HomeMy WebLinkAbout20190426_Radio Freq ReportRadio Frequency – Electromagnetic Energy
(RF-EME) Compliance Report
Site No. CSTAM 2
MRLOS051929
CRAN_RLOS_CSTAM_002
190 Newport Center Drive
Newport Beach, California 92660
Orange County
33.610920; -117.877600 NAD83
Light Pole
The proposed AT&T installation will be in compliance with FCC regulations
upon proper installation of recommended signage.
EBI Project No. 6219000755
March 14, 2019
Prepared for:
AT&T Mobility, LLC
100 W Alondra Blvd
Gardena, California 90248
Prepared by:
PA2019-077
RF-EME Compliance Report USID No. 213733 Site No. CSTAM 2
EBI Project No. 6219000755 190 Newport Center Drive, Newport Beach, California
EBI Consulting 21 B Street Burlington, MA 01803 1.800.786.2346 i
TABLE OF CONTENTS
EXECUTIVE SUMMARY..................................................................................................................... 1
1.0 FEDERAL COMMUNICATIONS COMMISSION (FCC) REQUIREMENTS ................................... 3
2.0 AT&T RF EXPOSURE POLICY REQUIREMENTS .................................................................... 5
3.0 WORST-CASE PREDICTIVE MODELING ................................................................................. 5
4.0 RECOMMENDED SIGNAGE/COMPLIANCE PLAN .................................................................... 7
5.0 SUMMARY AND CONCLUSIONS ............................................................................................. 8
6.0 LIMITATIONS ......................................................................................................................... 8
APPENDICES
Appendix A Personnel Certifications
Appendix B Compliance/Signage Plan
PA2019-077
RF-EME Compliance Report USID No. 213733 Site No. CSTAM 2
EBI Project No. 6219000755 190 Newport Center Drive, Newport Beach, California
EBI Consulting 21 B Street Burlington, MA 01803 1.800.786.2346
EXECUTIVE SUMMARY
Purpose of Report
EnviroBusiness Inc. (dba EBI Consulting) has been contracted by AT&T Mobility, LLC to conduct radio
frequency electromagnetic (RF-EME) modeling for AT&T Site CSTAM 2 located at 190 Newport
Center Drive in Newport Beach, California to determine RF-EME exposure levels from proposed AT&T
wireless communications equipment at this site. As described in greater detail in Section 1.0 of this
report, the Federal Communications Commission (FCC) has developed Maximum Permissible Exposure
(MPE) Limits for general public exposures and occupational exposures. This report summarizes the
results of RF-EME modeling in relation to relevant FCC RF-EME compliance standards for limiting
human exposure to RF-EME fields.
This report contains a detailed summary of the RF EME analysis for the site, including the following:
Site Plan with antenna locations
Graphical representation of theoretical MPE fields based on modeling
Graphical representation of recommended signage and/or barriers
This document addresses the compliance of AT&T’s transmitting facilities independently and in relation
to all collocated facilities at the site.
Statement of Compliance
A site is considered out of compliance with FCC regulations if there are areas that exceed the FCC
exposure limits and there are no RF hazard mitigation measures in place. Any carrier which has an
installation that contributes more than 5% of the applicable MPE must participate in mitigating these RF
hazards.
As presented in the sections below, based on worst-case predictive modeling, there are no modeled
exposures on any accessible utility line level and ground walking/working surface related to ATT’s
proposed antennas that exceed the FCC’s occupational and/or general public exposure limits at this site.
As such, the proposed AT&T installation is in compliance with FCC regulations upon proper installation
of recommended signage and/or barriers.
AT&T Recommended Signage/Compliance Plan
AT&T’s RF Exposure: Responsibilities, Procedures & Guidelines document, dated October 28, 2014,
requires that:
1. All sites must be analyzed for RF exposure compliance;
2. All sites must have that analysis documented; and
3. All sites must have any necessary signage and barriers installed.
Site compliance recommendations have been developed based upon protocols presented in AT&T’s RF
Exposure: Responsibilities, Procedures & Guidelines document, dated October 28, 2014, additional
guidance provided by AT&T, EBI’s understanding of FCC and OSHA requirements, and common
industry practice. Barrier locations have been identified (when required) based on guidance presented in
AT&T’s RF Exposure: Responsibilities, Procedures & Guidelines document, dated October 28, 2014.
