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TABLE 3-1 <br />SAN JOAQUIN VALLEY AIR BASIN ATTAINMENT STATUS <br />Designation/Classification <br />Pollutant Federal Primary Standards State Standards <br />Ozone - One hour <br />No Federal Standard <br />Nonattainment/Severe <br />Ozone - Eight hour <br />Nonattainment/Extreme <br />Nonattainment <br />PM10 <br />Attainment <br />Nonattainment <br />PM2.5 <br />Nonattainment <br />Nonattainment <br />Carbon Monoxide <br />Attainment/Unclassified <br />Attainment/Unclassified <br />Nitrogen Dioxide <br />Attainment/Unclassified <br />Attainment <br />Sulfur Dioxide <br />Attainment/Unclassified <br />Attainment <br />Lead (Particulate) <br />No Designation/Classification <br />Attainment <br />Hydrogen Sulfide <br />No Federal Standard <br />Unclassified <br />Sulfates <br />No Federal Standard <br />Attainment <br />Visibility Reducing Particles <br />No Federal Standard <br />Unclassified <br />Vinvl Chloride <br />No Federal Standard <br />Attainment <br />Source: SJVAPCD 2020. <br />Particulate matter is a mixture of solid and liquid particles suspended in air, including <br />dust, pollen, soot, smoke, and liquid droplets. In San Joaquin County, particulate matter <br />is generated by a mix of rural and urban sources, including agricultural operations, <br />industrial emissions, dust suspended by vehicle traffic, and secondary aerosols formed by <br />reactions in the atmosphere. Two types of particulate matter are of concern: particulate <br />matter 10 micrometers or less in diameter (PMIo), and particulate matter 2.5 micrometers <br />or less in diameter (PM2.5). The SJVAPCD currently has a 2015 PM2.5 Plan for the 1997 <br />federal PM2.5 standard, a 2012 PM2.5 Plan for the 2006 federal PM2.5 standard, a 2016 <br />Moderate Area Plan for the 2012 federal PM2.5 standard, and a 2007 PMIo Maintenance <br />Plan to maintain the Air Basin's attainment status of the federal PMIo standard. <br />CO is an odorless, colorless gas that is toxic in high concentrations. It is formed by the <br />incomplete combustion of fuels and is emitted directly into the air, unlike ozone. The <br />main source of CO in the San Joaquin Valley is on -road motor vehicles (SJVAPCD <br />2015). The San Joaquin Valley Air Basin is in attainment/unclassified status for carbon <br />monoxide (CO); as such, the SJVAPCD has no CO attainment plans. However, high CO <br />concentrations may occur in areas of limited geographic size referred to as "hotspots," <br />which are ordinarily associated with heavy traffic volumes and congestion. <br />In addition to the criteria pollutants, the California Air Resources Board has identified <br />other air pollutants as toxic air contaminants (TACs) - pollutants that are carcinogenic <br />(i.e., cause cancer) or that may cause other adverse short-term or long-term health effects. <br />Diesel particulate matter, considered a carcinogen, is the most common TAC, as it is a <br />Pock Lane Public Review Draft IS/MND 3-8 May 2022 <br />