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In response to the Environmental Checklist fox th� <br />Olson Apartment Building Proposal, the following <br />co�ents were received via telephone conversation <br />with Dave Saunders of tfie Department of Ecology, <br />a Noise Specialist: <br />1. The building must be designed to limit noise on inside walls <br />to 35 DBA. This is especially critical in sleeping areas <br />to protect against sleep inierference. <br />2. Walls with windows can be designed to accowrlish this goal <br />(meet the noise requirements) but may necessitate the use <br />of double glaze or thermo—gane windows. The area of <br />vindow exposure is critical and must te considered in the <br />design. . • <br />3. <br />4. <br />Peaks of noise are the main problem, and, the building must <br />be designed to counter peaks of SS DBA.. <br />Reflected noise should be considered in the design (noise <br />reflected from surrounding resi.dential structures). <br />5. An "L" shape design facing Madison would result in a <br />"Canyon Effect" io intensify the noise problem. An "L" shape <br />design facing inward would minimise noise. <br />6. The greater [he building setback the more noise will be <br />minimised. <br />e��ere[t <br />r _.-� <br />� -_-:�:..� <br />� ,� <br />��:r <br />;k;e Evercuer.n <br />CITY OF <br />everett <br />an H��� • a�we>aa <br />N[I1RT. WAfNINGTON <br />•exot <br />T <br />