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The SJVUAPCD Rule 8011 recommends that an analysis of air quality impacts associated with construction activities emphasize the implementation of effective and comprehensive control measures rather than detailed quantification of emissions.As such, construction-related emissions from on-site equipment and trucks hauling materials onsite and offsite are not quantified here. Although construction activities result in the emission of carbon monoxide and ozone precursors, these emissions are included in the emission inventory that is the basis for regional air quality plans, and are not expected to impede existing attainment or maintenance status of ozone or carbon monoxide standards in the San Joaquin Valley region (Cadrett 2003 and San Joaquin County 2000). The SJVUAPCD risk management policy identifies de-minimum emission levels from stationary sources that might pose or contribute to significant risks. Chronic effects from diesel exhaust will be minimized because the diesel exhaust generated during this project will be generated intermittently and temporarily from mobile equipment only based on the project description and conservation measures for maintaining air quality. The proposed project will not result in significant operational impacts to air quality because the long-term operation of the project does not include a change in land use or any reason for an appreciable increase in air pollutant emissions at the Site. Therefore, the implementation and long-term operation of the proposed remediation project is consistent with the current San Joaquin County General Plan and the current General Plan is consistent with the most recent Clean Air Plan (CAP)adopted by the SJVUAPCD (San Joaquin County 2000). It was agreed with the SJVUAPCD that a formal Dust Control Plan would not be required. Attachment C provides a summary of the air quality control measures incorporated into the RAP for this project (SJCAPCD 2001 a and 2001 b). b. Violate any air quality standard or contribute substantially to an existing or projected air quality violation. Less Than Significant Impact. National and state ambient air quality standards have been established for criteria pollutants, which include sulfur dioxide (SO2), carbon monoxide (CO), ozone (03), nitrogen oxides (NOx), lead (Pb), and particulate matter with an aerodynamic diameter of 10 micrometers (Nm)or less (PM10). These air quality standards specify upper limits for concentrations of pollutants in ambient air consistent with the goal of preventing specific harm to public health and welfare. The area of the project site, which is within the jurisdiction of the SJVUAPCD, is classified as an attainment area for federal standards for CO, NOx, PM10, Pb, and SO2. However, this area does not attain the federal standard for 03 or California standards for 03 and PM10 (Cadrett 2003). Construction-related emissions will be time limited, but may cause temporary on-site adverse air quality impacts. For this project, PM10 is the pollutant of greatest concern with respect to construction activities. PM10 emissions can result from variety of construction activities, including excavation, grading, demolition, vehicle travel on paved and unpaved surfaces, and vehicle and equipment exhaust. Construction-related emissions can cause incremental increases in localized concentrations of PM10. Construction equipment also emits carbon monoxide and ozone precursors. However, these emissions are included in the emission inventory that is the basis for regional air quality plans, and are not expected to impede attainment or maintenance of ozone and carbon monoxide standards in the region. The SJVUAPCD approach to CEQA analysis of construction impacts is to emphasize implementation of effective and comprehensive control measures rather than detailed quantification of emissions. SJVUAPCD has identified a set of feasible control measures for construction activities. The control 11