HomeMy WebLinkAbout5. Radio Frequency - Electromagnetic Energy (RF-EME) Compliance Report (Jun 21 2021)RADIO FREQUENCY - ELECTROMAGNETIC ENERGY (RF-EME)
COMPLIANCE REPORT
Report Type: Antenna Modification/Theoretical
Site ID: SV80972A
Site Name: SN45XC088-S HIGUERA & SOUTH ROAD
Address: 222 Elks Lane San Luis Obispo, CA 93401
Date of Calculation: June 21, 2021
Date of Report: June 21, 2021
Latitude: 35.26277778 N
Longitude: -120.67250000 W
Prepared By:
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Site ID: SV80972A
Table of Contents
1.0 Executive Summary………………………………………………………………. 3
2.0 MPE Calculation………………………………………………………………….. 5
3.0 Antenna Inventory……………………………………………………………….. 6
4.0 Signage At The Facility Identifying All WTS Equipment……………………… 7
5.0 Statement On Who Produced This Report And Qualifications…………………. 7
6.0 Safety Recommendations………………………………………………………….. 8
7.0 Federal Communications Commission (FCC) Requirements……………………. 9
8.0 Limitations………………………………………………………………………. 11
9.0 Compliance Measures…………………………………………..………………… 12
10.0 Summary And Conclusions………………………………………………………. 14
Appendix A Certifications
Appendix B RoofView® Export File
Appendix C Statement of Limiting Conditions
Appendix D Rules & Regulations
Appendix E General Safety Recommendations
Appendix F References
Appendix G Proprietary Statement
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Site ID: SV80972A
1.0 EXECUTIVE SUMMARY / REPORT SUMMARY
Purpose of Report
Global Technology Associates (GTA) has been contracted by T-Mobile to conduct radio frequency electromagnetic (RF-
EME) modeling for T-Mobile site SV80972A located at 222 Elks Lane San Luis Obispo, CA 93401 to determine RF-EME
exposure levels from existing and proposed T-Mobile wireless communications equipment at this site.
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.
As described in greater detail in Section 7.0 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.
T-Mobile Site Summary
Site ID SV80972A Street Address 222 Elks Lane
Site Name SN45XC088-S HIGUERA &
SOUTH ROAD City, State, Zip San Luis Obispo, CA 93401
Site Type mono eucalyptus Latitude 35.26277778 N
Classification occupational Longitude -120.67250000 W
Access Restrictions controlled Access Type locked gate
Site Description all the antennas are mounted on the mono eucalyptus, the area is surrounded by
wood fence
Max Predictive RF-EME at T-Mobile Facility (Occupational) 3.4% of FCC’s occupational limit at ground level
Max Predictive RF-EME at Ground Level (General Public) 16.8% of FCC’S general public limit
Predictive RF-EME Analysis at T-Mobile Facility In Compliance With FCC Rules & Regulations
Upon Completion of the Recommendations
A result of over 100% does not make a site out of compliance with FCC guidelines. For predicted EME over 100% of the
applicable FCC limit, further remediation (e.g. signage and/or barriers preventing access) is required to consider the site
compliant. Areas exceeding the FCC limit are presented with the barriers and appropriate signages. Accessible areas
outside the demarcated are the safety zones that have predicted EME values below the FCC's limits. Installation of the
recommended mitigation or remediation measures brings the site into compliance. The predictions models antennas as if
they are operating at full power, and this assumption yields a worst case scenario with more conservative results. On-site
measurements may yield different results, as antennas do not always operate at full capacity.
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Site ID: SV80972A
Methodology
The site to be determined as the compliance is based on theoretical modeling using RoofView® modeling tool,
appropriate RF signage placement recommendations, proposed antenna inventory as provided by T-Mobile in the
construction drawings and the type & level of restricted access to the antennas at the site.
Compliance Statement
T-Mobile's operation at 222 Elks Lane San Luis Obispo, CA 93401 will comply with FCC rules and regulations upon
completion of recommendations that includes the installation of appropriate RF Safety Signages and/or Barriers as
described in Section 9 and Appendix B.
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Site ID: SV80972A
2.0 MPE CALCULATIONS
For this MPE predictive analysis, GTA considered the area around the accessible areas of the T-Mobile antennas on the
site to determine EME field strength levels with respect to the FCC’s human exposure limits. Further GTA has identified
any areas with higher levels exceeding FCC MPE limits and then determined spatially averaged field levels in areas with
highest fields.
