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a toxic air contaminant by CARB based on chronic exposure to these emissions.46 However, <br />construction activities would not produce chronic, long-term exposure to diesel particulate matter. During <br />long-term project operations, the Project does not include typical sources of acutely and chronically <br />hazardous TACs such as industrial manufacturing processes and automotive repair facilities. As a result, <br />the Project would not create substantial concentrations of TACs. <br />In addition, the SCAQMD recommends that health risk assessments be conducted for substantial <br />sources of diesel particulate emissions (e.g., truck stops and warehouse distribution facilities) and has <br />provided guidance for analyzing mobile source diesel emissions.47 The Project would not generate a <br />substantial number of truck trips. Based on the limited activity of TAC sources, the Project would not <br />warrant the need for a health risk assessment associated with on -site activities. Therefore, the Project's <br />operational impacts on local sensitive receptors would be less than significant. <br />d. Result in other emissions (such as those leading to odors) adversely affecting a substantial <br />number of people? <br />Less Than Significant Impact. The Project would not result in activities that create objectionable odors. <br />The Project is a housing, retail, and office development that would not include any activities typically <br />associated with unpleasant odors and local nuisances (e.g., rendering facilities, dry cleaners). SCAQMD <br />regulations that govern nuisances (i.e., Rule 402, Nuisances) would regulate any occasional odors <br />associated with any of the proposed land uses. As a result, any odor impacts from the Project would be <br />considered less than significant. <br />46 California Office of Environmental Health Hazard Assessment. Health Effects of Diesel Exhaust. www. <br />http://oehha.ca.gov/public—info/facts/dieselfacts.html <br />47 South Coast Air Quality Management District, Health Risk Assessment Guidance for Analyzing Cancer Risks <br />from Mobile Source Diesel Emissions, December 2002. <br />Cabrillo Town Center Project PAGE 33 City of Santa Ana <br />Air Quality lv `l.0uriCl 18 — 679 10/3/2023 July 2023 <br />