283299.DeAnzaHomesteadSC1NCAP171367.JxReport.09.29.2020Compliance Statement
Based on information provided by Verizon, field measurements and predictive modeling, the De Anza &
Homestead SC1 NCA-P-171367 installation proposed by Verizon is compliant with Radiofrequency Radiation
Exposure Limits of 47 C.F.R. §§ 1.1307(b)(3) and 1.1310. The proposed operation will not expose members
of the General Public to hazardous levels of RF energy at accessible areas on the rooftop, 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
Site Name: De Anza & Homestead SC1
NCA-P-171367
Site Structure Type: Rooftop
Address: 20589 Homestead Road Latitude: 37.33773056
Cupertino, CA 95014 Longitude: -122.0343972
Report Date: September 29, 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
Waterford Consultants, LLC field personnel visited the site on September 23, 2020 during business hours and
collected data with regard to the RF environment. All accessible areas of the site were inspected.
Measurement collection was performed using Narda Radiation meter NBM 550 and broadband probe EA-5091
(300 kHz to 50 GHz) and was consistent with FCC and Narda procedures, regarding the location of the probe
to the RF source and making slow sweeping motions over the area that a person would occupy. Power density
values were recorded as a percentage of the FCC Occupational limits. In using this broadband instrument, the
results represent the cumulative contributions of all RF sources at the measurement locations. The maximum
cumulative power density reading was 0.1287% of the FCC Occupational limits (0.6435% of the General
Population limits). Measurement locations and tabulated results are presented in Appendix B.
Verizon proposes the following installation at this location:
• 1 (P) INTEGRATED PANEL ANTENNA/MRRU
The antennas are mounted on a 16-foot Rooftop with centerlines 17 & 15.8 feet above ground level. Antenna
operating parameters are listed in Appendix A. Other appurtenances such as GPS antennas, RRUs and hybrid
cable below the antennas are not sources of RF emissions. No other antennas are known to be operating in
the vicinity of this site.
Figure 1: Antenna Locations
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
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. For accessible areas at ground level, the maximum predicted power density level resulting
from all Verizon operations is 14.4682% of the FCC General Population limits. Incident at adjacent buildings
depicted in Figure 1, the maximum predicted power density level resulting from all Verizon operations is
1.0988% of the FCC General Population limits. The proposed operation will not expose members of the
General Public to hazardous levels of RF energy at ground level or in adjacent buildings.
For accessible areas at the roof level of 20589 Homestead Road, the maximum predicted power density level
resulting from all Verizon operations is 0.1652% of the FCC Occupational limits (0.826% of the FCC General
Population limits). Waterford Consultants, LLC recommended posting of contact information and RF
Guidelines signage that informs personnel entering the site of basic precautions to be followed when working
around antennas has been installed. These mitigation measures are depicted in Figure 2. Any work activity in
front of transmitting antennas should be coordinated with Verizon.
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
Signage/Barrier Diagram (Access)
Figure 2: Mitigation Measures
Final Compliant
Configuration
GUIDELINES NOTICE CAUTION WARNING NOC INFO BARRIER/MARKER
Access Point(s) ☒ [1] ☐ [#] ☐ [#] ☐ [#] ☒ [1] ☐ N/A
NOTE: The table above represents EVERY compliance item that MUST be implemented at this location.
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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 ERICSSON Panel < 6 GHz Unlicensed 180 0 89.4 0.6 0.3 2 0 7.05 3.2 5.3 17
2 Verizon COMMSCOPE Panel < 6 GHz Licensed 180 0 66 4.6 30 2 0 11.21 793 1301 15.8
2 Verizon COMMSCOPE Panel < 6 GHz Licensed 180 0 65 4.6 60 2 0 14.7 3541 5810 15.8
2 Verizon COMMSCOPE Panel < 6 GHz Licensed 180 0 62 4.6 60 2 0 14.7 3541 5810 15.8
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
Appendix A: Field Measurement Locations and Results
Survey Date: 9/23/2020
Measurement Readings are Spatial Average and Maximum as MPE % of FCC Occupational Limit
Loc#
Site Reading
Loc#
Site Reading
Avg Max Avg Max
1 0.1287% 0.8749% 2 0.0676% 0.3608%
3 0.0410% 0.1825% 4 0.0628% 0.3079%