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O NE B RO A D WA Y P LA Z A P RO J E CT E I R A D DE N DU M CI T Y O F S A NT A A NA 5. Environmental Analysis March 2020 Page 31 unavoidable. Construction of the Proposed Project would occur within the building envelope of the Approved Project and would not expand the building footprint nor require additional grading or excavation . Thus, the Proposed Project’s construction-related air quality emissions would be within the scope of analysis of the Approved Project identified in the Certified EIR. The Proposed Project would further incorporate all applicable mitigation measures identified in the Certified EIR. Therefore, the Proposed Project would not create a new significant impact or a substantial increase in the severity of previously identified effects. Table 4, Proposed Project Operational Emission Summary, shows that the operational emissions of the Proposed Project. The Proposed Project’s operational emissions would not exceed the regional thresholds of significance established by the SCAQMD for any criteria emissions. Table 4 Proposed Project Operational Emission Summary Operational Activities – Summer Scenario Emissions (pounds per day) VOC NOx CO SOx PM10 PM2.5 Area 12.98 0.39 33.31 1.75E-03 0.18 0.18 Energy 0.35 3.11 2.13 0.02 0.24 0.24 Mobile 5.84 20.70 59.56 0.19 16.35 4.50 Total Maximum Daily Emissions 19.18 24.20 94.99 0.22 16.77 4.93 SCAQMD Regional Threshold 55 55 550 150 150 55 Threshold Exceeded? NO NO NO NO NO NO Operational Activities – Winter Scenario Emissions (pounds per day) VOC NOx CO SOx PM10 PM2.5 Area 12.98 0.39 33.31 1.75E-03 0.18 0.18 Energy 0.35 3.11 2.13 0.02 0.24 0.24 Mobile 5.76 21.13 58.61 0.19 16.35 4.50 Total Maximum Daily Emissions 19.10 24.63 94.05 0.21 16.77 4.93 SCAQMD Regional Threshold 55 55 550 150 150 55 Threshold Exceeded? NO NO NO NO NO NO Further, Table 5, Operational Emission Comparison, compares peak operational-source criteria pollutant emissions generated by the Proposed Project with peak opera tional-source criteria pollutant emissions generated by the Currently Approved One Broadway Plaza land uses. As indicated at Table 5, the Proposed Project would result in a net decrease in peak operational -source VOC, NOX, CO, and SOX emissions when compared to peak operational-source criteria pollutant emissions generated by the Currently Approved One Broadway Plaza land uses. The Certified EIR disclosed that operational NOx emissions from the Approved Project would be significant and unavoidable. With the Proposed Project, NOX impacts would be reduced to a less than significant level. The Proposed Project’s operation air quality emissions would be less than significant. The Proposed Project would reduce the significant and unavoidable impact relating to op erational NOx to a less than significant level. Therefore, the Proposed Project would not create a new significant impact or a substantial increase in the severity of previously identified effects. The Proposed Project would further incorporate all applicable mitigation measures identified in the Certified EIR. The Proposed Project would not require major revisions to the Certified EIR. 5 - 85