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exceed an L10 noise level of 85 dBA at a distance of 50 feet. See <br />Section 2801.090 of this Chapter for hours of operation. <br />2801.050. GENERAL TESTING AND MEASUREMENT PROCEDURES. The <br />City Official shall adopt guidelines establishing the test <br />procedures and instrumentation to be utilized, and a copy of such <br />guidelines shall be kept on file in the office of the City <br />Administrator. <br />2801.060. NOISE IMPACT STATEMENTS. The City Official may <br />require noise impact statements in association with, but not <br />limited to, changes in zoning classifications; and planning of a <br />structure or any operation, process, installation or alteration <br />which may be considered as a potential noise source. <br />2801.070. CENTRAL AIR CONDITIONING EQUIPMENT. The City <br />Official must approve the location of new installations of central <br />air conditioning plants or equipment which are exterior to a <br />building. If the City Official determines that it is impossible to <br />position a central air conditioning unit an acceptable distance <br />from adjacent properties, then an alternate method of compliance <br />shall be approved screening or buffering which will meet the <br />requirements of Section 2801.040 of this Chapter. <br />2801.080. SNOWMOBILE REQUIREMENTS. <br />(A) Every snowmobile shall be equipped with a muffler in good <br />working order, good repair, and in constant operation to prevent <br />excessive or unnecessary noise. <br />(B) No snowmobile manufactured on or after June 30, 1970, and <br />before February 1, 1972, shall be sold or offered for sale unless <br />it is equipped with a muffler which limits engine noise to not more <br />than 86 decibels on the A-scale (dBA) at 50 feet. <br />(C) No snowmobile manufactured on or after February 1, 1972, <br />shall be sold or offered for sale unless it is equipped with a <br />muffler which limits engine noise to not more than 82 decibels on <br />the A-scale (dBA) at 50 feet. <br />(D) No snowmobile manufactured on or after April 1, 1975, for <br />sale in Minnesota, except a snowmobile designed for competition <br />purposes only, shall be sold or offered for sale unless it is so <br />equipped that overall noise emission does not exceed 78 decibels on <br />the A-scale at 50 feet. <br />(E) No snowmobile manufactured on or after July 1, 1976, for <br />sale in Minnesota, except a snowmobile designed for competition <br />purpose only, shall be sold or offered for sale unless it is so <br />equipped that overall noise emission does not exceed 73 decibels on <br />the A-scale at 50 feet. <br />2801-3 <br />