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ONE BROADWAY PLAZA PROJECT EIR ADDENDUM <br />CITY OF SANTA ANA <br />5. Environmental Analysis <br />unavoidable. Construction of the Proposed Project would occur within the building envelope of the Approved <br />Project and would not expand the building footprint nor require additional grading or excavation. Thus, the <br />Proposed Project's construction -related air quality emissions would be within the scope of analysis of the <br />Approved Project identified in the Certified EIR. The Proposed Project would further incorporate all applicable <br />mitigation measures identified in the Certified EIR. Therefore, the Proposed Project would not create a new <br />significant impact or a substantial increase in the severity of previously identified effects. <br />Table 4, Proposed Pr ject Operational Emission Summary, shows that the maximum daily operational -source criteria <br />pollutant emissions generated by the Proposed Project. The Proposed Project's operational emissions would <br />not exceed the regional thresholds of significance established by the SCAQMD for any criteria emissions. <br />Table 4 Proposed Project Operational Emission Summary <br />Operational Activities - Summer <br />Scenario <br />Emissions (pounds per day) <br />VOC <br />NOx <br />CO <br />SOX <br />PM10 <br />PM2.e <br />Area <br />12.96 <br />0.40 <br />34.38 <br />1.81 E-03 <br />0.19 <br />0.19 <br />Energy <br />0.34 <br />2.99 <br />2.02 <br />0.02 <br />0.23 <br />0.23 <br />Mobile <br />5.48 <br />19.37 <br />55.54 <br />0.18 <br />15.19 <br />4.18 <br />Total Maximum Daily Emissions <br />18.78 <br />22.76 <br />91.93 <br />0.20 <br />15.61 <br />4.61 <br />SCAQMD Regional Threshold <br />55 <br />55 <br />550 <br />150 <br />150 <br />55 <br />Threshold Exceeded? <br />NO <br />NO <br />NO <br />NO <br />NO <br />NO <br />Operational Activities -Winter <br />Scenario <br />Emissions (pounds per day) <br />VOC <br />NOx <br />CO <br />sox <br />PM10 <br />PM2.5 <br />Area <br />12.96 <br />0.40 <br />34.38 <br />1.81 E-03 <br />0.19 <br />0.19 <br />Energy <br />0.34 <br />2.99 <br />2.02 <br />0.02 <br />0.23 <br />0.23 <br />Mobile <br />5.41 <br />19.77 <br />54.69 <br />0.17 <br />15.19 <br />4.18 <br />Total Maximum Daily Emissions <br />18.71 <br />23.16 <br />91.09 <br />0.19 <br />15.61 <br />4.61 <br />SCAQMD Regional Threshold <br />55 <br />55 <br />550 <br />150 <br />150 <br />55 <br />Threshold Exceeded? <br />NO <br />NO <br />NO <br />NO <br />NO <br />NO <br />Further, Table 5, Operational Emission Comparison, compares peak operational -source criteria pollutant emissions <br />generated by the Proposed Project with peak operational -source criteria pollutant emissions generated by the <br />Currently Approved One Broadway Plaza land uses. As indicated at Table 5, the Proposed Project would result <br />in a net decrease in peak operational -source VOC, NOx, CO, and SOx emissions when compared to peak <br />operational -source criteria pollutant emissions generated by the Approved Project. The Certified EIR disclosed <br />that operational NOx emissions from the Approved Project would be significant and unavoidable. With the <br />Proposed Project, NOx impacts would be reduced to a less than significant level. The Proposed Project's <br />operational air quality emissions would be less than significant. The Proposed Project would reduce the <br />significant and unavoidable impact relating to operational NOx to a less than significant level. Although PM10 <br />emissions go up slightly with the Proposed Project, they remain below AQMM's Significance Criteria. <br />Therefore, the Proposed Project would not create a new significant impact or a substantial increase in the <br />severity of previously identified effects. The Proposed Project would further incorporate all applicable <br />Apri12020 Page 31 <br />