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a Responses to ~~ Environmental Checklist ~~ For CEQA Compliance Analysis: Table 3 presents the current status of the South Coast Air Basin (SCAB), which includes the proposed project area, in relation to federal and state criteria pollutant attainment. As shown, the SCAB does not achieve federal standards for carbon monoxide, PM,o, or PM2.5, and fails to meet the state standards for ozone, PMfo, and PM2.5. The SCAB recently reached attainment status for the federal standard for CO emissions. Table 3, A#tainment Status of Criteria Pollutants In the Sou#h Coast Air Basin Ozone - 8 hour standard Non-attainment -Severe 17 Not Established Ozone - 1 hour standard Revoked June 2005 Extreme Non-attainment Carbon Monoxide Tranistional Non-Attainment Attainment PM~o Serious Non-Attainment Non-Attainment PMz,s Non-attainment Non-Attainment NOz UnciassifiedlAttainment Attainment Source; CARE, Attainment Designation Fact Sheets, January 2006 Short-term construction activities represent the greatest potential for cumulatively contributing to these criteria pollutants. In the long-term, the proposed lift station would merely replace an existing lift station, such that there would be na net increase in emissions. As such, there would be no cumulatively considerable impact with long-term operation of the proposed facility. In the near-term during construction activities, the project has the potential to contribute to levels of ozone (including contribution of NOx), carbon monoxide, PM,a, or PM2.5, which could result in a cumulatively considerable increase. However, as discussed above under Issue III.B, construction of the proposed project is not anticipated to exceed the SCAQMD significance thresholds for any of these criteria pollutants. The release of NOx, carbon monoxide, PM~o, and PM2,~ when combined with other construction projects in the site vicinity, including on-going road maintenance within the City of Santa Ana and other similar projects, also is not anticipated to result in exceeding the SCAQMD thresholds far these criteria pollutants. Because construction activity is an ongoing existing activity in the SCAB, emissions associated with construction activity are accounted for as part of the AQMP's existing regional inventory. Also, the project's construction activities are required to comply with all applicable SCAQMD Rules and Regulations. CEQA Guidelines Section 15064(h)(3) specifies that "a project's incremental contribution to a cumulative effect is not cumulatively considerable if the project will comply with the requirements in a previously approved plan or mitigation program which provides specific requirements that will avoid or substantially lessen the cumulative problem within the geographic area in which the project is located." Thus, because the project would not emit air pollutants during operation, is consistent with the AQMP, and will comply with all applicable SCAQMD Rules and Regulations during construction, a less than significant impact would occur. Page 38 of 64 75E-42