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3_Exhibit C_ADDENDUM ONLY
City of Pleasanton
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2020 - PRESENT
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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 71 <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 />In addition, construction-emitted pollutants would rapidly disperse from the project site. The brief <br />exposure period presented by the proposed project is substantially less than the exposure period <br />typically assumed for the health risk analysis. Further, MM 4.B-1 would be implemented as part of <br />the proposed project, which requires the preparation and submittal of an AQP to the City that <br />demonstrates BAAQMD recommended control measures will minimize risks to sensitive receptors. <br />Therefore, impacts from exposure to construction-generated DPM would be less than significant. <br />Operational Toxic Air Contaminants Exposure <br />The proposed project is not a land use known to generate TACs in substantial quantities; therefore, <br />risks to adjacent receptors from the proposed project would be less than significant. The proposed <br />project would result in the construction of a sensitive receptor land use. <br />In response to Prior EIR MM 4.B-4, an HRA screening was performed for the proposed project.32 The <br />HRA screening evaluated the cumulative health risk at the project site based on BAAQMD <br />guidelines.6 The HRA screening study identified existing and potential stationary sources, highways, <br />major streets, and nearby roadways that are within proximity of the proposed project. The total <br />cancer risk is 35 in 1 million, chronic hazard index (HI) is less than 0.1, and the PM2.5 concentration is <br />0.44 μg/m3, which are all below the BAAQMD thresholds of 100 in a million for cancer risk, 10 for <br />chronic HI, and 0.8 μg/m3 annual average for ambient PM2.5 concentration. The cumulative health <br />risk impacts would be below the BAAQMD cumulative thresholds of significance; thus, the <br />cumulative health risk impacts associated with the proposed project are less than significant. <br />Therefore, development facilitated by the Prior EIR’s General Plan Amendment and Rezonings would <br />not expose sensitive receptors to substantial health risks from DPM and other TACs from mobile and <br />stationary sources, producing less than significant impacts with mitigation. There are no <br />environmental effects that are peculiar to the proposed project or the parcels on which the <br />proposed project would be located. Impacts would be less than significant and the proposed project <br />would not result in a new or more severe adverse impact that was not previously identified in the <br />Prior EIR. <br />d) Other Emissions and Odors <br />Prior EIR Conclusions <br />The Prior EIR concluded that the development facilitated by the then proposed General Plan <br />Amendment and Rezonings could potentially include residential developments that expose <br />occupants to sources of substantial odors affecting a substantial number of people. However, the <br />analysis identified that implementation of General Plan 2005-2025 Policy 8: Minimize unpleasant <br />odors in residential neighborhoods, and Prior EIR MM 4.B-5 would ensure the impacts are reduced <br />to less than significant. <br /> <br />32 Ramboll. 2022. Health risk assessment for the proposed residential receptors at the Stoneridge Mall Residential Project, Pleasanton, <br />California. 2022. Accessed November 1, 2022.
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