HomeMy WebLinkAboutMCUP 08-16; SD06747A CARLSBAD PACIFIC BUILDING - 1ST EXTENSION; RADIO FREQUENCY - ELECTROMAGNETIC ENERGY; 2018-04-06RF Site Audit Site No. SD06747 A
EBI Project No. 6218000789 70 I Palomar Airport Road, Carlsbad, California
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EXECUTIVE SUMMARY
EnviroBusiness Inc. (dba EBI Consulting) has been contracted by T-Mobile to ,conduct radio
frequency electromagnetic (RF-EME) monitoring for T-Mobile Site SD06747A located at 701
Palomar Airport Road in Carlsbad, California to detennlne RF-EME exposure levels from
wireless communications equipment installed at this sita As described in greater detail In
Appendix A of this report, the Federal Communications Commission (FCC) has developed
Maximum Pennlsslble Exposure (MPE) Limits for general population exposures and occupational
exposures. This report summarizes the results of RF-EME monitoring In relation to relevant
FCC RF-EME compliance standards for limiting human exposure to RF-EME flelds.
EBI fleld personnel visited this site G>n April 4, 2018. This report contains a summary of the RF
EME analysis for the site, inchJdlng the following:
■ Antenna Inventory
• Site Photographs
• Site Plan with antenna locations
• ' Graphic representation of on-site monitoring results
\ This document addresses the emissions and signage of T-r--,obile's transmitting facilltles
independently. Emission readings induded in this report are cumulative of all carriers on site.
However, this report does not address other carrier compliance.
STATEMENT OF COMPLIANCE
The results of the RF emissions survey Indicate that the readings do not exceed
applicable FCC MPE limits.
An installation is considered out of compliance with FCC regulations if, in an area that exceeds
the FCC limits, that Installation's contribution Is greater than 5% of the applicable MPE and there
are no mitigation measures in place.
RF Site Audit Site No. SD06747 A
EBI Project No. 6218000789 70 I Palomar Airport Road, Carlsbad, California
To measure the RF emissions within the vicinity, EBI Consulting utilized a NARDA E Field Probe
Model EA 5091 (NBM) Standard Shaped probe SIN 1205, Frequency Range 300 KHz-50 GHz
with NARDA Electromagnetic Survey Meter Model NBM-550 SIN F-0403. Probe calibration was
pelformed on May 20, 2017 with meter calibration performed on May 14, 2017.
RF Site Audit Site Nd. SD06747A
EBI Project No. 6218000789 70 I Palomar Alrport Road, Carlsbad, California
21 Panel SwedcomALP 9209-N 16 5 Verizon
22 Panel Andrew/SBNHH-340 3 Verizon 1D65B
23 Panel Andrew/SBNHH-340 3 Verizon 1D65B
24 Panel SwedcomALP 9209-N 16 5 Verizon
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RF Site Audit, Site No. SD06747 A
EBI Project No. 6218000789 70 I Palomar Airport Road, C~sbad, California
3. PHOTOGRAPHS
The following photographs show the T-Moblle wireless telecommunications facility.
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RF Site Audit , Site No. SD06747 A
EBI Project No. 6218000789 70 I Palomar Airport Road, Carlsbad, California
4. FIELD MEASUREMENTS
4.1 Roof and Ground-Level Measurements
An RF emissions survey was performed at the wireless ~lecommunicatlons facility. This survey
included walking the roof surface and noting the,maxlmum average spatial readings encountered. The
maximum value of the average spatial readings of RF emissions encountered on the roof level was
71.8500% of the Occupational standard. The maximum value of the average spatial readings of RF
emissions encountered at ground level was 1.2055% of the FCC's General Population exposure limit.
See Appendix B for 'the layout depicting the actual readings (% of the FCC MPE Occupational and
General Population standard limits) at various locations at the site. Various measurements were taken
In locations dictated by T-Mobile to Indicate the RF emi,sslons levels that can be encountered by an
individual who gains access to the rooftop and at ground level surrounding the building.
5. CONCLUSION
EBI has prepared this Radlofrequency Emissions Report for telecommunications equipment installed at
the site located at 70 I Palomar Airport Road In Carlsbad, California.
The results of the RF1 emissions survey indicate that the levels of RF emissions exposure do not
exceed applicable FCC MPE limits. \
The highest level of RF emissions measured on the roof was 71.8500% of the FCC's MPE limits based
on the Occupational standard. Additionally, the highest level of RF emissions measured at ground level
surrounding the building was 1.2055% of the FCC's MPEA controlled/occupational environment
I ' assumes that access to the facility is generally restricted to authorized personnel and facility
management and members of the general public will n6t be able to access the rooftop.
6. 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 EBI are based solely on the Information
collected during the site visit and 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 f"lay 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. •
RF Site Audit Site No. SD06747 A
EBI Project No. 6218000789 70 I Palomar Airport Road, Carlsbad, California
Appendix A
FEDERAL COMMUNICATION COMMISSION (FCC) REQUIREMENTS
The FCC has established Maximum Permissible Exposure (MPE) limits for human exposure to
Radlofrequency 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 ~NSI/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 population/uncontrolled
exposure limits for members of the general public. -,
Occupatlonallcontrolled 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 exposura
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 I population/uncontrolled limits (see below), as long as the exposed person 1has 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 population/uncontrolled exposure limits apply to situations In whtch 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 pptential for exposure or cannot exercise
control over their exposura 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 I and Figure I (below), which are lnduded within the FCC's OET Bulletin 65, summarize
the MPE limits for RF emissions. These limits are designed to provide a substantlal 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). Knofn
as the power density, the FCC has established an occupational MPE of 5 mllliwatts per square
cen'timeter (mW/cm2) and an uncontrolled MPE of I mW/crn2 for equipment operating in. the
1900 MHz frequency range. For the T-Mobi)e equipment operating at 700 MHz, the FCC's
occupation;u MPE Is 2.33 mW/cm2 and an uncontrolled MPE of 0.47 mW/cm2. These limits are
considered protective of these populations.
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RF Site Audit Site No. SD06747A
EBI Project No. 6218000789 70 I Palomar Airport Road, Carlsbad, California
Personal Wireless Service Approximate Occupational Public MPE Frequency MPE
Personal Communication (PCS) 1,950 MHz 5.00 mW/cm' 1.00 mW/cm'
Cellular Telephone 870 MHz 2.90 mW/cm' 0.58 mW/cm'
Specialized Mobile Radio 855 MHz 2.85 mW/cm' 0.57 mW/cm'
Long Term Evolution (L TE) 700 MHz 2.33 mW/cm' 0.47 mW/cm'
Most Restrictive Freq, Range 30-300 MHz 1.00 mW/cm1 0.20 mW/cm'
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.
Personal Communication (PCS) facilities used by T-Mobile in this area operate within a
frequency range of 700-2100 MHz. Facilities typically consist of: I) 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 fr:ont of the antennas.
RF Site Audit Site No. SD06747 A
· EBI Project No. 6218000789 70 I Palomar Airport Road, Carlsbad, California
Appendix B
Field Measurements and Site Layout