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4 Environmental Analysis 4.3 Air Quality and employ all best available fugitive dust control measures that would reduce the risk of contracting Valley Fever. The Project would also comply with SJVPACD Regulation VIII, which requires fugitive dust sources to implement best available control measures for all sources, as described earlier. The nearest sensitive receptors (rural residences) are located approximately 1,000 feet from the nearest Project boundary. Based on this distance, earthmoving activities during Project construction would not result in exposure of nearby sensitive receptors to Valley Fever. The California Department of Public Health recommends that employers in areas with endemic C. immitus should implement infection prevention measures and protect workers who are at risk for exposure to C. immitus. Infection risk can be decreased by using dust control measures and appropriate personal protective equipment at work. The Project would implement dust control strategies to limit fugitive dust leaving the site and will also implement Valley Fever awareness and training. Mitigation Measure AQ-3 would address the potential for Valley Fever and would further reduce impacts. It is included to ensure that the Applicant-proposed measures to prevent Valley Fever are implemented. Mitigation: None required; however, the Applicant-proposed compliance with Rule 9510 and Valley Fever prevention measures have been included as Mitigation Measures AQ-1 and AQ-3, respectively to ensure their implementation. IMPACT 4.3-4: Would the project create objectionable odors affecting a substantial number of people? (Less than Significant Impact) During Project-related construction activities, various diesel-powered vehicles and equipment could create minor odors. These odors are not likely to be noticeable beyond the immediate vicinity and would be temporary and short lived. In addition, the nearest sensitive receptors on land not owned by the Project's current property owner are 1,000 feet or more from the Project site. Therefore, construction odor impacts would be less than significant. Long-term odors are associated typically with industrial projects involving use of chemicals, solvents, petroleum products, and other strong-smelling elements used in manufacturing processes. Odors also are associated with such uses as sewage treatment facilities and landfills. The Project involves no elements related to these types of uses. Therefore, no long-term odor impacts would occur with Project implementation. Mitigation: None required. IMPACT 4.3-5: Would the project violate any air quality standard or contribute substantially to an existing or projected air quality violation? (Less than Significant Impact) The SJVAPCD has established annual significance thresholds to address pollution sources associated with general construction activities, such as the operation of onsite construction equipment,fugitive dust from site grading activities, and travel by construction workers. In addition to the SJVAPCD annual significance thresholds, the SJVAPCD also recommends the use of daily emissions thresholds for the evaluation of project impacts on localized ambient air quality. Based on these recommended thresholds, the proposed Project would result in a significant contribution to localized ambient air quality if onsite emissions would exceed a daily average of 100 lbs/day for any of the pollutants evaluated. Griffith Energy Storage Project 4.3-29 Tetra Tech/SCH 2022120675 Draft Environmental Impact Report August 2023