PA2019-077
RF-EME Compliance Report USID No. 213733 Site No. CSTAM 2
EBI Project No. 6219000755 190 Newport Center Drive, Newport Beach, California
EBI Consulting 21 B Street Burlington, MA 01803 1.800.786.2346
The following signage is recommended at this site:
Blue NOTICE decals posted around the bottom of the radome of the antenna.
The signage proposed for installation at this site complies with AT&T’s RF Exposure: Responsibilities,
Procedures & Guidelines document and therefore complies with FCC and OSHA requirements. Barriers
are not recommended on this site. More detailed information concerning site compliance
recommendations is presented in Section 4.0 and Appendix B of this report.
PA2019-077
RF-EME Compliance Report USID No. 213733 Site No. CSTAM 2
EBI Project No. 6219000755 190 Newport Center Drive, Newport Beach, California
EBI Consulting 21 B Street Burlington, MA 01803 1.800.786.2346
1.0 FEDERAL COMMUNICATIONS COMMISSION (FCC) REQUIREMENTS
The FCC has established Maximum Permissible Exposure (MPE) limits for human exposure to
Radiofrequency Electromagnetic (RF-EME) energy fields, based on exposure limits recommended by the
National Council on Radiation Protection and Measurements (NCRP) and, over a wide range of
frequencies, the exposure limits developed by the Institute of Electrical and Electronics Engineers, Inc.
(IEEE) and adopted by the American National Standards Institute (ANSI) to replace the 1982 ANSI
guidelines. Limits for localized absorption are based on recommendations of both ANSI/IEEE and NCRP.
The FCC guidelines incorporate two separate tiers of exposure limits that are based upon
occupational/controlled exposure limits (for workers) and general public/uncontrolled exposure limits
for members of the general public.
Occupational/controlled exposure limits apply to situations in which persons are exposed as a
consequence of their employment and in which those persons who are exposed have been made fully
aware of the potential for exposure and can exercise control over their exposure. Occupational/
controlled exposure 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 public/uncontrolled limits (see
below), 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.
General public/uncontrolled exposure limits apply to situations in which the general public may be
exposed or in which persons who are exposed as a consequence of their employment may not be made
fully aware of the potential for exposure or cannot exercise control over their exposure. Therefore,
members of the general public would always be considered under this category when exposure is not
employment-related, for example, in the case of a telecommunications tower that exposes persons in a
nearby residential area.
Table 1 and Figure 1 (below), which are included within the FCC’s OET Bulletin 65, summarize the MPE
limits for RF emissions. These limits are designed to provide a substantial margin of safety. They vary by
frequency to take into account the different types of equipment that may be in operation at a particular
facility and are “time-averaged” limits to reflect different durations resulting from controlled and
uncontrolled exposures.
The FCC’s MPEs are measured in terms of power (mW) over a unit surface area (cm2). Known as the
power density, the FCC has established an occupational MPE of 5 milliwatts per square centimeter
(mW/cm2) and an uncontrolled MPE of 1 mW/cm2 for equipment operating in the 1900 MHz frequency
range. For the AT&T equipment operating at 850 MHz, the FCC’s occupational MPE is 2.83 mW/cm2
and an uncontrolled MPE of 0.57 mW/cm2. For the AT&T equipment operating at 700 MHz, the FCC’s
occupational MPE is 2.33 mW/cm2 and an uncontrolled MPE of 0.47 mW/cm2. These limits are
considered protective of these populations.
