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6.Other Statutory Considerations analysis does not indicate that significant delays would be experienced by these turning — movements. The poor levels of service are primarily the result of the difficulty that would be experienced by vehicles attempting to turn left or proceed through across both directions of SR 132. — Mitigation Measure Measure 6.3: Implement Mitigation Measures 4.4.1a,4.4.1b,4.4.2,4.4.3,4.4.4, and 4.4.5 to mitigate the project's incremental contribution to cumulative traffic impacts. Impact Significance After Mitigation: With implementation of Mitigation Measures 4.4,1a, 4.4.1b,4.4.2, 4.4.3,4.4.4,and 4.4.5, the project's impacts would be mitigated to a less-than-significant level and therefore,the incremental contribution to cumulative impacts is less than significant. Air Quality Impact 6.4: The project will result in increased traffic volumes that in turn will cause an incremental effect on air quality that is cumulatively considerable when considered along with past,present,and future projects in the project area. The combined impact of those projects on air quality would be a significant impact. Cumulative air quality impacts were evaluated both on a local and regional basis. The project area is located in the geographic boundary between the San Joaquin and Sacramento Valleys,a sub- region within the SJVAB. The SJVAB is currently designated as severe non-attainment for national and state ozone and PMIO and PM 2.5 standards (CARB, 2002). The SJVAB is highly _ susceptible to pollutant accumulation over time.Frequent transport of pollutants into the SJVAB from upwind sources contributes to poor air quality. However,CO levels are projected to be significantly lower in the future due to emission control technology improvements in the automobile fleet,attrition of older, high-polluting vehicles, and improved fuel mixtures. Such reduction would more than offset any effects of increased CO — emissions from traffic due to project and cumulative development. Given the SJVAB's designation as severe non-attainment,any proposed project that would — individually have a significant air quality impact would also be considered to have a significant cumulative air quality impact. For any project that does not individually have significant operational air quality impacts,the determination of significant cumulative impact should be based on an evaluation of the consistency of the project with the General Plan and with the regional air quality plan. The project would result in significant impacts of NOx emissions and ROG emissions before 2020 at the highest proposed production level(4 million tons per year). — Therefore,the project would have a cumulatively considerable contribution to regional ozone concentrations that would result in a cumulatively significant impact.This would be a significant impact RMC Pacific Vernalis Quarry Mining and Reclamation Project 6-10 ESA/203015 Draft Environmental Impact Report May 2006