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Environmental Checklist and City of Pleasanton–10x Genomics Project
<br />Environmental Evaluation Initial Study/Mitigated Negative Declaration
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<br />72 FirstCarbon Solutions
<br />Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480024/ISMND/wp/21480024 10x Genomics Project Full Screencheck ISMND.docx
<br />hazards and implementation of soils engineering and construction standards to minimize danger
<br />from earthquakes; and Goal 2 Policy 5, which requires an investigation to be conducted for potential
<br />geologic hazards.49
<br />With implementation of the SWPPP and BMPs, and compliance with the applicable regulations as
<br />discussed in this section, the proposed project would not result in substantial erosion or loss of
<br />topsoil. Impacts would be less than significant.
<br />c) Be located on a geologic unit or soil that is unstable, or that would become unstable as a result
<br />of the project, and potentially result in on- or off-site landslide, lateral spreading, subsidence,
<br />liquefaction or collapse?
<br />Less than significant impact with mitigation incorporated.
<br />Landslide
<br />As discussed in Impact(a), above, the project site is not located in an area that is at risk of
<br />earthquake-induced landslides.50 Therefore, the proposed project would not result in on-site or off-
<br />site landslides.
<br />Lateral Spreading
<br />Lateral spreading is lateral ground movement, with some vertical component, as a result of
<br />liquefaction. In effect, the soil rides on top of the liquefied layer. Lateral spreading can occur on
<br />relatively flat sites with slopes less than 2 percent, under certain circumstances, and can cause
<br />ground cracking and settlement. Lateral spreading is generally the most pervasive and damaging
<br />type of liquefaction-induced ground failure generated by earthquakes. Because the zones of
<br />potentially liquefiable soil are thin and not continuous, the potential for lateral spreading at the site
<br />is considered low.
<br />Subsidence
<br />Subsidence is a geologic hazard that involves unnatural movement of land or earth, which results in
<br />sinking or settling of the ground surface.51 According to the Geotechnical Investigation, the potential
<br />for ground surface settlement at the project site is considered low.52
<br />Liquefaction
<br />As discussed in Impact(a), above, some of the soils between about 30 and 50 feet BGS are
<br />susceptible to liquefaction and liquefaction-induced settlement during a strong earthquake.
<br />Implementation of MM GEO-1 would reduce impacts associated with seismic-related ground failure
<br />and liquefaction to less than significant.
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<br />49 City of Pleasanton. 2009. Pleasanton General Plan 2005-2025, Chapter 5, Public Safety Element. Website:
<br />https://www.cityofpleasantonca.gov/civicax/filebank/blobdload.aspx?BlobID=23899. Accessed February 2, 2021.
<br />50 Forrest, T.M., Gildea, P., Flessas, M.G. 2020. Geotechnical Investigation, 10x Genomics Building 1, 1701 Springdale Avenue,
<br />Pleasanton California, Figure 6, Regional Seismic Hazard Zones Map. December 3.
<br />51 City of Pleasanton. 2009. Pleasanton General Plan 2005-2025, Chapter 5, Public Safety Element. Website:
<br />https://www.cityofpleasantonca.gov/civicax/filebank/blobdload.aspx?BlobID=23899. Accessed February 2, 2021.
<br />52 Forrest, T.M., Gildea, P., Flessas, M.G. 2020. Geotechnical Investigation, 10x Genomics Building 1, 1701 Springdale Avenue,
<br />Pleasanton California, Figure 6, Regional Seismic Hazard Zones Map. December 3.
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