2014-028 - Approving General Plan Amendement No. 2014-01

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City of Santa Ana -Park View at Town and Country Manor Draft EIR Air Quality Plan Impact 4.2 -4 The project would conflict with or obstruct implementation of the applicable air quality plan. [CEQA Air Quality Threshold 3(a)] Impact Analysis To address this impact, two criteria are addressed, as discussed below. Criterion 1: Project's Contribution to Air Quality Violations According to the SCAQMD, the project is consistent with the AQMP if the project would not result in an increase in the frequency or severity of existing air quality violations or cause or contribute to new violations, or delay timely attainment of air quality standards or the interim emission reductions specified in the AQMP. The purpose of the 2003 AQMP is to lead the basin and portions of the Salton Sea Air Basin under SCAQMD jurisdiction into compliance with the 1 -hour ozone and PM, national standards. The purpose of the 2007 AQMP is to lead the basin into compliance of the national 8 -hour ozone and PM2.5 standards. As shown in Impact 4.2.5, the project could violate an air quality standard for PM, and PM2.5 or contribute substantially to an existing or projected air quality violation at sensitive receptors within 50 meters of the project during grading and demolition activities without mitigation. However, there is no monitoring station located within 50 meters of the project. The closest monitoring station is located at Euclid Street and W. Lincoln Street in Anaheim. The localized particulate matter impacts during grading are confined to a 50 -meter radius to the project. When an air basin exceeds the ambient air quality standards at monitoring stations, it would be in nonattainment for those pollutants for which the standards were violated. To ensure that background concentrations of PM, and PM2s are low enough so that the project could not possibly cumulatively contribute to a violation at a monitoring station, mitigation measure AQ -4 is required. It is anticipated that the majority of particulate matter from grading and demolition would fall out via particle deposition and be dispersed to such a concentration to not contribute to an air quality violation of PM, or PM2.S. Concerning regional emissions, without mitigation, emissions of VOC and NOx would exceed the regional emission thresholds. Therefore, ozone precursors of VOC and NOx could cumulatively result in a violation of the ozone ambient air quality standard at the nearby monitoring station. Therefore, mitigation measures are required. Mitigation measure AQ -4 that follows addresses the Air Quality Index (AQI). The AQI is an index for reporting daily air quality. It indicates how clean or polluted the air is and what associated health effects might be a concern. The AQI focuses on health effects that may be experienced within a few hours or days after breathing polluted air. An AQI of 100 generally corresponds with the national Michael Brandman Associates 4.2 -23 H\Cl t(PN- JMb327b32]003MMVB2]0030 Se 4GAvQ ity.DOc