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8. Conclusion

The qualitative hot spot analysis for the Corridor X / I-65 project indicates:

Based on the qualitative analysis, it is determined that the Corridor X and I-65 project meet all of the project-level conformity requirements, and that the improvements associated with the project will not will not cause or contribute to a new violation of the PM2.5 NAAQS or increase the frequency or severity of a violation. This qualitative evaluation points to a pattern linking PM mass concentrations more closely with local industrial sources than with transportation sources. The improvements in engine technology, the lowering of sulfur content in the diesel fuel, the improved operational efficiency of the transportation network, and the turnover in the vehicle fleet will offset the increase in traffic associated with the project and support the conclusion that the project will not will not cause or contribute to a new violation of the PM2.5 NAAQS, or increase the frequency or severity of a violation.


Blanchard, Charles, et al., Particulate Matter Sources in Birmingham, Alabama, Envair, Albany California, 2006

Liu, W.; Wang, Y.; Russell, A.; Edgerton, E.S. 2004. Atmospheric aerosol over two urban-rural pairs in the southeastern United States: chemical composition and possible sources. Atmos. Environ. 39: 4453-4470.

Liu, W.; Wang, Y.; Russell, AS.; Edgerton, E., 2006a. Enhanced Source Identification of Southeast Aerosols Using Temperature Resolved Carbon Fractions and Gas Phase Components. Submitted to Atmos. Environ.

Liu, W.; Lee, S.; Wang, Y.; Russell, A.; Edgerton, E., 2006b. Source Apportionment of PM2.5 at Four SEARCH Sites: Comparison between PMF and CMB. Submitted to Atmos. Environ.

Zheng, M; Lin, K; Edgerton, E.; Schauer, J.; Dong, M.; Russell, A., 2005. Spatial Distributions of Carbonaceous Aerosol in the Southeastern U.S. using Molecular Markers and Carbon Isotope Data. To be published in J. Geophys. Res.

11 American Transportation Research Institute, January 2006
Updated: 7/6/2011
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