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City of Pleasanton—Hidden Canyon Residences and Preserve <br />Air Quality Draft EIR <br /> <br /> <br />3.2-6 FirstCarbon Solutions <br />https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480016/EIR/3 - Draft EIR/21480016 Sec03-02 Air Quality.docx <br />Criteria Pollutant <br />Physical Description and <br />Properties <br />Most Relevant Effects from <br />Pollutant Exposure Sources <br />• Identified in 1990 as a <br />toxic air contaminant and <br />estimated a cancer unit <br />risk factor. <br />• Long-term exposure: liver <br />damage and liver cancer <br />sewage plants, and <br />hazardous waste sites <br />Asbestos • A number of naturally <br />occurring fibrous silicate <br />minerals that have been <br />mined for their useful <br />properties such as <br />thermal insulation, <br />chemical and thermal <br />stability, and high tensile <br />strength. The three most <br />common types of <br />asbestos are chrysotile, <br />amosite, and crocidolite. <br />• Lung disease • Attic and wall insulation <br />• Vinyl floor tiles, sheet <br />flooring and adhesives <br />• Roofing and siding <br />shingles <br />• Textured walls and ceilings <br />• Hot water and steam <br />pipes with asbestos <br />covering <br />• Automobile clutches and <br />brakes <br />Toxic Air <br />Contaminant <br />• Sizes of particles vary <br />from less than 2.5 <br />micrometers to 10 <br />micrometers <br />• Particles can be spherical, <br />irregular, or fibrous. <br />• Cancer <br />• Reproductive and <br />developmental effects <br />• Neurological effects <br />• Cars and trucks (especially <br />diesels) <br />• Industrial sources, such as <br />chrome platers <br />• Neighborhood businesses, <br />such as dry cleaners and <br />service stations <br />• Building materials and <br />products <br />Sources: <br />California Air Resources Board (ARB). 2023. Common Air Pollutants. Website: <br />https://ww2.arb.ca.gov/resources/common-air-pollutants. Accessed April 1, 2025. <br />United States Environmental Protection Agency (EPA). 2023. Learn About Asbestos. Website: <br />https://www.epa.gov/asbestos/learn-about-asbestos#find. Accessed April 1, 2025. <br />California Air Resources Board (ARB). 2023. ARB Identified Toxic Air Contaminants. <br />https://ww2.arb.ca.gov/resources/documents/carb-identified-toxic-air-contaminants. Accessed April 1, 2025. <br /> <br />Ozone <br />Ozone, a key element of smog, is formed in the atmosphere through complex chemical reactions <br />between vehicles, industrial plants, consumer products and many other sources. Ozone can be <br />compared to household bleach, which can kill living cells, such as germs or human cells, upon <br />contact. It forms in greater quantities on hot, sunny, calm days. In metropolitan areas of California, <br />ozone concentrations frequently exceed existing health-protective standards in the summer.1 <br /> <br />1 California Air Resources Board (ARB). 2023. Ozone & Health. Website: https://ww2.arb.ca.gov/resources/ozone-and-health. <br />Accessed October 10, 2024.