Table 1: Limits for Maximum Permissible Exposure (MPE)
(A) Limits for Occupational/Controlled Exposure
Frequency Range
(MHz)
Electric Field
Strength (E)
(V/m)
Magnetic Field
Strength (H)
(A/m)
Power Density (S)
(mW/cm2)
Averaging Time
[E]2, [H]2, or S
(minutes)
0.3-3.0 614 1.63 (100)* 6
3.0-30 1842/f 4.89/f (900/f2)* 6
30-300 61.4 0.163 1.0 6
300-I,500 -- -- f/300 6
PA2019-077
RF-EME Compliance Report USID No. 213733 Site No. CSTAM 2
EBI Project No. 6219000755 190 Newport Center Drive, Newport Beach, California
EBI Consulting 21 B Street Burlington, MA 01803 1.800.786.2346
Table 1: Limits for Maximum Permissible Exposure (MPE)
(A) Limits for Occupational/Controlled Exposure
Frequency Range
(MHz)
Electric Field
Strength (E)
(V/m)
Magnetic Field
Strength (H)
(A/m)
Power Density (S)
(mW/cm2)
Averaging Time
[E]2, [H]2, or S
(minutes)
1,500-100,000 -- -- 5 6
(B) Limits for General Public/Uncontrolled Exposure
Frequency Range
(MHz)
Electric Field
Strength (E)
(V/m)
Magnetic Field
Strength (H)
(A/m)
Power Density (S)
(mW/cm2)
Averaging Time
[E]2, [H]2, or S
(minutes)
0.3-1.34 614 1.63 (100)* 30
1.34-30 824/f 2.19/f (180/f2)* 30
30-300 27.5 0.073 0.2 30
300-I,500 -- -- f/1,500 30
1,500-100,000 -- -- 1.0 30
f = Frequency in (MHz)
* Plane-wave equivalent power density
Based on the above, the most restrictive thresholds for exposures of unlimited duration to RF energy
for several personal wireless services are summarized below:
Personal Wireless Service Approximate
Frequency
Occupational
MPE Public MPE
Personal Communication (PCS) 1,950 MHz 5.00 mW/cm2 1.00 mW/cm2
Cellular Telephone 870 MHz 2.90 mW/cm2 0.58 mW/cm2
Specialized Mobile Radio 855 MHz 2.85 mW/cm2 0.57 mW/cm2
Long Term Evolution (LTE) 700 MHz 2.33 mW/cm2 0.47 mW/cm2
Most Restrictive Freq, Range 30-300 MHz 1.00 mW/cm2 0.20 mW/cm2
MPE limits are designed to provide a substantial margin of safety. These limits apply for continuous
exposures and are intended to provide a prudent margin of safety for all persons, regardless of age,
gender, size, or health. Power Density (mW/cm2) PA2019-077
RF-EME Compliance Report USID No. 213733 Site No. CSTAM 2
EBI Project No. 6219000755 190 Newport Center Drive, Newport Beach, California
EBI Consulting 21 B Street Burlington, MA 01803 1.800.786.2346
Personal Communication (PCS) facilities used by AT&T in this area operate within a frequency range of
700-1900 MHz. Facilities typically consist of: 1) electronic transceivers (the radios or cabinets)
connected to wired telephone lines; and 2) antennas that send the wireless signals created by the
transceivers to be received by individual subscriber units (PCS telephones). Transceivers are typically
connected to antennas by coaxial cables.
Because of the short wavelength of PCS services, the antennas require line-of-site paths for good
propagation, and are typically installed above ground level. Antennas are constructed to concentrate
energy towards the horizon, with as little energy as possible scattered towards the ground or the sky.
This design, combined with the low power of PCS facilities, generally results in no possibility for
exposure to approach Maximum Permissible Exposure (MPE) levels, with the exception of areas directly
in front of the antennas.
2.0 AT&T RF EXPOSURE POLICY REQUIREMENTS
AT&T’s RF Exposure: Responsibilities, Procedures & Guidelines document, dated October 28, 2014,
requires that:
1. All sites must be analyzed for RF exposure compliance;
2. All sites must have that analysis documented; and
3. All sites must have any necessary signage and barriers installed.
Pursuant to this guidance, worst-case predictive modeling was performed for the site. This modeling is
described below in Section 3.0. Lastly, based on the modeling and survey data, EBI has produced a
Compliance Plan for this site that outlines the recommended signage and barriers. The recommended
Compliance Plan for this site is described in Section 4.0.
3.0 WORST-CASE PREDICTIVE MODELING
In accordance with AT&T’s RF Exposure policy, EBI performed theoretical modeling using RoofView®
software to estimate the worst-case power density at the site utility line level and ground-level resulting
from operation of the antennas. RoofView® is a widely-used predictive modeling program that has been
developed by Richard Tell Associates to predict both near field and far field RF power density values for
roof-top and tower telecommunications sites produced by vertical collinear antennas that are typically
used in the cellular, PCS, paging and other communications services. The models utilize several
operational specifications for different types of antennas to produce a plot of spatially-averaged power
densities that can be expressed as a percentage of the applicable exposure limit.
