Permissible Exposure (MPE) limits in areas where mitigation is not in place
which is supportive of Waterford’s worst-case predictive analysis. Therefore, the operations at this location in
unmitigated areas will not expose members of the General Public to hazardous levels of RF energy at ground
level or in adjacent buildings.
Certification
I, David H. Kiser, am the reviewer and approver of this
report and am fully aware of and familiar with the Rules
and Regulations of both the Federal Communications
Commissions (FCC) and the Occupational Safety and
Health Administration (OSHA) with regard to Human
Exposure to Radio Frequency Radiation, specifically in
accordance with FCC’s OET Bulletin 65. I have
reviewed this Radio Frequency Exposure Assessment
report and believe it to be both true and accurate to the
best of my knowledge.
General Summary
The compliance framework is derived from the Federal Communications Commission (FCC) Rules and
Regulations for preventing human exposure in excess of the applicable Maximum Permissible Exposure
(“MPE”) limits. At any location at this site, the power density resulting from each transmitter may be expressed
as a percentage of the frequency-specific limits and added to determine if 100% of the exposure limit has been
exceeded. The FCC Rules define two tiers of permissible exposure differentiated by the situation in which the
exposure takes place and/or the status of the individuals who are subject to exposure. General Population /
Uncontrolled exposure limits apply to those situations in which persons may not be aware of the presence of
electromagnetic energy, where exposure is not employment-related, or where persons cannot exercise control
over their exposure. Occupational / Controlled exposure limits apply to situations in which persons are exposed
as a consequence of their employment, have been made fully aware of the potential for exposure, and can
exercise control over their exposure. Based on the criteria for these classifications, the FCC General
Population limit is considered to be a level that is safe for continuous exposure time. The FCC General
Population limit is 5 times more restrictive than the Occupational limits.
Radio Frequency Emissions Compliance Report For Verizon Wireless
Site Name: Apple Computer NCA-P-
002456
Site Structure Type: Rooftop
Address: 2 Infinite Loop Latitude: 37.332442
Cupertino, CA 95014 Longitude: -122.030238
Report Date: September 28, 2020 Project: Modification
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
Table 1: FCC Limits
Frequency
(MHz)
Limits for General Population/ Uncontrolled Exposure Limits for Occupational/ Controlled Exposure
Power Density
(mW/cm2)
Averaging Time
(minutes)
Power Density
(mW/cm2)
Averaging Time
(minutes)
30-300 0.2 30 1 6
300-1500 f/1500 30 f/300 6
1500-100,000 1.0 30 5.0 6
f=Frequency (MHz)
In situations where the predicted MPE exceeds the General Population threshold in an accessible area as a
result of emissions from multiple transmitters, FCC licensees that contribute greater than 5% of the aggregate
MPE share responsibility for mitigation.
Based on the computational guidelines set forth in FCC OET Bulletin 65, Waterford Consultants, LLC has
developed software to predict the overall Maximum Permissible Exposure possible at any location given the
spatial orientation and operating parameters of multiple RF sources. The power density in the Far Field of an
RF source is specified by OET-65 Equation 5 as follows:
!= !"#$
%⋅'⋅#! (mW/cm()
where EIRP is the Effective Radiated Power relative to an isotropic antenna and R is the distance between
the antenna and point of study. Additionally, consideration is given to the manufacturers’ horizontal and
vertical antenna patterns as well as radiation reflection. At any location, the predicted power density in the
Far Field is the spatial average of points within a 0 to 6-foot vertical profile that a person would occupy. Near
field power density is based on OET-65 Equation 20 stated as
!=*180
.)*
/⋅100 ⋅1+,
2 ⋅3 ⋅ℎ (mW/cm()
where Pin is the power input to the antenna, qBW is the horizontal pattern beamwidth and h is the aperture
length.
These theoretical results represent worst-case predictions as all RF emitters are assumed to be operating at
100% duty cycle.
For any area in excess of 100% General Population MPE, access controls with appropriate RF alerting signage
must be put in place and maintained to restrict access to authorized personnel. Signage must be posted to be
visible upon approach from any direction to provide notification of potential conditions within these areas.
Subject to other site security requirements, occupational personnel should be trained in RF safety and
equipped with personal protective equipment (e.g. RF personal monitor) designed for safe work in the vicinity
of RF emitters. Controls such as physical barriers to entry imposed by locked doors, hatches and ladders or
other access control mechanisms may be supplemented by alarms that alert the individual and notify site
management of a breach in access control. Waterford Consultants, LLC recommends that any work activity
in these designated areas or in front of any transmitting antennas be coordinated with all wireless tenants.
