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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 f 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 / 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. / ( \ 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. /,' 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