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F I RSTCAR B O N Proposal SULJTHU \S • Define what a sensitive receptor is and identify nearby sensitive receptors. • Identify applicable federal, State, and BAAQMD rules and regulations. • Identify health risk standards and acceptable cancer and acute and chronic non-cancer risk thresholds from diesel emissions that are detailed in the California Office of Environmental Health Hazard Assessment(OEHHA) HRA Guidelines. • Obtain the on-site construction equipment DPM emissions rates that were calculated in the Air Quality Analysis prepared for the proposed project. • Obtain the daily construction truck trip estimates used in the Air Quality Analysis and calculate off- site heavy-duty truck DPM emissions rates within 1,000 feet of the project site. • Calculate the DPM concentrations at the nearby sensitive receptors associated with the on-site construction equipment and off-site truck emissions up to 1,000 feet from the project site,the emissions rates calculated in the previous steps, and the methodology described in the OEHHA HRA Guidelines. • Utilize the prior task's calculated toxic air emission levels to calculate the cancer risk and the chronic and acute non-cancer health impacts at the nearby residential uses from construction of the proposed project. FCS assumes that an operational HRA will not be warranted to identify and quantify the potential cumulative health risks during project operations. However, in the process of evaluating operational air quality emissions, FCS will confirm whether potential operation emission levels would warrant an HRA. If an operational HRA is required, it would be accomplished as an additional service not included in this Scope of Work. Greenhouse Gas Analysis FCS will quantify the proposed project's construction and operational GHG emissions using assumptions and methodologies consistent with those used in the Air Quality Analysis. Estimated GHG emissions will be evaluated against appropriate cumulative significance thresholds established in the BAAQMD CEQA Guidelines or other applicable thresholds(e.g.,the BAAQMD's construction-related GHG threshold). The BAAQMD quantitative thresholds of significance will be used to determine if the project's generation of GHG emissions, based on its mass emissions or GHG efficiency(GHG emissions per service population [i.e., residents plus employees] or standardized size metric [e.g., 1,000 square feet]), is considered a significant impact. Where possible,the modeling data from the previous GHG Emissions Due Diligence Memo for this project will be utilized to support this analysis. Pursuant to CEQA Guidelines Appendix G, FCS will also evaluate the project's design and purpose in the context of consistency with applicable GHG reduction plans, including the City of Pleasanton's Climate Action Plan (CAP) and the State Scoping Plan.The GHG Emissions Analysis will also address the California Supreme Court ruling on the Newhall Ranch project and will utilize current approved methods for NORTH AMERICA I EUROPE I AFRICA I AUSTRALIA I ASIA FIRSTCARBONSOLUTIONS.COM 4