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Anaheim Housing Opportunities Sites Rezoning Project Draft Supplemental EIR City of Anaheim Page 6-1 6. Significant Unavoidable Adverse Impacts 6.1 SIGNIFICANT AND UNAVOIDABLE IMPACTS Table 1-1 in Chapter 1, Executive Summary, discusses the Proposed Project and contains a summary of its impacts; mitigation measures; and levels of significance before and after mitigation is applied. While mitigation measures would reduce the significance of most of the Proposed Project's impacts to less than significant, the following adverse impacts would remain significant and unavoidable even after feasible mitigation measures are applied: 6.1.1 Air Quality IMPACT 5.1-1: Construction emissions associated with buildout of the Proposed Project would, similar to the 2004 Approved Project, result in a substantial increase in criteria air pollutants that could exceed the South Coast Air Quality Management District’s emissions thresholds and contribute to the ozone (O3), nitrogen dioxide (NO2), and Particulate Matter (PM10 and PM2.5) nonattainment designations of the South Coast Air Basin. [Thresholds AQ-2, AQ-3, and AQ-4] Similar to the 2004 Approved Project, due to the scale of development activity associated with the Proposed Project, emissions would exceed the South Coast Air Quality Management District’s (SCAQMD) significance thresholds and cumulatively contribute to the nonattainment designations of the Southern California Air Basin (SCAB). Mitigation Measure 5.2-1 would reduce construction emissions to the extent feasible. However, similar to the 2004 Approved Project, Impact 5.1-1 for the Proposed Project would remain significant and unavoidable even after mitigation. IMPACT 5.1-2: Long-term operation of the Proposed Project would, similar to the 2004 Approved Project, exceed the South Coast Air Quality Management District’s emissions thresholds and contribute to the ozone (O3), nitrogen dioxide (NO2), and Particulate Matter (PM10 and PM2.5) nonattainment designations of the South Coast Air Basin. [Thresholds AQ-2 and AQ-3] Similar to the 2004 Approved Project, criteria air pollutants generated by the Proposed Project would exceed the SCAQMD's thresholds for all criteria air pollutants, except sulfur dioxide (SO2). Due to the increase in development intensity associated with the Proposed Project, the magnitude of the increase in criteria air pollutants compared to the 2004 Approved Project would be significant. Mitigation Measures 5.2-2 through 5.2-6 would reduce operational phase air quality impacts to the extent feasible. However, like the 2004 Approved Project, Impact 5.1-2 for the Proposed Project would remain significant and unavoidable even after mitigation and would result in greater impacts compared to the 2004 Approved Project. ---PAGE BREAK--- 6. Significant Unavoidable Adverse Impacts Page 6-2 July 2013 6.1.2 Greenhouse Gas Emissions IMPACT 5.2-1: The Proposed Project’s GHG emissions would be greater than the 2004 Approved Project's GHG emissions. [Threshold GHG-1] The 2004 Certified EIR did not evaluate greenhouse gas (GHG) emissions impacts because this was not included in the California Environmental Quality Act (CEQA) Guidelines Appendix G checklist and the City did not have adopted GHG thresholds at the time of preparation. In accordance with the amendments to the CEQA Guidelines, inventories were compiled to forecast GHG emissions generated by the 2004 Approved Project as well as the Proposed Project. The Proposed Project's GHG emissions were compared to the 2004 Approved Project's GHG emissions, which constitute the CEQA baseline. As identified in Impact 5.2-1, similar to the 2004 Approved Project, GHG emissions for the Proposed Project would exceed the SCAQMD's proposed GHG efficiency threshold. Table 5.2-5 in Chapter 5.2, Greenhouse Gas Emissions, shows that the Proposed Project would result in a substantial increase in GHG emissions compared to the 2004 Approved Project’s GHG emissions based on SCAQMD’s bright- line threshold. Due to the increase in development intensity associated with the Proposed Project, the magnitude of the increase in GHG emissions compared to the GHG emissions of the 2004 Approved Project would be significant. Mitigation Measures 5.2-2 through 5.2-6 would reduce GHG impacts to the extent feasible. New proposed Mitigation Measures 5.2-8 through 5.2-12 would further reduce GHG emissions to the extent feasible. However, like the 2004 Approved Project, Impact 5.2-2 of the Proposed Project would remain significant and unavoidable even after mitigation and would result in greater impacts compared to the 2004 Approved Project. 6.1.3 Noise IMPACT 5.3-1 Similar to the 2004 Approved Project, the Proposed Project would not substantially elevate traffic noise levels above local noise standards at noise- sensitive receptors. [Thresholds N-1 and N-3] Similar to the 2004 Approved Project, due to the scale of development activity associated with the Proposed Project, many roadways within the City would still be expected to generate significant noise impacts. Mitigation Measures 5.10-1 and 5.10-2 would reduce operational noise impacts to the extent feasible. Similar to the 2004 Approved Project, Impact 5.3-1 of the Proposed Project would remain significant and unavoidable even after mitigation. 6.1.4 Transportation and Traffic IMPACT 5.4-1: Traffic volumes associated with buildout of the Proposed Project would impact levels of service to a greater degree for the existing roadway system, as compared to the 2004 Approved Project. [Thresholds T-1 and T-2] The 2004 Certified EIR concluded that, under the 2004 Approved Project, all intersections and roadway segments would operate at acceptable levels of service after the implementation of existing or planned improvements, with the exception of the Harbor Boulevard / Ball Road intersection. ---PAGE BREAK--- 6. Significant Unavoidable Adverse Impacts Anaheim Housing Opportunities Sites Rezoning Project Draft Supplemental EIR City of Anaheim Page 6-3 As shown in Table 5.4-7, recommended improvements at the following intersections may not be feasible due to impacts to adjacent land uses: Euclid Street / Katella Avenue (PM) Disneyland Drive / Ball Road (PM) Disneyland Drive / Katella Avenue (PM) Harbor Boulevard / Ball Road (AM and PM) Lewis Street / Ball Road (PM) State College Boulevard / Katella Avenue (PM) State College Boulevard / Orangewood Avenue (PM) Similar to the 2004 Approved Project, Impact 5.12-1 of the Proposed Project would remain significant and unavoidable even after mitigation and would result in greater impacts compared to the 2004 Approved Project. ---PAGE BREAK--- 6. Significant Unavoidable Adverse Impacts Page 6-4 July 2013 This page intentionally left blank.