RES 211231 Exhibit A - Laserfiche WebLink

Environmental Checklist and City of Pleasanton–10x Genomics Project Environmental Evaluation Initial Study/Mitigated Negative Declaration 76 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 the project site, asphalt paving, and construction worker vehicle trips. On-site construction activities would vary depending on the level of construction activity. Long-term, operational GHG emissions would result from project generated vehicular traffic, operation of any landscaping equipment, off-site generation of electrical power over the life of the proposed project, the energy required to convey water to and wastewater from the project site, the emissions associated with the hauling and disposal of solid waste from the project site, any fugitive refrigerants from air conditioning or refrigerators, and the operation of stationary sources such as back-up generators. Neither the City of Pleasanton nor the BAAQMD has an adopted threshold of significance for construction-related GHG emissions. Because construction would be temporary and would not result in a permanent increase in emissions, the proposed project would not interfere with the implementation of AB 32 or SB 32. In the absence of a construction emission threshold, the total emissions generated during construction were amortized based on the assumed life of the development (30 years) and added to the operational emissions to determine the total emissions from the proposed project. Finally, the net change in GHG emissions was determined by subtracting the GHG emissions from the existing site operations from the proposed project’s GHG emissions. The 2017 BAAQMD CEQA Guidelines contain the following thresholds for operational GHG emissions: For land use development projects (including residential, commercial, industrial, and public land uses and facilities), the threshold is compliance with a qualified GHG Reduction Strategy; or annual emissions less than 1,100 metric tons (MT) per year of carbon dioxide equivalent (CO2e); or 4.6 MT CO2e/service population (residents plus employees)/year. It should be noted that the BAAQMD’s thresholds of significance were established based on meeting the 2020 GHG targets set forth in the AB 32 Scoping Plan. For developments that would occur beyond 2020, the service population threshold of significance was adjusted to a “substantial progress” threshold that was calculated based on the SB 32 target of 40 percent below 1990 levels and the forecasted 2030 service population. To determine significance, the proposed project’s GHG emissions are assessed against the 2020 BAAQMD efficiency threshold of 4.6 MT CO2e per service population per year and the projected 2030 efficiency threshold of 2.4 MT CO2e per service population per year. Project Construction The proposed project would emit GHG emissions during construction from the off-road equipment, worker vehicles, and any vendor and hauling trips that may occur. Appendix A includes the detailed construction assumptions. The BAAQMD does not presently provide a construction-related GHG generation threshold but recommends that construction-generated GHGs be quantified and disclosed. Table 13 presents the total GHG emissions generated during all phases of construction.