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4 Environmental Analysis 4.3 Air Quality Table 4.3-8. Estimated Maximum Annual Construction Criteria Air Pollutants Emissions TotalEmissions(tons per year) ROG NOxCO sox PM10 No Reductions 1.09 9.35 10.98 0.03 1.25 0.72 Rule 9510 and Dust Control Reductions 1.09 5.22 10.98 0.03 0.76 0.41 SJVAPCD Threshold 10 10 100 27 15 10 Threshold Exceeded? No No No No No No CO-carbon monoxide;NOx-nitrogen oxide;PM,o-particulate matter between 2.5 and 10 micrometers in diameter;PM2.5-particulate matter 2.5 micrometers in diameter or smaller;ROG-reactive organic gas;SJVAPCD-San Joaquin Valley Air Pollution Control District;SO.-sulfur oxide Table 4.3-9. Estimated On-site Maximum Daily Construction Criteria Air Pollutants Emissions Emissions(lbs/day) Total Project Emissions ROG NOxCO sox PM10 No Reductions 11.92 99.99 98.44 0.25 18.38 10.83 Rule 9510 and Dust Control Reductions 11.92 51.46 98.44 0.25 8.68 5.33 SJVAPCD On-site Emissions Threshold 100 100 100 100 100 100 Threshold Exceeded? No No No No No No CO-carbon monoxide;NOx-nitrogen oxide;PM,o-particulate matter between 2.5 and 10 micrometers in diameter;PM2.5-particulate matter 2.5 micrometers in diameter or smaller;ROG-reactive organic gas;SJVAPCD-San Joaquin Valley Air Pollution Control District;SO.-sulfur oxide As shown in Table 4.3-8, annual construction emissions would not exceed the SJVAPCD annual significance thresholds for any pollutants, both with and without reductions. As shown in Table 4.3-9, maximum daily onsite construction emissions would not exceed the SJVAPCD's localized significance threshold of 100 lbs/day for ROG, NOx, CO, SO, PM1o, or PM2.5. The SJVAPCD recommends that an AAQA be conducted when onsite emissions from any criteria pollutant would equal or exceed applicable significance thresholds or when onsite emissions would equal or exceed 100 lbs/day for any pollutant. Therefore, an AAAA was not performed for the Project. Operational Emissions Project operational emissions were estimated using CalEEMod to include area, mobile, and off- road source emissions. This included potential emissions from landscaping, worker commutes, and heavy trucks used during maintenance. Emissions from energy use were not included since electricity used onsite would be generated from the onsite batteries. Table 4.3-10 presents the estimated maximum annual operational emissions in tons per year with a comparison to SJVAPCD thresholds. The PM2.5 significance threshold is based on the BAAQMD threshold of 10 tons per year. Detailed emissions calculations are provided in Appendix D. Table 4.3-10. Estimated Maximum Annual Operational Criteria Air Pollutants Emissions ROG NOxCO sox PM10 Emission Source Tons per Year Area,Mobile,and Offroad 0.006 0.03 0.04 0.0001 0.002 0.0012 SJVAPCD Threshold 10 10 100 27 15 10 Threshold Exceeded? No No No No No No CO-carbon monoxide;NOx-nitrogen oxide;PM,o-particulate matter between 2.5 and 10 micrometers in diameter;PMz 5-particulate matter 2.5 micrometers in diameter or smaller;ROG-reactive organic gas;SJVAPCD-San Joaquin Valley Air Pollution Control District;SO.-sulfur oxide Griffith Energy Storage Project 4.3-26 Tetra Tech/SCH 2022120675 Draft Environmental Impact Report August 2023