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which the applicant is putting in front of the Commission. He asked staff if this was <br /> correct. <br /> Mr. Pavan said yes. <br /> Mr. Dolan stated that Commissioner's Blank's summary was accurate. He added that it <br /> would be fair to say that the applicant made some changes in response to the Council's <br /> comments, and the Council then re-directed the application back to the Planning <br /> Commission, who had additional requests, and the only change made since that time <br /> was saving two more trees. <br /> Commissioner Pentin requested clarification that the sound levels presented are based <br /> on the sound inside which anticipated the train and train whistle combined. <br /> Mr. Pavan confirmed that was correct. <br /> Commissioner Pentin noted that Lot 1 has a Window STC Rating of 28. He inquired <br /> what the difference was between STC 28 and STC 46 and if STC 46 was better. <br /> Mr. Pavan said STC stands for Sound Transmission Class which is predicated upon a <br /> variety of factors, including how the various aspects of structural are constructed. He <br /> explained that a sound in and STC 46 window is very involved; for example, a sliding <br /> glass window would have an outside window of two panes with air space in between <br /> and an inside window of either single or dual panes, resulting in 4.5- to 5.5 inch thick <br /> window assembly. <br /> Commissioner Pentin inquired whether the windows of the bedrooms on Lot 2, 3, and 4 <br /> are not affected in the same way. <br /> Mr. Pavan replied that the windows in those units were not evaluated in the second <br /> noise analysis. <br /> Commissioner O'Connor inquired what the Municipal Code allows as the loudest at <br /> peak interior to a bedroom. <br /> Steve Otto replied that that the General Plan standard for train noise is 50 dBA Lmax in <br /> bedrooms and 55 dBA Lmax in other rooms. <br /> Commissioner O'Connor inquired why then up to 75 dBA is being allowed in the <br /> bedroom. <br /> Mr. Dolan replied that a dialogue was actually held about this and the fact that it is <br /> impractical to reach the City's standard when the train goes by on this property or any <br /> other property along the railroad. He added that this is the noise level for people who <br /> live all along the line and that it is just the understanding of a practicality that anyone <br /> cannot, in any reasonable way, mitigate it down to the standard during that short <br /> duration when the train goes by. <br /> EXCERPT: PLANNING COMMISSION MINUTES, July 13, 2011 Page 3 of 10 <br />