55C - RESO - BRISTOL ST IMPROVEMENTS

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ENVIRONMENTAL IMPACT REPORTADDENDUM Bristol Street Widening Phase 1118 —Washington Avenue to I 7 Street Difference between No Project and with Project Emissions Bristol Street Between Seventeenth Street and -2 -1 -1 0 0 0 Washington Avenue SCAQMD Significance 550 55 55 150 150 55 Thresholds 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; PMto = 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 pollutant for 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, PMIO, 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 of Bristol Street from Washington Avenue to 17u' Street to address existing and projected traffic congestion. Increases in roadway capacity would result in improvement in the LOS along Bristol Street. The improvement in LOS would result in increases in average vehicle speed and reductions in the amount of delay vehicles experience at intersections thereby resulting in both lower emissions and lower emissions rates associated with higher vehicle speeds. As such, the Project would continue to result in a beneficial impact. Implementation of the proposed Project would not result in greater impacts than previously analyzed in the 1990 FEIS /EIR. Mitigation Measures No additional new mitigation measures are required. d.) Expose sensitive receptors to substantial pollutant concentrations? A project could have the potential to expose sensitive receptors to elevated pollutant concentrations if it would cause or contribute substantially to elevated pollutant concentration levels or place the Project in an area with elevated pollutant concentrations. An evaluation of air pollutant emissions as it affects local sensitive receptors has been conducted for both the construction and operations phases of the Project. ANA 1 I I -334 (PER- 02 -01) CITY OF SANTA ANA (11/25/2013 REV2) 132897 CM PAGE 25 55C -40