GTA has utilized computer generated modeling software RoofView® 4.15 to generate the compliance report.
Modeling & Input Assumptions
In this Site Compliance Report, it is assumed that
All antennas are operating at full power at all times.
The Antenna Inventory Table (Section 3) shows all transmitting antennas at the site.
A 100 % duty cycle and maximum radiated power for each antenna is assumed unless T-Mobile has specified
otherwise.
Obstructions like (screens, trees, buildings etc.) that would normally attenuate the signal are not taken into
account.
GTA obtained information used in this Compliance Report from T-Mobile which is considered reliable and
believes them to be true and correct.
Due to the complexity of some wireless sites, GTA performed this analysis and created this report utilizing best
industry practices and due diligence. The scales and the determinations are based on the A&E drawings provided
by T-Mobile.
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Site ID: SV80972A
3.0 ANTENNA INVENTORY
ID Technology Frequency (MHz) Input Power (Watts) ERP (Watts) Antenna Make Antenna Model Antenna Gain (dBd) Azimuth (°) Bottom of ANT from Ground (ft) S1A1 L600 600.00000 80.0000 1853.9157 RFS APXVAALL24_43-U-NA20 13.65 10 48.00
S1A1 N600 600.00000 80.0000 1853.9157 RFS APXVAALL24_43-U-NA20 13.65 10 48.00
S1A1 L700 700.00000 40.0000 970.6440 RFS APXVAALL24_43-U-NA20 13.85 10 48.00
S1A1 G1900 1900.00000 40.0000 1807.4238 RFS APXVAALL24_43-U-NA20 16.55 10 48.00
S1A1 L1900 1900.00000 80.0000 3614.8476 RFS APXVAALL24_43-U-NA20 16.55 10 48.00
S1A1 L2100 2100.00000 160.0000 7927.2031 RFS APXVAALL24_43-U-NA20 16.95 10 48.00
S1A4 L2500 2500.00000 120.0000 22089.2640 ERICSSON AIR6449 B41 22.65 10 50.62
S1A4 N2500 2500.00000 200.0000 36815.4400 ERICSSON AIR6449 B41 22.65 10 50.62
S2A2 L600 600.00000 80.0000 1853.9157 RFS APXVAALL24_43-U-NA20 13.65 130 48.00
S2A2 N600 600.00000 80.0000 1853.9157 RFS APXVAALL24_43-U-NA20 13.65 130 48.00
S2A2 L700 700.00000 40.0000 970.6440 RFS APXVAALL24_43-U-NA20 13.85 130 48.00
S2A2 G1900 1900.00000 40.0000 1807.4238 RFS APXVAALL24_43-U-NA20 16.55 130 48.00
S2A2 L1900 1900.00000 80.0000 3614.8476 RFS APXVAALL24_43-U-NA20 16.55 130 48.00
S2A2 L2100 2100.00000 160.0000 7927.2031 RFS APXVAALL24_43-U-NA20 16.95 130 48.00
S2A5 L2500 2500.00000 120.0000 22089.2640 ERICSSON AIR6449 B41 22.65 130 50.62
S2A5 N2500 2500.00000 200.0000 36815.4400 ERICSSON AIR6449 B41 22.65 130 50.62
S3A3 L600 600.00000 80.0000 1853.9157 RFS APXVAALL24_43-U-NA20 13.65 250 48.00
S3A3 N600 600.00000 80.0000 1853.9157 RFS APXVAALL24_43-U-NA20 13.65 250 48.00
S3A3 L700 700.00000 40.0000 970.6440 RFS APXVAALL24_43-U-NA20 13.85 250 48.00
S3A3 G1900 1900.00000 40.0000 1807.4238 RFS APXVAALL24_43-U-NA20 16.55 250 48.00
S3A3 L1900 1900.00000 80.0000 3614.8476 RFS APXVAALL24_43-U-NA20 16.55 250 48.00
S3A3 L2100 2100.00000 160.0000 7927.2031 RFS APXVAALL24_43-U-NA20 16.95 250 48.00
S3A6 L2500 2500.00000 120.0000 22089.2640 ERICSSON AIR6449 B41 22.65 250 50.62
S3A6 N2500 2500.00000 200.0000 36815.4400 ERICSSON AIR6449 B41 22.65 250 50.62
Table 3.1 Antenna Inventory
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Site ID: SV80972A
4.0 SIGNAGE AT THE FACILITY IDENTIFYING ALL WTS EQUIPMENT AND SAFETY PRECAUTIONS FOR PEOPLE
NEARING THE EQUIPMENT AS MAY BE REQUIRED BY THE APPLICABLE FCC ADOPTED STANDARDS
Signs are the primary means for control of access to areas where RF exposure levels may potentially exceed the MPE. It
is recommended that additional signage be installed for the new antennas making people aware of the antennas
locations. The plan should be that there are no exposures above the FCC limits in front of the proposed antennas,
however, wherever the exposures exceed the FCC limits in the front of the proposed antennas, barriers are
recommended to control the areas with the exposures that are above the FCC limits. Additionally, there are areas where
workers elevated above the roof/structure may be exposed to power densities greater than the general public and/or
occupational limits. Workers and the general public should be informed about the presence and locations of antennas
and their associated fields. Access to this site is considered open to public or occupational, based on the controls for
access to the facility/structure, the assumption was made that there were no security mechanisms in place for general
public and security mechanisms in place for the occupational population at the site for purposes of this report unless
otherwise specified specifically by T-Mobile.
