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r <br /> RECEIVED <br /> JAN 172012 <br /> CITY OF ORONO <br /> Xcel Energy° <br /> 414 Nicollet Mall <br /> Minneapolis, Minnesota 55401 <br /> January 13, 2012 <br /> To: Persons Interested in the Orono Substation Replacement and <br /> New 115 kV Transmission Line Project, Property Owners, and <br /> Local Officials <br /> RE: NORTHERN STATES POWER COMPANY APPLICATION TO THE MINNESOTA PUBLIC <br /> UTILITIES COMMISSION FOR A ROUTE PERMIT <br /> ORONO SUBSTATION REPLACEMENT AND NEW 115 KV TRANSMISSION LINE PROJECT <br /> NOISE ASSESSMENT REPORT <br /> ALTERNATIVE PERMITTING PROCESS <br /> DOCKET No.E002/TL-11-223 <br /> Dear Interested Persons,Property Owners,and Local Officials: <br /> Enclosed is a copy of the noise assessment prepared for the Orono Substation Replacement and <br /> new 115 kV Transmission Line Project ("Orono Project"). The enclosed noise assessment outlines <br /> the existing ambient sound levels in the vicinity of the existing Orono Substation at 3960 Sixth <br /> Avenue North, Orono,Minnesota. The noise assessment also assesses the potential sound level <br /> impacts on the surrounding residential area of the proposed Orono Substation replacement,which is <br /> part of the Orono Project, and identifies noise mitigation measures. <br /> While the noise assessment indicates that all alternative transformer configurations under <br /> consideration by Xcel Energy would be below the applicable noise standard based upon predicted <br /> and estimated noise levels. Xcel Energy will install a sound wall around the proposed transformer as <br /> noise mitigation for the Project. <br /> Written comments on the noise assessment should be submitted to Administrative Law Judge Eric <br /> L.Lipman by 4:30 p.m.,Tuesday,January 31,2012. Additional information regarding how to <br /> submit these comments is included in the attached Notice of Comment Period from the Minnesota <br /> Department of Commerce,Energy Facility Permitting Staff. <br /> Sincerely, <br /> 5/Joseph G. Sedarski <br /> Joseph G. Sedarski <br /> Senior Permitting Analyst <br />