HomeMy WebLinkAboutUP20-0001_RF_Emissions_ReportCompliance Statement
Based on information provided by Verizon and predictive modeling, the Keefer installation proposed by Verizon
will be 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 and
will not contribute to existing cumulative MPE levels on walkable surfaces at ground or in adjacent buildings
by 5% of the General Population limits. As predicted RF power densities will not exceed the FCC General
Population limits, no mitigation action is needed to achieve or maintain compliance.
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: Keefer Site Structure Type: Monopine
Address: 8334 Shorthorn Drive Latitude: 39.815047
Chico, CA 95973 Longitude: -121.897572
Report Date: May 4, 2020 Project: New Build
Keefer - New Build 05.04.20
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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:
𝑅= 𝐸𝐼𝑅𝑃
4⋅𝜋⋅𝑅2 (mW/cm2)
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
𝑅=(180
𝜃𝐵𝑊
)⋅100⋅𝑃𝑖𝑛
𝜋⋅𝑅⋅ℎ (mW/cm2)
where Pin is the power input to the antenna, BW 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.
Keefer - New Build 05.04.20
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
Analysis
Verizon proposes the following installation at this location:
• (9) NEW VERIZON WIRELESS 8' HIGH PANEL ANTENNAS
• (12) NEW VERIZON WIRELESS RADIOS
The antennas will be mounted on an 85-foot Monopine with centerlines 80 feet above ground level. Proposed
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
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 0.2339% 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
0.2408% of the FCC General Population limits. The proposed operation will not expose members of the
General Public to hazardous levels of RF energy and will not contribute to existing cumulative MPE levels on
walkable surfaces at ground or in adjacent buildings by 5% of the General Population limits. As predicted RF
Keefer - New Build 05.04.20
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7430 New Technology Way, Suite 150 Frederick, Maryland 21703 (703) 596-1022 Phone www.waterfordconsultants.com
power densities will not exceed the FCC General Population limits, no mitigation action is needed to achieve
or maintain compliance.
Keefer - New Build 05.04.20
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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 NHH-45C-R2B 02DT 700 80 0 48 8 60 4 0 15.34 8208 13465 80
1 Verizon COMMSCOPE NHH-45C-R2B 02DT 850 80 0 43 8 60 2 0.5 16.14 4397 7214 80
2 Verizon COMMSCOPE NHH-45C-R2B 02DT 1900 80 0 38 8 80 4 0.5 17.37 15565 25536 80
3 Verizon COMMSCOPE NHH-45C-R2B 02DT 2110 80 0 42 8 40 4 0.5 17.72 8436 13839 80
3 Verizon COMMSCOPE NHH-45C-R2B 02DT 2155 80 0 42 8 40 4 0.5 17.72 8436 13839 80
4 Verizon COMMSCOPE NHH-45C-R2B 04DT 700 150 0 48 8 60 2 0.5 15.42 3725 6112 80
4 Verizon COMMSCOPE NHH-45C-R2B 04DT 850 150 0 43 8 60 2 0.5 16.2 4458 7314 80
5 Verizon COMMSCOPE NHH-45C-R2B 04DT 1900 150 0 38 8 80 4 0.5 17.36 15529 25477 80
6 Verizon COMMSCOPE NHH-45C-R2B 04DT 2110 150 0 42 8 40 4 0.5 17.84 8672 14227 80
6 Verizon COMMSCOPE NHH-45C-R2B 04DT 2155 150 0 42 8 40 4 0.5 17.84 8672 14227 80
7 Verizon COMMSCOPE NHH-45C-R2B 04DT 700 265 0 48 8 60 2 0.5 15.42 3725 6112 80
7 Verizon COMMSCOPE NHH-45C-R2B 04DT 850 265 0 43 8 60 2 0.5 16.2 4458 7314 80
8 Verizon COMMSCOPE NHH-45C-R2B 04DT 1900 265 0 38 8 80 4 0.5 17.36 15529 25477 80
9 Verizon COMMSCOPE NHH-45C-R2B 04DT 2110 265 0 42 8 40 4 0.5 17.84 8672 14227 80
9 Verizon COMMSCOPE NHH-45C-R2B 04DT 2155 265 0 42 8 40 4 0.5 17.84 8672 14227 80
10 Verizon GENERIC MICROWAVE 6FT 6000 90 0 1.5 6 0.2 1 0 38.7 1483 2432 71
11 Verizon ANDREW VHLP2-18 18000 330 0 2.1 2 0.2 1 0 37 1002 1644 71