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4.6 Air Quality <br /> adequacy of State Implementation Plans (SIPs),but has delegated the authority to implement <br /> many of the federal programs to the states while retaining an oversight role to ensure that the <br /> programs continue to be implemented. <br /> GARB,the State of California air quality management agency, is responsible for establishing and <br /> reviewing the state ambient air quality standards, compiling the California SIP and securing <br /> approval of that plan from U.S.EPA. CARB also regulates mobile emissions sources in <br /> California, such as construction equipment,trucks,and automobiles, and oversees the activities of <br /> air quality management districts, which are organized at the county or regional level. The county <br /> r <br /> or regional air quality management districts are primarily responsible for regulating stationary <br /> emissions sources at industrial and commercial facilities within their jurisdiction and for <br /> preparing the air quality plans that are required under the federal Clean Air Act and California <br /> Clean Air Act. <br /> Air Quality Planning in the Valley Air District <br /> Pursuant to the 1990 Federal Clean Air Act Amendments,the EPA classifies air basins (or <br /> portions thereof) as "attainment"or"nonattainment"for each criteria air pollutant,based on <br /> him whether or not the NAAQS had been achieved. Under the federal Clean Air Act Amendments of <br /> 1990, ozone nonattairtment areas are further classified as marginal, moderate, serious, severe, or <br /> extreme,depending upon the severity of peak ozone concentrations in the area. In 1988, the State <br /> Legislature passed the California Clean Air Act, which is patterned after the federal Clean Air <br /> Act to the extent that areas are required to be designated as"attainment" or"non-attainment"; <br /> however,area designations that have been made under the California Clean Air Act correspond to <br /> the state standards, rather than the national standards.Thus,areas in California have two sets of <br /> area designations: one set with respect to the national standards and another set with respect to <br /> I the state standards. Table 4.6-2 shows the current attainment status of the project area. <br /> TABLE 4.6.2 <br /> SAN JOAQUIN VALLEY ATTAINMENT STATUS <br /> I <br /> DesignationlClassification <br /> Pollutant Federal Standards State Standards <br /> Ozone—one hour No Federal Standard Non-attainment/Severe <br /> Ozone—eight hour Non-attainment/Serious No State Standard <br /> PM+u Non-attainment/Serious Non-attainment <br /> PMzs Non-attainment Non-attainments <br /> Carbon Monoxid,San Joaquin County Unclassified/Attainment Attainment <br /> Nitrogen Dioxide Unclassified/Attainment Attainment <br /> Sulfur Dioxide,San Joaquin County Unclassified Attainment <br /> Lead(particulate) No Designation Attainment <br /> ` Hydrogen Sulfide No Federal Standard Unclassified <br /> Sulfates No Federal Standard Attainment <br /> Visibility-Reducing Particles No Federal Standard Unclassified <br /> 'Federal One Hour Ozone National Ambient Air Quality Standard was revoked on June 15,2005 <br /> s Non-attainment per CARB's website:<www.arb.ca.gov/desig/adm/s4_pm25.pdf> <br /> SOURCE: <www.valleyair.org/aginfo/attainment.htm>(November 2005),and<www.arb.ca.gov/desig <br /> /adMadm.htm> <br /> `. RMC Pacific vemalis Quarry Mining and Reclamation Project 4.6-7 ESA 1203015 <br /> Draft Environmental Impact Report May 2006 <br />