5.0 STATEMENT ON WHO PRODUCED THIS REPORT AND QUALIFICATIONS
Please see the certifications attached in Appendix A below.
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Site ID: SV80972A
6.0 SAFETY RECOMMENDATIONS
Occupational Safety and Health Administration (OSHA) Requirements
OSHA requires that those in the Occupational classification must complete training in RF Safety, RF Awareness, and
Utilization of Personal Protective Equipment. OSHA also provides options for Hazard Prevention and Control:
Hazard Prevention Control
Utilization of good equipment
Enact control of hazard areas
Limit exposures
Employ medical surveillance and accident
response
Employ Lockout/Tag out
Utilize personal alarms & protective clothing
Prevent access to hazardous locations
Develop or operate an administrative control
program
RF Signage and Barriers
All RF signs should be obeyed by at all times.
If there are workers in an area with a sign that they do not understand, they can call the NOC Number at 877-611-5868
for guidance.
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Site ID: SV80972A
7.0 FEDERAL COMMUNICATIONS COMMISSION (FCC) REQUIREMENTS
The FCC has established Maximum Permissible Exposure (MPE) limits for human exposure to Radio frequency
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.
Figure 7-1
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Site ID: SV80972A
Table 7-1 and Figure 7-2 (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 T-Mobile equipment operating at 800
MHz, the FCC’s occupational MPE is 2.66 mW/cm2 and an uncontrolled MPE of 0.53 mW/cm2. These limits are
considered protective of these populations.
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 6|4 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
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 6|4 1.63 (100)*30
1.34-30 1842/f 2.19/f (180/f 2)*30
30-300 27.5 0.073 0.2 30
300-1,500 ----f/1,500 30
1,500-100,000 ----1.0 30
(A) Limits for Occupational/Controlled Exposure
(B) Limits for General Public/Uncontrolled Exposure
Table 7-1
Figure 7-2
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Site ID: SV80972A
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 Communication (PCS) facilities used by T-Mobile in this area operate within a frequency range of 600-2500 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.
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
100% of the applicable MPE must participate in mitigating these RF hazards.
8.0 LIMITATIONS
This report was prepared for the use of T-Mobile. 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 GTA are based solely on the information provided by T-Mobile. 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 GTA 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.
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
Most Restrictive Freq. Range 30-300 MHz 1.00 mW/cm2 0.20 mW/cm2
Table 7-2
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Site ID: SV80972A
9.0 COMPLIANCE MEASURES
The site needs the following mitigation and/or compliance plan.
The compliance determination is based on theoretical modeling, RF signage placement recommendations, proposed
antenna inventory and the level of restricted access to the antennas at the site. At the time of our analysis, T-Mobile will
be complaint with the FCC rules and regulations, as described in OET Bulletin 65 upon implementation of below
remediation and/or compliance recommendations.
On mono eucalyptus :
CAUTION: - The table above represents EVERY compliance item that MUST be implemented by the carrier at the site location;
please see the Site Plan shown in diagram 1.
It is recommended to have periodic inspections of the components that are involved in radiation of RF energy. Periodic
Electromagnetic Emission (EME) measurement should be conducted to reevaluate the RF radiation level at this site.
