||Radiofrequency radiation levels and population exposure in urban areas of the Eastern United States /
Athey, T. W. ;
Tell, R. A. ;
Hankin, N. N. ;
Lambdin, D. L. ;
Mantiply, E. D. ;
||Office of Radiation Programs, Silver Spring, MD.
|| Environmental Protection Agency, Office of Radiation Programs, Electromagnetic Radiation Branch ; For sale by the National Technical Information Service,
Radiation dosimetry. ;
Radiation--Physiological effect. ;
Radio frequencies ;
Environmental surveys ;
Statistical data ;
Urban areas ;
Data collection ;
Mathematical models ;
United States ;
New York ;
Environmental health ;
Eastern Region(United States) ;
Environmental Protection Agency ;
Nonionizing radiation ;
New York City(New York) ;
District of Columbia
||Region 9 Library/San Francisco,CA
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||vii, 42 pages : illustrations ; 26 cm.
As part of a program to determine the need for environmental radiofrequency exposure standards, the U.S. Environmental Protection Agency began measuring levels of nonionizing electromagnetic radiation in urban areas of the United States in October 1975. By October 1976 surveys in seven selected cities of the Eastern United States had been completed, namely, Atlanta, Boston, Chicago, Miami, New York, Philadelphia, and Washington, DC. This report describes the measurement system, presents a summary of the environmental measurements, and gives one method of predicting population exposure from the environmental measurements. Environmental data were collected with a van mounted system consisting of antennas, a spectrum analyzer, and a minicomputer. Measurements were made in seven frequency bands between 0.01 and 900 MHz in which pilot studies had indicated that the most significant environmental exposures occur. Environmental data were collected at 193 sites in the seven cities. Values of power density integrated over the frequency range from 55 to 900 MHz generally fall into the range between 0.001 and 1.0 microwatt per square centimeter with a median site value of about 0.01 microwatt per square centimeter. A model was developed which can be used to extrapolate the measured data to other points within the seven cities. Estimates of population exposure were obtained by combining this model with an automated population data base.
Issued May 1978. Includes bibliographical references.