75A - One Broadway Plaza Addendum_4.20.2020_wAppendices

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ONE BROADWAY PLAZA PROJECT EIR ADDENDUM CITY OF SANTA ANA 5. Environmental Analysis mitigation measures identified in the Certified EIR. The Proposed Project would not require major revisions to the Certified EIR. Table 5 Operational Emission Comparison Operational Activities Emissions (pounds per day) vOC NO, CO sox PM10 PM2.5 Proposed Project 18.78 23.16 91.93 0.20 15.61 4.61 Approved One Broadway Plaza 31.60 76.10 462.20 41.30 8.50 - Difference .12.82 -52.94 -370.27 -41.10 7.11 NIA c) Expose sensitive receptors to substantial pollutant concentrations? Less Than Significant Impact/No Changes or New Information Requiring Preparation of an EIR. The Certified EIR determined that the Approved Project would result in a less than significant impact relating to local carbon monoxide concentrations. The Certified EIR found that the Approved Project's CO emissions would be incompliance with the 1-hour and 8-hour state and federal standards. As discussed above, the construction of the Proposed Project would be within the envelope of the Approved Project. The Proposed Project would not expand the Approved Project's building footprint or require additional grading and excavation. 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 not require major revisions to the Certified EIR. d) Result in other emissions (such as those leading to odors) adversely affecting a substantial number of people? No Impact. The Initial Study to the Certified EIR found that the Approved Project's office and commercial uses would result in a less than significant impact to objectionable odors. According to SCAQMD, land uses associated with odor complaints typically include agricultural uses, wastewater treatment plants, food processing plants, chemical plants, composting, refineries, landfills, dairies, and fiberglass molding facilities. The Proposed Project does not include any uses identified by the SCAQMD as being associated with odors and therefore would not produce objectionable odors. As such, the Proposed Project would have no impact related to objectionable odors. The Proposed Project would comply with SCAQMD Rule 402 to prevent occurrences of public nuisances (34). No changes or new information would require preparation of a subsequent EIR. 5.3.3 Adopted Mitigation Measures Applicable to the Proposed Project The following mitigation measures have been carried through from the One Broadway Plaza EIR. These mitigation measures have been incorporated into MMRP for this Addendum. Any modifications to the mitigation measures from the Certified EIR are shown as for deleted text and bold for new, inserted text. AQ-1 Use low -emission mobile construction equipment where feasible. Page 32 PlaceWorks