RES 211231 Exhibit A - Laserfiche WebLink

City of Pleasanton–10x Genomics Project Environmental Checklist and Initial Study/Mitigated Negative Declaration Environmental Evaluation FirstCarbon Solutions 71 Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480024/ISMND/wp/21480024 10x Genomics Project Full Screencheck ISMND.docx iv) Landslides? Less than significant impact. According to the General Plan and Geotechnical Investigation, the project site is not located in an area that is at risk of earthquake-induced landslides.46,47 The project site does not contain steep slopes that would be susceptible to landslides. The elevation of the project site ranges from 340 to 350 feet, with a gentle slope to the east, toward the center of the project site.48 Because the proposed project is not located in an area at risk of landslides and does not contain steep slopes and is not adjacent to any steep slopes, the project site is not at risk of landslides. Impacts would be less than significant. b) Result in substantial soil erosion or the loss of topsoil? Less than significant impact. Construction of the proposed project would involve site preparation, grading, and construction activities that would disturb soils on-site and could result in erosion. Because the proposed project would disturb more than 1 acre of land, the proposed project would be required to adhere to the National Pollutant Discharge Elimination System (NPDES) General Construction Permit, which contains requirements for erosion control of exposed soils during construction, including implementation of a Storm Water Pollution Prevention Plan (SWPPP). The SWPPP must identify potential sources of erosion or sedimentation that may be reasonably expected to affect the quality of stormwater discharges, and is also required to identify BMPs to ensure the reduction of these pollutants during stormwater discharges. Prior to construction grading, the project Applicant would file a Notice of Intent to comply with the NPDES General Permit issued to the Regional Water Quality Control Board (RWQCB) and would prepare the SWPPP, including the identification of specific measures to minimize and control construction and post-construction runoff to the maximum extent practicable. BMPs that would be implemented include but are not limited to source control measures such as labeling on-site inlets, landscaping that retains existing vegetation and minimizes pesticides and fertilizers, efficient irrigation system, measures to prevent stormwater runoff from dumpsters and recycling containers, temporary and permanent erosion control measures, use of sediment controls or filtration to remove sediment when dewatering, and pollutant discharge control and prevention measures. Additionally, the proposed project would utilize bioretention areas to treat stormwater. Implementation of these BMPs would ensure that construction and operation of the proposed project do not result in substantial erosion. The proposed project would be required to comply with the CBC and with City Municipal Code requirements pertaining to grading and excavation in effect at the time of project approval. The proposed project would also be required to comply with the policies in the Public Safety Element of the General Plan designed to minimize the risk of soil erosion and further mitigate its effects, including Goal 1 Policy 2, which requires an investigation to be conducted for potential seismic 46 Forrest, T.M., Gildea, P., Flessas, M.G. 2020. Geotechnical Investigation, 10x Genomics Building 1, 1701 Springdale Avenue, Pleasanton California, Figure 6, Regional Seismic Hazard Zones Map. December 3. 47 City of Pleasanton. 2009. Pleasanton General Plan 2005-2025, Chapter 5, Public Safety Element, Figure 5-1, Landslide Zones. Website: https://www.cityofpleasantonca.gov/civicax/filebank/blobdload.aspx?BlobID=23899. Accessed February 2, 2021. 48 Forrest, T.M., Gildea, P., Flessas, M.G. 2020. Geotechnical Investigation, 10x Genomics Building 1, 1701 Springdale Avenue, Pleasanton California. December 3.