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Memo to the Planning Commission/OA 97-7 Page 2 <br /> April 22, 1997 <br /> • The first draft contain a minimum lot size requirement of one acre unless the <br /> underlying zoning was more restrictive. This would have resulted in <br /> situations with a 10 acre minimum lot size requirement for a tower in the <br /> agricultural district. The one acre minimum lot size was kept but the clause <br /> regarding the more restrictive underlying zoning was deleted. <br /> • Illumination <br /> The first draft had a section allowing the placement of lights on a tower if <br /> they were going to be used to illuminate a ball field or parking lot. The way it <br /> was written this could have been done at the discretion of the applicant. The <br /> section was amended so that the lighting would be allowed at the discretion <br /> of the city, not the applicant. <br /> • Tower setbacks <br /> There was also discussion regarding tower setbacks. The first draft included <br /> setbacks from all property lines equal to the height of the tower. The <br /> thinking behind the setback requirement was that it would allow for a <br /> margin of safety should the tower collapse. Other communities deal with <br /> setback in a variety of ways: <br /> • Setback Requirements From Property Lines <br /> Ramsey underlying zone requirements <br /> Carver Co. 50 feet from property lines <br /> Brooklyn Center underlying zone requirements <br /> Bloomington underlying zone requirements & 4 foot setback for every <br /> one foot tower height in residential zones <br /> Richfield underlying zone requirements & setback of 1.5 times the <br /> tower height in residential zones <br /> Chanhassen underlying zone requirements <br /> Rosemount height of tower <br /> For comparison purposes I attached the current setback requirements for the <br /> various districts. Should the Commission recommend that towers comply <br /> with the underlying setback requirements, these would be the setback <br /> requirements. <br /> Currently Sherburne County and the City of Zimmerman have moratoriums <br /> in place and are working on amending their codes to address antenna towers. <br /> APT is currently investigating several sites in the Zimmerman area for <br /> another tower location. The City of Ramsey currently has a moratorium in <br /> • place. The Ramsey Planning Commission considered a proposed ordinance <br /> s:\planning\scott\oa97-7.doc <br />