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<br />permits, an Acoustical <br />Analysis Report shall be <br />submitted to the City of Santa <br />Ana Engineering Department <br />for approval. The Acoustical <br />Analysis Report shall <br />describe the acoustical design <br />features ofthe structures <br />required to satisfy an interior <br />noise level of no more than <br />45 dBA CNEL. In addition, <br />the Acoustical Analysis <br />Report shall contain <br />satisfactory evidence <br />indicating that the sound <br />attenuation measures <br />specified in the approved <br />acoustical reports have been <br />incorporated into the design <br />ofthe project. These <br />measures are applicable to <br />those residential units that <br />directly overlook Macarthur <br />Boulevard and/or the SR-55 <br />Freeway. Such measures <br />could include (but not be <br />limited to): <br /> <br />The inclusion of forced-air <br />ventilation allowing window <br />and doors to remain shut, <br /> <br />The use of acoustic-rated <br />windows and/or sliding door <br />assemblies, <br /> <br />A reduction in the physical <br />size of the windows and/or <br />sliding doors, <br /> <br />The use of solid core exterior <br />doors, <br /> <br />The use of gaskets and seals <br />on all external doors and <br />windows, and <br /> <br />8 <br /> <br />75C-146 <br />