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02-03-10-PC
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• An independent RF engineering review to clearly demonstrate why the antenna is not <br />proposed for the City water tower site; <br />• Conformance with all other City regulations; and, <br />• A building permit. <br />In addition to allowing the current configuration of the tower to remain and to provide the <br />possibility of adding new antennas in the future, this CUP amendment is also intended to <br />encourage the placement of antennas on existing towers instead of building new towers. The <br />result would be in keeping with the goal of the Zoning Code to reduce the demand for future <br />new towers in the City. The administrative review process for existing sites is common in <br />other communities, including Shoreview, Roseville, and Minnetonka. If someone were to <br />propose constructing a new antenna tower or placing an antenna on a private building, a CUP <br />and public hearing would still be required along with the administrative review requirements. <br />The CUP process is important for new towers because the potential impacts to the public <br />health, safety, welfare, and aesthetics would need to be fully evaluated. <br />Engineering Review <br />As noted in the first part of this report, the Reiling Tower has undergone a number of <br />changes to the antenna configuration since it was constructed in 1972. The current <br />configuration is not in conformance with the original approval, and the changes were not <br />reviewed by the City. The CUP amendment addresses the non-compliance with the 1972 <br />CUP; however, the City contracted with Ulteig Engineers to have a complete structural <br />review completed since the previous changes were not reviewed by the City (Attachment Q. <br />In summary, the Ulteig report is in good condition and has been properly maintained. <br />The report indicates that there are 30 antennas on the tower (the diplexers are support <br />equipment used by the antennas). Of those, 18 antennas are used by Verizon Wireless for <br />cellular services, two are used by American Messaging to provide pager services, and one <br />dish is used by Nextera to provide business internet services. Staff is working with the <br />property owner to identify the purpose of the remaining nine antennas. The report notes that <br />Clear Wireless is seeking to add six antennas to the tower, which, if done, would put the <br />tower at 97.4 percent capacity in its current condition. The Clear Wireless antennas have not <br />yet been reviewed by the City. If the CUP amendment is approved, Clear Wireless would be <br />subject to the administrative review process to add the antennas. <br />If the nine unidentified antennas can be removed from the tower, additional capacity may be <br />available on the tower in its current condition. According to the supplementary report <br />provided by Ulteig, the tower has the ability to be upgraded in the future to provide <br />additional capacity for antennas. The legs of the tower are only at 62.8 percent capacity and <br />It would be possible provide additional bracing to increase the overall capacity. <br />City of Arden Hills <br />Planning Commission Meeting for February 3, 2010 <br />I Wetro-inet. usl ardenhills 0anningOanning Cases 12009109-023 Reding Tower Zoning and CUP Amendment (Pending)102-03-10 - <br />_PC Report _-_Reding Tower CUP Amendmentl.doc page 6 of 9 <br />
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