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3_Exhibit C_ADDENDUM ONLY
City of Pleasanton
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BOARDS AND COMMISSIONS
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2020 - PRESENT
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2023
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02-22
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3_Exhibit C_ADDENDUM ONLY
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2/17/2023 2:21:14 PM
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CITY CLERK
CITY CLERK - TYPE
AGENDA REPORT
DOCUMENT DATE
12/22/2023
DESTRUCT DATE
15Y
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\BOARDS AND COMMISSIONS\PLANNING\AGENDA PACKETS\2020 - PRESENT\2023\02-22
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City of Pleasanton—Stoneridge Mall Residential Project <br />Section 15183 Checklist/15164 Addendum CEQA Checklist <br /> <br /> <br />FirstCarbon Solutions 65 <br />Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480017/Consistency Checklist/21480017 Stoneridge Mall Residential Project Checklist <br />Addendum_Updated.docx <br />Potential localized and regional impacts would result in exceedances of State or federal standards for <br />nitrogen oxide (NOX), particulate matter (PM10 and PM2.5), or CO. NOX emissions are of concern <br />because of potential health impacts from exposure during both construction and operation and as a <br />precursor in the formation of airborne ozone. PM10 and PM2.5 are of particular concern during <br />construction because of the potential to emit exhaust emissions from the operation of off-road <br />construction equipment and fugitive dust during ground-disturbing activities (construction fugitive <br />dust). CO emissions are of particular concern during project operation because operational CO <br />hotspots are related to increases in on-road vehicle congestion. <br />ROG emissions are also important because of their participation in the formation of ground level <br />ozone. Ozone is a respiratory irritant and an oxidant that increases susceptibility to respiratory <br />infections and can cause substantial damage to vegetation and other materials. Elevated ozone <br />concentrations result in reduced lung function, particularly during vigorous physical activity. This <br />health problem is particularly acute in sensitive receptors such as the sick, elderly, and young <br />children. <br />The cumulative analysis focuses on whether a specific project would result in cumulatively <br />considerable emissions. According to Section 15064(h)(4) of the CEQA Guidelines,2 the existence of <br />significant cumulative impacts caused by other projects alone does not constitute substantial <br />evidence that the proposed project’s incremental effects would be cumulatively considerable. <br />Rather, the determination of cumulative air quality impacts for construction and operational <br />emissions is based on whether the proposed project would result in regional emissions that exceed <br />the BAAQMD regional thresholds of significance for construction and operations on a project level. <br />The thresholds of significance represent the allowable amount of emissions each project can <br />produce without generating a cumulatively considerable contribution to regional air quality impacts. <br />Therefore, a proposed project that would not exceed the BAAQMD thresholds of significance on the <br />project level also would not be considered to result in a cumulatively considerable contribution to <br />these regional air quality impacts. Construction and operational emissions are discussed separately <br />below. <br />Construction Emissions <br />Construction Fugitive Dust <br />As previously mentioned, fugitive dust (PM10 and PM2.5) would be generated during earthmoving <br />activities but would largely remain localized near the project site. <br />The BAAQMD bases the determination of significance for fugitive dust on considering the control <br />measures to be implemented. If all appropriate emissions control measures are implemented for a <br />project as recommended by the BAAQMD, then fugitive dust emissions during construction are not <br />considered significant. <br />In addition, the BAAQMD recommends that all construction projects implement a series of <br />mitigation measures which also include various dust control measures, such as watering disturbed <br />areas daily and reducing vehicle speeds on unpaved roads. Adopted Prior EIR MM 4.B-1a requires <br />the same construction mitigation measures recommended by the BAAQMD to ensure that adequate
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