75B - PH - BRISTOL EIR FR CIVIC CENTER TO WASHINGTON(no exhibit 1)

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ENVIRONMENTAL IMPACT REPORTADDENDUM Bristol Street Widening Phase IIIA— Civic Center Drive to Washington Avenue Civic Center Drive and -24 -3 -4 0 -1 -1 Washington Avenue SCAQMD Significance Thresholds 550 55 55 150 150 55 Exceeds Thresholds Notes: mph = miles per hour; CO = carbon monoxide; ROG = reactive organic gases; NOx = nitrogen oxides; S02 = sulfur dioxide; PMIo = particulate matter less than less than or equal to 10 microns In diameter; PM2,5 = particulate matter less than less than or equal to 2.5 microns in diameter, TABLE 4 YEAR 2035 WITH AND WITHOUT PROJECT AIR POLLUTANT EMISSIONS Year 2035 No Protect Bristol Street Between Civic Center Drive and 13 35 3 6 0 2 2 Washington Avenue Year 2035 with Project Bristol Street Between Civic Center Drive and 20 29 2 4 0 2 1 Washinaton Avenue Difference between No Proiect and with Proiect Emissions Bristol Street Between Civic Center Drive and -6 -1 -1 0 -1 -1 -6 Washington Avenue SCAQMDISignificance 550 55 55 150 150 55 Exceeds Thresholds No No No No No No Source: Air Quality Assessment Report (URS 2013a). Notes: mph = miles per hour; CO = carbon monoxide; ROG = reactive organic gases; NOx = nitrogen oxides; S02 = sulfur dioxide; PMio = particulate matter less than less than or equal to 10 microns in diameter; PM2,5= particulate matter less than less than or equal to 2,5 microns in diameter. c.) Result in a cumulatively considerable net increase of any criteria pollutantfor which the project region is non - attainment under an applicable federal or state ambient air quality standard (including releasing emissions which exceed quantitative thresholds for ozone precursors) ? The SCAB is designated by the EPA and the State as being nonattainment for 03, PM10, and PM2.5. In accordance with SCAQMD methodology, any project that does not exceed or can be mitigated to less than the daily threshold values does not add significantly to a cumulative impact. As mentioned above, the development of the proposed Project demonstrates that construction and operational activities would not result in emissions in excess of SCAQMD's threshold values. Since the proposed Project would not exceed the SCAQMD's significance thresholds for construction activities or the operations phase, the SCAQMD does not consider emissions from the Project's emissions to add significantly to any cumulative impact. Furthermore, it should be noted that the proposed Project would increase the capacity ANA 305 -011 (PER O2) CITY OF SANTA ANA (01/19/2015) YU PAGE 32 75B -51