14 ATTACHMENT 6 - Appendix A - E

Summary of 2018 Spotorno Ranch Air Quality Analysis March 22, 2021 Page 10 impacts would not exceed BAAQMD’s project-level significance of thresholds. Therefore, the cumulative health impacts would not exceed the BAAMQD’s recommended cumulative health significance thresholds. Impacts would be less than significant. Asbestos Structures to be demolished sometimes contain asbestos-containing materials; however, the project does not propose demolition of existing buildings. Therefore, construction of the project would not expose nearby sensitive receptors to asbestos through demolition of existing buildings. The Department of Conservation, Division of Mines and Geology (DMG) published a guide for generally identifying areas that are likely to contain naturally occurring asbestos (NOA). The associated DMG map indicates that there are several locations within Alameda County that are likely to contain NOA; however, the closest of these sites is located greater than 5 miles from the project site.2 Considering this information, the project would not expose nearby sensitive receptors or future residents to substantial amounts of asbestos and impacts relating to exposing sensitive receptors to asbestos would be less than significant. Operational CO Hotspot As addressed in Impact AIR-2, the project would not create a CO hotspot and would result in a less than significant impact for to air quality for local CO. Impact AIR-5. Objectionable Odors Odors can cause a variety of responses. The impact of an odor often results from interacting factors such as frequency (how often), intensity (strength), duration (time), offensiveness (unpleasantness), location, and sensory perception. Construction Diesel exhaust and VOCs would be emitted during construction of the project resulting from heavy-duty construction equipment and asphalt paving activities, both of which could be objectionable odors to some populations. However, emissions would disperse rapidly from the site and construction activities would be relatively low in intensity. Therefore, it is not anticipated that construction-related activities would create objectionable odors affecting a substantial number of people. As such, construction odor impacts would be less than significant. Operation Land uses considered associated with odors typically include agricultural operations (dairies, feedlots, etc.), landfills, wastewater treatment plants, refineries, and other types of industrial land uses. The project does not propose any of these land uses, or other land uses typically associated with emitting objectionable odors. During operation of the project, potential sources of odor would primarily consist 2 Department of Conservation, Division of Mines and Geology. 2000. A General Location Guide for Ultramafic Rocks in California—Areas More likely to Contain Naturally Occurring Asbestos. August. Website: ftp://ftp.consrv.ca.gov/pub/dmg/pubs/ofr/ofr_2000-019.pdf. Accessed March 30, 2018.