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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 />CEQA Checklist Section 15183 Checklist/15164 Addendum <br /> <br /> <br />100 FirstCarbon Solutions <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 />b) Erosion <br />Prior EIR Conclusions <br />The Prior EIR noted that potential sites for rezoning greater than one acre would be required to <br />adhere to the National Pollutant Discharge Elimination System (NPDES) General Construction Permit <br />which contains requirements for erosion control of exposed soils. In addition, the Housing Element <br />found that implementation of nonpoint source control of stormwater runoff through the application <br />of Best Management Practices (BMPs), described in the Storm Water Pollution Prevention Plan <br />(SWPPP) would be required. It was determined that the General Plan Public Safety Element Goal 1, <br />Policy 2, and Goal 2, Policy 5, mitigate and minimize the risk of soil erosion and its effects. Therefore, <br />the Prior EIR found that the impacts related to soil erosion would be less than significant. <br />Analysis of Proposed Project <br />As discussed above, the proposed project would be required to implement General Plan Public <br />Safety Element Goal 1, Policy 2, and Goal 2, Policy 5 to mitigate and minimize the risk of soil erosion <br />and its effects. In addition, the proposed project would adhere to the NPDES General Construction <br />Permit which contains requirements for erosion control of exposed soils, through the application of <br />BMPs from the project-specific SWPPP. Impacts would continue to be less than significant, and no <br />mitigation is necessary, consistent with the Prior EIR. There are no proposed changes, new <br />circumstances, or new information that would cause new or more severe impacts. <br />Therefore, there are no environmental effects that are peculiar to the proposed project or the <br />parcels on which the proposed project would be located. Impacts would be less than significant and <br />the proposed project would not result in a new or more severe adverse impact that was not <br />previously identified in the Prior EIR. <br />c) Unstable Soils or Geologic Units <br />Prior EIR Conclusions <br />The Prior EIR concluded that that impacts related to unstable geologic units could occur throughout <br />the City including subsidence, landslides, and liquefaction. Goal 2, Policies 5 and 7 in the General <br />Plan Public Safety Element describes policies that reduce the risk of settlement, subsidence and <br />lateral spreading to a less than significant level. <br />Analysis of Proposed Project <br />As described above, the project site does not contain landslide or liquefaction risks beyond what was <br />concluded in the Prior EIR. Lateral spreading occurs when a continuous layer of soil liquefies at depth <br />and the soil layers above move toward an unsupported face, such as a shoreline slope, or in the <br />direction of a regional slope or gradient. Based on the prevalent cohesive soils located above <br />groundwater and the depth of groundwater, the Geotechnical Engineering Report considered the <br />risk of lateral spreading to be low.50 Consistent with the Prior EIR, the proposed project would be <br /> <br />50 Terracon Consultants. 2014. Geotechnical Engineering Report – 1 Stoneridge Mall Road. October 13.
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