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
Analysis
Verizon Wireless has installed the following at this location:
• This wireless telecommunication facility is located on a building rooftop.
• The antennas are mounted on short poles attached and connected to the equipment via coaxial cables.
Antenna operating parameters are listed in Appendix A. Measurement results from the site survey are listed
in Appendix B. Other appurtenances such as GPS antennas, RRUs and hybrid cable below the antennas are
not sources of RF emissions. Panel antennas have been installed at this site by other wireless operators.
While the ERP for equipment controlled by another operator is not known, the contribution to existing RF levels
at this site by any existing operator is represented in the survey results. Operating parameters for these
antennas considered in this analysis are also listed in Appendix A.
Figure 1: Antenna Locations
Power density decreases significantly with distance from any antenna. The panel-type antennas to be
employed at this site are highly directional by design and the orientation in azimuth and mounting elevation,
as documented, serves to reduce the potential to exceed MPE limits at any location other than directly in front
of the antennas. As shown in Appendix B, measurements collected at accessible areas were found to be
below the FCC General Population limits. Verizon Wireless’ contractors used a broadband probe that provides
cumulative exposure readings that consider all RF Sources.
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
To account for accessible areas near the antennas, RF alerting signs and indicative markings (paint) have
been posted as depicted in Figure 2.
Any work activity in front of transmitting antennas should be coordinated with Verizon Wireless
Figure 2: Mitigation Measures
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
Appendix A: Operating Parameters Considered in this Analysis
Antenna #: Carrier: Manufacturer Pattern: Band:
Mech
Az
(deg):
Mech
DT
(deg):
H BW
(deg):
Length
(ft):
TPO
(W): Channels:
Loss
(dB):
Gain
(dBd):
ERP
(W):
EIRP
(W):
Rad
Center
(ft):
1 Verizon COMMSCOPE LNX-6512DS-VTM 00DT 850 110 0 65 4 237.7 1 0 12.961 4701 7712 71.1
2 Verizon COMMSCOPE SBNHH-1D65A 00DT 700 110 0 66 4.6 295.8 1 0 11.21 3909 6413 71.1
2 Verizon COMMSCOPE SBNHH-1D65A 00DT 1900 110 0 65 4.6 289.8 1 0 14.7 8554 14034 71.1
2 Verizon COMMSCOPE SBNHH-1D65A 00DT 2100 110 0 62 4.6 304.2 1 0 14.7 8978 14729 71.1
3 Verizon POWERWAVE P65-15-XLH-RR 00DT 850 210 0 64 4.3 283.2 1 0 12.35 4865 7981 71.1
4 Verizon COMMSCOPE SBNHH-1D65A 00DT 700 210 0 66 4.6 281.8 1 0 11.21 3724 6110 71.1
4 Verizon COMMSCOPE SBNHH-1D65A 00DT 1900 210 0 65 4.6 292.5 1 0 14.7 8633 14163 71.1
4 Verizon COMMSCOPE SBNHH-1D65A 00DT 2100 210 0 62 4.6 310.6 1 0 14.7 9166 15038 71.1
5 Verizon COMMSCOPE LNX-6512DS-VTM 00DT 850 335 0 65 4 242.2 1 0 12.961 4789 7857 71.1
6 Verizon COMMSCOPE SBNHH-1D65A 00DT 700 335 0 66 4.6 295.8 1 0 11.21 3909 6413 71.1
6 Verizon COMMSCOPE SBNHH-1D65A 00DT 1900 335 0 65 4.6 291.8 1 0 14.7 8613 14130 71.1
6 Verizon COMMSCOPE SBNHH-1D65A 00DT 2100 335 0 62 4.6 300.7 1 0 14.7 8875 14560 71.1
7 T-Mobile AMPHENOL HEX336CW0000x-T00 1900 90 0 33 6.1 35.5 2 0 16.4 3099 5084 67.2
7 T-Mobile AMPHENOL HEX336CW0000x-T00 2100 90 0 34 6.1 30.2 2 0 16.7 2826 4636 67.2
8 T-Mobile AMPHENOL HEX336CW0000x-T00 1900 270 0 33 6.1 35.5 2 0 16.4 3099 5084 67.2
8 T-Mobile AMPHENOL HEX336CW0000x-T00 2100 270 0 34 6.1 30.2 2 0 16.7 2826 4636 67.2
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
Appendix B: Post Activation On-Site Measurements Summary (Dtech Communications, LLC)
MPE results represented as percentage of the FCC Occupational limits
Survey Date: 10/12/18