14 ATTACHMENT 6 - Appendix A - E

Summary of 2018 Spotorno Ranch Air Quality Analysis March 22, 2021 Page 12 a) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment? (See Impact GHG-1 below.) b) Conflict with any applicable plan, policy or regulation of an agency adopted for the purpose of reducing the emissions of greenhouse gases? (See Impact GHG-2 below.) While the final determination of whether or not a project is significant is within the purview of the lead agency pursuant to CEQA Guidelines Section 15064(b), the BAAQMD recommends that its quantitative and qualitative air pollution thresholds be used to determine the significance of project emissions. These thresholds are discussed under each impact section below. Greenhouse Gas Emissions BAAQMD provides multiple options in its 2017 CEQA Guidelines for project-level GHG generation from project operation. BAAQMD does not presently provide a construction-related GHG generation threshold, but it does recommend that construction-generated GHGs be quantified and disclosed. BAAQMD also recommends that lead agencies (in this case, the City of Pleasanton) make a determination of the level of significance of construction-generated greenhouse gas emissions in relation to meeting AB 32 GHG reduction goals. The lead agency is also encouraged to incorporate best management practices to reduce GHG emissions during project construction, as feasible and applicable. BAAQMD’s project-level significances threshold for operational GHG generation was deemed appropriate to use when determining the project’s potential GHG impacts. The thresholds suggested by BAAQMD for project-level operational GHG generation are as follows: • Compliance with a qualified GHG Reduction Strategy, or • 1,100 MT CO2e/year, or • 4.6 metric tons of CO2 equivalent per service population (employees plus residents) per year. BAAQMD’s Air Quality Guidelines state that if annual emissions of GHG exceed the thresholds, the project would result in a cumulatively considerable significant impact to global climate change. Conversely, if the project is less than any one of the thresholds identified above, then the project would result in a less than significant cumulative impact to global climate change. The estimated annual operational emissions were compared with the 1,100 MT CO2e/year significance threshold to determine significance for this criterion. Construction The project would emit GHG emissions during construction from the off-road equipment, worker vehicles, and any hauling that may occur. As previously indicated, BAAQMD does not presently provide a construction-related GHG generation threshold but recommends that construction-generated GHGs be quantified and disclosed. BAAQMD also recommends that lead agencies (in this case, the City of Pleasanton) make a determination of the level of significance of construction generated GHG emissions in relation to meeting AB 32 GHG reduction goals. Total GHG emissions generated during all phases of construction were combined and are presented in Table 7. As a conservative estimate, construction was