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3_Exhibit B
City of Pleasanton
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2020 - PRESENT
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02-22
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3_Exhibit B
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2/16/2023 1:15:46 PM
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2/16/2023 1:06:44 PM
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CITY CLERK
CITY CLERK - TYPE
AGENDA REPORT
DOCUMENT DATE
2/22/2023
DESTRUCT DATE
15Y
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\BOARDS AND COMMISSIONS\PLANNING\AGENDA PACKETS\2020 - PRESENT\2023\02-22
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158850326.2 <br />1/11 <br />Confidential <br />STONERIDGE MALL RESIDENTIAL PROJECT <br />ASSESSMENT OF PROJECT ADHERENCE TO SELECT NOISE MITIGATION <br />MEASURES PER CITY OF PLEASANTON 2012 SEIR MITIGATION <br />MONITORING AND REPORTING PROGRAM (MMRP) <br />Project name Stoneridge Mall Residential Project <br />Project no.1690028201 <br />Recipient Marie Cooper / Perkins Coie LLP <br />Version Final <br />Date October 27, 2022 <br />Prepared by Steve Leiby <br />Checked by Brent Ferren <br />Approved by Brent Ferren <br />Executive Summary <br />The Stoneridge Mall Residential Project (“Project”) would consist of 360 multi-family units in a four- and <br />five-story building with an attached parking structure on a 6-acre site. The Project must comply with the <br />Mitigation Measures (MM) in the City’s 2012 Housing Element Supplemental Environmental Impact Report <br />(SEIR). This report details the study conducted to assess the Project’s adherence to select noise-related <br />mitigation measures from the SEIR. The study assessed the Project’s compliance with Mitigation <br />Measures MM 4.J-2, MM4.J-5c, and MM 4.J-6a. A summary of the results is listed below and detailed <br />within the balance of this report. <br />MM 4.J-2. Assessment of Project’s Potential Construction Vibration Impacts on Neighboring Sensitive <br />Uses. Vibration from on-site construction and construction truck routes were evaluated based on FTA <br />guidelines. Based on the results of the analysis, the vibration limits set in the SEIR were not exceeded at <br />any off-site locations. Therefore, no additional measures are required. <br />MM 4.J-5c. Assessment of Traffic Sound Levels in Outdoor Activity Areas associated with the Project. <br />Traffic sound levels at the outdoor courtyards and rooftop decks were predicted using noise modeling <br />software and road data from the SEIR and California Department of Transportation (“Caltrans”). The <br />analysis found that the limit of Ldn 65 dBA is exceeded for the rooftop deck at the northeast corner of the <br />building. A properly constructed barrier along the north and east sides of the roof deck will result in <br />traffic sounds levels of Ldn 65 dBA or less at the rooftop deck, based on the results of the model. <br />MM 4.J-6a. Assessment of Noise from Stationary (Non-transportation) Sources in the Vicinity of the <br />Project. Noise from non-transportation sources such as rooftop mechanical units and truck activity at a <br />nearby loading dock were evaluated using noise modeling software. Based on the results, sound levels at <br />the property planes and the facades of the Project will not exceed the 60 dBA limit. Therefore, no <br />additional measures are required.
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