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WSB Engineering Carwash Noise Impact Assessment <br />David Braslau Associates, Inc. <br />Table of Contents <br /> <br /> <br /> <br /> <br />1.0 INTRODUCTION ............................................................................................................. 1 <br />1.1. Study Description ............................................................................................................ 1 <br />1.2. Study Objectives .............................................................................................................. 1 <br />2.0 PROPOSED CARWASH AND LOCATION ................................................................. 2 <br />3.0 BACKGROUND SOUND LEVEL MONITORING ...................................................... 5 <br />4.0 SOUND LEVEL MODELING ......................................................................................... 8 <br />4.1. Carwash Sound Sources .................................................................................................. 8 <br />4.2. Model Geometry .............................................................................................................. 8 <br />5.0 PREDICTED LEVELS RELATIVE TO NOISE STANDARDS .............................. 11 <br />6.0 PREDICTED LEVELS RELATIVE TO BACKGROUND ........................................ 13 <br />7.0 NOISE MITGATION OPTIONS .................................................................................. 16 <br />7.1. Minnesota Noise Standards ........................................................................................... 16 <br />7.2. Background Noise Impact ............................................................................................. 16 <br />8.0 FINDING AND CONCLUSIONS .................................................................................. 22 <br /> <br /> <br /> <br /> <br /> <br />65