Recommendations
for Site
Compliance
GUIDELINES NOTICE CAUTION WARNING NOC INFO BARRIER & CHAIN
Access Point(s) ☒ ☐ ☐ ☐ ☒ ☐ barriers & chains
Sector Alpha ☐ ☒ ☐ ☐ ☐ ☐ barriers & chains
Sector Beta ☐ ☒ ☐ ☐ ☐ ☐ barriers & chains
Sector Gamma ☐ ☒ ☐ ☐ ☐ ☐ barriers & chains
Equipment ☐ ☐ ☐ ☐ ☒ ☐ barriers & chains
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Site ID: SV80972A
Diagram 1: Site Scale Plan
Standard uses ‘exposure limits of 1.0 mW/cm2 for occupational and 5.0 mW/cm2 for non-occupational’
Barrier & Chain
T-Mobile Antennas
ENTRY Important Notes
SV80972A
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Site ID: SV80972A
10.0 SUMMARY AND CONCLUSIONS
GTA has prepared this Radiofrequency Emissions Compliance Report for the proposed T-Mobile telecommunications
equipment at the site located at 222 Elks Lane San Luis Obispo, CA 93401.
GTA has conducted theoretical modeling to estimate the worst-case power density from T-Mobile antennas to document
potential MPE levels at this location and ensure that site control measures are adequate to meet FCC and OSHA
requirements.
As presented in the preceding sections, based on worst-case predictive modeling, there are no modeled exposures on
any accessible ground-level walking/working surface related to proposed equipment in the area that exceed the FCC’s
occupational exposure limits at this site. Any of the modeled exposure areas exceeding the occupational limits need to
follow the mitigation/compliance plan proposed in the report in order to bring the T-Mobile antennas to compliance. As
such, the proposed T-Mobile project is in compliance with FCC rules and regulations. Posting of the signages and the
recommendations presented in Appendix B brings the site into compliance with FCC rules and regulations.
At ground-level the anticipated maximum predictive RF-EME at T-Mobile facility will be 3.4% of FCC’s occupational
limit. This was determined through calculations along a radial from each sector taking full power values into account as
well as actual vertical plane antenna gain values per the manufacturer-supplied specifications for gain. Based on worst-
case predictive modeling, there are no areas at ground level related to the proposed antennas that exceed the FCC's
occupational or general public exposure limits at this site. At ground level, the maximum power density generated by
the antennas is approximately 16.8% of FCC’S general public limit (3.36% of the FCC's occupational limit).
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.
Modeling indicates that there will be no accessible areas on the walking/working surfaces at the ground-level in front of
the T-Mobile antennas that may exceed the FCC standards for general population and/or occupational exposure after
implementation of mitigation measures. To reduce the risk of exposure and/or injury, GTA recommends that access to
the mono eucalyptus or areas associated with the active antenna installation or mitigation measures are restricted and
secured where possible.
In order to alert any workers potentially accessing the site, a blue Notice sign and a yellow Guidelines sign are
recommended for installation at the access to the rooftop/structure.
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Site ID: SV80972A
APPENDIX A
Certifications
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APPENDIX B
RoofView® Export File &
Area Plot When Applicable/Pertinent
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Site ID: SV80972A
Predictive T-Mobile’s RF contribution at nearest walking level from mono eucalyptus for the
occupational standards
0 - 100 %
100 - 500 %
500 - 5000 %
Above 5000 %
(Safe Zone)
(Moderate Zone)
(High Zone)
(Over Zone)Standard uses ‘exposure limits of 1.0 mW/cm2 for occupational and 5.0 mW/cm2 for non-occupational’
Barrier & Chain
T-Mobile Antennas
ENTRY Important Notes
SV80972A
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Site ID: SV80972A
Predictive T-Mobile’s RF contribution at ground level for the
public standards
0 - 100 %
100 - 500 %
500 - 5000 %
Above 5000 %
(Safe Zone)
(Moderate Zone)
(High Zone)
(Over Zone)Standard uses ‘exposure limits of 1.0 mW/cm2 for occupational and 5.0 mW/cm2 for non-occupational’
Barrier & Chain
T-Mobile Antennas
ENTRY Important Notes
SV80972A
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Site ID: SV80972A
APPENDIX C
Statement of Limiting Conditions
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Site ID: SV80972A
STATEMENT OF LIMITING CONDITIONS
GTA has run MPE predictive analysis with regards to the RF environment. For MPE Predictive analysis, GTA considered the
accessible areas of the site to determine approximate field strength levels and to identify any areas with higher levels
exceeding FCC MPE GPL limits and then determined spatially averaged field levels in areas with highest fields and
documented in report. GTA will not be responsible for matters of a legal nature that affect the site of property.
