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III. ENVIRONMENTAL SETTING,IMPACTS AND MITIGATION MEASURES B. AIR QUALITY • The Federal Ozone Attainment Demonstration Planado ted November 14 1994 ( P ). This plan establishes the regulatory framework needed to bring the SJVAB into compliance with the national standards for ozone. This plan also satisfied the required triennial review for SAAQS and demonstrates how the national standards for ozone will be met by 1999. Though a progress report is not due to until early 2000, monitoring data indicates that the SVAB will not attain the national standards by the 1999 deadline(SJVUAPCD, 1999). • California Clean Air Act Triennial Progress Report and Plan Revision 1995-1997. This plan identifies the SJVAB as both a source and receptor of transported ozone and concludes that attainment of the State ozone standard will not occur until upwind areas, such as the San Francisco Bay Area and the Sacramento Valley Air Basins, substantially reduce their emissions of ozone precursors. • 1997 PM-10 Attainment Demonstration Plan. This plan establishes the regulatory framework in order to bring the SJVAB into compliance with the national standards for PM-10 by the end of 2006,as prescribed by the U.S. EPA(SJVUAPCD, 1998a). The SJVUAPCD's primary means of implementing the above air quality plans is by adopting rules and regulations. For example,the SJVUAPCD adopted its Regulation VIII-Fugitive Dust Control, Rule 8010, on October 21, 1993. This regulation consists of a series of emissions reduction rules intended to implement the PM-10 Attainment Demonstration Plan. The PM-10 Attainment Demonstration Plan emphasizes reducing fugitive dust as a means of achieving attainment of the federal standards for PM-10. The rule specifically addresses the following activities: • construction,demolition,excavation, extraction; • handling and storage of bulk materials; • landfill disposal sites; • paved and unpaved roads;and • vehicle and/or equipment parking, shipping receiving,transfer, fueling,and service areas. Existing Air Quality Conditions The SJVUAPCD's regional air quality monitoring network provides information on ambient concentrations of criteria air pollutants. Monitored ambient air pollutant concentrations reflect the number and strength of emissions sources and the influence of topographical and meteorological factors. Table III.B-2 presents a five-year summary of air pollutant (concentration)data collected at the closest monitoring station to the site on Hazelton Street in Stockton,east of the project site. This station measures concentrations of air pollutants, including the two for which the SJVAB remains"nonattainment:"ozone and PM-10. Pollutant concentrations measured at this station are representative of background air pollutant concentrations in the vicinity of the project site. In Table III.B-2,air pollutant concentrations are compared with state ambient air quality standards,which are more stringent than the corresponding national standards. Ozone is not usually emitted directly into the atmosphere,but is a secondary air pollutant produced in the atmosphere through a complex series of photochemical reactions involving Stockton Sravenger Transfer Station Erponsion III.B.4 ESA/990190