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03/22/2000 10:51 612-341-2124 SIRNY ARCHITECTS PAGE 03 <br />�'��-+n �:c c:hUl'J k7tS• �IO PK L!lKFibLMU M�UI. b1G3J1�►5'/G lU JV1G1c4 F'.k��'11�1 <br />drvld i��Y <br />�IIr�N� I��v�'pOr�NO <br />1313 �3Gr1 �CPaC a.�. • aJ�C� :� ` f1'�rrwpo�ll. mn O�Qi414 <br />t�pher+�: �1 �:�1,aC71 • fex: O� Z�'J3'� �672 <br />21 March 2000 <br />Richard L. CtuisuASen <br />Partuers 8t Siruy Architcccs <br />33� Washington Avenue N. Suite 100 <br />Minneapolis� MN SS401 <br />RE: Midland Hill� Country Club - Mitigati�A of Sound from Parlciog Lot <br />Dear Richard: <br />This letter discusses potential impact on sound levels at adjsoent residences from loud <br />voices in the parking lot soutb of the new Club House. It ulso addresses the mitigation of <br />�hese levels through construction of a betm as shown on your grading plan and a higher <br />berm or equivalent solid fence that could provide more noise a«enuacion_ This analysis is <br />hased upon the site layout and grading plan and a City ofRosevilk Address BookMap for <br />the area �anotated with reCeptor (head heig}it) elevations that was provided by Ed Sucoff. <br />provided. For this study, the sound level of a"loud male" voice has been used as the <br />sound source. Thi� u the next to the highest voice et�orc achicvable as notcd in thc <br />scqucncc shown in TABLE 1. The aound I�vel of thi� level is 74 dBA at 3 feet. <br />TABLE 1 <br />ASSUMED SOLIND SOURCE LEVEL FOR ANALYSIS <br />The generaiized layout of the parking lot �ktive to the homes to the east is shown in <br />EXHiBiT 1. The hoaua shown in the exhibit were �clectcd aa being represeatativc of <br />those most likely to impacted by sound from �6a parking lo�. In addition to the clvses� <br />homes, �►2222 and #�2225 were selected since they wero higher than the cloce,ct homes. <br />Also shown in the e�ibit is a possible L•tyouc for a short (4 foot high) fence that could <br />serve as an additional noise barrier on �op of the berm. <br />