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Coand noted that staff had <br />proposed the play structure, to which the applicant has not agreed. <br /> <br />Commissioner Pentin noted that the current plan is significantly different than what was <br />originally sent to the City Council and that the workshop was to identify this new plan <br />which the applicant is putting in front of the Commission. He asked staff if this was <br />correct. <br /> <br />Mr. Pavan said yes. <br /> <br />Mr. Dolan stated dded that it <br />would be fair to say that the applicant made some changes in response to the <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 /> <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 /> <br />Mr. Pavan confirmed that was correct. <br /> <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 /> <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 /> <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 /> <br />Mr. Pavan replied that the windows in those units were not evaluated in the second <br />noise analysis. <br /> <br />inquired what the Municipal Code allows as the loudest at <br />peak interior to a bedroom. <br /> <br />Steve Otto replied that that the General Plan standard for train noise is 50 dBA L in <br />max <br />bedrooms and 55 dBA L in other rooms. <br />max <br /> <br />inquired why then up to 75 dBA is being allowed in the <br />bedroom. <br /> <br />PLANNING COMMISSION MINUTES, July 13, 2011 Page 5 of 21 <br /> <br />