Agenda - 09-03-1996 - VIII-G - Laserfiche WebLink

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JULES COHEN 3 ASSOCIATES, P.C. CoNSULTImG EYGm. Ens 41 WASHINGTON. D.C. 20036 Engineering Statement Page 5 Carrboro, North Carolina Measurement data provided by the electromagnetic monitor were recorded by a Holaday, model M-3320,data logger. The data logger input was calibrated to the electromagnetic monitor output to record data-in units of equivalent plane wave power density, milliwatts per square centimeter. The data logger was programmed to sample the meter output once each second. Data were logged for 20-second sample periods and, at the end of each sample period, the average equivalent plane wave power density encountered over the course of the sample period would have been calculated had the exposure levels been above the sensitivity threshold of the instrument. Then, the calculated average and measured minimum and maximum power density levels for each sample period would have been stored in the data logger memory for later analysis. The extremely low maximum exposure levels present at the site made rigorous analysis of the measurement data unnecessary. On the ground and inside the equipment shelter, the probe was scanned slowly in a vertical plane over an approximate ono-square-meter area to simulate the surface of a human torso. At tight locations inside equipment racks containing cellular transmitters, filters, and combiners, and near transmission lines, there was not enough space to make whole body measurements. These locations simply were probed to ascertain the electromagnetic field strength present Findings The exposure level present at each.survey location was below the sensitivity threshold of the electraaagic monitor. Thus, exposure at the site inside the tower fence and equipment shelter is lee dm 0.17 paces of the MPE for controlled environments, the sensitivity threshold of the insa=ieet for eoa toEW environments. At publicly accessible locations, exposure was less the 0.86 peeomt of the WE for uncontrolled environments, the sensitivity threshold of the instrument for uncontrolled environments. Because of the extremely low electromagnetic field