RES 211231 Exhibit A - Laserfiche WebLink

Environmental Checklist and City of Pleasanton–10x Genomics Project Environmental Evaluation Initial Study/Mitigated Negative Declaration 88 FirstCarbon Solutions Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480024/ISMND/wp/21480024 10x Genomics Project Full Screencheck ISMND.docx Would the project: a) Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials? Less than significant impact. During the construction of the proposed project, small quantities of hazardous materials such as gasoline, diesel fuel, lubricants for machines, and other petroleum- based products would be used on the project site. Any transport, use, and disposal of hazardous materials would be conducted by an appropriately licensed contractor and in compliance with applicable laws, policies, and programs set forth by federal, State, and local agencies and regulations, including the United States Environmental Protection Agency (EPA) and the City of Pleasanton Municipal Code Chapter 9.21 regarding construction and demolition debris.61 Common hazardous materials such as herbicides, pesticides, solvents, cleaning agents, and similar materials used for building and landscaping maintenance may be utilized on the project site during the operational phase of the proposed project. The use of these materials is regulated by the EPA to minimize harm to people and the environment. Additionally, the use, handling, and storage of hazardous materials are regulated by the Occupational Safety and Health Administration (OSHA) and the California Occupational Safety and Health Administration (Cal/OSHA). The proposed project would be required to comply with the applicable federal, State, and local laws and regulations (e.g., the Resource Conservation and Recovery Act [RCRA], California Hazardous Waste Control Law, and principles prescribed by the California Department of Health Services, Centers for Disease Control and Prevention, and National Institute of Health). Compliance with the applicable hazardous material laws and regulations would ensure that construction and operational impacts associated with hazardous materials would not create a significant hazard to the public or environment. Impacts would be less than significant. b) Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment? Less than significant impact with mitigation incorporated. The project site is developed with parking lots and landscaping. Prior to the development of the project site around 1980, the site was used for agricultural purposes since at least 1939. Based on this historical use, pesticide compounds may be present at residual concentrations in shallow soil. Given that the project site is nearly entirely covered with pavement, residual concentrations of pesticides in soil, if any, would not likely constitute a potentially significant risk to the public or environment. Pursuant to the Phase I ESA, soil sampling would be required in the future as part of any earth moving or off-site soil disposal related to site redevelopment.62 MM HAZ-1 would require soil sampling to evaluate the presence of pesticides in the soil from former agricultural uses. Several dry-cleaning establishments operated at the project site between the early 1980s and 2013. The property deed, dated 1979, specifies that dry cleaning businesses can only clean clothing off- 61 City of Pleasanton. 2009. Pleasanton Municipal Code, Chapter 9.21 Construction and Demolition Debris. Website: https://qcode.us/codes/pleasanton/view.php?topic=9-9_21&showAll=1&frames=on. Accessed January 18, 2021. 62 EKI Environmental & Water. 2020. Phase I Environmental Site Assessment (ESA). September 24.