For this report, EBI utilized antenna and power data provided by AT&T and compared the resultant
worst-case MPE levels to the FCC’s occupational/controlled exposure limits outlined in OET Bulletin 65.
The assumptions used in the modeling are based upon information provided by AT&T and information
gathered from other sources. There are no other wireless carriers with equipment installed at this site.
Based on worst-case predictive modeling, there are no modeled exposures on any accessible utility line
level and ground walking/working surface related to ATT’s proposed antennas that exceed the FCC’s
occupational and/or general public exposure limits at this site.
At the nearest walking/working surfaces to the AT&T antennas on the utility line level, the maximum
power density generated by the AT&T antennas is approximately 17.30 percent of the FCC’s general
public limit (3.46 percent of the FCC’s occupational limit). The composite exposure level from all
carriers on this site is approximately 17.30 percent of the FCC’s general public limit (3.46 percent of the
FCC’s occupational limit) at the nearest walking/working surface to each antenna. Based on worst-case
PA2019-077
RF-EME Compliance Report USID No. 213733 Site No. CSTAM 2
EBI Project No. 6219000755 190 Newport Center Drive, Newport Beach, California
EBI Consulting 21 B Street Burlington, MA 01803 1.800.786.2346
predictive modeling, there are no areas at ground/street level related to the proposed AT&T antennas
that exceed the FCC’s occupational or general public exposure limits at this site. At ground/street level,
the maximum power density generated by the antennas is approximately 0.5 percent of the FCC’s
general public limit (0.1 percent of the FCC’s occupational limit).
A graphical representation of the RoofView® modeling results is presented in Appendix B. It should be
noted that RoofView® is not suitable for modeling microwave dish antennas; however, these units are
designed for point-to-point operations at the elevations of the installed equipment rather than ground-
level coverage. Based on AT&T’s RF Exposure: Responsibilities, Procedures & Guidelines document,
dated October 28, 2014, microwave antennas are considered compliant if they are higher than 20 feet
above any accessible walking/working surface. There are no microwaves installed at this site.
PA2019-077
RF-EME Compliance Report USID No. 213733 Site No. CSTAM 2
EBI Project No. 6219000755 190 Newport Center Drive, Newport Beach, California
EBI Consulting 21 B Street Burlington, MA 01803 1.800.786.2346
4.0 RECOMMENDED SIGNAGE/COMPLIANCE PLAN
Signs are the primary means for control of access to areas where RF exposure levels may potentially
exceed the MPE. As presented in the AT&T guidance document, the signs must:
Be posted at a conspicuous point;
Be posted at the appropriate locations;
Be readily visible; and
Make the reader aware of the potential risks prior to entering the affected area.
The table below presents the signs that may be used for AT&T installations.
Informational Signs – No longer in Use Alerting Signs
INFO 1
NOTICE 1 NOTICE 2
INFO 2
NOTICE DECAL
INFO 3
CAUTION 2 –
ROOFTOP
CAUTION 2B -
TOWER
INFO 4
CAUTION 2C -
PARAPETS
WARNING 2
PA2019-077
RF-EME Compliance Report USID No. 213733 Site No. CSTAM 2
EBI Project No. 6219000755 190 Newport Center Drive, Newport Beach, California
EBI Consulting 21 B Street Burlington, MA 01803 1.800.786.2346
Based upon protocols presented in AT&T’s RF Exposure: Responsibilities, Procedures & Guidelines
document, dated October 28, 2014, and additional guidance provided by AT&T, the following signage is
recommended on the site:
Blue NOTICE decals posted around the bottom of the radome of the antenna.
No barriers are required for this site. Barriers should be constructed of weather-resistant plastic or
wood fencing. Barriers may consist of railing, rope, chain, or weather-resistant plastic if no other types
are permitted or are feasible. Painted stripes should only be used as a last resort and only in regions
where there is little chance of snowfall. If painted stripes are selected as barriers, it is recommended
that the stripes and signage be illuminated. The signage and any barriers are graphically represented in
the Signage Plan presented in Appendix B.
