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<br /> y Towers 100 feet or more in height shall be located on the lot so watts, the typical cell site emits 100 watts of power or less,
<br /> that the distance from the base of the rower to any adjoining sometimes as little as 10 in urban areas.
<br /> property line or supporting structure of another cower is a It should be noted chat some ordinances,like Multnomah
<br /> minimum of 100 percent of the proposed cower height.No County's,include provisions that automatically apply more
<br /> variance shall be granted from this minimum setback stringent standards if chose are ever issued by the federal
<br /> requirement.Towers tors than 100 feet in height that cannot government. For more information about the relationship of
<br /> satisfy this l00 percent setback requitement may be approved cellular communications to EMFs,planners may consult the
<br /> by the board,provided that the applicant present a certification
<br /> From a registered engineer char the cower will withstand winds Electromagnetic Energy Association, 1255 23rd Sc..NW,
<br /> of 100 miles per hour. Washington, DC 20037; 202452-1070. EEA is a nonprofit
<br /> group representing corporations and individuals associated with
<br /> Some communities also determine setbacks by what are industries char use non-ionizing EMFs.
<br /> considered acceptable levels of electromagnetic radiation.
<br /> Oldham County;Jefferson County,Colorado; Multnomah For More Information
<br /> County,Oregon;and King County,Washington,all have
<br /> specific provisions related to the electromagnetic fields(Elv(Fs) on EMFs .
<br /> generated by the new cower.TheJefferson County ordinance
<br /> requires a complete non-ionizing electromagnetic radiation t
<br /> (NIER) analysis with every cowir application. o assist local governments in developing
<br /> regtjfations for siting cellular towers,the American
<br /> 1104fromagn "d Holds atrVW Standards Institute has published the
<br /> The health risks associated with EMFs have been the second of the Institute of Electrical and Electronics
<br /> test source of community opposition to the siting of cellular Engineers in IEEE Sandard for Safety Levels with Respect
<br /> greatest ty PP°u to Hrunant Exposure to Radio Frequency Elecoomagrretic
<br /> phone cowers for reasons related to bock perwaai safety and the : ...fiekk 3Az to 300 CHI, 1992(ANSUIEEE C.9S.1.1992
<br /> perceived impact on property values.EMFs are divided into two [Redesit nation as ANSIAEEE C95.1-19911).Anod+er
<br /> basic categories.Ionizing radiation includes X-rays and gamma useful ANSI document is Recommended Pracdce for the
<br /> rays.Non-ionizing radiation, the category to which cellular Measurement of Potentially Hazardous Elecaomagnedc
<br /> communication devices,radio and TV broadcasting antennas, fields-41'and Microwave IANSOEEE 095.3-1992).
<br /> and satellite stations belong,is considered less powerful because Order from American National Standards Institute, 1 t
<br /> it does not strip the electrons from atoms and molecules to form W.42nd Sft New York,NY 10036;212-42-4900.Also
<br /> highly reactive particles known as ions.Instead,it harnesses see the IEEE position statement,'Human Exposure to
<br /> Portable and Mobile Tele-
<br /> phones gem-crated from the vibration of molecules to convey Radiofrequency Fields fat phones and Odw Corset-ic>aara Devim 1992.'
<br /> information or,in the case of microwave ovens or electric T}gtb it predates the advert of cellular communi-
<br /> blankets,to trace hear. cations,a good satuce for general informiaw on the
<br /> Since 1979,scientists have conducted more than 1,000 regulation of radio and television Owen is PAS Report
<br /> studies,some of which have linked non-ionizing 0384,Regulating Radio and TV Towers by Beverly
<br /> electromagnetic field sources to higher incidences of sneer Sookin and Larry Epstein(Chicago.American Planning
<br /> among children living in dose proximity to an EMF source. Association, 1984).For more inkmtation on EMFs in
<br /> However,these studies,often cited in opposition to the siting of I,conwIt PAS Report 043S,El rc
<br /> power lines and communication antennas,have also been found arsd Land-Use Cartrols,by 0
<br /> inconclusive because they were unable to isolate th6r findings Contneily( hi
<br /> to a single EMF source.This is because most homes are1)'
<br /> equipped with a variety of modern appliances that generate -392
<br /> varying EMF levels.No scientific study has shown a specific
<br /> correlation between cancer and the NIER levels genaaud BY a
<br /> cellular communication facility or device.Likewise.no scientific
<br /> research has proven them m be completely safe.
<br /> The cellular radio sysati operates in the 800-900 megahera
<br /> (MHz) ultra high frequwy bs♦ad,formerly used for UHF 01ber Stunaatrd Previslom
<br /> television broadcastin&Guiendy duce are no general federal Colecadea In order to minimize cower proliferation,moss
<br /> guidelines for what is asmidered aocepable public exposure to communities require applicants co exhaust all possible avenues
<br /> radio-frequency-emitted radiation.The U.S.Environmental for sharing space on existing cowers,usually in a section of the
<br /> Protection Agency is developing stash sandards,but,in the ordinance on colocadon or shared use.Factors that determine
<br /> meantime,many communities are relying on the American feasibility include available space on existing towers,the cower
<br /> National Standards Institute fat prefimionally capable radio owners ability to lease space,the towers structural capacity,
<br /> frequency emissions standards for all types of communication radio frequency interference,geographic service area
<br /> cowers(set box on page 3). Many of the ordinances we reviewed requirements,mechanical or electrical incompatibilities.the
<br /> incorporate the ANSI standards into their review protest and comparative costs of caloacion and new construction-and any
<br /> approval requirements.Though coo detailed to list here,they FCC limitations on rower sharing.
<br /> present acceptable levels of NIER exposures from cowers Many ordinances name the regional or state communications
<br /> operating at various frequencies. division responsible for tracking the availability of suitable
<br /> Of all transmitting facilities,cellular cowers typically operate sharing span on towers.iciest regulations should bed of rids
<br /> at the lowest power levels.While a television tower emits up to in tandem with such agencies.In Palm&etch CavtU� ——y
<br /> 5 million watts,and commercial radio stations up to 100,000 cower applicants must send a certified mail announcement to all
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