Due to the complexity of some wireless sites, GTA performed this analysis and created this report utilizing best industry
practices and due diligence. GTA cannot be held accountable of responsible for anomalies or discrepancies due to actual
site conditions (i.e., mislabeling of antennas or equipment, inaccessible cable runs, inaccessible antennas or equipment,
etc.) or information or data supplied by TMO, the site manager, or their affiliates, subcontractors or assigns.
GTA has provided computer generated model(s) in this Site Compliance Report to show approximate dimensions of the
site, and the model is included to assist the reader of the compliance report to visualize the site area, and to provide
supporting documentation for GTA’s recommendations.
GTA may note in the Site Compliance Report any adverse physical conditions, such as needed repairs, observed during the
analysis of the subject property or that VERDOR became aware of during the normal research involved in performing this
predictive study. GTA will not be responsible for any such conditions that do exist or for any engineering or testing that
might be required to discover whether such conditions exist. Because GTA is not an expert in the field of mechanical
engineering or building maintenance, the Site Compliance Report must not be considered a structural or physical
engineering report. The RF MPE is valid and accurate for RF Emitters data provided by TMO at the time predictive study
analysis. GTA does not take any responsibility for FCC compliance of the site if the radio conditions have changed after
that time.
GTA obtained information used in this Site Compliance Report from sources that GTA considers reliable and believes them
to be true and correct. GTA does not assume any responsibility for the accuracy of such items that were furnished by
other parties. When conflicts in information occur between analysis provided by a second party and analysis done by GTA,
the data confirmed by the customer will be used.
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Site ID: SV80972A
APPENDIX D
Rules & Regulations
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EXPLANATION OF APPLICABLE RULES AND REGULATIONS
FCC has set forth guidelines in OET Bulletin 65 for human exposure to radio frequency electromagnetic fields. Currently,
there are two different levels of MPE – General Public MPE and Occupational MPE. An individual classified as
Occupational can be defined as an individual who has received appropriate RF training and meets the conditions outlined
below. General Public is defined as anyone who does not meet the conditions of being Occupational. FCC Rules and
Regulations define compliance in terms of total exposure to total RF energy, regardless of location of or proximity to the
sources of energy.
It is the responsibility of all licensees to ensure these guidelines are maintained at all times. It is the ongoing responsibility
of all licensees composing the site to maintain ongoing compliance with FCC rules and regulations.
A building owner or site manager can use this report as part of an overall RF Health and Safety Policy. It is important for
building owners/site managers to identify areas in excess of the General Population MPE and ensure that only persons
qualified as Occupational are granted access to those areas.
Occupational Environment Explained
The FCC definition of Occupational exposure limits apply to persons who:
are exposed to RF energy as a consequence of their employment;
have been made aware of the possibility of exposure; and
can exercise control over their exposure.
FCC guidelines go further to state that persons must complete RF Safety Awareness training and must be trained in the
use of appropriate personal protective equipment.
In order to consider this site an Occupational Environment, the site must be controlled to prevent access by any
individuals classified as the General Public. Compliance is also maintained when any non-occupational individuals (the
General Public) are prevented from accessing areas indicated as Red or Yellow in the attached RF Emissions diagram. In
addition, a person must be aware of the RF environment into which they are entering. This can be accomplished by an RF
Safety Awareness class, and by appropriate written documentation such as this Site Compliance Report.
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APPENDIX E
General Safety Recommendations
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Site ID: SV80972A
The following are general recommendations appropriate for any site with accessible areas in excess of 100% General
Public MPE. These recommendations are not specific to this site. These are safety recommendations appropriate for
typical site management, building management, and other tenant operations.
1. All individuals needing access to the main site should be instructed to read and obey all posted placards and signs.
2. The site should be routinely inspected and this or similar report updated with the addition of any antennas or upon
any changes to the RF environment including:
adding new antennas that may have been located on the site.
removing of any existing antennas
changes in the radiating power or number of RF emitters
3. Post the appropriate NOTICE, CAUTION & WARNING sign at the main site access point(s) and other locations as
required. Note: Please refer to RF Exposure diagrams, to inform everyone who has access to this site that beyond
posted signs there may be levels in excess of the limits prescribed by the FCC. The signs below are example of signs
meeting FCC guidelines.
