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- 4 - <br /> B. Interior Noise Exposures and Noise Levels <br /> • The interior noise exposures in the most impacted living spaces of <br /> dwelling units closest to Stanley Boulevard will be 47 and 50 dB <br /> DNL under existing and future traffic conditions. respectively. <br /> Thus_ noise exposures will be up to 5 d13 in excess of the City of <br /> Pleasanton Noise Element standards. <br /> • The interior noise exposures in the most impacted living spaces of <br /> dwelling units closest to the UPPR/ACE will be up to 61 dB DNL. <br /> Thus. noise exposures will be up to 16 dB in excess of the City of <br /> Pleasanton Noise Element standards. <br /> • The interior noise levels in the most impacted living spaces of <br /> dwelling units closest to the UPRR/ACE tracks will range from 67- <br /> 81 dBA. Thus. the L,,,a, noise levels will be up to 31 dB in excess <br /> of the 50 dBA limit for bedrooms and up to 26 dBA in excess of <br /> the 55 dBA limit for other living spaces. <br /> The findings reveal that exterior and interior noise exposure excesses occur at the <br /> site and mitigation measures will he required. The recommended measures are described <br /> in Section 11 of this report. <br />