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Environmental Checklist Air Quality Draft Initial Study – Mitigated Negative Declaration 33 carcinogenic health effects are expressed as a hazard index, which is the ratio of expected exposure levels to an acceptable reference exposure level. BAAQMD defines sensitive receptors as facilities or land uses that include members of the population that are particularly sensitive to the effects of air pollutants, such as children, the elderly, and those with pre-existing health problems. These facilities include schools, parks, daycare centers and pre-schools, medical care facilities, and residential communities (BAAQMD 2022). BAAQMD establishes operational screening criteria for criteria air pollutants and precursors. If a project meets the screening criteria outlined in Section 4.1.2 and Table 4-1 of the BAAQMD CEQA Guidelines (BAAQMD 2022), the project would not result in the generation of operational-related criteria air pollutants and/or precursors that exceed the emissions thresholds shown in Table 7 above. Although the proposed project would not exceed the size screening level of 452,000 square feet for warehouse projects, the project would include operation of a backup generator, which would be subject to BAAQMD rules and regulations. Therefore, an air quality analysis and quantification of operational project-generated air pollutants is required. Methodology The project’s construction and operational emissions were estimated using the California Emissions Estimator Model (CalEEMod), version 2022.1.1.19. CalEEMod uses project-specific information including the project’s land uses, square footage for different uses (e.g., office building, parking lot, and landscaped area), and location, to model a project’s construction and operational emissions. Calculations are included at the end of Appendix B. Construction emissions modeled include emissions generated by construction equipment used on site and emissions generated by vehicle trips associated with construction, such as workers and vendor trips. Project construction was analyzed based on the applicant-provided information regarding the construction schedule and types of construction equipment used. Standardized assumptions were used where project-specific information was unknown. This analysis also includes all applicable regulatory standards the project would be required to comply with. In particular, the project would comply with the 2022 Building Energy Efficiency Standards (Energy Code), CalGreen, the City of San Leandro’s General Plan, and BAAQMD’s rules and regulations. Specifically, the project would be required to comply with BAAQMD Regulation 8, Rule 3, which limits the quantity of volatile organic compounds in architectural coatings. Operational emissions modeled include mobile source emissions (i.e., passenger vehicle and truck emissions), and area source emissions. Mobile source emissions are generated by vehicle trips to and from the project site. The project’s trip generation rates are provided in the transportation analysis (Appendix C) prepared by Kittelson and Associates. The project trip generation rates were based on the Institute of Transportation Engineers (ITE), Trip Generation Manual, 10th Edition. CalEEMod default fleet mixes were adjusted to reflect light-duty and heavy-duty truck activity at the proposed warehouse, and the model considers emissions from idling in addition to vehicle travel. Area source emissions are generated by landscape maintenance equipment, consumer products and architectural coatings. There would be no air quality emissions associated with energy sources since the project would not utilize natural gas. Emissions that could result in health risks associated with toxic air contaminants were analyzed using the Hotspots Analysis and Reporting Program (HARP2) program. HARP2was used to calculate cancer risk during project construction and assumed a receptor type of an individual resident over two years of construction.