2019-090 - Adopting the Mitigated Negative Declaration

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*:/:I1-3111WA This designation was based on two source -specific monitors in Vernon and the City of Industry exceeding the new standard. The rest of the SoCAB, outside the Los Angeles County nonattamment area remains in attainment of the new standard. On May 24, 2012, CARB approved the SIP revision for the federal lead standard, which the EPA revised in 2008. Lead concentrations in this nonattamment area have been below the level of the federal standard since December 2011. The SIP revision was submitted to EPA for approval. AREA DESIGNATIONS The AQMP provides the framework for air quality basins to achieve attainment of the state and federal ambient au quality standards through the State Implementation Plan (SIP). Areas are classified as attainment or nonattainment areas for particular pollutants, depending on whether they meet ambient air quality standards. Severity classifications for ozone nonattainment range in magnitude from marginal, moderate, and serious to severe and extreme. • Unclassified: a pollutant is designated unclassified if the data are incomplete and do not support a designation of attainment or nonattamir ent. • Attainment: a pollutant is in attainment if the CAAQS for that pollutant was not violated at any site in the area during a three-year period. • Nonattainment: a pollutant is in nonattamment if there was at least one violation of a state AAQS for that pollutant in the area. • Nonattainment/Transitional: a subcategory of the nonattamment designation. An area is designated nonattainment/transitional to signify that the area is close to attaining the AAQS for that pollutant. The attainment status for the SoCAB is shown in Table 2, Attainment Status of Criteria Pollutants in the South Coast Air Basin. The SoCAB is designated in attainment of the California AAQS for sulfates. The SoCAB is designated as nonattainment for lead (Los Angeles County only) under the National AAQS. 75C-148