4. Ensure that the site door remains locked (or appropriately controlled) to deny access to the general public if deemed
as policy by the building/site owner.
5. For a General Public environment, the three-color levels identified in measured RF emission diagram can be
interpreted in the following manner:
Green represents areas predicted to be greater than or equal to 0% and less than 100% of the MPE General Public
limits. The General Public can access these areas with no restrictions.
Yellow represents areas predicted to be greater than or equal to 100% and lesser than 500% of the MPE General
Public limits. The General Public should be restricted from accessing these areas.
Red represents areas predicted to be greater than or equal to 500% of the MPE General Public limits. The General
Public Should be restricted from accessing these areas.
6. For an Occupational environment, the three-color levels identified in a measured RF emission diagram can be
interpreted in the following manner:
Green represents areas predicted to be greater than or equal to 0% and less than 20% of the MPE occupational
limits. Workers can access these areas with no restrictions.
Yellow represents areas predicted to be greater than or equal to 20% and less than 100% of the MPE
occupational limits. Workers can access these areas assuming they have basic understanding of EME awareness
and RF safety procedures and can exercise control over their exposure.
Red represents areas predicted to be greater than or equal to 100% of the MPE occupational limits. Workers can
access these areas assuming they have basic understanding of EME awareness and RF safety procedures and can
exercise control over their exposure. Special procedures may be required such as transmitter power reduction to
minimize workers exposure to EME.
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Site ID: SV80972A
APPENDIX F
References
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SITE SAFETY PROCEDURES
The following items are general safety recommendations that should be administered on a site by site basis as needed by
the carrier.
General Maintenance Work:
Any maintenance personnel required to work immediately in front of antennas and / or in areas indicated as above 100%
of the Occupational MPE limits should coordinate with the wireless operator to disable transmitters during their work
activities.
Training and Qualification Verification:
All personnel accessing areas indicated as exceeding the General Population MPE limits should have a basic understanding
of EME awareness and RF Safety procedures when working around transmitting antennas. Awareness training increases a
workers understanding of potential RF exposure scenarios. Awareness can be achieved in a number of ways (e.g. videos,
formal classroom lecture or internet based courses).
Physical Access Control:
Access restrictions to transmitting antennas locations is the primary element in a site safety plan. Examples of access
restrictions are as follows:
Locked door or gate
Alarmed door
Locked ladder access
Restrictive Barrier at antenna locations (e.g. Chain link with posted RF Sign)
RF Signage:
Everyone should obey all posted signs at all times. RF signs play an important role in properly warning a worker prior to
entering into a potential RF Exposure area.
Assume all antennas are active:
Due to the nature of telecommunication transmissions, an antenna transmits intermittently. Always assume an antenna is
transmitting. Never stop in front of an antenna. If you have to pass by an antenna, move through as quickly and safely as
possible thereby reducing any exposure to a minimum.
Maintain a 3-foot clearance from all antennas:
There is a direct correlation between the strength of an EME field and the distance from the transmitting antenna. The
further away from an antenna, the lower the corresponding EME field is.
RF Emissions Diagram:
Section 7 of this report contains an RF Emissions Diagram that outlines various theoretical MPE/EME simulations and
assumes a duty cycle of 100% for each transmitting antenna at full power. This analysis is a worst-case scenario. This
analysis is based on one of two access control criteria: General Public criteria means that the access to the site is
uncontrolled and anyone can gain access. Occupational criteria means that the access is restricted and only properly
trained individuals can gain access to the antenna locations.
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APPENDIX G
Proprietary Statement
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This report was prepared for the use of T-Mobile to meet requirements specified in T-Mobile’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 same/similar circumstances. The conclusions provided by GTA, are
based solely on the information provided by T-Mobile and all 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 GTA, so that
our conclusions may be revised and modified, if necessary. This report has been prepared in accordance with Standard
Conditions of Engagement and authorized proposal, both of which are integral parts of this report. No other warranty,
expressed or implied, is made. For any report or site specific questions, please contact Compliance Manager at
mpe@gtatelecom.com or (703)-476-8999.