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KLEINF-ELDER Bright People.Right Solutions. Carbon Monoxide Emissions The pollutant with the greatest potential for violation of an air quality standard caused by the proposed project would be carbon monoxide., Generally speaking, increased traffic conditions can result in excessive congestion at intersections, which results in prolonged idle times and localized increases in carbon monoxide emissions. Under GAMAQI, a project may be considered to have a potentially significant impact related to CO if it meets one of the following conditions: A traffic study for the project indicates that the Level of Service (LOS) on one or more streets or at one or more intersections in the project vicinity will be reduced to LOS E or F. A traffic study indicates that the project will substantially worsen an already existing LOS F on one or more streets or at one or more intersections in the project vicinity. As discussed in Section 15, Transportation, the project is not anticipated to lead to an i LOS decrease in nearby intersection and roadway traffic to E or F. Therefore, according to GAMAQI criteria, the project is not anticipated to have a significant impact related to CO emissions. Level of Significance: Less than significant Mitigation Measures: None required Air Toxics Emissions themselves would not generate an significant emissions of air Project operations by the g Y 9 toxics. Facilities that generate air toxics in their operation require a permit from SJVAPCD, and the current facilities were not required to obtain such a permit for their activities. The increased truck traffic associated with the project would generate increased diesel particulate emissions in the area. Diesel particulate matter is considered an air toxic. Of particular concern are diesel particulate emissions in the vicinity of the residences south of the project site. Residents there could be exposed to elevated levels of diesel particulate emissions, which could potentially increase their health risks, particularly for cancer. Kleinfelder conducted a health risk analysis to evaluate the cancer health risks associated with increased diesel truck traffic resulting from the project. Appendix A contains a copy of the analysis. Diesel exhaust emissions associated with the proposed project were determined by estimating truck trips, determining the appropriate emission rates for the trucks, calculating resulting annual emissions, and converting these 121339/ST011 R226 3-21 October 14, 2011 Copyright 2011 Kleinfelder