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WSB Engineering Carwash Noise Impact Assessment <br />David Braslau Associates, Inc. Page 12 <br /> <br /> <br /> <br />Figure 5-1 Contributing Sound Sources at Receptor A1 <br />0.0 <br />10.0 <br />20.0 <br />30.0 <br />40.0 <br />50.0 <br />60.0 <br />70.0 <br />32 Hz 63 Hz 125 Hz 250 Hz 500 Hz 1k Hz 2k Hz 4k Hz 8k Hz 16k HzSound Level (dB)Frequency <br />Receptor A1 -Contributing Source Spectra <br />Entry WEST <br />Exit EAST <br />Vac1 <br />Vac4 <br />Vac7 <br />78