5.0 SUMMARY AND CONCLUSIONS
EBI has prepared this Radiofrequency Emissions Compliance Report for the proposed AT&T
telecommunications equipment at the site located at 190 Newport Center Drive in Newport Beach,
California.
EBI has conducted theoretical modeling to estimate the worst-case power density from AT&T antennas
to document potential MPE levels at this location and ensure that site control measures are adequate to
meet FCC and OSHA requirements, as well as AT&T’s corporate RF safety policies. As presented in the
preceding sections, based on worst-case predictive modeling, there are no modeled exposures on any
accessible utility line level and ground walking/working surface related to ATT’s proposed antennas that
exceed the FCC’s occupational and/or general public exposure limits at this site.
Signage is recommended at the site as presented in Section 4.0 and Appendix B. Posting of the signage
brings the site into compliance with FCC rules and regulations and AT&T’s corporate RF safety policies.
6.0 LIMITATIONS
This report was prepared for the use of AT&T Mobility, LLC to meet requirements outlined in AT&T’s
corporate RF safety guidelines. It was performed in accordance with generally accepted practices of
other consultants undertaking similar studies at the same time and in the same locale under like
circumstances. The conclusions provided by EBI are based solely on the information provided by the
client. The observations in this report are valid on the date of the investigation. Any additional
information that becomes available concerning the site should be provided to EBI so that our
conclusions may be revised and modified, if necessary. This report has been prepared in accordance
with Standard Conditions for Engagement and authorized proposal, both of which are integral parts of
this report. No other warranty, expressed or implied, is made.
PA2019-077
RF-EME Compliance Report USID No. 213733 Site No. CSTAM 2
EBI Project No. 6219000755 190 Newport Center Drive, Newport Beach, California
EBI Consulting 21 B Street Burlington, MA 01803 1.800.786.2346
Appendix A
Personnel Certifications
PA2019-077
RF-EME Compliance Report USID No. 213733 Site No. CSTAM 2
EBI Project No. 6219000755 190 Newport Center Drive, Newport Beach, California
EBI Consulting 21 B Street Burlington, MA 01803 1.800.786.2346
Preparer Certification
I, Linda Bajraktari, state that:
I am an employee of EnviroBusiness Inc. (d/b/a EBI Consulting), which provides RF-EME safety
and compliance services to the wireless communications industry.
I have successfully completed RF-EME safety training, and I am aware of the potential hazards
from RF-EME and would be classified “occupational” under the FCC regulations.
I am familiar with the FCC rules and regulations as well as OSHA regulations both in general and
as they apply to RF-EME exposure.
I have been trained in on the procedures outlined in AT&T’s RF Exposure: Responsibilities,
Procedures & Guidelines document (dated October 28, 2014) and on RF-EME modeling using
RoofView® modeling software.
I have reviewed the data provided by the client and incorporated it into this Site Compliance
Report such that the information contained in this report is true and accurate to the best of my
knowledge.
PA2019-077
PA2019-077
RF-EME Compliance Report USID No. 213733 Site No. CSTAM 2
EBI Project No. 6219000755 190 Newport Center Drive, Newport Beach, California
EBI Consulting 21 B Street Burlington, MA 01803 1.800.786.2346
Appendix B
Compliance/Signage Plan
PA2019-077
At the nearest walking/working surfaces to the AT&T antennas, the maximum power density generated by the AT&T antennas is approximately 17.30 percent of the FCC’s general public limit (3.46 percent of the FCC’s occupational limit). The composite exposure level from all carriers on this site is approximately 17.30 percent of the FCC’s general public limit (3.46 percent of the FCC’s occupational limit) at the nearest walking/working surface to each antenna. Based on worst-case predictive modeling, there are no areas at ground/street level related to the proposed AT&T antennas that exceed the FCC’s occupational or general public exposure limits at this site. At ground/street level, the maximum power density generated by the antennas is approximately 0.5 percent of the FCC’s general public limit (0.1 percent of the FCC’s occupational limit). ATT Sector A Ground Level Blue NOTICE decals posted around the bottom of the radome of the antenna. Existing Building Antenna Face, Utility Level, and Ground Level Compliance/Signage Plan Facility Operator: AT&T Mobility Site Name: CRAN_RLOS_CSTAM_002 AT&T Site Number: CSTAM 2 USID Number: 213733 Report Date: 03-14-19 PA2019-077