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INTRODUCTION <br />The proposed 1901 East First Street project proposes the development of 343,675 square feet of <br />residential use (254 units) and 2,424 square feet of retail space on a 5.1 acre site at the northeast <br />corner of First Street and Cabrillo Park Drive. The project proposes to construct two five -story <br />low -rise buildings totaling 240 units on the west side of the existing 4 level parking structure. <br />Fourteen three -story townhomes will be constructed along the south and east sides of the parking <br />structure. <br />This report calculates the air quality and greenhouse gas (GHG) emissions from the proposed <br />action using the currently approved California Emissions Model (CaIEEMod). Air pollution <br />emissions from project construction and operation are compared to SCAQMD CEQA <br />significance thresholds. There are no adopted GHG significance thresholds for CEQA purposes <br />and the City of Santa Ana has not yet adopted a climate action plan (CAP). The SCAQMD has <br />developed advisory thresholds which are used as a benchmark for analyzing GHG emissions <br />significance. As noted in the following analysis, the limited scope of the proposed project does <br />not cause any significance thresholds to be exceeded for either construction of operations. <br />However, because of the non - attainment status of the air basin for photochemical smog and <br />particulate matter, the use of reasonably available control measures is recommended for project <br />construction activities. <br />AIR QUALITY IMPACT <br />STANDARDS OF SIGNIFICANCE <br />Air quality impacts are considered "significant' if they cause clean air standards to be violated <br />where they are currently met, or if they "substantially" contribute to an existing violation of <br />standards. Any substantial emissions of air contaminants for which there is no safe exposure, or <br />nuisance emissions such as dust or odors, would also be considered a significant impact. <br />Appendix G of the California CEQA Guidelines offers the following five tests of air quality <br />impact significance. A project would have a potentially significant impact if it: <br />a. Conflicts with or obstructs implementation of the applicable air quality plan. <br />b. Violates any air quality standard or contributes substantially to an existing or projected air <br />quality violation. <br />c. Results in a cumulatively considerable net increase of any criteria pollutants for which the <br />project region is non - attainment under an applicable federal or state ambient air quality <br />standard (including releasing emissions which exceed quantitative thresholds for ozone <br />precursors). <br />d. Exposes sensitive receptors to substantial pollutant concentrations. <br />e. Creates objectionable odors affecting a substantial number of people. <br />IA EI - SlAQ '2' <br />