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DENNY & ASSOCIATES, P.C. 50 <br /> CONSULTING ENGINEERS <br /> WASHINGTON, DC <br /> Engineering Statement Page 7 <br /> KNKA293, Carrboro, North Carolina <br /> There were 22 cellular transmitters installed at the site at the time of the <br /> survey. Taking into account transmitter power output, transmission line loss, and <br /> antenna gain, the effective radiated power of each transmitter is nominally 100 watts. <br /> Assuming simultaneous operation of all transmitters, maximum effective radiated <br /> power at the site is 2200 watts. Given the height above ground level of the transmitting <br /> antennas and the directivity of the transmitting antennas in the vertical plane, the <br /> estimated exposure level six feet above ground level at the tower base is less than <br /> 0.0003 mW/cm?, which is equivalent to 0.01 percent of the MPE for controlled <br /> environments and 0.05 percent of the MPE for uncontrolled environments. <br /> CONCLUSION <br /> RFR exposure levels measured on the ground and inside the equipment <br /> shelter at the KNKA293 site continue to be more than one hundred times less than the <br /> protection guides set forth in ANSI C95.1.1982 and the applicable MPEs set forth in <br /> C95.1-1992. It is extremely likely that a more sensitive electromagnetic monitor would <br /> show the exposure levels to be thousands of times less than the maximums established <br /> by the standards. Further, public access to the site is restricted: first, by a fence <br /> enclosing the self-storage complex within which the cellular site located, and, second, <br /> by a fence enclosing the tower base. <br /> Absent any changes to the transmission system, routine measurement of <br /> electromagnetic field strengths at the I04CA293 site serves no purpose other than to <br /> prove well-established laws of physics by demonstrating that no change in the <br /> transmission system results in no increase in the exposure levels present at the site. <br /> Because exposure levels are a function of effective radiated power, antenna electrical <br /> characteristics, and distance between the antenna and observer, it is quite reasonable <br />